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Readme [11.4K]
3 years ago
7

Do the molecules in a desk have energy?

Chemistry
1 answer:
Harrizon [31]3 years ago
6 0
Everything requires energy to move. If the desk is moving, then it has energy. 
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What volume of a 0.155 M potassium hydroxide solution is required to neutralize 25.7 mL of a 0.388 M hydrobromic acid solution
vekshin1

Answer: Therefore, the volume of a 0.155 M potassium hydroxide solution  is 56.0 ml

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

According to the neutralization law,

n_1M_1V_1=n_2M_2V_2

where,

M_1 = molarity of HBr solution = 0.338 M

V_1 = volume of HBr solution = 25.7 ml

M_2 = molarity of KOH solution = 0.155 M

V_2 = volume of KOH solution = ?

n_1 = valency of HBr = 1

n_2 = valency of KOH = 1

1\times 0.338\times 25.7=1\times 0.155\times V_2

V_2=56.0ml

Therefore, the volume of a 0.155 M potassium hydroxide solution  is 56.0 ml

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3 years ago
What is the formula for tetrabromine decafluoride
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Br_{4}F_{10}

The prefix "Tetra" implies 4 Bromine atoms. The prefix "Deca" implies 10 fluorine atoms.

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The mass of a substance contained in a unit of volume is called
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Density should be your answer. Density is the measure of a mass per unit volume. 
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could be reduced by one-quarter.

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