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LiRa [457]
3 years ago
11

What is not true about radiation? it travels out in all directions from its source. it is one of three methods of heat transfer.

it needs a medium through which to travel. description?
Chemistry
2 answers:
wlad13 [49]3 years ago
8 0

Answer: It needs a medium through which to travel.

<em>- Prodixy</em>

Alika [10]3 years ago
6 0
The answer is the last one (it needs a medium through which to travel) it is not true about radiation. A radiation is the emission of energy in the form of waves or particles through space or through a material medium. This includes; electromagnetic radiation, such as a radio wave, microwaves, visible light, x rays, and gamma radiation. 
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_____ can be defined as the rate at which velocity changes
sergejj [24]

Answer: Acceleration can be defined as the rate at which velocity changes

Acceleration has the units m/s2.

Hope this helps! :D

5 0
3 years ago
Read 2 more answers
In a chemical equation, which symbol should be used to indicate that a substance is in solution?
lisov135 [29]
Example :

2FeCl_3_{(aq)}+2KI_{(aq)}=2FeCl2_{(aq)}+2KCl_{(aq)}+I_2_{(s)}

If you use the subscript (aq) (=aquaris) , this means that the substance is in a solution.

Subscripts:
-aq-this means that the substance is in a solution
-s-this means that the substance is a solid(or precipitate)
-l-this means that the substance is a liquid
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6 0
3 years ago
Read 2 more answers
Please help!
kozerog [31]

Answer:

they are metals so they are:-

-malleable

-ductile

because metallic bonding is the same in all direction throughout the solid

7 0
2 years ago
What is the mass of 4.85 X 10^22 atoms of iron (Fe)?
ludmilkaskok [199]

Answer:

Mass = 4.5 g

Explanation:

Given data:

Number of atoms of iron = 4.85 ×10²² atoms

Mass of iron = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

4.85 × 10²² atoms of iron / 6.022 × 10²³ atoms × 1 mol

0.081 mol

Mass of iron:

Mass = number of moles × molar mass

Mass =  0.081 mol × 55.85 g/mol

Mass = 4.5 g

8 0
3 years ago
If an ice cube is added to a warm drink, what changes about the thermal energy of the molecules in the ice cube and drink ?
Alex Ar [27]

The thermal energy heats up the energy in the ice cube causing it to melt and cool off the drink slightly.

4 0
3 years ago
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