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forsale [732]
3 years ago
13

Can you count how many atoms there are in the following compounds?

Chemistry
1 answer:
kondor19780726 [428]3 years ago
7 0

you are given the mass of an element, you use the periodic table to find its molar mass, and multiply the given mass by the reciprocal of the molar mass. This is Mass → Moles . Once you have moles, multiply by Avogadro's number to calculate the number of atoms. This is Moles → Atoms

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Why then is a diamond extremely hard and sparkly and Graphite is soft and gray and dull ?
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What mass of water is needed to raise the temperature by 15 degrees C using 165 Joules of energy
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Mass of the water is 2.63 g.

<u>Explanation:</u>

Mass of the water, m = ? g

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Now Plugin the above values in the equation as,

m = $\frac{165}{4.18\times15}

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So the mass of the water is found as 2.63 g.

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