Question

If a sample of N2, at a volume of 40mL is heated from 20°C to 40°C what is the new volume??

Answer 1

Answer:Ne Volume = 80mL.

Explanations

GIVEN :

• Volume (V1) = 40ml

,

• Temperature (T1)= 20° C

,

• Temperature (T2) = 40°C

,

• Volume (V2) = ?

We will apply Charles law formula : that states that volume is directly proportional to its absolute temperature, if the pressure remains constant

`(V_1)/(T_1)=\text{ }(V_2)/(T_2)`

Substituting the given parameters into the above formula, we get that V2 =

`\begin{gathered} V_2=\frac{V_1*\text{ T}_2}{T_1} \\ \text{ =}\frac{40\text{ mL * 40 }\degree C}{20\degree C\text{ }} \\ \therefore V_2=\text{ 80 mL } \end{gathered}`

Therefore , the new volume = 80mL