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3 years ago

What is the molarity of 2 mol of calcium carbonate, CaCl2, dissolved in 1 L of solution?

Physics

1 answer:

Agata [3.3K]3 years ago

6 0

Answer:

2mol/L

Explanation:

Given parameters:

Number of moles of calcium carbonate = 2mol

Volume of solution = 1L

Unknown:

Molarity = ?

Solution:

The molarity of a solution is the number of moles of solute dissolved or contained in a solution:

Molarity = $\frac{number of moles }{volume }$

Molarity = $\frac{2}{1}$ = 2mol/L

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Answer:

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Explanation:

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When the angle between the force and the displacement is 90 degree, the work done is zero.

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Answer:

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4 years ago

Suppose the moon were held in its orbit not by gravity but by a massless cable attached to the center of the earth. What would b

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Answer:

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Explanation:

The tension in the cable would be then equal to the gravitational force that keeps the Moon in circular orbit around the Earth. So, we just need to calculate the magnitude of this force, which is given by:

$F=G\frac{mM}{r^2}$

where:

$G=6.67\cdot 10^{-11} m^3 kg^{-1} s^{-2}$ is the gravitational constant

$m=7.35\cdot 10^{22} kg$ is the mass of the Moon

$M=5.97\cdot 10^{24} kg$ is the mass of the Earth

$r=3.84\cdot 10^8 m$ is the distance between the Earth and the Moon

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3 years ago

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Answer:

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