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Sedbober [7]
3 years ago
14

Explain in your own words what the law of conservation of mass means

Chemistry
1 answer:
BigorU [14]3 years ago
5 0

Answer:

Mass can neither be created nor destroyed in a chemical equation, it  transfer from one to another form.

Explanation:

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

Explanation:

This law was given by French chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

For example:

In given photosynthesis reaction:

6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂

there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass.

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The radioactivity due to carbon-14 measured in a piece of a wood from an ancient site was found to produce 20 counts per minute
ss7ja [257]

Answer:

The answer is "17200 years".

Explanation:

Given:

A = 20 \ \frac{counts}{minute}\\\\A_{o} = 160\ \frac{counts}{minute}

Let the half-life of carbon-14, is beta emitter, is T = 5730\ years

Constant decay \ w = \frac{0.693}{ T}

= 1.209 \times 10^{-4} \ \frac{1}{year}\\

The artifact age t= ?

A = A_{o} e^{-wt} \\\\e^{-wt} = \frac{A}{A_{o}}\\\\-wt = \ln \frac{A}{A_{o}}\\\\= -2.079\\\\t = 1.7199 \times 10^{4} \ years\\\\\sim \ 17200\  years\\

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3 years ago
Where is earwax located and produced in your ear? Why is it important
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The earwax is located in the ear canal. Earwax is important because it moisturizes the skin of ear, preventing dry itchy ears. It also contaisn special chemicals that fight of ear infections.
~Deceptiøn
6 0
3 years ago
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The amount of space an object occupies is called its
ahrayia [7]
Volume is the amount of space occupied in a object
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3 years ago
What is the molarity of a solution that contains 2.634 mol KCI in 25.2 L solution?O a. 0.105O b. 0.00141O c. 7.73O d. 105
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Explanation:

To solve this question, we need to use the following formula:

M = n/V

So:

M = ??

n = 2.634 mol

V = 25.2 L

M = 2.634/25.2

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Answer: a. 0.105

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4. Some characteristic types of wind result where global pressure belts meet. Which of the following is a zone of weak, variable
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Answer:

local winds

Explanation:

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