Astudent collects 625 ml of oxygen at a temperature of 24°c and a pressure of 0.899 atm. how many moles of oxygen did the student collect?

0.023 moles

Explanation:

Given that:

Pressure = 0.899 atm

Temperature = 24 °C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15  

So,  

T = (24 + 273.15) K = 297.15 K

Volume = 625 mL

Also, 1 mL = 10⁻³ L

So, volume = 0.625 L

Moles of the gas = ?

Using ideal gas equation as:

PV=nRT

where,  

P is the pressure

V is the volume

n is the number of moles

T is the temperature  

R is Gas constant having value = 0.0821 L.atm/K.mol

Applying the equation as:

0.899 atm × 0.625 L=n × 0.0821 L.atm/K.mol ×  297.15 K

⇒n = 0.023 moles

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?