3 years ago

How does chemistry affect sports?

1 answer:

4 0

Answer:

Explanation:

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Ganezh [65]

It’s called a rip current.

8 0

3 years ago

9966 [12]

To solve this problem, we must be given first the density of air at 20 degrees Celsius. Looking up online, this is equal to:

density air (20C) = 0.0012041 g/mL

so that the volume is:

volume balloon = 0.57 g / (0.0012041 g/mL)

<span>volume balloon = 473.38 mL</span>

5 0

3 years ago

jarptica [38.1K]

Answer: The mass percent of carbon in acetylene is 92.31 %.

Explanation:

In $C_2H_2$ , there are 2 carbon atoms and 2 hydrogen atoms.

To calculate the mass percent of element in a given compound, we use the formula:

$\text{Mass percent of carbon}=\frac{\text{Mass of carbon}}{\text{Molar mass of acetylene}}\times 100$

Mass of carbon = $2\times 12g/mol=24g$

Mass of acetylene = $2\times 12g/mol+2\times 1g/mol=26g$

Putting values in above equation, we get:-

$\text{Mass percent of carbon}=\frac{24}{26}\times 100=92.31\%$

Hence, the mass percent of carbon in acetylene is 92.31 %.

7 0

3 years ago

IRISSAK [1]

This makes no sense please give us more info

6 0

3 years ago

lana [24]

d. atomic mass unit is your answer.

6 0

4 years ago