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ArbitrLikvidat [17]
3 years ago
8

Why metals are denser than non - metals ? ...?

Chemistry
1 answer:
Solnce55 [7]3 years ago
6 0
Because their molecules are more tightly packed.                       Massdensity = ----------                     Volume
So more densely packed molecules means more mass per unit volume.  Hence metals are denser than non-metals.
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A sample of water at 100°C is converted to steam after absorbing 820 kJ of heat. How grams of H2O are contained in the sample? A
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Since water is already at 100<span>°C all the energy is used to evaporate it. 
Now we can calculate how many </span>mols of water are evaporated with 820kJ.
N= \frac{820}{41} =20 mol
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</span>The final answer is:
m=20*20.16=403.2g




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