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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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Which is true about all the different types of matter?
Marat540 [252]
Answer: 1. It is made up of the same basic particles

Matter is made up of atoms, molecules, and ions that cause it to have mass and volume. The different types of matter are made up of the same basic particles but differ on the molecular arrangement and energy the atoms contains that's why they appear differently and have different properties.
8 0
3 years ago
You have 350 mL of 3.4 M hydrochloric acid (HCl). How many grams of HCl gas are dissolved? Bonus: what is the volume of the HCl
Crank

Answer:

1. 43.44g of HCl

2. 26.67 L of HCl

Explanation:

1) Molarity of a solution = number of moles (n) ÷ Volume (V)

According to the provided information in this question,

V = 350 mL = 350/1000 = 0.350L

Molarity = 3.4 M

Using Molarity = n/V

3.4 = n/0.350

n = 3.4 × 0.350

n = 1.19mol

Using the formula below to calculate the mass of HCl;

mole = mass/molar mass

Molar mass of HCl = 1 + 35.5 = 36.5g/mol

mole = mass/MM

mass = 1.19 mol × 36.5g/mol

mass = 43.44g of HCl

2) At STP, HCl has a pressure of 1atm, a temperature of 273K

V = ?

n = 1.19 mol

R = 0.0821 Latm/molK

Using PV = nRT

V = nRT/P

V = 1.19 × 0.0821 × 273/1

Volume = 26.67L

5 0
3 years ago
Which equation represents a neutralization reaction?
bulgar [2K]

Answer: Hello, there! your Answer is Below

The answer is letter C

Explanation:

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Hope this Helps you!!!

Have a great day!!!

4 0
3 years ago
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Answer:

The lowest one cuz its low and the highest is like 100 or sumthin

Explanation:

I used my 5head

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2 years ago
Which substances dissolves in pure water and produces a solution that is a good conductor of electricity?
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CaCl2 is a good conductor of electricity when dissolved in water.
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3 years ago
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