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ra1l [238]
2 years ago
15

Your bus is traveling 80 km/hr on a class trip to a museum that is 240 kilometers from your school. How long will it take to get

there?
Chemistry
1 answer:
DochEvi [55]2 years ago
7 0
I believe it’s 3 hours since every hour it’s 80km so 3x80 is 240 so it would be 3 hours.
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How many atoms are in 45.22 moles of strontium​
AleksandrR [38]

Answer:

272.31× 10²³ atom of strontium

Explanation:

Given data:

Number of moles of strontium = 45.22 mol

Number of atoms = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.  The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

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7 0
3 years ago
How many grams are in 8.2 x 1022 molecules of N216?
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Answer:

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N2I6 = 8.2x1022 molecules N2I6 x 1 mole/6.02x1023 molecules = 1.36x10-1 moles = 0.136 moles

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Hope this helps, have a BLESSED AND WONDERFUL DAY!

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7 0
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Scientists decide that in an experiment on fish, all the fish will be fed the same amount of food
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This is a controlled variable
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The reaction of sodium peroxide and water produces sodium hydroxide and oxygen gas. The following balanced chemical equation rep
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Answer:

3.925 mol.

Explanation:

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