They're not important when solving math problems in class because you need to get the correct and accurate answers hence don't need to change them into significant figures
The balanced chemical equation is :
Moles of ,
Now, by given chemical equation , we can see 2 mole of react with 1 mole of .
So , 2.27 mole react with :
Mass of oxygen is :
Therefore, mass of oxygen in grams produced is 18.16 g.
Hence, this is the required solution.
The grams of 22.9 % sugar solution that contain 68.5 g of sugar is 299.13 g of solution
<u><em>calculation</em></u>
22.9% means that there are 22.9 g of sugar in 100 g of solution.
what about 68.5 g of sugar
- <em>by cross multiplication</em>
=[(68.5 g sugar x 100 g solution) /22.9 g sugar] =299.13 g of solution
Nb; <em>g sugar cancel each other</em>
Atoms can be divided more so thats not true. atoms from the same element arent all nesacarly identical because of isotopes