Question

What is the mass 0.25 mole of CO molecules.​

Answer 1

Given : Mole of CO molecules. = 0.25

To Find : Mass of a given mole of CO

Solution :

Molecular mass of CO = Molecular mass of C + Molecular mass of O

                                      = 12g + 16g

                                      = 28g

Now, as we Know from below formulae -

Mole = Given mass \ Molecular Mass

hence,

From Question- Molecular mass = 28g

                           Mole = 0.25

so Given Mass = (0.25 * 28)g

                         = 7g

Hence, mass of 0.25 mole of CO molecules is 7g.

Answer 2

Answer:

The mass of 0.25 moles of CO is found to be 7g

Step-by-step explanation:

We know that one mole of any compound has a mass that is equal to its respective molar mass. Hence we have been asked here to find the mass of 0.25 moles of carbon monoxide gas. First of all, we will find the respective molar mass of CO as below;

The molar mass of C = 12g

The molar mass of O = 16g

Molar mass of CO = 12 g + 16 g = 28g

Therefore in 1 mole CO, we have 28 g of CO.

Hence in 0.25 moles of CO = 28 g × 0.25

= 7 g

Therefore in 0.25 moles of CO gas, we have 7 g of carbon monoxide.