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irga5000 [103]
3 years ago
10

What happens if you are in a swimming pool and you push a beach ball down with your hands?

Chemistry
1 answer:
Aleksandr-060686 [28]3 years ago
7 0

Answer:

it will float back up because it's not dense enough to go down

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When a metal bonds with another non-metal, what type of bond is formed?
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When a metal bonds with another non-metal an ionic bond is formed
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Which substance is not capable of acting as an arrhenius acid in aqueous solution
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SO3 2- which is sulfite

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3 years ago
The chemical equation below shows the formation of aluminum oxide (Al2O3) from aluminum (Al) and oxygen (O2).
Rufina [12.5K]

Answer:

Mass = 182.4 g

Explanation:

Given data:

Number of moles of Al₂O₃ = 3.80 mol

Mass of oxygen required = ?

Solution:

Chemical equation:

4Al + 3O₂    →       2Al₂O₃

Now we will compare the moles of aluminum oxide and oxygen.

                Al₂O₃           :           O₂

                   2               :            3

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Mass of oxygen:

Mass = number of moles × molar mass

Mass = 5.7 mol × 32 g/mol

Mass = 182.4 g

4 0
2 years ago
What substances make up water?
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If the half-life of a radioisotope is 10,000 years, the amount remaining after 20,000 years is
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Answer:

Considering the half-life of 10,000 years, after 20,000 years we will have a fourth of the remaining amount.

Explanation:

The half-time is the time a radioisotope takes to decay and lose half of its mass. Therefore, we can make the following scheme to know the amount remaining after a period of time:

Time_________________ Amount

t=0_____________________x

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During the first 10,000 years the radioisotope lost half of its mass. After 10,000 years more (which means 2 half-lives), the remaining amount also lost half of its mass. Therefore, after 20,000 years, the we will have a fourth of the initial amount.

6 0
3 years ago
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