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3 years ago

Which of the following is the best definition of radiation?

Chemistry

2 answers:

faust18 [17]3 years ago

4 0

Answer: D. the movement of energy by waves that travel through space

Explanation:

There are three modes of heat transfer:

1. Conduction: This type of heat transfer happens when there is direct contact between the two object.

2. Convection: his type of heat transfer happens when there is a movement of fluid (liquid or gas) in which convection currents are produced due to the movement of hot fluid upwards and cold fluid downwards. This happens as the density of hot fluid decreases and thus it moves upwards.

3. Radiation: This type of heat transfer happens when there is direct transfer of energy through space.

svp [43]3 years ago

3 0

The answer to your question is D. the movement of energy by waves that travel through space. I really hope this helps!

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If an element has 13 protons, how many electrons are in its outer shell?

stealth61 [152]

There will be three electrons in the outer shell.

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4 years ago

The mass percentage of hydrochloric acid within a solution is 28.00%28.00% . Given that the density of this solution is 1.1411.1

sashaice [31]

Answer:

8.76M

Explanation:

Given that

Mass from the density = 1141g

According to the given situation the computation of molarity of the solution is shown below:-

we will took HCL solution which is 1000mL

HCl = 28% by mass

So,

Mass of HCl in 1-litre solution is

$= \frac{28}{100} \times 1141$

Which gives the result of molar mass HCI is

= 319.48g /mol

Now,

Molarity is

$= \frac{319.48}{36.45}$

Which gives results of molarity is

= 8.76M

8 0

3 years ago

Why do new moons parallel the path of the sun?

alexdok [17]

It turns out the plane in which the moon moves is related to the plane of earth's orbit around the sun.

4 0

3 years ago

How do you figure out how many isotopes an element has?

Helen [10]

by counting the isoto

7 0

3 years ago

Evaluate the exponential expression (−2)6.

Olegator [25]

A general exponential expression is something like:

A^n

This means that we need to multiply the number A by itself n times.

Using that we will get (-2)^6 = 64

With that definition, we can rewrite:

(-2)^6 = (-2)*(-2)*(-2)*(-2)*(-2)*(-2)

So we just need to solve the above expression.

Also, remember the rule of signs:

(-)*(-) = (+)

We will get:

(-2)*(-2)*(-2)*(-2)*(-2)*(-2) = [(-2)*(-2)]*[(-2)*(-2)]*[(-2)*(-2)]

= 4*4*4 = 16*4 = 64

Then we got:

(-2)^6 = 64

If you want to learn more, you can read:

brainly.com/question/17172630

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3 years ago