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serious [3.7K]
3 years ago
5

How hot, in degrees Celsius, would the air inside the balloon have to get in order for the balloon to lift off the ground? Assum

e the molar mass of air is 28.97 g/mol and its density is 1.20 kg/m3.
Chemistry
1 answer:
SVETLANKA909090 [29]3 years ago
3 0

Answer:

The temperature in degress Celsius is 52.25°C

Explanation:

According the equation:

V(\rho _{a}  -\rho _{t})g=mg\\\rho _{a}  -\rho _{t}=\frac{n}{V} =\frac{340}{2950} =0.115kg/m^{3}

\rho _{t}=\rho _{a}  -0.115=1.2-0.115=1.085kg/m^{3}

The temperature is:

T=\frac{P}{\rho _{t} R} =\frac{1.013x10^{5} }{1.085*287.05} =325.25K=52.25°C

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2 years ago
Calculate the number of kilojoules of energy required to convert 50.0 grams of solid DMSO initially at a temperature of 19.0°C t
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20.79 kilojoules

Explanation:

Using Q = m×c×∆T

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Q = Quantity of heat (J)

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m = mass of DMSO

∆T = change in temperature

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