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balu736 [363]
3 years ago
7

Kepler proposed the modern model of the solar system.

Chemistry
2 answers:
Pani-rosa [81]3 years ago
5 0
The answer is true that Kepler proposed
zhenek [66]3 years ago
4 0

Question:

Kepler proposed the modern model of the solar system.

Answer:

True

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6 0
3 years ago
2 NH3 + 3 CuO --&gt; 3 Cu + N2 + 3 H2O
Gnom [1K]

<u>Answer:</u> 0.5 moles of N_2 are produced in the reaction

<u>Explanation:</u>

The number of moles is defined as the ratio of the mass of a substance to its molar mass.

The equation used is:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}} ......(1)

Given mass of CuO = 113.6 g

Molar mass of CuO = 79.5 g/mol

Plugging values in equation 1:

\text{Moles of CuO}=\frac{113.6g}{79.5g/mol}=1.43 mol

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So, 1.43 moles of CuO will produce = \frac{1}{3}\times 1.43=0.476=0.5mol of N_2

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5 0
3 years ago
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