Join the IDNLearn.com community and get your questions answered by knowledgeable individuals. Our platform provides detailed and accurate responses from experts, helping you navigate any topic with confidence.

8.50g of CuO when heated in a current of dry hydrogen gas gave 6.58g of copper and 2.16g of wate Calculate the proportion of oxygen to hydrogen by mass in water.

Sagot :

The proportion of oxygen to hydrogen by mass in the water is 8 : 1

Data obtained from the question

  • Mass of CuO = 8.50 g
  • Mass of Cu = 6.58 g
  • Mass of water = 2.16g
  • Proportion =?

How to determine the mass of O in water

  • 1 mole of water (H₂O) = (2×1) + 16 = 18 g
  • Mass of O in water = 16 g

18 g of water contains 16 g of O.

Therefore,

2.16 g of water will contain = (2.16 × 16) / 18 = 1.92 g of O

How to determine the mass of H in water

  • Mass of water = 2.16 g
  • Mass of O in water = 1.92 g
  • Mass of H =?

Mass of H = mass of water – mass of O

Mass of H = 2.16 – 1.92

Mass of H = 0.24 g

How to determine the proportion of oxygen to hydrogen

  • Mass of O  = 1.92 g
  • Mass of H = 0.24 g
  • Proportion =?

Proportion = oxygen / hydrogen

Proportion = 1.92 / 0.24

Proportion = 8 : 1

Learn more about mass composition:

https://brainly.com/question/11617445