Thank you for the opportunity to help you with your question!
In both questions we are going to use the ideal gas law PV=nRT
Q1 : So we have n=(PV)/(RT)
P=149 kPa, V=15.9 L, R=8.314 kPa•L/mol•K and T=273+28=301 K
So n=(149*15.9)/(8.314*301)=0.95 moles
Q2 : We have P=(nRT)/V or n=m/M so P=(mRT)/(M*V)
T=273+100= 373 K and M(CO2)=44 g/mol
Please let me know if you need any clarification. I'm always happy to answer your questions.
15 Million Students Helped!
Sign up to view the full answer