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____ [38]
4 years ago
15

Which kind of reaction does this graph represent?

Chemistry
1 answer:
kolbaska11 [484]4 years ago
4 0

Answer:

THE CORRECT ANSWER IS B

endothermic because /\ Hrxn = 876.8 kJ

Explanation:

I just took the quiz

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Answer:

the reaction is: Na2CO3 + 2HCl ===》 2NaCl + H2O + CO2(g)

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In 200 g of a concentrated solution of 70.4 wt% nitric acid (r = 1.41 g/mL, FW(HNO3) = 63.01 g/mol), how many grams of water are
mars1129 [50]

Answer:

59.2 grams

Explanation:

We are given that 70.4% of the weight of the total 200 g of the concentration is made up of nitric acid, the remaining information is not required to solve the problem. Since water and nitric acid are the only components of the solution, the total weight of water is given by:

W = 200*(1-0.704)\\W=59.2\ g

There are 59.2 grams of water in this solution.

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4 years ago
What is the molar mass of H2O?
Oksi-84 [34.3K]
<span>18.01528 g/mol is the molar mass of H2O</span>
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What’s the full electronic configuration for lead
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Explanation:

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