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Eva8 [605]
3 years ago
10

Help quick!!!!!!

Chemistry
1 answer:
Tamiku [17]3 years ago
3 0

The law of conservation of energy states that energy cannot be created or destroyed but can be converted or transferred. So when you're eating a burger which has chemical energy, it is transferred to mechanical energy if you go out and ride a bicycle. Another example is when the Sun which is thermal energy shines on the apple tree, it is converted to chemical energy because the apple has chemical energy. Transferred is pretty similar.

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steposvetlana [31]

Answer:

Mass of water is 18.01528 g/mol. I hope this helps

Explanation:

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3 years ago
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Neon is compressed from 100 kPa and 16°C to 500 kPa in an isothermal compressor. Determine the change in the specific volume and
Viktor [21]

Answer:

\Delta v=-0.952m^3/kg

\Delta h=0

Explanation:

In this case, since neon could be considered as an ideal gas, the specific volumes at the first and second state are respectively:

v_1=\frac{Rg*T_1}{p_1}=\frac{0.4119kJ/kg*K*289.15}{100kPa} =1.19m^3/kg\\

v_2=\frac{Rg*T_2}{p_2}=\frac{0.4119kJ/kg*K*289.15}{500kPa} =0.238m^3/kg\\

Thus, the change in the specific volume turns out:

\Delta v=v_2-v_1=0.238m^3/kg-1.19m^3/kg\\\Delta v=-0.952m^3/kg

Which value has sense for the compression.

In addition, the specific enthalpy change just depend on the temperature as it is an ideal gas, therefore, since the process es isothermic:

\Delta h=Cp\Delta T=0

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4 years ago
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olya-2409 [2.1K]

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