2 years ago

Pls help me with this question

Chemistry

1 answer:

Drupady [299]2 years ago

4 0

The answer is c hopefully I helped you

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Explain how a light can be seen when sent through a colloid mixture, but not a solution.

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The heat required to change 1 gram of a solid at its normal melting point to a liquid at the same temperature is called the heat

Darya [45]

Answer:

Heat of fusion

Explanation:

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Where

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What is the percent by mass of nahco3 in a solution containing 10 g of nahco3 dissolved in 400 ml of h2o?

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d(H₂O) = 1 g/ml.
m(H₂O) = V(H₂O) · d(H₂O).
m(H₂O) = 400 ml · 1 g/ml.
m(H₂O) = 400 g.
m(solution) = m(H₂O) + m(NaHCO₃).
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ω(NaHCO₃) = 10 g ÷ 410 g · 100%.
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