Chemistry Question, dotn know how to work out A and B.

a) 0.133 mol

b) 5.87 g

Explanation:

a)

To find the number of moles, we use the formula , where m is the mass of the given substance in g, and Mᵣ is the relative molecular mass of the substance. Hence,

n of C = = mol = 0.133 mol (3sf)

b)

Molar ratio of C to CO₂ is 1:1. As such, for every 0.133 mol of C used, 0.133 mol of CO₂ is produced. Using the formula ,

m of CO₂ = × (12 + 2(16))

= × 44

= g

= 5.87 g (3sf)

what is the average time it took the car to travel 0.25 meters?

⇒ 2.23 seconds

what is the average time it took the car to travel 0.50 meters?

⇒ 3.13 seconds