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Flura [38]
3 years ago
5

It is important that water is a powerful solvent because ____?

Chemistry
1 answer:
Furkat [3]3 years ago
3 0
A all organisms need water to live. Plants to make water. Water isn’t so limited. Animals aren’t the only things that need water
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Volgvan

Maybe Lead and Oxygen?

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What is the mass, in grams, of 122 atoms of aluminum? Round your answer to proper significant figures.
tangare [24]

Answer:

Mass = 547.02 × 10⁻²³g

Explanation:

Given data:

Number of atoms of Al = 122 atom

Mass in gram = ?

Solution:

Avogadro number:

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

122 atom/6.022 × 10²³ atoms ×  1 mol

20.26× 10⁻²³ mol

Mass in gram:

Mass = number of moles  × molar mass

Mass = 20.26× 10⁻²³ mol  × 27 g/mol

Mass = 547.02 × 10⁻²³g

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2 years ago
A chemical compound that contains the –NH2 functional group is a(n) _____.
kirill115 [55]
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True or False: If you have 2 moles of water and 2 moles of carbon, you have the same number of molecules.
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True.
moles x avagadro number = molecules
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How many ions are there in 0.187 mol of Na+ ions
kondaur [170]
Best Answer
1 mole of a substance contains 6.022x10^23 "units" of that substance.

So 0.187 mol of Na+ is 1.13x10^23 ions (6.022x10^23 x 0.187).
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