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Musya8 [376]
3 years ago
11

What elements are in h2o

Chemistry
1 answer:
Nadya [2.5K]3 years ago
3 0
Hydrogen and Oxygen. You need two hydrogen atoms and one oxygen atom to make up H2O
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At what height the acceleration due to gravity of the earth become half ?​
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Acceleration due to gravity is reduced to half its value on the earth's surface at an altitude of 2.65×106 m

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Calculate the mass, in grams, of 1.2000 mol Mg₃N₂
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Explanation
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2 years ago
What is the molarity of a KF(aq) solution containing 3.0 mol of KF in 2.00L of solution?
sergeinik [125]

Answer : The molarity of KF in the solution is 1.5 M.

Explanation : Given,

Moles of KF = 3.0 mol

Volume of solution = 2.00 L

Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

\text{Molarity}=\frac{\text{Moles of }KF}{\text{Volume of solution (in L)}}

Now put all the given values in this formula, we get:

\text{Molarity}=\frac{3.0mol}{2.00L}=1.5mole/L=1.5M

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4 0
3 years ago
What is the mass in grams of 4.91 moles of ammonium sulfate?
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1 mole is equal to 1 moles Ammonium Sulfate, or 132.13952 grams
4 0
3 years ago
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Calculate the molarity of 0.850 mol of Na2S in 1.70 L of solution.
Basile [38]

Molarity is simply the ratio of the number of moles of a substance over the total volume of the solution. Assuming that the addition of 0.850 moles does not change the overall volume of 1.70 L, therefore molarity is simply:

 

Molarity = 0.850 moles / 1.70 L = 0.5 moles / L = 0.5 M

5 0
3 years ago
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