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melomori [17]
3 years ago
14

How long will it take the cyclist to travel 400 meter?

Chemistry
1 answer:
yuradex [85]3 years ago
7 0
It depends on the mph

Please mark me as brainliest. I need brainliest to get to Ace (rank).
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If you wanted to look at a cell wall.Which type of cell wall would you observe?
nirvana33 [79]

If you are trying to observe a cell wall, you should look at a plant cell. There are only two different types of cells, which are plant and animal cells. The plant cell is the only one which contains a cell wall. Animal cells actually only have a <em>cell membrane. </em>

3 0
3 years ago
By weight atmospheric air is approximately 23.15% oxygen and 76.85% nitrogen. What is the partial pressure of oxygen in the air
inna [77]

Answer:

Partial pressure of oxygen = 23.38 kpa (Approx)

Explanation:

Given:

Amount of oxygen = 23.15%

Amount of nitrogen = 76.85%

Pressure (missing) = 101 kpa

Find:

Partial pressure of oxygen

Computation:

Partial pressure of oxygen = [Amount of oxygen x Pressure]/100

Partial pressure of oxygen = [23.15% x 101]/100

Partial pressure of oxygen = 23.38 kpa (Approx)

5 0
3 years ago
Naturally occurring copper exists in two isotopic forms: 63Cu and 65Cu. The atomic mass of copper is 63.55 amu. What is the appr
Mariulka [41]
To calculate the average atomic weight, each exact atomic weight is multiplied by its percent abundance, then, add the results together.  If the natural abundance of 63Cu is assigned x, the natural abundance of 65Cu is 1-x (the two abundance always add up to 1). So the solution is: (63)(x)+(65)(1-x) = 63.55, 63x+65-65x=63.55, x=0.725=72.5%. The natural abundance of 63Cu is 72.5%, that of 65Cu is 1-72.5%=27.5%.
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3 years ago
¿Por qué el volcán causa una explosión?
never [62]
Why does the volcano cause an explosion?
4 0
3 years ago
What is the formula for number of moles?​
kicyunya [14]

Answer:

number of moles=volume/molar volume or mass/molar mass

8 0
3 years ago
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