The approximate volume of air containing 10cm³ of oxygen is?

darkypearl

11 years ago

bt d volume of oxygen in air is 21%

isimemen4279

3 years ago

If 21cm3 of oxygen is present in 100cm3 of air
then 10cm3 of oxygen will be present in Xcm3 of air

cross multiply
10cm3x100cm3
21cm3

= 47.61904762cm3
= 50cm3 (1 significant figure)

Paul78

1 year ago

Am akintunde paul
you know the total percentage of air is 100%.
The percentage of oxygen in air is always 21%, so we can just use 20% and they gave us the Volume of oxgen to be 10cm³
percentage of air
———————. X volume of oxygen
percentage of oxygen

100/20 ×10
= 50cm³

Anela

1 year ago

The power of MANIPULATION.
👏👏

Anipasan

3 years ago

can someone please explain this

Idowuayomideolaniyi

1 year ago

@ibile is correct

Cletusclevica

5 years ago

Please can someone explain the solvinhs for me🙏

Fex23

3 years ago

Explanation pls

Som15432

1 year ago

The answer is C. 50 cm3.
Here's why:
* Air is made up of different gases, and oxygen makes up about 20% of the air we breathe.
* To figure out the total volume of air, you can use this simple calculation:
* If 10 cm3 is 20% of the air, then 100% of the air would be 5 times that amount.
* 10cm3 x 5 = 50cm3.
So, approximately 50 cm3 of air contains 10 cm3 of oxygen.