Chemistry, 04.09.2019 22:20 bionicboy03120440

The combustion of ethanol (c2h5oh) takes place by the following reaction equation.
c2h5oh (l) + 3 o2 (g) → 2 co2 (g) + 3 h2o (g)
what is the volume of co2 gas produced by the combustion of excess ethanol by 23.3 grams of o2 gas at 25°c and 1.25 atm?

Answers: 1

Show answers

Answers

Answer from: coleman4405

$\boxed{\text{9.50 L}}$

Explanation:

We will need a balanced chemical equation with masses and molar masses, volumes, and concentrations, so, let's gather all the information in one place.

M_r: 32.00

C₂H₅OH(l) + 3O₂(g) → 2CO₂(g) + 3H₂O(g)

m/g: 23.3

(a) Moles of O₂

$\text{Moles of O}_{2} =\text{23.3 g O}_{2} \times \dfrac{\text{1 mol O}_{2}}{\text{32.00 g O}_{2}} =\text{0.7821 mol O}_{2}$

(b) Moles of CO₂

The molar ratio is 2 mol CO₂ = 3 mol O₂

$\text{Moles of CO$_{2}$}= \text{0.7821 mol O}_{2} \times \dfrac{\text{2 mol CO$_{2}$}}{ \text{3 mol O}_{2}} = \text{0.4854 mol CO$_{2}$}$

We can use the Ideal Gas Law to calculate the volume.

T = 25 °C = 298.15 K

$\begin{array}{rcl}pV & = & nRT\\1.25V & = & 0.4854 \times 0.08206 \times 298.15\\1.25V & = & 11.88\\V & = & \textbf{9.50 L}\\\end{array}\\\text{The volume of CO$_{2}$ produced is $\boxed{\textbf{9.50 L}}$}$

Answer from: Quest

a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.

Write 15 uses of a mercury barometer along with its characterestics

Answer from: Quest

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).

Another question on Chemistry

Chemistry, 22.06.2019 04:00

Mitosis is a type of cell division that produces cells that are identical to the parent cell. meiosis is a different type of cell division that produces cells that carry have a genetic material of the parent cell. based on the information provided how do the purpose of mitosis and meiosis differ

Answers: 3

Answer

Chemistry, 22.06.2019 05:30

Liv sheldon given the balanced equation for an organic reaction: c2h2 + 2cl2 → c2h2cl4 this reaction is best classified as *

Answers: 1

Answer

Chemistry, 22.06.2019 07:00

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane

Answers: 2

Answer

Chemistry, 22.06.2019 13:30

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves

Answers: 1

Answer

You know the right answer?

The combustion of ethanol (c2h5oh) takes place by the following reaction equation.
c2h5oh (l)...

Questions