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JulijaS [17]
3 years ago
6

One of the most difficult solar energy design problems to solve is:

Chemistry
2 answers:
Sonja [21]3 years ago
6 0
I'm not sure but i would say C.storing the heat energy.
Zina [86]3 years ago
6 0
Yes the answer is c. Storing heat energy
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3 years ago
How many moles are in 75.0 grams of nitrogen gas, N2?
Westkost [7]

<u>Given:</u><u>                                                                                                                       </u>

Mass of Nitrogen (N₂) gas = 75 grams

<u>Finding the number of moles of N₂:</u><u>                                                                     </u>

We know that the molar mass of N₂ is 28 grams/mole

Number of moles = Given mass / Molar mass

Number of moles = 75 / 28

Number of moles = 2.68 moles

Hence, there are 2.68 moles in 75 grams of Nitrogen Gas

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