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stepan [7]
3 years ago
5

The__________of an element is the average mass of all isotopes of that element.

Chemistry
2 answers:
Snowcat [4.5K]3 years ago
8 0
Relative atomic mass
timofeeve [1]3 years ago
3 0
The answer would be Atomic Mass I believe. Hope this helps!
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Imagine that a single cell below goes through four cell divisions. How many cells are produced? To find out, draw the parent cel
Lisa [10]

16 cells are produced from a single parent cell after the fourth division of the cell.

<h3>What is a cell?</h3>

In biology, the smallest unit can live on its own and that makes up all living organisms and the tissues of the body.

In mitosis type of cell division, one parent cell is divided into two same or different daughter cells. In this way, in the first division, two cells are produced from single parent cells and in the second division, four daughter cells are produced. In the third division, 8 cells are produced from 4 parent cells and in the fourth division, 16 cells are formed from 8 cells.

So we can conclude that 16 cells are produced from a single parent cell after the fourth division of the cell.

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2 years ago
Which of the following best describes what happens when hydrogen and oxygen to form water?
Sever21 [200]

Atoms are combining to form molecules

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A student increases the temperature of a 200cm3 balloom from 60 degress C to 180 degrees C. What will the new volume of the ball
kkurt [141]

Answer:

The new volume of the balloon is 600cm³

Explanation:

Given parameters:

Initial Volume, which is V₁ = 200cm³

Initial temperature, T₁ = 60°C

Final temperature T₂ = 180°C

Final Volume V₂ =?

To solve this kind of problem, we apply one of the gas laws that shows the relationship between volume and temperature.

This law is the Charles law, it states that " the volume of a fixed mass of a gas is directly proportional to its absolute temperature if pressure is constant".

It is simply expressed as:

V₁/T₁ = V₂/T₂

Since our unknown is V₂, we make it the subject of the expression given above:

V₂ = V₁T₂/T₁

Now input the corresponding values and solve:

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V₂ = 600cm³

The new volume of the balloon is 600cm³

4 0
4 years ago
A gas occupies 4.31 liters at a pressure of 101.325 kPa. Determine the new volume at 80.8 kPa.
Marat540 [252]

Answer:

v2= 5.404L

Explanation:

using Boyle's law

p1 x v1 = p2 x v2

101.325 x 4.31 = 80.8 x v2

v2= (101.325 x 4.31)\80.8

v2= 5.404L

8 0
3 years ago
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