## anonymous one year ago what would be the pressure of a given mass of a gas, if its volume and temperature are doubled ............. ?

1. anonymous

Considering an ideal gas, you can use the relation: $PV=nRT$ taking $$n$$ (the nomber of molecules) as a constant, since the mass is not changing, and since $$R$$ is the ideal gas constant we get: $\frac{PV}{T}=constant$ so if you double the volume and temperature you must get the same constant value for that expression, and then: $\frac{P_1V_1}{T_1}=\frac{P_2(2V_1)}{2T_1}$ what is the relation between the new pressure $$P_2$$ and $$P_1$$ ??

2. anonymous

he wants complement one word

3. anonymous

consentration

4. anonymous

concentration !

5. anonymous

that word is contained in the response to my question: what is the relation between the new pressure $$P_2$$ and $$P_1$$ ?? What happens if we cancel out the 2's in the right hand side?

6. anonymous

yes concentration