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lilavasa [31]
3 years ago
10

What are negative charged particles orbiting the nucleus called?

Chemistry
1 answer:
Helga [31]3 years ago
4 0

Answer:

Neutrons!

Explanation:

Protons are the positively charged particles while neutrons are negatively charged.

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What mass of Ca(NO3)2 is equal to 0.75 moles of this substance?
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5 0
2 years ago
A solution is prepared by dissolving 23.7 g of cacl2 in 375 g of water. the density of the resulting solution is 1.05 g/ml. the
alekssr [168]
<span>The density of the solution =1.05 g/ml.
</span><span>The total mass of the resulting solution is = 398.7 g (CaCl2 + water)
</span>
Find moles of CaCl2 and water.
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Moles of CaCl2 = 23.7 / 110  = 0.22
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Moles of water = 375 / 18 = 20.83

Now, Mole fraction of CaCl2 =  (moles of CaCl2) / (total moles)

total moles = moles of Cl- ions + moles of Ca2+ ions + moles of water

                  = 0.44 + 0.22 + 20.83

=21.49


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Guess what !!! density is not used. No need

4 0
3 years ago
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