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4 years ago

15

How would a balloon left in a car on a hot day change and why?

1 answer:

UkoKoshka [18]4 years ago

7 0

When it is filled with Helium it will expand and become more dense in the hot car. But when it becomes dense the gas molecules fly around in different directions, they collide with other objects and create pressure which can cause the balloon to pop.

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How does density change as you go deeper in earth

stepladder [879]

Answer:
The density increases.
Explanation:
As you go deeper in depth, pressure increases. Density = mass/volume. The layers beneath us due to pressure get packed to the point of being very dense.

8 0

4 years ago

Carbon burns in the presence of oxygen to give carbon dioxide. Which chemical equation describes this reaction? carbon + oxygen

frutty [35]

C (solid) + O2 (gas) -> C02 (gas)

6 0

4 years ago

Read 2 more answers

What's the bond between two atoms of hydrogen?

monitta

Answer:There is a iin dipole attraction between two hydrogen atom

Explanation:

The same atoms have the ion dipole attraction between them the same atoms repel each other

6 0

3 years ago

Which of the following is the first step in balancing a chemical equation?

WARRIOR [948]

<span>The first step in balancing a chemical equation, would be to find the amount of each element. </span>

7 0

3 years ago

29.0g silver combine completely with 4.30g of sulfur to form a compound. what is the percent composition of this compound?

Deffense [45]

Answer:

Percentage of silver and sulphur in the compound is 87.08% and 12.91% respectively

Explanation:

Given:

Amount of silver = 29.0 g

Amount of sulphur= 4.30 g

To find:

Percent composition of the compound=?

Solution:

$\text { percent of compound }=\frac{\text { amount of element }}{\text { Total Molecule Mass }} \times 100$

Total Molecule mass = amount of silver + amount of sulphur

Total Molecule mass = 29+4.3

Total Molecule mass = 33.3g

Percentage of silver:

$\text { Percentage of silver }=\frac{\text { amount of silver }}{\text { Total Molecule Mass }} \times 100$

=> $\frac{29.0}{33.3}\times100$

=> $0.8708 \times100$

=> 87.08%

Percentage of silver:

$\text { Percentage of silver }=\frac{\text {amount of suplhur}}{\text { Total Molecule Mass }} \times 100$

=> $\frac{4.30}{33.3}\times 100$

=> $0.1291\times 100$

=> 12.91%

3 0

4 years ago