Considering the solutions: 0. 04 m acetone [(ch3)2c=o)], 0. 04 m agno3 and 0. 04 m cacl2,
The highest osmotic pressure is 0.04m acetoneThe lowest vapor pressure is 0.04m acetoneThe highest boiling point 0.04 CaCl₂The osmotic pressure is the least amount of pressure that must be applied to a solution in order to block the passage of the solution's pure solvent through a semipermeable membrane.
Reducing the amount of solvent molecules that escape into the vapour phase also reduces the pressure that the vapour phase exerts. This is referred to as a relative decrease in vapor pressure.
Any material's boiling point is the temperature at which it changes from the liquid phase into the gas phase. For water, this occurs at 100 degrees Celsius.
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An engine runs on a mixture of 0. 1 quart of oil for every 3. 5 quarts of gasoline. You make 3 quarts of the mixture. How much oil and how much gasoline do you use?.
So we can use 3.4 quarts of gasoline to make 3 quarts of the mixture. It can be calculated by using ratio of gasoline.
In the term of chemistry, a mixture generally can be defined as a material made up of two or more different chemical substances which are not chemically bonded. A mixture also can be described as the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids.
To find out, divide the amount of oil you need by the ratio of oil to gasoline: 0.1 quart / (0.1 quart / 3.5 quarts) = 0.1 quart * (3.5 quarts / 0.1 quart) = 0.1 * 35 = 3.5 quarts of gasoline. So you use 0.1 quart of oil and 3.5 quarts of gasoline - 0.1 quart of oil = 3.4 quarts of gasoline to make 3 quarts of the mixture.
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Write two balanced reactions for the combination reactions between copper (l and ll) and sulfur
Answer:
The two balanced reactions for the combination reactions between copper (I) and sulfur are:
Cu + S --> CuS
2Cu + 3S --> 2CuS
1. in this experiments you observed that the colors of the flames in each sample are different. why are all the flames not the same colors
The colors of flames in experiments can vary based on several factors, including the temperature and composition of the burning material.
In general, the color of a flame is determined by the emission spectrum of the excited molecules and atoms in the flame. When a material is burned, the heat and energy generated excites the molecules and atoms, causing them to emit light. The specific colors that are emitted depend on the temperature of the flame, as well as the chemical composition of the burning material.
For example, in a very hot flame, such as the flame produced by a welder's torch, the temperature can be high enough to excite and ionize the atoms of the burning material, causing them to emit light across the entire visible spectrum and beyond. This results in a flame that appears white.
In cooler flames, such as those produced by a candle, the temperature is not high enough to ionize the atoms, but it is still high enough to excite them and cause them to emit light. The specific colors that are emitted in this case depend on the chemical composition of the burning material. For example, in a candle flame, the wax is primarily composed of hydrocarbons, which emit a yellow-orange light when burned. The blue color that is often seen in the center of the flame is due to the reaction between the hydrogen and carbon in the wax, which produces excited molecules that emit blue light.
In conclusion, the colors of flames in experiments can vary based on the temperature and composition of the burning material. The specific colors that are observed depend on the conditions within the flame and the chemical reactions that are taking place.
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please label each species in the following reaction (in the forward direction) as one of the following (in no particular order): a base, a conjugate base, an acid, and a conjugate acid.
The conjugate of a weak acid is its corresponding weak base and vice versa. Conjugates play an important role in understanding the behavior of acids and bases in aqueous solutions.
a. In this reaction, H2PO4- is a weak acid and HCO3- is its conjugate base. HPO42- is a weak base and H2CO3 is its conjugate acid.
b. In this reaction, F- is a weak base and HSO4- is its conjugate acid. HF is a weak acid and SO42- is its conjugate base.
c. In this reaction, HSO4- is a strong acid and H2O is its conjugate base. SO42- is a weak base and H3O+ is its conjugate acid.
d. In this reaction, H2S is a weak acid and CN- is its conjugate base. HS- is a weak base and HCN is its conjugate acid.
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1. For the following reactions, label each species as an acidor a base. Indicate the species that are conjugates of oneanother.
a. H2PO4- +HCO3- <> HPO42- +H2CO3
b. F- + HSO4- <> HF+ SO42-
c. HSO4- + H2O <> SO42- + H3O+
d. H2S + CN-- <> HS- + HCN
what is the angle of rotational symmetry in methane
The angle of rotational symmetry in methane (CH4) is 720°.
What is angle of rotational symmetry?The angle of rotation is the turning angle during rotation for a figure or object that has rotational symmetry. For instance, a square still looks the same after being rotated by 90 degrees. Consequently, a square rotates at a 90-degree angle.
This means that a methane molecule can be rotated 720° around its central carbon atom and still maintain its original appearance. The molecule has a tetrahedral shape, which allows for four equivalent positions of rotation.
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what does penetrating power refer to?
1. Radiation's ability to emit visible spectrum light
2. how likely radiation is to escape the Sun's surface
3. radiation's ability to cause other atoms to ionize
4. how likely radiation is to pass through matter
Calculate the amount of heat it would take to convert 85.0 g of water to steam
Although part of your question is missing, you might be referring to this full
question:
Calculate the heat energy required to convert completely 85.0 g of water at 50°C into steam at 100°C.
the heat energy required to convert completely 85.0 g of water at 50°C into steam at 100°C is 18037J.
Given that,
Mass m=85g
We know that,
Q1 =mcΔt
Q1 =85×4.2×(100−50)
Q1 =17850J
Now, the latent heat
Q2 =mL
Q2 =85×2.2
Q2 =187J
Now, the total heat energy required
Q=Q1 +Q2
Q=17850+187
Q=18037J
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Describe how to prepare this solution using a 250. 0 ml volumetric flask by placing the steps in the correct order. Not all of the steps will be used.
To prepare a solution of NaCl using a 250.0 mL volumetric flask, you will need to take the following steps in order:
Measure out the required amount of NaCl.Transfer the measured amount of NaCl to the volumetric flask.Dissolve the NaCl in less than 250 mL of water.Top up the flask with more water to a total volume of 250.0 mL.Mix the solution well.Make sure the solution is at room temperature before use.Molecules of sodium chloride (NaCl) are composed of two atoms, sodium (Na) and chlorine (Cl). These atoms are held together by an ionic bond, which is formed when one atom donates electrons to the other. This creates a positive and negative charge, resulting in an electrostatic attraction between the two atoms.
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the energy absorbed or released during a reaction in which a substance is produced is called the a. calorie change. c. energy as heat. b. standard condition. d. enthalpy of formation.
The energy absorbed or released during a reaction in which a substance is produced is called d.) enthalpy of formation.
The enthalpy of formation often referred to as the heat of formation, is the energy change that occurs when a substance is formed from its elements under standard conditions. The enthalpy of formation represents the energy absorbed or released when a substance is produced from its constituent elements in their standard states.
For example, the enthalpy of the formation of water is the energy change that occurs when hydrogen gas and oxygen gas are combined to form liquid water under standard conditions. The enthalpy of formation is an important concept in thermodynamics, as it provides information about the energy required or released during chemical reactions, which can be used to predict the feasibility of a reaction, calculate the energy changes during combustion, and design energy-efficient processes.
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Place these steps of the action potential in the correct order. 1. Sodium ions channels return to the resting state and repolarization continues. 2. Voltage-gated sodium ion channels activate, sodium ions enter, and the axon section depolarizes. 3. As potassium ion channels return to resting state, the axolemma may hyperpolarize before returning to the resting membrane potential. 4. A local potential depolarizes the axolemma of the trigger zone to threshold. 5. Sodium ion channels inactivate, and voltage-gated potassium ion channels activate, so sodium ions stop entering and potassium ions leave, beginning repolarization
The actions necessary to create an action potential should be completed in the following order: 4, 2, 5, 1, 3. Therefore, choice (C) is the appropriate response.
An action or membrane potential is a sudden and rapid change from the membrane's resting state (about -70 millivolts). It is produced in neurons and other cells that exhibit the excitability trait, such as myocytes (muscle cells). By delivering a stimulus with a threshold value, it can be produced (a minimum value in millivolts required to generate a membrane potential). The creation of the membrane potential happens in three steps. The following is a description of these phases:
The threshold potential opens the voltage-gated sodium ion channels during the depolarization phase. This results in the admission of sodium ions into the cell, which increases the membrane potential.
Overshoot phase: The overshoot phase is when the membrane or action potential reaches around +61 mV (millivolts) as a result of the activation of sodium channels (an extreme positivity phase).
Phase of repolarization: As the sodium ion channels close, the permeability for sodium ions quickly declines during this phase. The voltage-gated potassium channels also open as a result of the overshoot phase value, allowing potassium ions to exit the cell and resulting in a drop in the electropositive value of an action potential. The action potential eventually comes to rest as a result. As a result of this phase, the membrane or action potential enters the hyperpolarization phase, which is more electronegative than the resting state.
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determine the ionization states of aspartic acid at each pH. The pK, of the amine is 9.6, while the pk, of the carboxylic acid is 1.88 and the pK, of the carboxylic acid in the side chain is 3.65.
The ionization states of aspartic acid at different pH can be determined by using the pKa values of the amine, carboxylic acid, and carboxylic acid in the side chain.
At pH less than 1.88, the carboxylic acid group is fully protonated and the molecule is in its neutral form.
At pH between 1.88 and 3.65, the carboxylic acid group deprotonates, forming the corresponding carboxylate ion and the molecule becomes negatively charged. At the same time, the side chain carboxylic acid group is protonated.
At pH between 3.65 and 9.6, both the carboxylic acid group and the side chain carboxylic acid group are deprotonated, resulting in two negatively charged carboxylate ions.
At pH greater than 9.6, the amine group becomes deprotonated and the molecule is in its neutral form with two negatively charged carboxylate ions.
These ionization states are dynamic and will change with changes in pH.
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Write the isotopic symbol for the iodine isotope with 74 neutrons.
Answer:
12753I 53 127 I
Explanation:
Hence, the isotopic symbol for iodine isotope with 74 neutrons is 12753I 53 127 I .
Hence, the isotopic symbol for iodine isotope with 74 neutrons is 12753I 53 127 I.
Isotope: what does it mean?
Isotopes are elements that belong to the same family but have different numbers of neutrons but the same number of protons. The atomic number of an element on the Periodic Table is determined by the number of protons in its nucleus.
How are isotopes identified?The total number of protons and neutrons in an isotope, or mass, is used to identify it. Isotopes are typically written in one of two ways. They both use the atom's mass, which is equal to the sum of the number of protons and neutrons.
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What is the Lewis structure of NH 3?
Ammonia's (NH3) Lewis structure is a straightforward illustration of how the molecule's electrons are distributed.
What is NH3?Ammonia is a gas that has the chemical formula NH3, which is an odourless, strong gas. It is a typical chemical used in industry and the home that has a number of applications, including those for fertiliser, cleaning products, and refrigerants.
What is the structure of NH3?A core nitrogen (N) atom is surrounded by three hydrogen (H) atoms in the Lewis structure of NH3. Since hydrogen and nitrogen each have one valence electron and nitrogen has five, the molecule has a total of nine valence electrons.
It's crucial to remember that the Lewis structure just depicts the molecule as a whole; it does not reveal how the molecule actually looks. The nitrogen atom occupies the centre of the trigonal pyramidal structure of NH3, which is surrounded by a triangle of hydrogen atoms. The lone pairs of electrons on the nitrogen and hydrogen atoms repel one another, resulting in this form.
In conclusion, the Lewis structure of NH3 reveals the location of electrons within the molecule and can be used to foretell the molecule's chemical reactivity. Three hydrogen atoms surround the core nitrogen atom in the Lewis structure of NH3, which shows bonds between the atoms as lines.
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A bottling plant fills one-gallon jugs with milk. The labels on the jugs state that the volume of milk they contain is 128 fluid ounces (fl. Oz. ). Federal law mandates that the jugs must contain no less than the stated volume. The actual volume of milk in the jugs is normally distributed with mean fl. Oz. And standard deviation fl. Oz. Plant workers take a simple random sample (srs) of 8 jugs, measure the volume of milk in each jug, and calculate the sample mean. What is the shape of the distribution of sample means?.
The distribution of sample means is approximately normal with a mean of 128 fl. Oz. and a standard deviation equal to the standard deviation of the population (fl. Oz.) divided by the square root of the sample size (8).
This is known as the Central Limit Theorem and is true for any population with a finite standard deviation, regardless of the underlying distribution.
The Central Limit Theorem is a fundamental theorem in statistics which states that, given a sufficiently large sample size, the sampling distribution of the mean of a variable will approach a normal distribution , regardless of the underlying distribution of the population. In other words, as the sample size gets larger, the sample mean will become more and more normally distributed, even if the original population is not normally distributed. This is often used when analyzing data, as it allows us to make predictions about the mean of a population based on the sample mean.
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major species present when dissolved in water nibr2
NiBr₂ is deliquescent in nature which means it is soluble in water.
Nickel bromide is a yellow, crystalline material, mildly toxic, carcinogenic in nature. When nickel bromide comes into contact with strong acids or acid fumes it produces highly toxic and corrosive hydrogen bromide gas. When it is heated to decomposition it emits toxic bromide fumes.
The compound nickel(II) bromide is a strong electrolyte. Nickel(II) bromide is used as a effective source of the bromide ion. It is an important raw material and intermediate which is used in synthetic chemistry. NiBr₂ is soluble in water or we can say that it is deliquescent in nature.
The given question is incomplete so I have answered according to general knowledge.
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What is the wavelength of a blue-green light radiation that has a frequency of 6.62 x 10^14 Hz?
The wavelength of a blue-green light radiation that has a frequency of 6.62 x 10¹⁴ Hz is 4.53 × 10-⁵m.
How to calculate frequency?The frequency of a wave can be calculated using the following formula:
Wavelength is the length of a single cycle of a wave, as measured by the distance between one peak or trough of a wave and the next.
The wavelength is often designated in physics as λ, and corresponds to the velocity of the wave divided by its frequency.
λ = v/f
Where;
λ = wavelengthv = velocityf = frequencyλ = 3 × 10⁸ ÷ 6.62 x 10¹⁴
λ = 4.53 × 10-⁵m
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If the rate law for a chemical reaction is: Rate k [XI2Y What are the units of the rate constant k?A)M-3 s1 B)M4s-1 C)M1s-1 D)M-2 s -1 E)Ms1
The units of the rate constant k in the rate law "Rate k [XI2Y" are (M^-1 s^-1).
The rate of a reaction is typically expressed as the change in concentration of a reactant or product over time. In the rate law, the rate of the reaction is proportional to the product of the concentration of reactants raised to some power, which are represented by [X] and [Y] in the rate law. The proportionality constant, k, is the rate constant, which has units that reflect the units of concentration raised to the power indicated by the coefficients in the rate law.
In this case, the rate law has a single reactant raised to the power of 2, so the units of k would be (M^-1 s^-1). The negative exponent indicates that the rate of the reaction decreases as the concentration of the reactant increases, and the positive exponent for time indicates that the rate of the reaction increases with time.
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transition metals can often have multiple charges, which causes several possibilities for their chemical formulas. A student conducts a combustion experiment to determine the empirical formula of an unknown compound containing lead and oxygen. use their data collected in the table to calculate the empirical formula. what is the whole number subscript of the oxide ion in the calculated formula?
The empirical formula is the simplest formula of the substance.
What is a transition element?We have to note that the transition elements are the elements that we know that have a variable oxidation state and this is coming from the fact that the elements do have an incompletely filled d orbital.
We can not be able to obtain the empirical formula for the compound because the other details are missing. However, in the presence of the required details, the formula can be obtained in the question.
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if 5.4 moles of Na₂CO₃ react with excess calcium hydroxide. how many grams of CaCO₃ will be produced?
Na₂CO₃+Ca(OH)₂=2NaOH+CaCO₃
Answer:
540.47g approximately
Explanation:
No. of moles in Na₂CO₃ = 5.4 moles
Mole ratio of Na₂CO₃ : CaCO₃ = 1:1
No. of moles in CaCO₃ = 5.4 moles
Mass of CaCO₃ = 5.4 × 100.0869
= 540.46926g
What happened to the water temperature of heat is added to boiling water?
A significant exception to the general rule that more heat results in a higher temperature occurs when heat is applied to a boiling liquid. The addition of energy causes a liquid at the boiling point to change into a gas at the same temperature.
What water temperature of heat is added to boiling water?At the boiling point, heat no longer raises the temperature because intermolecular connections are once more being broken with the energy. However, when heating water in the open, the partial pressure of the water vapour cannot rise above 1 atmosphere.
As more heat is added, the temperature will continue to grow linearly until all the water has been converted to steam.
Therefore, when the temperature reaches 100oC, the partial pressure of the water vapour can no longer rise to stop the water from boiling. Increasing the heat applied to the water only increases evaporation and does not raise the temperature.
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A significant exception to the general rule that more heat results in a higher temperature occurs when heat is applied to a boiling liquid. The addition of energy causes a liquid at the boiling point to change into a gas at the same temperature.
What water temperature of heat is added to boiling water?At the boiling point, heat no longer raises the temperature because intermolecular connections are once more being broken with the energy. However, when heating water in the open, the partial pressure of the water vapour cannot rise above 1 atmosphere.
As more heat is added, the temperature will continue to grow linearly until all the water has been converted to steam.
Therefore, when the temperature reaches 100oC, the partial pressure of the water vapour can no longer rise to stop the water from boiling. Increasing the heat applied to the water only increases evaporation and does not raise the temperature.
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The suspect claims to have started a fire by putting gasoline in a glass jar, adding a wick, and lighting it. He then threw it in a house. What did the
suspect do?
A. He started the fire with a substrate control.
B. He used multiple high explosives.
He created a Molotov cocktail.
He utilized vapor concentration.
C.
D.
The suspect created a Molotov cocktail.
What is cocktail?A cocktail is an alcoholic beverage composed of two or more ingredients, usually of different categories, such as spirits, liqueurs, sweeteners, or mixers. The most popular cocktails include martinis, margaritas, daiquiris, mojitos, and cosmopolitans. Cocktails can be served as an aperitif, during a meal, or after dinner as a digestif. Cocktails are often created to suit a particular occasion or season, and can range from sweet and fruity to strong and intense.
This is a type of incendiary device typically consisting of a glass bottle filled with a flammable liquid, usually gasoline, with a wick, often made of cloth, protruding from the top. The wick is lit and the bottle is then thrown or otherwise deployed, which causes the bottle to break and the flammable liquid to spread and ignite. In this case, the suspect put gasoline in a glass jar, added a wick, lit it and then threw it in a house, creating a Molotov cocktail and starting a fire.
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What is the empirical formula for a compound that contains 48.64% carbon 8.16% hydrogen and 43% oxygen?
The empirical formula for a compound that contains 48.64% carbon, 8.16% hydrogen and 43% oxygen is CH2O.
What is empirical formula?Empirical formula is a type of chemical formula that expresses the relative number of each atom present in a molecule of a substance. It is calculated from the elemental composition of a compound, and is the simplest whole number ratio of the elements it contains.
This can be determined by converting the percentage of each element into its molecular weight, then dividing by the smallest molecular weight. The molecular weights for carbon, hydrogen and oxygen are 12.01, 1.01, and 16.00 respectively. Dividing each of these by the smallest value of 1.01, we get 12, 1, and 16. Then, dividing the mass of each element in the compound by the corresponding molecular weight, we get 4, 8, and 2.7. Rounding these values to the nearest whole number gives us the empirical formula of CH2O.
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for gases initially contained in a 1.0 l vessel and the reaction 2 no2(g) ⇀↽ n2o4(g)
II only , i.e., isothermally decreasing the volume of the container to 0.425 L.
Why would isothermally decreasing the volume of the container to 0.425 L; NOT cause the equilibrium would to shift to the left and convert some N2O4 to NO2?An isothermal change in volume will alter the concentration of the reactants and products in a system at equilibrium, which can cause the equilibrium to shift. However, the shift direction cannot be predicted without considering the effect of the change on both the forward and reverse reaction rates. In this particular case, since the reaction is exothermic (H = -37.7 kJ/mol), decreasing the volume of the container will increase the concentration of the products and decrease the concentration of the reactants, which will cause the equilibrium to shift to the right, favoring the formation of N2O4(g). This shift will counteract the effect of the decrease in volume and restore the original state of the system at equilibrium.
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The complete question is as follows:
A 500 mL flask is filled with krypton (Kr) at STP. How many moles of Kr are present?
The number of moles present in a 500mL flask that is filled with krypton (Kr) at STP is 0.022 moles.
How to calculate number of moles?The number of moles in a substance can be calculated using the following ideal gas law equation as follows:
PV = nRT
Where;
P = pressureV = volumeT = temperaturen = no of molesR = gas law constantAccording to this question, a 500mL flask is filled with krypton (Kr) at STP. The values of T, P and R at STP are as follows:
T = 273KP = 1 atmR = 0.0821 Latm/K1 × 0.5 = n × 0.0821 × 273
0.5 = 22.41n
n = 0.022 moles
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Determine the mass of lithium hydroxide produced when .38 grams of lithium nitride reacts with water.
Lithium nitride (Li3N) reacts with water (H2O) to form lithium hydroxide (LiOH) and ammonia (NH3). The molar ratio of Li3N to LiOH is 1:1, so the mass of LiOH produced is equal to the mass of lithium nitride used.
What is a molar ratio?A molar ratio is the number of moles of one material divided by the number of moles of another substance. It is commonly used in chemical reactions to compare the relative concentrations of two distinct chemicals.
When lithium nitride (Li3N) interacts with water (H2O), lithium hydroxide (LiOH) and ammonia are formed (NH3). The reaction can be expressed as follows:
LiOH + 3NH3 Li3N + 3H2O
The molar ratio of the reactants and products must be used to compute the mass of lithium hydroxide produced. Because the molar ratio of Li3N to LiOH is 1:1, the mass of LiOH produced equals the quantity of Li3N utilised.
As a result, the mass of lithium hydroxide generated by reacting 0.38 grams of lithium nitride with water is 0.38 grams.
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the element europium exists in nature as two isotopes: has a mass of 150.9196 u and has a mass of 152.9209 u.the average atomic mass of europium is 151.96 u. calculate the relative abundance of the two europium isotopes.
To calculate the relative abundance of the two europium isotopes, you need to use the following formula:
(x/100)(150.9196) + (y/100)(152.9209) = 151.96.
Solving for x and y, you get x = 24.4 and y = 75.6. This means that 24.4% of europium in nature is the isotope 151Eu and 75.6% is the isotope 153Eu.
The two isotopes of europium found in nature are important because they have different properties and can be used for different purposes. The isotope 151Eu is used in medical imaging and cancer detection, while the isotope 153Eu is used in nuclear reactor shielding and neutron capture.
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to what volume should you dilute 126 ml of an 7.15 m cucl2 solution so that 50.5 ml of the diluted solution contains 4.33 g cucl2 ? express your answer in milliliters to three significant figures. view available hint(s)
The volume i should dilute 126 ml of an 7.15 M CuCl₂ solution so that 50.5 ml of the diluted solution contains 4.33 g CuCl₂ is equals to the 1.412 ×10³ mL.
CuCl₂ is an ionic compound that is soluble in water. We can use the molarity and the volume of the initial solution to figure out how many grams of copper(II) chloride it contains. We have,
Volume of dilute solution, V = 126 ml
Molarity of CuCl₂ = 7.15 M
Firstly, we will convert the mass of CuCl₂ to moles : n = m/M
Where n = moles
m = massM = molar massNow, molar mass of CuCl₂ = 1× mass of copper + 2× mass of chlorine= 63.55g/mol + 2×35.45
g/mol = 134.45 g/mol
So, n = 4.33/134.45 = 0.03221 mol
We want to calculate the concentration of the 50.5 mL CuCl₂ solution. Formula is C = n/V
where, c = concentration
n = molesV = volumeWe must convert 50.5 mL to L:
50.5 mL ×1 L/1000mL = 0.0505L
so, C = n/V = 0.03221 mol/0.0505L
C = 0.638 M. Use the dilution formula to find the volume of the diluted solution: C₁V₁ = C₂V₂
Where, C₁ is the initial concentration
V₁ --> the initial volumeC₂ --> the diluted concentrationV₂ --> the final volume of the diluted solutionSubstitute V₁ = 126 ml , C₁ = 7.15 M , C₂
= 0.638 M
Thus, volume of dilute solution,
7.15 M × 126 mL = 0.638 M × V₂
=> V₂ = 126× 7.15 /0.638 × 1000
=> V₂ = 1.412068 L
but we have the volume in mililiter units, so the required volume is 1.412 × 10³ mL.
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all of the following compounds would produce an electrolyte solution when dissolved in water except
A) Glucose would not produce an electrolyte solution when dissolved in water.
An electrolyte is a substance that produces an electrically conducting solution when dissolved in a polar solvent, such as water. Electrolytes are typically ionic compounds that dissociate into positively charged ions (cations) and negatively charged ions (anions) in solution.
B) Magnesium sulfate, C) Ammonium chloride, and D) Potassium iodide are all ionic compounds that dissociate into ions when dissolved in water, producing an electrically conducting solution and making them electrolytes.
In contrast, glucose (A) is a simple sugar that does not dissociate into ions when dissolved in water and does not produce an electrically conducting solution. It is therefore not an electrolyte.
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The complete question is:
All of the following compounds would produce an electrolyte solution when dissolved in water except:
A) Glucose
B) Magnesium sulfate
C) Ammonium chloride
D) Potassium iodide
Question_____series of lines are the only lines in hydrogen spectrum which appear in the visible region.ALymanBBalmerCPaschenDBrackettMedium
This series of the hydrogen emission spectrum is known as the Balmer series.
This is the only series of lines in the electromagnetic spectrum that lies in the visible region.
What is the Balmer series?
The Balmer series, or Balmer lines in atomic physics, is one of a set of six named series describing the emission spectral lines of the hydrogen atom. The Balmer series is calculated using the Balmer formula, an empirical equation discovered by Johann Balmer in 1885To know more about balmer series, click the link given below:
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Balanced the equation for this reaction, and answer the questions.
___ N2 + ___ H2 ➞ ___ NH3
a) If 25. 0 g N2 and 18. 75 g H2 are used for this reaction, which reactant will be the limiting reactant? Show your
proof.
b) How much of the excess reactant will be left over?
Balanced equation: 3 N2 + 6 H2 ➞ 2 NH3. a) The limiting reactant is H2, as 18.75 g corresponds to only 3 moles, while 25.0 g N2 corresponds to 4.17 moles. b) The excess reactant is N2, with 1.17 moles remaining.
What is the concept of excess reactant and how is it related to the limiting reactant in a chemical reaction?
The concept of excess reactant refers to a reactant in a chemical reaction that is present in a greater amount than required to react with the limiting reactant. The limiting reactant is the reactant that limits the amount of product that can be formed, and its amount determines the maximum amount of product that can be produced. The amount of the other reactant(s) is referred to as the excess reactant because it is present in an amount greater than needed to react with the limiting reactant. When a reaction is carried out, the limiting reactant will be completely consumed, while the excess reactant will remain unchanged.
The amount of excess reactant can be calculated by subtracting the amount of product that was produced from the amount of the excess reactant used in the reaction.
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