4 years ago

ANSWER FAST PLZ 25 POINTS!!!!!!!!!!!!!!

Chemistry

1 answer:

Solnce55 [7]4 years ago

4 0

The letter T represents groundwater

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What is the molarity if 24 moles of solute are dissolved into 6 L of solution?

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Answer:4M

Explanation:

Number of moles=24

Volume=6L

Molarity=number of moles ➗ volume

Molarity=24 ➗ 6

Molarity=4M

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A new penny has a mass of 2.49 grams and occupies 0.349 cm cubed. If pure copper has a density of 8.96 g/cm cubed, is the new pe

lys-0071 [83]

Answer: The new penny is not pure copper

Explanation:

Density $\rho$ is defined as a relation between the mass $m$ and the volume $V$ :

$\rho=\frac{m}{V}$

Now, we are told the density of pure copper is:

$\rho_{copper}=8.96 g/cm^{3}$

And we are given the mass and volume of the new penny, with which we can calculate its density:

$\rho_{penny}=\frac{m_{penny}}{V_{penny}}=\frac{2.49 g}{0.349 cm^{3}}$

$\rho_{penny}=7.13 g/cm^{3}$ As we can see the density of this penny is not equal to the density of pure copper, hence the new penny is not pure copper.

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How could you separate the rice and peas

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By pushing backwards a roller skater moves forward. This is an example of Newton's

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newtons law of roller skated duh

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