11) What are the coefficients in front of NO 3 - ( aq ) and Cu( s ) when the fol

Question

11)

What are the coefficients in front of NO3-(aq) and Cu(s) when the following redox equation is balanced in an acidic solution:
___ NO3-(aq) + ___ Cu(s) ___ NO(g) + ___ Cu2+(aq)?

Select one:

A. 3, 6

B. 2, 6

C. 2, 3

D. 3, 4

48)

Given the chemical equation: N2 + 3 H2 2 NH3. On a microscopic level, what do the coefficients mean?

Select one:

A. 1 atom of nitrogen reacts with 3 atoms of hydrogen to give 2 atoms of ammonia.

B. 1 mole of nitrogen reacts with 3 moles of hydrogen to give 2 moles of ammonia.

C. 1 molecule of nitrogen reacts with 3 molecules of hydrogen to give 2 molecules of ammonia.

D. 28 g of nitrogen reacts with 6 grams of hydrogen to give 34 grams of ammonia.

Explanation / Answer

11) The coefficients for the given reaction would be,

C. 2, 3

48) For the chemical equation,

N2 + 3H2 ---> 2NH3

On a microscopic leve; the coefficients depicts,

C. 1 molecule of N2 reacts with 3 molecules of hydrogen to give 2 molecules of ammonia

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