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S_A_V [24]
3 years ago
14

PLS HELP A gas has a volume of 250 mL at 96.5 kPa. What will the pressure of the gas be if the

Chemistry
1 answer:
ella [17]3 years ago
8 0

Answer:

Solve the following problems (assuming constant temperature). Assume all numbers are 3 sig figs. 1. A sample of oxygen gas occupies a volume of 250 mL at 740 torr pressure. ... the gas exert if the volume was decreased to 2.00 liters? ... A 175 mL sample of neon had its pressure changed from 75.0 kPa to 150 kPa.

Explanation:

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If 250.0 g of water at 30.0 °C cool to 5.0 °C, how many kilojoules of energy did the water lose?
Y_Kistochka [10]

Answer:

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Explanation:

Given data:

Mass of water = 250.0 g

Initial temperature = 30.0°C

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Solution:

Formula:

Q = m.c. ΔT

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ΔT = -25°C

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Q = -26125 j

J to kJ

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3 years ago
Radium-221 has a half-life of 30 sec. How long will it take for 96% of a sample to decay?
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A = Ao e^-kt

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Explanation:

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