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exis [7]
2 years ago
12

PLEASE

Chemistry
1 answer:
sesenic [268]2 years ago
7 0

Answer:

How many grams of H2 can be produced from the reaction of 11.5 grams of sodium with an excess of water? Hint: 2Na + 2H2O ---> 2NaOH + H2. Ans: 0.505g .

Explanation:

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Answer:

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Convert 0.02 g/mL to the unit g/L.
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3 years ago
Need help calculating atomic mass (see pohoto for more info)
polet [3.4K]

Answer:

28.1

Explanation:

Divide the percentage abundances by 100:

92.2% ÷ 100 = 0.922

4.7% ÷ 100 = 0.047

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multiply them by their corresponding mass number:

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add them all together to get your final answer:

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to one decimal place:

28.1

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