The correct answer is 28.0 g/mol.
To get the answer, you just multiply the molar mass of nitrogen by two.
Answer:
Explanation:
Hello,
In this case, we use the equation regarding the first law of thermodynamics which is:
In this case, the want to compute the change in thermal energy of the gas which is related with ΔU. In such a way, since the 10 J are being removed, they are set as negative in the aforesaid equation, moreover, the 40 J of work are positive since it is a work done on the system. Hence:
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Balanced equation:
2 moles of Al react with 6 moles of HCl. 2 moles of AlCl₃ and 3 moles of H₂ are produced.
The answer is C.