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Alona [7]
3 years ago
5

How do i find the number if electrons in an element​

Chemistry
1 answer:
AveGali [126]3 years ago
5 0

Answer:

by using this formula 2×(n)^२

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Calculate the density of helium if a balloon with a capacity of 5.00 L holds 0.890 g.
liubo4ka [24]

Answer:

Explanation:

Density is m/V. Also, 1 liter = 1000 cm^3. So, we get 0.890/(5*1000) = 1.78*10^{-4} g/cm^3. You can convert this to kg/m^3 as well by multiplying it by 10. Depends which one you want.

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3 years ago
What is the most likely explanation for the difference in average high temperatures in July for these two cities?
Scilla [17]

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3 years ago
What causes the Moon to be illuminated?
alexgriva [62]

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reflection

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8 0
2 years ago
(c) He, Na, Mg (increasing order of melting point).​
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Sodium (Na) = 650°C. or 208°C

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