Consider the mixture of ethanol, c2h5oh, and o2. how many molecules of co2, h2o, c2h5oh, and o2 will be present if the reaction goes to completion?

Answers

Answer 1

Answer:

The reaction between ethanol and oxygen must be a combustion reaction to give carbon dioxide and water as products.

The reaction between ethanol, $C_2H_5OH$ and oxygen, $O_2$ is as follows:

$C_2H_5OH+O_2\rightarrow CO_2+H_2O$

In order to balance the reaction (the number of atoms of each element in the reaction are same on both the sides that is product and reactant), $O_2$ is multiplied by 3 in the reactant side and $CO_2$ is multiplied by 2 and $H_2O$ is multiplied by 3 on product side.

So, the balanced reaction is:

$C_2H_5OH+3O_2\rightarrow 2CO_2+3H_2O$

From the balanced reaction it is clear that 1 mole of $C_2H_5OH$ reacts with 3 moles of $O_2$ to give 2 moles of $CO_2$ and 3 moles of $H_2O$ .

Since, 1 mole = $6.022* 10^(23)$ molecules (Avogadro's number)

So,

Number of molecules of $C_2H_5OH$ = $6.022* 10^(23)$ molecules.

Number of molecules of $O_2$ = $6.022* 10^(23)* 3 = 18.066* 10^(23)$ molecules.

Number of molecules of $CO_2$ = $6.022* 10^(23)* 2 = 12.044* 10^(23)$ molecules.

Number of molecules of $H_2O$ = $6.022* 10^(23)* 3 = 18.066* 10^(23)$ molecules.

Answer 2

Answer:

Answer : The number of molecules of $CO_2,H_2O,C_2H_5OH\text{ and }O_2$ are 2, 3, 1 and 3 respectively.

Explanation :

The given balanced chemical reaction is,

$C_2H_5OH+3O_2\rightarrow 2CO_2+3H_2O$

Balanced chemical reaction is the reaction in which the number of atoms of an individual elements present on reactant side must be equal to the product side.

The species present on the left side of the right arrow is the reactant and the species present on the right side of the right arrow is the product.

From the balanced chemical reaction, we conclude that there are 1 molecule of $C_2H_5OH$ , 3 molecules of $O_2$ , 2 molecules of $CO_2$ and 3 molecules of $H_2O$ .

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Which type of change must occur to form a compound?(1) chemical (3) nuclear(2) physical (4) phase

Answers

To form a compound, we need to change the structure of the molecules and mostly form new bonds between molecules to result in a compound.

A nuclear change changes the element completely and forms new elements, so nuclear is a wrong choice.
A phase change only changes the phase of the element (solid, liquid or gas) but does not change structure, so phase is a wrong choice
A physical change does not change the structure of the molecules, so physical is also a wrong choice.

On the other hand, a chemical change changes the structure of molecules and/or breaks/forms bonds.
Therefore, the right choice is chemical.

Answer:

1) Chemical

Explanation:

Which colligative property is extremely important to the functioning of living organisms?a. osmotic pressure
b. boiling-point elevation
c. vapor-pressure lowering
d. freezing-point depression

Answers

I think the correct answer is A. Osmotic pressure is the colligative property that is extremely important to the functioning of living organisms. The osmotic pressure is the pressure required to prevent osmosis from happening.

Answer:

its D

Explanation:

i just got it correct on usatestprep

A 25.5 liter balloon holding 3.5 moles of carbon dioxide leaks. If we are able to determine that 1.9 moles of carbon dioxide escaped before the container could be sealed, what is the new volume of the container?

Answers

Answer: The new volume of the container is 13.8 L

Explanation:

To calculate the new volume of the system, we use the equation given by Avogadro's Law. This law states that volume of the gas is directly proportional to the number of moles of the gas at constant pressure.

Mathematically,

$(V_1)/(n_1)=(V_2)/(n_2)$

where,

$V_1\text{ and }n_1$ are the initial volume and moles of the gas.

$V_2\text{ and }n_2$ are the final volume and moles of the gas.

We are given:

$V_1=25.5L\nn_1=3.5\nV_2=?\nn_2=1.9$

Putting values in above equation, we get:

$(25.5)/(3.5)=(V_2)/(1.9)\n\nV_2=13.8L$

Thus the new volume of the container is 13.8 L

The solid and liquid phases of water can exist ina state of equilibrium at 1 atmosphere of pressure
and a temperature of
(1) 0°C (3) 273°C
(2) 100°C (4) 373°C

Answers

Answer: 0°C

Explanation:
Water undergoes phase changes at 1 atm pressure as follows:
Solidification, change from water to ice occurs at 0°C.
Evaporation, change from liquid to gas occurs at 100°C.

Pls help its due in a few minutes

Answers

Answer:

Theory

Explanation:

When lithium reacts with bromine to form the compound LiBr, each lithium atom ....

Answers

Loses one electron and becomes a positively charged ion.

Other Questions

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Which best describes a reaction in a state of equilibrium? A. The rates of the forward and reverse reactions are zero and the concentrations of products and reactants are equal. B. The rate of the forward reaction equals the rate of the reverse reaction and the concentrations of products and reactants are equal. C. The rates of the forward and reverse reactions are zero and the concentrations of products and reactants are constant. D. The rate of the forward reaction equals the rate of the reverse reaction and the concentrations of products and reactants are constant.

What moves in or out of a substance during a change of state?

Unknown element X combines with oxygen to form the compound XO2. If 44.0 grams of element X combines with 8.00 grams of oxygen, what is the atomic mass of element X?A. 16 amu B. 44 amu C. 88 amu D. 176 amu E. 352 amu