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cricket20 [7]
2 years ago
13

Li = # of atom O= # of atom

Chemistry
1 answer:
defon2 years ago
5 0

answer:

O= 2 atoms

Li= 3 atoms

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The table shows a chemical equation and the dimensional analysis used by a student to calculate the number of moles of Ba3N2 req
UNO [17]

This problem is providing the chemical reaction whereby barium nitride reacts with water to produce barium hydroxide and ammonia, so the number of moles of barium nitride are required in order to produce 8.3 moles of ammonia. It asks for us to evaluate the student's setup, so we conclude the answer is C. "1 mol of NH3 should be replaced with 2 mol of NH3", according to:

<h3>Mole ratios:</h3>

In chemistry, stoichiometric calculations are used to figure out the moles or mass of a substance, given information about another one in the reaction. In this case, for the given chemical equation:

Ba_3N_2 + 6H_2O \rightarrow 3Ba(OH)_2 + 2NH_3

We evidence a 1:2 mole ratio of barium nitride to ammonia, for that reason, the student's setup:

8.3 mol NH_3 * \frac{1 mol Ba_3N_2 }{1 mol NH_3}

Is incorrect, because the ammonia must be accompanied by a 2 rather than the 1 it is given there:

8.3 mol NH_3 * \frac{1 mol Ba_3N_2 }{2mol NH_3}

Thereby, the correct answer is C. "1 mol of NH3 should be replaced with 2 mol of NH3"

Learn more about mole ratios: brainly.com/question/15288923

5 0
2 years ago
Hello people ~
pochemuha

Answer:

C

H²O is dissociated in water into H³O+ (hydronium ions) and OH- (hydroxide) given by;

2H²O <-----> H³O+ + OH-

If you notice initially we have 4 hydrogen atoms and 2 oxygen atoms. And similarly after the reaction we have 4 hydrogen atoms and 2 oxygen atoms.

Ratio of H to O is 4:2

or 2:1

This is very intuitive as we have 2 hydrogen atoms and 1 oxygen atom in a water molecule.

8 0
2 years ago
Read 2 more answers
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