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svp [43]
3 years ago
5

What is the tool to determine the relative size of things

Chemistry
1 answer:
weqwewe [10]3 years ago
4 0
That would be a measurer
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Which pair best represents a metallic bond?
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Explanation:

Metallic bonds are found between atoms of metals. Since gold is the only metal given here, it is the solution to the problem.

Metallic bonds join atoms of metals and alloys together.

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How many moles of oxygen are in 52.5 grams of oxygen gas?
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An oxygen gas is a diatomic molecule which means that each molecule is composed of 2 atoms. Its symbol is O2. 

Each oxygen atom has a molar mass of 16 g/mol. The molar mass of oxygen gas is calculated below,
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To determine the number of moles in 52.5 grams of oxygen, divide the given mass by the calculated molar mass.
 
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Thus, there are 1.64 moles of oxygen gas. 
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