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3 years ago

Describe the law of conservation of mass and how it applies to chemical reactions.

Chemistry

1 answer:

Lera25 [3.4K]3 years ago

7 0

Answer:

the law of conservation of mass is whatever goes into a reaction comes out nothing is lost or gianed.

Explanation:

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A lead atom has a mass of 3.14 x 10 to the negative 22nd g.How

frozen [14]

Explanation:

The given data is as follows.

Mass of a lead atom = $3.14 \times 10^{-22}$

Volume = 2.00 $cm^{3}$

Density = 11.3 $g/cm^{3}$

As it is mentioned that 1 cubic centimeter contains 11.3 grams of lead.

So, in 2 cubic centimeter there will be $2 \times 11.3 g = 22.6 g$ of lead atoms.

One lead atom has a mass of $3.14 \times 10^{-22}$ . Therefore, number of atoms present in 22.6 g of lead will be as follows.

$\frac{22.6 g}{3.14 \times 10^{-22}}$

= $7.197 \times 10^{22} atoms$

Thus, we can conclude that there are $7.197 \times 10^{22} atoms$ of lead are present.

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4 years ago

What property did mosely use to organize the periodic table?

zhenek [66]

Answer:

nitrogen i think but not sure

Explanation:

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3 years ago

How do i explain this step by step?

nignag [31]

Answer: hydrogen cleaves from HCl by donating it's only electron to form a radical and chloride ion. Ammonia share it's lone pair of electron with hydrogen to form ammonium ion

Explanation:

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3 years ago

What is a centrifuge used for?

tatiyna

<span>It is used for the separation of fluids, gas or liquid, based on density.

Hope this helps!</span>

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3 years ago

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What does the amount of kinetic energy an object has depend on?

Nastasia [14]

The answer is Velocity and potential energy. Kinetic energy is the total energy of a system or an object in motion and requires movement.

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3 years ago