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3 years ago

What does the law of conservation say about matter?

1 answer:

6 0

The Law of Conservation says that matter cannot be created or destroyed, all matter is re-used. Going into mass here, which does relate, the product's mass will always equal the mass of the reactants.

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Plz help me with this pt.3

hichkok12 [17]

Answer:

I think the answer is

Our solar system will always be part of the Milky Way.

7 0

3 years ago

The half life of radon-222 is 3.8 days. How Much of a 100g sample is left after 15.2 days

professor190 [17]

Answer:

6.2 g

Explanation:

In a first-order decay, the formula for the amount remaining after n half-lives is

$N = \frac{N_{0}}{2^{n}}$

where

N₀ and N are the initial and final amounts of the substance

1. Calculate the number of half-lives.

If $t_{\frac{1}{2}} = \text{3.8 da}$

$n = \frac{t}{t_{\frac{1}{2}}} = \frac{\text{15.2 da}}{\text{3.8 da}}= \text{4.0}$

2. Calculate the final mass of the substance.

$\text{N} = \frac{\text{100 g}}{2^{4.0}} = \frac{\text{100 g}}{16} = \text{6.2 g}$

4 0

3 years ago

isotopes of an element will always have the same a. number of protons. b. number of neutrons. c. number of electrons. d. mass.

Nastasia [14]

Your answer is same number of protons

3 0

3 years ago

What does mass change to and what does it do

Nataly [62]

Answer:

Mass is the amount of matter in an object and does not change with location.

Explanation:

4 0

3 years ago

A teacher makes the following statement.

melamori03 [73]

The correct answer among the choices given is the first option.The teacher most likely is talking about distillation of a mixture. Distillation is a unit operation that separates component substances from a liquid mixture which is shown by the teacher. Also, the most common purifying technique in the production of gasoline is by this process.

5 0

3 years ago

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