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stiks02 [169]
3 years ago
14

A rectangular piece of metal measures 5.0 cm by 1.20 m by 15.0 mm. What is its volume in cm3? (make sure lengths are in SAME uni

ts first)
Give the final corrected answer in decimal (normal) form only.
Chemistry
1 answer:
vfiekz [6]3 years ago
3 0
15.0 mm = 15/10 = 1.5 cm
1.20 m = 1.2 x 100 = 120 cm

Volume = length x width x height = 120 x 1.5 x 5 = 900 cm3
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Answer:

1.84 L

Explanation:

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W = -P*(V_{2} - V_{1})

Where:

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Since the gas did work, therefore W is negative.

P is the pressure in atm = 1.90 atm.

However, work done is in joules and pressure is in atm. We can use the values of universal gas constant as a convenient conversion unit. R = 8.314 J/(mol*K);  R = 0.0821 (L*atm)/(mol*K)

Therefore, the conversion unit is 0.0821/8.314 = 0.00987 (L*atm)/J

V_{1} is the initial volume = 0.350 L

V_{2} is the final volume = ?

Thus:

(-287 J)*0.00987 (L*atm)/J = -1.9 atm*(V_{2} - 0.350) L

V_{2} = [(287*0.00987)+(1.9*0.350)]/1.9 = (2.833+0.665)/1.9 =1.84 L

7 0
4 years ago
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6 0
3 years ago
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