Will give you know what to first correct answer

A sample of nitrogen gas, stored in a 2.96-L container at 32.0°C, exerts a pressure of 4.27 atm. Calculate the number of moles o

inysia [295]

Answer: The number of moles of nitrogen gas is 0.505 moles.

Explanation:

To calculate the number of moles of nitrogen gas, we use ideal gas equation, which is:

$PV=nRT$

where,

P = pressure of the gas = 4.27 atm

V = Volume of the gas = 2.96 L

T = Temperature of the gas = $32.0^oC=[32.0+273]K=305K$

R = Gas constant = $0.0821\text{ L. atm }mol^{-1}K^{-1}$

n = number of moles of gas = ?

Putting values in above equation, we get:

$4.27atm\times 2.96L=n\times 0.0821\text{ L atm }mol^{-1}K^{-1}\times 305K\\n=0.505mol$

Hence, the number of moles of nitrogen gas is 0.505 moles.

6 0

4 years ago

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The ΔHvap of a certain compound is 49.09 kJ·mol–1 and its ΔSvap is 53.69 J·mol–1·K–1. What is the boiling point of this compound

rusak2 [61]

Hey there !

Convert Joule to KJ :

1 j ---------------- 0.001 kj
53.69 j ----------- Kj

Kj = 53.69 * 0.001

=> 0.05369 Kj

T = ΔH / ΔS

T = 49.09 / 0.05369

T = 914.32ºC

3 0

3 years ago

NEED HELP!PLEAE WITH CHEMISTRY!

andriy [413]

Answer:

ionic

Explanation:

4 0

3 years ago

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As two chemicals react, the chemical bonds between the atoms in each react and break. Then, new bonds form. We call this process

EastWind [94]

Answer:

False is an answer.

8 0

4 years ago

I need ur help guys please. 50 pts

Allushta [10]

Answer:

Sodium Chloride - Food flavoring, preservation and desiccation, fermentation processes, wood pulp bleaching in paper industry, buna and neoprene production in plastic industry.

Sodium Hydroxide - Bar soap and detergent production, drain cleaning, paper manufacturing, purification of bauxite ore prior aluminium production, artificial fibers production, oil refining.

Sodium Carbonate - Glass manufacturing, water softening, food additive, soap manufacturing, antiacid production.

Sodium Sulphate - Drugs for therapeutical use, wood pulp production in paper industry, soap and detergent production.

Potassium Nitrate - Fertilizer production, rocket propellant and gunpower production, wastewater treatment.

Potassium Chlorate - Oxygen-supply systems in aerospace applications.

Potassium Permanganate (VII) - Treatments of fungi and bacterial infections, wasterwater treatment and gastric irrigation.

Potassium Chloride - Hypoalkemia treatment, flavor enhancing in food.