10) A gas sample contains 4.00 g of CH4 and 2.00 g of He. What is the volume of the sample at STP? A) 32.0 L B) 132 L C) 16.8 L D) 5.64 L E) 22.4 L 2. 15 V= ner - Y U=(.15)1.0820)(213) Gi) 16.8 11) Assuming no heat loss, what final temperature is expected after 50.0 g of water at 20.0 °C is mixed with 30.0 g of water at 80.0 °C? (The specific heat of water is 4.18 J/g K) A) 17.5 °C B) 170. °C C) 37.5 °C D) 42.5 °C E) 50.0 °C 50g4.18)(20-x)304.18 Xy-g0) 2
10) A gas sample contains 4.00 g of CH4 and 2.00 g of He. What is the volume of the sample at STP? A) 32.0 L B) 132 L C) 16.8 L D) 5.64 L E) 22.4 L 2. 15 V= ner - Y U=(.15)1.0820)(213) Gi) 16.8 11) Assuming no heat loss, what final temperature is expected after 50.0 g of water at 20.0 °C is mixed with 30.0 g of water at 80.0 °C? (The specific heat of water is 4.18 J/g K) A) 17.5 °C B) 170. °C C) 37.5 °C D) 42.5 °C E) 50.0 °C 50g4.18)(20-x)304.18 Xy-g0) 2
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter8: Thermochemistry
Section: Chapter Questions
Problem 63QAP: Butane gas, C4H10, is sold to campers as bottled fuel. Its density at 25C and 1.00 atm is 2.38 g/L....
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Can someone explain to me why in the first part of the equation it would be 20-x instead of x-20?
Transcribed Image Text:10) A gas sample contains 4.00 g of CH4 and 2.00 g of He. What is the volume of the sample at STP?
A) 32.0 L
B) 132 L
C) 16.8 L
D) 5.64 L
E) 22.4 L
2.
15
V= ner - Y
U=(.15)1.0820)(213)
Gi)
16.8
11) Assuming no heat loss, what final temperature is expected after 50.0 g of water at 20.0 °C is mixed
with 30.0 g of water at 80.0 °C? (The specific heat of water is 4.18 J/g K)
A) 17.5 °C
B) 170. °C
C) 37.5 °C
D) 42.5 °C
E) 50.0 °C
50g4.18)(20-x)304.18 Xy-g0)
2
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