If a sample container of CO2 (g), occupies a volume of 435 mL at a pressure of 0.987 atm and a temperature of 25 C. What is the volume of gas at STP?

The volume is 0,393 Liters (393 ml)

Explanation:

We use the formula PV=nRT. We clear n (number of moles). STP conditions are 1 atm pressure and 273 K temperature. The temperature in Kelvin= 25+273=298K. The volume in L: 435/1000= 0,435 L.

PV=nRT n=PV/RT n=(0,987 atmx0, 435 l)/(0,082 l atm/K mol x298K)

n=0,0176 mol

In conditions STP:

PV= nRT  V=(nRT)/P

V= 0,0176 mol x 0,082 l atm /K mol  / 1 atm = 0,393 L

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa