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Gnom [1K]
3 years ago
9

what is a molarity of a solution in 9.8 moles of sodium chloride NaCL is dissolved in water to a final volume 3.2 l

Chemistry
1 answer:
Anika [276]3 years ago
6 0
Answer:
molarity = 3.0625 M

Explanation:
Molarity can be calculated using the following rule:
molarity = number of moles of solute / volume of solution

We are given that:
number of moles of solute = 9.8 moles
volume of solution = 3.2 liters

Substitute with the givens in the above equation to get the molarity as follows:
molarity = 9.8 / 3.2
molarity = 3.0625 M

Hope this helps :)
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A system contains bonds between particles. Which choice describes the microscopic structures of the energy in this system? There
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Answer:

The correct answer is: <em>There must be potential energy in the bonds due to its particles position.</em>

Explanation:

Potential energy is a kind of energy which is stored in an object due to its position or configuration. For example, if there is a ball in the fifth floor of a building, it has a determined potential energy which is converted to kinetic energy when the ball fall down. The same is in the case of the chemical bonds: the particles or atoms have potential energy related to their relative positions in the system. In fact,  chemical energy is considered a form of potential energy (stored in chemical bonds).

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3 years ago
What is the concentration of HNO3 if 9.80×10−2 mol are present in 705 mL of the solution?
nydimaria [60]

Answer:

The answer to your question is 0.13 M

Explanation:

Data

[HNO₃] = ?

moles of HNO₃ = 9.8 x 10⁻²

volume = 705 ml

Process

1.- Convert volume to milliliters

                 1000 ml ------------------ 1 L

                    705 ml ------------------ x

                    x = (705 x 1) / 1000

                    x = 705 / 1000

                    x = 0.75 L

2.- Calculate the molarity

Molarity = moles / volume

Molarity = 9.8 x 10⁻² / 0.75

Molarity = 0.13

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3 years ago
Each of the following models represents particles present before and after a
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Answer:

D

Explanation:

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There should be equal masses of reactants and products on both sides of the reaction equation. This most important condition is only satisfied by option D.

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Which of the following fractions can be used in the conversion of 25 m3 to the unit cm3?
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your answer would be C hope this helps

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