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Galina-37 [17]
3 years ago
10

Which of the following substances is a base? Choose One

Chemistry
1 answer:
topjm [15]3 years ago
8 0

Answer:

Sodium Oxide

Explanation:

Most the others are salts...

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3 years ago
Negatively charged Adam or group of Adams is called a(n)
bija089 [108]

Answer:

Anion

Explanation:

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3 0
3 years ago
Number of grams in 4 mols of cu(no2)2
Drupady [299]
151.55 x 4 you have to add the molar masses for each element together.
6 0
3 years ago
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A sample of hydrated cobalt (II) chloride has a mass of 5.22 g. After heating, it has a mass of 2.85 g. What is the percent by m
Tom [10]
Answer:
mass of water in hydrate = 2.37 grams

Explanation:
The mass of the hydrated cobalt (III) chloride is the summation of the salt and the water it contains.
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Now, we are given that:
total mass of sample = 5.22 grams
mass of salt = mass of sample after heating = 2.85 grams

Substitute to get the mass of water as follows:
5.22 = mass of water in hydrate + 2.85
mass of water in hydrate = 5.22 - 2.85
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Hope this helps :)
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Alexxx [7]
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