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Fittoniya [83]
3 years ago
13

At what temperature will water change from a liquid to a solid?

Chemistry
2 answers:
Mumz [18]3 years ago
4 0

Answer:

32 degrees Fahrenheit

Explanation:

Temka [501]3 years ago
4 0

Answer:32°F

0°C

Explanation:This is the temp that water freezes at.

~ItsOniiSama <3

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Answer:

Explanation:

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8 0
3 years ago
Calculate the number of atoms in 2.0g of hydrogen atoms?
Jobisdone [24]
First you calculate how many moles there are in 2.0 grams of hydrogen (H2) atoms.
Hydrogen has a relative atomic mass (RAM) of 1 g/mol, but there are 2 hydrogen atoms: 1 x 2 = 2 g/mol

To work out how many moles there are,
use the formula: n(moles) = mass ÷ molar mass
n(moles) = 2 grams ÷ 2 g/mol = 1 mol

Then use Avogadro's Constant : 6.023 x 10^23
= 1 x 6.023 x 10^23
= 6.023 x 10^23

Final step is to multiply it by the number of atoms, in this case there are 2.
= 6.023 x 10^23 x 2
= 12.046 x 10^23
= 1.205 x 10^24

that ^ should be your final answer

have a great day :)

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3 years ago
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