If 21 mL of gas is subjected to a temperature change from 10.0°C to 120°C and a pressure change from 1.0 atm to 15 atm, the new volume is: (Be sure to use the correct number of significant figures.) 1.9 mL 1.0 mL 0.53 mL 440 mL

Question

Chemistry

Aleah Donovan

11 January, 09:46

If 21 mL of gas is subjected to a temperature change from 10.0°C to 120°C and a pressure change from 1.0 atm to 15 atm, the new volume is: (Be sure to use the correct number of significant figures.) 1.9 mL 1.0 mL 0.53 mL 440 mL

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Answers (1)

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Lara Cole · Answer 1

The new volume is 1.9 ml

calculation

The new volume is calculated using the combined gas equation

that is P1V1/T1 = P2V2/T2 where

P1 = 1.0 atm

V1 = 21 ml

T1 = 10.0 c into kelvin = 10 + 273 = 283 k

P2 = 15 atm

V2=? Ml

T2 = 120 c into kelvin = 120 + 273 = 393 K

make V2 the subject of the formula by multiplying both side by T2/P2

V2=T2P1v1 / P2T1

V2=[ (393 k x 1.0 atm x 21 ml) / (15 atm x 283 K) ] = 1.9 Ml