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igomit [66]
3 years ago
13

A round, three dimensional object is a?

Chemistry
1 answer:
Dafna1 [17]3 years ago
6 0

Answer:

Sphere

Explanation:

No explanation

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cluponka [151]

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At STP , how many molecules of nitrogen gas are in 2.24 L?
Oksanka [162]

Explanation:

At STP ,2.24 L contain 0.1 mole of N²

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Calculate the mass in 4.05*10^22 molecules of calcium phosphate
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Answer:

m = 20.9 g.

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to solve this problem by recalling both the Avogadro's number for the calculation of the moles in the given molecules of calcium phosphate and the molar mass of this compound in order to secondly calculate the mass as shown on the following setup:

m=4.05x10^{22}molecules*\frac{1mol}{6.022x10^{23}}*\frac{310.18g}{1mol}\\\\m=20.9g

Regards!

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What does adhesion mean
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