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Olenka [21]
3 years ago
5

Para que sirven los modelos atómicos

Chemistry
1 answer:
kolezko [41]3 years ago
6 0

Answer:

mi no speak espanol

Explanation:

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If a sample contains 21.2g N how many moles of N does it contain
tigry1 [53]

Hey there!

The molar mass of nitrogen is 14.007.

Convert grams to moles:

21.2 ÷ 14.007 = 1.51

The sample containing 21.2g of nitrogen contains 1.51 moles of nitrogen.

Hope this helps!

8 0
3 years ago
Who created the onion model in chemistry?
11111nata11111 [884]
Rick Maurer i think that’s how you spell his last name
8 0
3 years ago
Which arrow would most likely represent the phase change that occurs when silver is poured into a mold and cools to become a sol
sergij07 [2.7K]

Answer:

5

Explanation:

took test edge 2020

4 0
3 years ago
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mixture or pure substance: 1.blood 2.dyes 3.self-raising flour 4.muesli 5.copper wire 6.distilled water 7.table salt 8.milk 9.br
jenyasd209 [6]

Answer: Mixture: Blood , Self raising flour,muesli ,dyes, milk, tea, air, bronze

Pure substance: Copper wire, distilled water, table salt, oxygen.

Explanation:

Mixture is a substance which is made up two or more number of compounds which chemically inactive and retain their distinct chemical properties.

Blood , Self raising flour,muesli ,dyes, milk, tea, air, bronze

Pure substance is defined as anything with uniform and unchanging composition is known s pure substance.

Copper wire, distilled water, table salt, oxygen.

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