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damaskus [11]
3 years ago
13

If an atom has 12 protons 12 neutrons, and 12 electrons, what is the charge of the atom?

Chemistry
1 answer:
Evgesh-ka [11]3 years ago
6 0
I think the charge is +2
Hope this helps
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Which tool or tools would you use to measure and compare the mass of a cup of fresh water and a cup of salt water
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Determine the mass in grams of 3.75 x 10^21 atoms of zinc. (the mass of one mole of zinc is 65.39 g)
Nastasia [14]

Answer: The mass in 3.75 \times 10^{21} atoms of zinc is 0.405 g.

Explanation:

Given: Atoms of zinc = 3.75 \times 10^{21}

It is known that 1 mole of every substance contains 6.022 \times 10^{23} atoms. So, the number of moles in given number of atoms is as follows.

Moles = \frac{3.75 \times 10^{21}}{6.022 \times 10^{23}}\\= 0.622 \times 10^{-2}\\= 0.0062 mol

As moles is the mass of a substance divided by its molar mass. So, mass of zinc (molar mass = 65.39 g/mol) is calculated as follows.

Moles = \frac{mass}{molar mass}\\0.0062 mol = \frac{mass}{65.39 g}\\mass = 0.405 g

Thus, we can conclude that the mass in 3.75 \times 10^{21} atoms of zinc is 0.405 g.

6 0
3 years ago
If you leave a glass of water and ice on the kitchen counter long enough, after a while you will have just a glass of water. why
irakobra [83]
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