digestion
does that answer it?
How many liters of carbon dioxide are formed from the complete decomposition of 50.0 g of iron (III) carbonate at STP?
Answer:
V = 1.57 L
Explanation:
Given data:
Mass of iron(III) carbonate = 50.0 g
Volume of CO₂ formed = ?
Temperature = standard = 273 K
Pressure = standard = 1 atm
Solution:
Chemical equation:
Fe₂(CO₃)₃ → Fe₂O₃ + 3CO₂
Number of moles of Fe₂(CO₃)₃ :
Number of moles = mass/molar mass
Number of moles = 50.0 g /235.8 g/mol
Number of moles = 0.21 mol
Now we will compare the moles of Fe₂(CO₃)₃ and CO₂.
Fe₂(CO₃)₃ : CO₂
1 : 3
0.21 : 1/3×0.21 = 0.07 mol
Volume of CO₂:
PV = nRT
R = general gas constant = 0.0821 atm.L/mol.K
By putting values,
1 atm × V =0.07 mol × 0.0821 atm.L/mol.K × 273 K
V = 1.57 atm.L / 1 atm
V = 1.57 L
Find the mass of an object with a density of 2.01g/mL and a volume of 3.77mL
Answer:
7.58 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volume
From the question we have
mass = 2.01 × 3.77 = 7.5777
We have the final answer as
7.58 gHope this helps you
Methylcycohexane has a cyclic compound of 7 Carbons
True or
False
Answer:
True
Explanation:
Methylcyclohexane has a cyclic compound of 7 carbons false classified as Saturated Hydrocarbon.
A student predicted the reaction between hydrogen and oxygen gas would yield 125 of water. However, after measuring the water formed in the reaction, student determined that only 110 of water was actually formed. What is the percent yield of this reaction ?
Help
Two nitrogen atoms form a diatomic molecule. Which type of bond is most likely to be formed in the case of a diatomic nitrogen molecule?
A. Single Bond
B.Double Bond
C.Triple Bond
D.Ionic Bond
Explanation:
It's a triple bond for nitrogen,double bond for oxygen(just saying)
where is a tornado most likey from
Answer:
If I'm correct i believe that the answer is A.
Answer:
A. Where warm moist air masses traveling north collide with cool dry air masses traveling south
Explanation:
I got it right
What is the mass of 0.2 mole of oxygen atoms.
Please answer step by step.
[tex]\huge\boxed{3.2 Grams}[/tex]
_____________________________________Moles:Moles is the unit which measures the amount of substance in the System International (SI). A mole is the amount of substance that contains the same amount of substance as the amount of substance exactly in exactly 12 g of carbon-12. C-12 is the standard to measure moles.
I have attached the Equations for moles.
_____________________________________For this question we will use the formula,
[tex]Moles = \frac{Given Mass}{Atomic Mass}[/tex]
Rearrange the equation,
[tex]Mass = (Moles)x(Atomic Mass)[/tex]
Given:
Moles = 0.2
Molecular Mass of Oxygen Atom(Not molecule) = 16
Thus,
[tex]Mass = (0.2)x(16)\\\\Mass = 3.2 grams[/tex]
The mass of 0.2 moles of oxygen atom is 3.2 grams.
_____________________________________Best Regards,'Borz'Determine the oxidation number of chlorine in CI2 with the steps
Answer: The oxidation number of chlorine in [tex]Cl_2[/tex] is zero
Explanation:
Oxidation number or oxidation state : It represent the number of electrons lost or gained by the atoms of an element in a compound.
Rules for Oxidation Numbers are :
1. The oxidation number of a free element is always zero.
2. The oxidation number of a monatomic ion equals the charge of the ion.
3. The oxidation number of oxygen (O) in compounds is usually -2.
4. The oxidation number of a Group 17 element in a binary compound is -1.
5. The oxidation number of Hydrogen (H) is +1, but it is -1 in when combined with less electronegative elements.
6. The sum of the oxidation numbers of all of the atoms in a neutral compound is zero.
7. The sum of the oxidation numbers in a polyatomic ion is equal to the charge of the ion.
As [tex]Cl_2[/tex] exists as a free molecule, its oxidation state is zero.
Between these three liquids, which one would burn through this website's new "interactive" advertising system the fastest? (asking for a friend)
A. Molten lava
B. Hydrochloric acid
C. Nitric acid
for reference assume the "interactive" advertisements are made of the materials in a standard monitor, a visual display, circuitry, casing, and power supply
Answer:
Most likely A. Molten lava, since it straight up melts the equipment which is much faster than chemicals dissolving the equipment like hydrochloric acid and nitric acid.
Explanation:
Hope this helped!
P.S. Sure, why not?
An unknown organic compound composed of carbon, hydrogen, and oxygen was analyzed and found to be 50.84% C, 8.53% H, and the rest oxygen. What is the empirical formula
In every 100g of that compund there is 50.84 g of C, 8.53 g H and (100-59.37) g = 40.63 g of O.
Step 1: Convert each element's mass in moles. To do that we need to divide each element's mass by their respective molar mass.
For Carbon.
[tex]C = \frac{50.84}{12} = 4.24 mol [/tex]
For Hydrogen.
[tex]H = \frac{8.53}{1} = 8.53 mol [/tex]
For Oxygen.
[tex]O = \frac{40.63}{16} = 2.54 mol [/tex]
Step 2: Divide each of the numbers by the smallest number.
For Carbon.
[tex]C = \frac{4.24}{2.54} = 1.7 [/tex]
For Hydrogen.
[tex]H = \frac{8.53}{2.54} = 3.36 [/tex]
For Oxygen.
[tex]O = \frac{2.54}{2.54} = 1 [/tex]
Step 3: So the empirical formula will be.
[tex] C_{1.7} H_{3.36} O_1 [/tex]
But using decimal will be messy. So we multiply the numbers by 3. The right empirical formula will be.
[tex] C_{5} H_{10} O_3 [/tex]
The empirical formula of an organic compound that contains 50.84% C, 8.53% H, and the rest oxygen is C₅H₁₀O₃.
First, we have to determine the mass percentage of oxygen, knowing that C, H and O amount to the 100% of the compound.
[tex]C + H + O = 100\%\\O = 100\% - C - H\\O = 100\% - 50.84\% - 8.53\% = 40.63\%[/tex]
Then, we divide each mass percentage by the atomic mass of the element.
[tex]C: 50.84/12.01 = 4.23\\H: 8.53/1.01 = 8.45\\O: 40.63/16.00 = 2.54[/tex]
Afterwards, we divide all the numbers by the smallest one, i.e. 2.54.
[tex]C: 4.23/2.54 = 1.66\\H: 8.45/2.54 = 3.33\\O: 2.54/2.54 = 1[/tex]
Finally, we multiply all the numbers by 3, so that they are all integers.
[tex]C: 1.66 \times 3 \approx 5\\H: 3.33 \times 3 \approx 10\\O: 1 \times 3 = 3[/tex]
The empirical formula of the organic compound is C₅H₁₀O₃.
You can learn more about empirical formula here: https://brainly.com/question/21280037
Complete the passage about the properties of ionic compounds.
It is difficult to break the lonic bonds in a compound because of the________
room temperature because they have_________
Answer:
Following are the solution to the given question:
Explanation:
Due to the strong attachment among ions, it's indeed hard to break the covalent compounds in a combination. The ionic compounds, as they have a great melting point, become solid at room temperature, and may we say that the stronger between both the ions, as it is on a high point of fusion, is quite desirable.
Where are all metalloid found in this periodic table?
Answer:
Explanation:
THe GrEen OnEs
Answer:
They are in the green "staircase"
Explanation:
these elements are the dividers between metals (on the left of them) and non metals (on the right of them), they have some of the properties of both groups
What is the molar concentration (in moles/L) of a solution made with 3.744 g of Mg(NO3)2 dissolved in enough water to make 50.0 mL of solution?
Answer:
The molar concentration of a solution made with 3.744 g of Mg(NO₃)₂ dissolved in enough water to make 50.0 mL of solution is [tex]0.5 \frac{moles}{L}[/tex]
Explanation:
Molarity or Molar Concentration is the number of moles of solute that are dissolved in a certain volume.
The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:
[tex]molarity=\frac{number of moles}{volume}[/tex]
In this case:
Mg: 24.3 g/moleN: 14 g/moleO: 16 g/moleSo, the molar mass of Mg(NO₃)₂ is:
Mg(NO₃)₂= 24.3 g/mole + 2*(14 g/mole + 3*16 g/mole)= 148.3 g/mole
So, if you have 3.744 g of Mg(NO₃)₂, you can apply the following rule of three: if 148.3 grams of Mg(NO₃)₂ are present in 1 mole, 3.744 grams in how many moles are present?
[tex]moles=\frac{3.744 grams*1mole}{148.3 grams}[/tex]
moles= 0.025
Then you have:
number of moles=0.025volume= 50 mL= 0.05 L (being 1,000 mL= 1 L)Replacing in the definition of molarity:
[tex]molarity=\frac{0.025 moles}{0.05 L}[/tex]
you get:
[tex]molarity=0.5 \frac{moles}{L}[/tex]
The molar concentration of a solution made with 3.744 g of Mg(NO₃)₂ dissolved in enough water to make 50.0 mL of solution is [tex]0.5 \frac{moles}{L}[/tex]
The molar concentration of the solution is 0.506 M
The molar concentration of a solution is known as molarity. The molarity of a solution is defined as the moles of a solute per liter of a solution.
It can be expressed as:
[tex]\mathbf{Molarity = \dfrac{moles \ of \ solute}{volume \ of \ the \ solution}}[/tex]
The molar mass of magnesium nitrate Mg(NO3)2 = 148.3 g/molThe mass of the solute Mg(NO3)2 = 3.744 gThe relation used in determining the number of moles is:
[tex]\mathbf {number \ of \ moles = \dfrac{mass}{molar \ mass}}[/tex]
[tex]\mathbf {number \ of \ moles = \dfrac{3.744 \ g}{148.3 \ g/mol}}[/tex]
[tex]\mathbf {number \ of \ moles = 0.0253 \ g/mol}[/tex]
∴
[tex]\mathbf{Molarity = \dfrac{moles \ of \ solute}{volume \ of \ the \ solution}}[/tex]
[tex]\mathbf{Molarity = \dfrac{0.0253 \ g/mol}{0.05 \ L}}[/tex]
[tex]\mathbf{Molarity =0.506 \ M}[/tex]
Therefore, we can conclude that the molar concentration of the solution is 0.506 M
Learn more about molar concentration here:
https://brainly.com/question/15532279?referrer=searchResults
The temperature of a plastic cup is 70 °F. It is filled with water that is
40 °F. Which of the following describes how thermal energy is
transferred?
Answer:
From the plastic cup to the water
Explanation:
The thermal energy is transferred from the plastic cup to the water inside the cup.
This is because thermal energy moves from a body at high temperature to one at lower temperature.
Thermal energy is the energy due to the motion of the particles of a medium. An increase in thermal energy leads to a rise in the average kinetic energy of the system. It moves over a gradient usually from a body with a high temperature to one at a lower temperature.What is the wavelength (in nm) of
blue light that has a frequency of
6.69 x 1014 s=?? (c = 3.00 x 108 m/s)
Answer:
λ = 0.45×10⁻⁶ m
Explanation:
Given data:
Wavelength of blue light = ?
Frequency of blue light = 6.69×10¹⁴ s⁻¹
Solution:
Formula;
Speed of wave = wavelength × frequency
Speed of wave = 3.00×10⁸ m/s
by putting vales,
3.00×10⁸ m/s = λ × 6.69×10¹⁴ s⁻¹
λ = 3.00×10⁸ m/s / 6.69×10¹⁴ s⁻¹
λ = 0.45×10⁻⁶ m
If an element has 3 valence electrons, what charge will likely form on its ion
The element will lose electrons to become stable if the valence shell contains 3 or fewer electrons. The production of cations is a sign of electron loss. The species having positive charge are called cations. As a result, the ion will get a positive charge.
What is ion ?An atom or molecule with a net electrical charge is known as an ion. Conventionally, the charge of an electron is thought to be negative; this charge is equal to and opposite to the charge of a proton, which is thought to be positive.
An atom will shed its valence electrons in order to become a charged ion and create an ionic bond with another atom if it lacks one to three of them.
A positive ion is created by taking electrons from a neutral atom, whereas a negative ion is created by adding electrons to a neutral atom. The quantity of protons remains constant during the formation of an ion.
Thus, the ion will get a positive charge.
To learn more an ion, follow the link;
https://brainly.com/question/14982375
#SPJ2
The value of ΔH° for the reaction below is -790 kJ. The enthalpy change accompanying the reaction of 0.95 g of S is __________ kJ.
23 2S (s) + 3O (g) 2SO (g
The enthalpy change accompanying the reaction of 0.95 g of S is -11.85 kJ
Further explanationGiven
ΔH° for the reaction is -790 kJ
Required
The enthalpy change
Solution
Reaction
2S (s) + 3O₂(g) = 2SO₃ (g)
mol of S(MW=32 g/mol) :
[tex]\tt mol=\dfrac{0.95}{32}=0.03[/tex]
For 2 mol S, the entalphy = -790kJ
The enthalpy change for 0.03 mol :
[tex]\tt \dfrac{0.03}{2}\times -790~kJ=-11.85~kJ[/tex]
The enthalpy change accompanying the reaction will be "-11.85 kJ".
Given:
Value of ΔH°,
-790 kJAccording to the question,
→ [tex]2S(s) +3O_2(g) =2SO_3(g)[/tex]
Mol of S will be:
= [tex]\frac{0.95}{32}[/tex]
= [tex]0.03[/tex]
hence,
The enthalpy change for 0.03 mol will be:
= [tex]\frac{0.03}{2}\times -790[/tex]
= [tex]-11.85 \ kJ[/tex]
Thus the answer above is correct.
Learn more:
https://brainly.com/question/13799877
PLEASE HELP URGENT!!
c) 2Al(s) + 3C12 (g) → 2AICI3
Reactant Side-
Product Side-
Oxidizing Agents
Reducing Agent
Answer:
Reactant Side = Al + Cl₂
Product Side = AlCl₃
Oxidizing Agents = chlorine
Reducing Agent = aluminum
Explanation:
Chemical equation:
2Al + 3Cl₂ → 2AlCl₃
In this chemical equation Al and Cl₂ are reactants while AlCl₃ is product.
2Al° + 3Cl₂° → 2Al⁺³Cl⁻¹₃
Oxidation:
Oxidation involve the removal of electrons and oxidation state of atom of an element is increased.
In given reaction Al is oxidized because oxidation increase from zero to +3. It is thus reducing agent.
Reduction:
Reduction involve the gain of electron and oxidation number is decreased.
In given reaction chlorine is reduced because its oxidation state is decreased from zero to -1. Chlorine is oxidizing agent.
Oxidizing agents:
Oxidizing agents oxidize the other elements and itself gets reduced.
Reducing agents:
Reducing agents reduced the other element are it self gets oxidized.
Hydrogen bonds are formed between molecules when hydrogen is covalently bonded to an element that has a
1
small atomic radius and low electronegativity
2
large atomic radius and low electronegativity
3
small atomic radius and high electronegativity
4
large atomic radius and high electronegativity
Submit Answer
Answer:
choice 3
Explanation:
Hydrogen bonding occurs when a H is bonded to a highly electronegative atom like F. Towards the upper right corner, most atoms have high electronegativity and small atomic radii, according to periodic trends.
Please give thanks :)
Hydrogen is covalently bonded to an element that has a small atomic radius and high electronegativity.
• An intermolecular attractive force in which an atom of hydrogen, which is bonded covalently to a small, highly electronegative atom is known as a hydrogen bond.
• Hydrogen bonds are very strong in comparison to other dipole interactions.
• A typical hydrogen bond exhibits a strength of about 5 percent of that of a covalent bond.
• Hydrogen bonding takes place only in molecules where hydrogen bonding is bonded covalently to one of the three elements, that is, oxygen, fluorine, or nitrogen.
Thus, correct answer is option 3.
To know more about:
https://brainly.com/question/3971474
what is the atomic mass of an atom equal to?
Answer: A property closely related to an atom's mass number is its atomic mass. The atomic mass of a single atom is simply its total mass and is typically expressed in atomic mass units or amu. By definition, an atom of carbon with six neutrons, carbon-12, has an atomic mass of 12 amu.
Hope this helps....... Stay safe and have a Merry Christmas!!!!!!!! :D
Carbonic acid (H2CO3) forms when carbon dioxide (CO2) dissolves in water
according to this equation:
CO2 + H2O
H2CO3
How many moles of CO2 must dissolve in excess water to produce 12 moles of
H2CO3?
Enter your answer as a number only; no units.
Answer:
12 molcules
Explanation:
distruibtive property.
How many moles of Ca atoms are in 1 mol of CaSO4?
Answer:
6.02 x 10²³ atoms
Explanation:
Given parameters:
Number of moles CaSO₄ = 1 mole
Unknown:
Number of Ca atoms in the given compound = ?
Solution:
The given compound is:
CaSO₄
1 mole of CaSO₄ is made up of 1 mole of Ca atoms
Now;
1 mole of any substance contains 6.02 x 10²³ atoms
1 mole of Ca atoms will also contain 6.02 x 10²³ atoms
Pls help if you can
(It’s actually science i just couldn’t find it)
Answer:
Here you go!!
Explanation:
Which best describes the path of solar radiation? from the surface of the Earth to the Sun, where it is absorbed from the Sun to the surface of the Earth, where it is absorbed or reflected from the surface of the Earth to the Sun, where it is absorbed or reflected from the Sun to the surface of the Earth, where it is reflected
Answer:
from the Sun to the surface of the Earth, where it is absorbed or reflected
Explanation:
The solar radiation that emerges out of the sun and that reaches the surface of the Earth is sunlight. There are numerous constituents and particles present in the atmosphere that absorbs the solar radiation. These radiations are weakened by these constituents. Later, these radiations gets scattered in the atmosphere. Some amount of he solar radiation that reaches the Earth's surface is absorbed and some is reflected back.
Answer:
B
Explanation:
how many moles of CO2 are in 210 liters at STP of the compound
Answer:
9.4 mol CO₂
General Formulas and Concepts:
Chemistry - Gas Laws
Using Dimensional AnalysisSTP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 KExplanation:
Step 1: Define
210 L CO₂ at STP
Step 2: Identify Conversions
22.4 L = 1 mol at STP
Step 3: Convert
[tex]210 \ L \ CO_2(\frac{1 \ mol \ CO_2}{22.4 \ L \ CO_2} )[/tex] = 9.375 mol CO₂
Step 4: Check
We are given 2 sig figs. Follow sig fig rules and round.
9.375 mol CO₂ ≈ 9.4 mol CO₂
calculate the mass percent of water in CaCrO4.H2O
Answer:
10.35%
Explanation:
Find the molar mass of water, using your periodic table: 18.02 g. Then find the molar mass of the total substance: 174.10 g.
Divide the molar mass of water by the molar mass of the total substance and multiply 100%. Doing this, you get 10.35%.
Does deforestation cause the amount of carbon dioxide in the air to increase or decrease?
Answer:
Explanation:
Deforestation has an adverse affect on air by reducing the amount of oxygen and increasing the amount of carbon dioxide as well as contributing to global warming.
Acetaminophen is the active ingredient in Tylenol.
a. Write the molecular formula of the compound.
b. What is the hybridization state of each C, N, and O atom?
Explanation:
a. Write the molecular formula of the compound.
Acetaminophen contains 8 carbon atoms, 9 Hydrogen atoms, 1 Nitrogen atom and 2 Oxygen atoms.
The molecular formular is given as; C8H9NO2
b. What is the hybridization state of each C, N, and O atom?
From the image attached;
All the carbon atoms in the benzene ring has hybridization of sp2.
The carbon that is doubly bonded (carbonyl) to the oxygen has hybridization of sp2
The last carbon to the right has hybridization of sp3
The hybridization of nitrogen in the compound is sp3 hbridized.
Oxygen atom in alcohol is sp3 hybridised
Oxgen in the carbonyl group is sp2 hybridized.
Select the correct answer. How does a catalyst increase the speed of a reaction?
Answer:
A catalyst is a substance that can be added to a reaction to increase the reaction rate without getting consumed in the process. Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism.
Explanation:
you take 295.5 g of a solid at 30.0 c and let it melt in 425 g of water. the water temperature decreases from 85.1 c to 30.0 c. calculate the heat of fusion of this solid
Answer:
[tex]\Delta _{fus}H=332 \frac{J}{g}[/tex]
Explanation:
Hello!
In this case, since the heat of fusion of a solid substance stands for the energy required to melt it, which is a phase transition from solid to liquid, we can see that the heat lost by water is that gained by the solid, so we can write:
[tex]Q_{solid}=-Q_{w}[/tex]
Thus, by using the water data and its specific heat (4.184), we obtain:
[tex]Q_{solid}=-m_{w}C_{w}(T_f-T_i)\\\\Q_{solid}=-425g*4.184\frac{J}{g\°C}*(30.0-85.1)\°C\\\\ Q_{solid}=97,978.82J=98.0kJ[/tex]
Next, since the heat of fusion of a substance is usually represented in terms of energy per amount of substance, we use the mass of solid to obtain:
[tex]\Delta _{fus}H=\frac{98.0kJ}{295.5g}\\\\ \Delta _{fus}H=0.332\frac{kJ}{g}=332 \frac{J}{g}[/tex]
Best regards!
The heat of fusion of the solid is 0.332 KJ/g or 332 J/g
We'll begin by calculating the heat loss by the water. This can be obtained as follow:
Mass of water (M) = 425 g
Initial temperature of water (T₁) = 85.1 °C
Final temperature (T₂) = 30 °C
Change in temperature (ΔT) = T₂ – T₁ = 30 – 85.1 = –55.1 °C
Specific heat capacity of water (C) = 4.184 J/gºC
Heat loss (Q) =?Q = MCΔT
Q = 425 × 4.184 × –55.1
Q = –97978.82 J
Divide by 1000 to express in KJ
Q = –97978.82 / 1000
Q = –97.98 KJ Finally, we shall determine the heat fusion of the solid.Heat loss by water = –97.98 KJ
Heat gained by the solid (Q) = 97.98 KJ
Mass of solid (m) = 295.5 g
Heat of fusion (Hf) =?Q = m•Hf
97.98 = 295.5 × Hf
Divide both side by 295.5
Hf = 97.98 / 295.5
Hf = 0.332 KJ/g or 332 J/gLearn more: https://brainly.com/question/15563205