Solve each of the following problems. Show all balanced chemical equations, math
ID: 1047789 • Letter: S
Question
Solve each of the following problems. Show all balanced chemical equations, mathematical equation, labels, and work. Only one point will be given for the correct answer without supporting work. Place your answer on the line to the right of the problem What will 1. A nitrogen sample occupies a volume of 275 cm' when its pressure is 745 mm-Hg. What w the volume be when the pressure is increased to15 atmospheres? Answer #1 2. Nitrogen gas occupies a volume of 100 mL when its temperature is 127°C. What will be the volume when the temperature is decreased to-20C? Answer #2 3. Some propane gas in a constant volume tank at a pressure of 5 atm and a temperature of -127 when the contents of the tank is heated to a temperature of 27°C, what will be the pressure? Answer #3Explanation / Answer
initial Final
P1 = 745mmHg p2 = 1.5atm
= 745/760 = 0.98atm
V1 = 275cm^3 V2 =
P1V1 = P2V2
V2 = P1V1/P2
= 0.98*275/1.5 = 179.6cm^3
2. Intial Final
T1 = 127C = 127+273 = 400K T2 = -2C = -2+273 = 271K
V1 = 100ml V2 =
V1/T1 = V2/T2
V2 = V1T2/T1
= 100*271/400 = 67.75ml
3. intial Final
P1 = 5atm P2 =
T1 =-127C = -127+273 = 146K T2 = 27C = 27+273 = 300K
P1/T1 = P2/T2
5/146 = P2/300
P2 = 5*300/146 = 10.27atm
5. PV = nRT
PV = WRT/M
P = 800/760 = 1.053atm
T = 77C = 77+273 = 350K
V = WRT/PM
= 66*0.0821*350/1.053*44 = 40.93L
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.