Question

1. A 15.0-L sample of carbon dioxide, at 742 mm Hg and 10. °C, is changed to 778 mm Hg and 40. °C. How is the volume affected? Standard pressure, expressed in mm Hg, is 760 mm Hg.
2. A 425-mL sample of nitrous oxide, originally at STP, is subjected to new conditions of ?23 °C and 745 mm Hg. What is its new volume?
3. A 3.5-L gas sample is held at 0.0 °C and 2.3 atm. To what pressure must the system be adjusted to produce 4.6 L of gas at 25 °C?

Answer 1

given
v=15.0 L
P=742 mm Hg
T= 10.C

and
P_2 = 778 mm HG
T_2= 40 C
find V_2= ?

first convert Pressure mmHG to atm
1atm = 760 mm Hg
once again temperature C to Kelvin
the given values are for v , p_1 , P_2 ,t_1 and t_2
P T and v twice
so you have to apply combine gas law \[\large\rm \frac{ P_1 V_1}{ T_1}= \frac{P_2 V_2}{T_2}\]

Answer 2

2nd question ) what is STP ?
what would be the pressure and T at STP???
review previous posts