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babunello [35]
4 years ago
11

Which event always involves a chemical change A boiling B melting C conducting D burning

Chemistry
1 answer:
Andrew [12]4 years ago
4 0
The answer is Burning
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If one mole of a substance has a mass of 56.0 g, what is the mass of 11 nanomoles of the substance? Express your answer in nanog
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Answer:

616,0 ng is the right answer.

Explanation:

You should know that 1 mole = 1 .10^9 nanomoles

Get the rule of three.

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(11 x 56) / 1 .10^9 nanomoles = 6.16 x 10^-7 gr

Let's convert

6.16 x 10^-7 gr x 1 .10^9 = 616 ngr

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Substances that are considered acidic are also called alkaline, true or false
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below

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