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Leno4ka [110]
2 years ago
9

What is the name of a number with a fixed value in a specific mathematical context?

Chemistry
2 answers:
Hunter-Best [27]2 years ago
6 0

Answer:

constant

Explanation:

A constant is a number with a fixed value in a specific mathematical context

hjlf2 years ago
6 0

Answer: The answer is  C

Explanation: And  coordinate them with a rectangle or square tiles to provide constant.

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If 156 grams of chromium react with an excess of oxygen, as shown in the balanced chemical equation below, how many grams of chr
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Answer:

=759.95 grams.

Explanation:

The molar mass of chromium is 51.9961 g/mol

Therefore the number of moles of chromium in 156 grams is:

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=3 moles.

From the equation provided, 3 moles of chromium metal produce 2 moles of Chromium oxide.

Therefore 3 moles of chromium produce:

(3×2)/4 moles =1.5 moles of chromium oxide.

I mole of chromium oxide has a mass of 151.99 g

Thus 1.5 moles= 1.5mole ×151.99 g/mol

=759.95 grams.

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