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belka [17]
3 years ago
8

How many atoms are in 169g of calcium?

Chemistry
1 answer:
uysha [10]3 years ago
5 0
The answer is 6.022• 10^23 atoms

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How many grams of sodium bromide must be dissolved in 400.0 g of water to produce a 0.500 molar solution?
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D. 20.6g

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That means 0.400L of 0.500M solution contains:

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Right answer is:

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8 0
3 years ago
Which sublevels hold valence electrons?
pogonyaev

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The Periodic Table can be divided into s, d, p, and f sublevel blocks. For elements in the s sublevel block, all valence electrons are found in s orbitals. For elements in the p sublevel block, the highest energy valence electrons are found in p orbitals.

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