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emmainna [20.7K]
3 years ago
11

What mineral is the hardest known substance in nature?

Chemistry
2 answers:
Darya [45]3 years ago
6 0

Answer:

The hardest known substance in nature is diamond.

Explanation:

It is rated a 10 on the Moh's hardness scale and it can only be cut by another diamond!

shusha [124]3 years ago
3 0
The mineral that is the hardest known substance in nature is a diamond. 
Hope this helps. 



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What is a mol in chemistry
Snowcat [4.5K]
Molecular weight it stands for molecular weight






6 0
3 years ago
"how many molecules of carbon dioxide exit your lungs when you exhale 5.00 × 10−2 mol of carbon dioxide, co2?"
IrinaVladis [17]
We are going to use Avogadro's constant to calculate how many molecules of

carbons dioxide exist in lungs:

when 1 mole of CO2 has 6.02 x 10^23 molecules, so how many molecules in

CO2 when the number of moles is 5 x 10^-2

number of molecules = moles of CO2 * Avogadro's number

                                     = 5 x 10^-2  * 6.02 x 10^23

                                     = 3 x 10^22 molecules 

∴ There are 3 x 10^22 molecules in CO2 exist in lungs 
5 0
3 years ago
Read 2 more answers
When you put some food in microwave it gets hot i it conduction,convection or radiation
BARSIC [14]
The answer is Conduction
7 0
3 years ago
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Select the correct answer.
Alex

no:A

is a correct answer

7 0
3 years ago
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I need help what is s-1/3=7/9???? please help guys and thank you
nalin [4]

Answer:

10/9

Explanation:

First, let's convert 1/3 and 7/9 so that the have the same denominator. To do this let's find the least common multiple of 3 and 9.

List the multiples of 3 and 9:

3: 3, 9

9: 9

They have a least common multiple of 9

We need to convert 1/3 so it has a denominator of 9:

1/3*3/3 (we can multiply it by 3/3 because any number over itself is 1) = 3/9

s-3/9=7/9

Add 3/9 to both sides to isolate s

s=10/9

6 0
2 years ago
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