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Tcecarenko [31]
3 years ago
10

what is the percent by mass concentration of a solution that contains 5.30 grams of salt dissolved in 19.7 g of water​

Chemistry
1 answer:
neonofarm [45]3 years ago
4 0

Answer:

0.212

Explanation:

(5.30g) / (5.30g + 19.7g)

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If the half-life of a sample of a radioactive substance is 30 seconds, how much would be left after 60 seconds? <span>A. one-fourth</span>
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22.1g

Explanation:

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From the balanced equation above,

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