Less than 6.0 grams of copper is formed, and some aluminum is left in the reaction mixture
Stoichiometric calculationsFrom the equation of the reaction:
3CuCl2 + 2Al → 2AlCl3 + 3Cu
Mole ratio of CuCl2 and Al = 3:2
Mole of 1.5 g aluminum foil = 1.5/26.98
= 0.06 moles
Mole of 14 g CuCl2 = 14/134.45
= 0.10 moles
For every 3 moles of CuCl2, 2 mole of Al is needed.
Thus, for 0.10 moles of CuCl2, the mole of Al needed would be:
0.10 x 2/3 = 0.07 moles
CuCl2 is, thus, slightly in excess while Al is the limiting reagent.
Mole ratio of Al and Cu = 2:3
For 0.06 mole Al, the mole of Cu will be: 0.06x3/2 = 0.09 moles
Mass of 0.09 moles Cu = 0.09 x 63.55
= 5.71 g
Thus, less than 6.0 grams Cu is formed while a little CuCl2 would be left in the reaction mixture.
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hello people ~
Which of the following does show an oxidation reaction?
(a) Gain of oxygen
(b) Loss of oxygen
(c) Gain of hydrogen
(d) None of the above
Answer:
Loss of oxygen
Explanation:
Shortcut defination of oxidation and reduction
Oxidation=LEO(Loss of Electron)Reduction=GEO(Gain of Electron)Essential Question: How will the weight of a grape change if you put it in cold and room temperature water? Can someone please help me come up with a claim for my Essential question?
Answer:
bc the water molecules freeze
A projectile moves horizontally with ____?____motion
HELP PLEASE
Answer:
hi
Explanation:
hi
A car with a mass of 700 kg is moving with a speed of 20m/s.
Calculate the kinetic energy of the car.
Answer:
The answer is 140,000 JExplanation:
The kinetic energy of an object can be found by using the formula
[tex]KE = \frac{1}{2} m {v}^{2} \\ [/tex]
where
m is the mass
v is the velocity
From the question we have
[tex]KE = \frac{1}{2} \times 700 \times {20}^{2} \\ = 350 \times 400[/tex]
We have the final answer as
140,000 JHope this helps you
how many millimoles of solid naoh must be added to 50.0 milliliters of 0.20 molar hocl to obtain a buffewr solution that has a ph of 7.49
The amount of millimoles of solid naoh that must be added to 50.0 milliliters is: 5.0 mmol of NaOH.
Millimoles of solid naohThe [H+] at pH 7.49 is:
[H+] = 10–^7.49
[H+]= 3.24×10–^8 M
And when the solution is half-neutralized pH will be:
pH = pKa while [OCl– ]÷[HOCl] = 1
Now let find the millimoles of solid naoh:
0.20 mol HOCl÷1 L× 50.0 mL
= 10.0 mmol HOCl
Half of 10.0 mmol HOCl will be added
Millimoles of solid naoh=10.0 mmol HOCl÷2
Millimoles of solid naoh= 5.0 mmol of NaOH
Inconclusion the amount of millimoles of solid naoh that must be added to 50.0 milliliters is: 5.0 mmol of NaOH.
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Which energy is required when we convert an atom into an ion?
Select one:
O a. ionization energy
O b. electron affinity
O c. binding energy
O d. electronegativity
Answer:
ionization energy is the answer
i would Luke to ??
Answer:
1 answer
Explanation:
how many carbon monoxide molecules are in .75 moles of carbon dioxide? just need answer
Answer:
A standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles.
All the data is given in the question and these are as follows:-
Moles - 0.75
Na - 6.022*10^{23
The formula we are using to find the molecules is as follows:-
n = \frac{molecule}{Na}n=
Na
molecule
After, putting the value and solving it. we will get
0.75 * 6.022*10^2^3 = 4.5165*10^{23
What is the potential energy of a molecule?
A. Energy gained form heating the molecule
B. Energy stored in molecular bonds
C. Energy lost as heat to the surroundings
D. Energy of motion during collisions
Answer:
I guess the answer is D point
Answer:
B. Energy stored in molecular bonds
plzzzz ...... Why is the result of CO2 bonds zero?
Answer:
this is right because carbon and oxygen complete its octet
How much heat is absorbed when a 10.0-g sample of water is changed from 23.0⁰C to 32.0⁰C?
Answer:
376.56J
Explanation:
The amount or quantity of heat absorbed can be calculated using the formula:
Q = m × c × ∆T
Where; Q = amount of heat absorbed (J)
m = mass of water (g)
c = specific heat capacity of water (J/g°C)
∆T = change in temperature (°C)
According to the provided information in this question; m = 10.0g, c = 4.184J/g°C, final temperature = 32°C, initial temperature = 23°C
Q = m × c × ∆T
Q = 10 × 4.184 × (32 - 23)
Q = 41.84 × 9
Q = 376.56J
Pleaseee help me with this
Answer:
The correct answer should be (A) 100%.
Explanation:
Since both the bull & the cow are hom0zygous (meaning they each have two identical alleles in their genes) and the black bull possesses the dominant gene, we can assume that our Punnett square should look like the model I attached below. Since "Bb" would contribute to the percentage of black-colored offspring, and all of the squares end up with "Bb", that means that 4 out every 4 offspring will be dark in color. Or, put more simply, the percentage of the offspring that will be black in color is 100%.
A reversible process is one that ________
[A] must be carried out at high temperature
[B] must be carried out at low temperature
[C] happens spontaneously
[D] can be reversed with no net change in either system or surroundings
[E] is spontaneous in both directions
Answer:
[D]can be reversed with no net change in either system or surroundings
A reversible process is one that can be reversed with no net change in either system or surroundings. Therefore, option (D) is correct.
What are reversible reactions?A thermodynamic process can be reversible if the process can be turned back to both the system and the surroundings to return to their original states, with no other change in the universe.
No such processes as reversible processes can exist and these processes can easily be defined as idealizations or models of real processes.
A few examples of Reversible Processes: are the extension of springs, slow adiabatic compression or expansion of gases, electrolysis, the frictionless motion of solid, slow isothermal compression or expansion of gases
An irreversible process is a process in which the system and the surroundings do not return to their actual condition once the process is initiated. Examples of irreversible processes are Heat transfer, Diffusion, and electricity flow through a resistance.
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When the following equation is balanced:
Al + NiSO4 ® Al2(SO4)3 + Ni
the correct set of coefficients would be:
Answer:
2Al + 3NiSO4 -> Al2(SO4)3 + 3Ni
Explanation:
You just had to balance the equation by looking at Al2(SO4)3. It helps to pick the right coefficients for other components.
The correct set of coefficients for the balanced equation is: 2, 3, 1, 3.
When balancing the equation: 2Al + 3NiSO₄ → Al₂(SO₄)₃ + 3Ni .The coefficients indicate the number of each compound or element required for the equation to be balanced. In this case, the equation is balanced by ensuring that the number of atoms of each element is the same on both sides of the equation.
By placing the coefficients 2 and 3 in front of Al and NiSO₄, respectively, it ensures that there are an equal number of aluminum and nickel atoms on both sides. Additionally, the coefficient 3 in front of Ni and Al₂(SO₄)₃ ensures an equal number of nickel and sulfate groups.
Balancing equations is important because it follows the principle of conservation of mass, ensuring that no atoms are gained or lost during a chemical reaction. The set of coefficients chosen allows for the equation to meet this principle and maintain a balanced representation of the chemical reaction.
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Please help me................I beg you.........
Answer:
the problem is that Gary is not the smartest snail.the hypothesis is that he thinks he can get smarter by eating super snail food everyday.
hope this helps
Distinguish between electron affinity and electronegativity
The main difference between electronegativity and electron affinity is that electronegativity is the ability of an atom to attract electrons from outside as far as electron affinity is the amount of energy an atom receives when an electron. Electron negativity is applied to a single atom.
Can some one please help
Answer:
Chadwick-he discovered the neutron. He discovered this by demonstrating a neutral particle with a mass the same as a proton through a reaction between gramma Ray's and a wax sample.
Rutherford-he discovered the concept of radioactive half-life, the radioactive element radon, and named alpha and beta radiation.
j.j.Thompson discovered that atoms where made up of smaller components. This had major effects for the field of physics.
:)
The diagram shows two molecules (A and B) with different
rates of travel on silica gel plate. Which method of separation
would be most effective to separate a mixture of A and B?
Answer: chromatography
Explanation:
Complete combustion of a 0.600-g sample of a compound in a bomb calorimeter releases 24.0 kj of heat. the bomb calorimeter has a mass of 1.30 kg and a specific heat of 3.41 j/(gi°c). if the initial temperature of the calorimeter is 25.5°c, what is its final temperature? use q equals m c subscript p delta t.. 30.9°c 34.5°c 44.0°c 51.5°c
The final temperature of the bomb calorimeter is 30.9°C.
What is combustion reaction?Combustion reactions are those reactions in which a compound completly decompose in to carbon dioxide and water molecule.
The final temperature will be calculated by using the equation:
Q = mc(T₂ – T₁), where
Q = relesed heat from calorimeter = 24kJ = 24000J
m = mass of calorimeter = 1.30kg = 1300g
c = specific heat of calorimeter = 3.41 J/(g°C)
T₁ = initial temperature of calorimeter = 25.5°C
T₂ = final temperature of calorimeter = to find?
On putting all these values on the above equation and calculate for T₂, we get
T₂ = 24000/(1300)(3.41) + 25.5
T₂ = 30.9°C
Hence, correct option is (1) i.e. 30.9°C.
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Answer:
30.9
Explanation:
right on edge 2022
weaving nearly died out because factories can make fabrics faster than people who create them by hand. question 2 options:
true OR false
Answer:
True
Explanation:
A hand weavers would take much more time in their craft than large factories did, their industry began to decline and be replaced by industrial machines.
what would the formula be if the products RbCI decomposed
A decomposition reaction occurs when one reactant breaks down into two or more products. It can be represented by the general equation: AB → A + B. In this equation, AB represents the reactant that begins the reaction, and A and B represent the products of the reaction.
RbCI = rubidium chloride
Identify the products of the complete combustion of methane. ............................................................... and ...............................................................
carbon(iv) oxide and water.
B. How do the stars' radii compare with their mass?
Answer:
Answer: The radii of main-sequence stars increases as mass increases. Main Sequence stars? Answer: Giants have larger radii compared to main-sequence stars of the same luminosity.
Explanation:
A man runs 100 meters in 19 seconds. Find the velocity of man.
Plz help me to solve this problem
Answer:
[tex]\boxed {\tt 5.26315789 \ m/s}[/tex]
Explanation:
One way to find velocity is by dividing the distance by the time.
[tex]v=\frac{d}{t}[/tex]
The distance traveled by the man is 100 meters.
The time is 19 seconds.
[tex]d=100 \ m \\t= 19 \ s[/tex]
[tex]v=\frac{100 \ m}{19 \ s}[/tex]
Divide.
[tex]v=5.26315789 \ m/s[/tex]
The man's velocity is 5.26315789 meters per second.
What’s the type of reaction and word equation for: C2H6O+2O2= 2CO2 + 3H2O
Answer:
Ethenol + Oxygen = water + Carbon Dioxide C2H5OH + 3O2 = 2CO2 + 3H2O
Explanation:
What is the chemical equations for: Steam to
hydrogen using buring magnesium.
[tex]\huge\bold\red{Answer:-}[/tex]
It’s the same as when magnesium reacts with liquid water, only faster:
Mg + 2H₂O → MgO + H₂.
The difference is that in water, the reaction has a second step, converting MgO to Mg(OH)₂.
HOPE IT HELPS♥A(n) ____________ acts to maintain a relatively stable concentration of hydrogen ions in a solution.
Answer:
buffer
Explanation:
please balance the equation i really need it quick 50 points and marked brainliest answer
Answer:
2C3H8S +13O2 =6CO2 +8H20 +2SO3
Answer:
get from (4,1) to (2,9) go up 8 and over 2 left (-2) - (4 - 2, 1 + 8), do this again (2 - 2, 9+8) and end up at (0,17) which is the y how do you change 7x+3y=3 into slope intercept form.
get from (4,1) to (2,9) go up 8 and over 2 left (-2) - (4 - 2, 1 + 8), do this again (2 - 2, 9+8) and end up at (0,17) which is the y how do you change 7x+3y=3 into slope intercept form.
get from (4,1) to (2,9) go up 8 and over 2 left (-2) - (4 - 2, 1 + 8), do this again (2 - 2, 9+8) and end up at (0,17) which is the y how do you change 7x+3y=3 into slope intercept form.
get from (4,1) to (2,9) go up 8 and over 2 left (-2) - (4 - 2, 1 + 8), do this again (2 - 2, 9+8) and end up at (0,17) which is the y how do you change 7x+3y=3 into slope intercept form.
The bond line formula,
represents the molecular formula
B
A
C8H18
C8H15
Answer:
C8H18
Explanation:
What is the volume of an unknown object that has a mass of 5.0 g and density of 4.5 g/mL ?