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Arturiano [62]
2 years ago
10

Write a balanced chemical equation based on the following description:

Chemistry
1 answer:
goblinko [34]2 years ago
5 0

<u>the balanced chemical equation was shown here :</u>

2 K3PO4 (aq) +  3 NiBr2(aq)      ------------>>   Ni3(PO4)2 (s) +  6 KBr (aq)

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Mass of NaHCO3 sample (g): 1.20 g
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Answer: (22.98977 g Na/mol) + (1.007947 g H/mol) + (12.01078 g C/mol) + ((15.99943 g O/mol) x 3) = 84.0067 g NaHCO3/mol

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(1.20 g NaHCO3) / (84.0067 g NaHCO3/mol) = 0.0143 mol NaHCO3

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Supposing the question is asking about "how many moles" of CO2. And supposing the reaction to be something like:

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11.

n = PV / RT = (1 atm) x (0.250 L) / ((0.0821 L atm/K mol) x (298 K)) = 0.0102 mol CO2

12.

(0.0143 mol - 0.0102 mol) / (0.0143 mol) = 0.287 = 28.7%

Explanation:

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