chemistry question(please try to explain)?

Question

Mn+4HCL--->MnCL2+CL2+2H20
How many (g) of chlorine gas(CL2) will be formed from 380g of hydrochloric acid(HCL)?

Answer 1

...Mn + 4HCl → MnCL2 + Cl2 + 2H2O

...1 mole of a substance can be expressed as any weight unit.
You're looking for grams.

...The moles of HCl on the left = (4 x 1) + (4 x 35.5) = 146

...This can be expressed as 146 grams

...On the right we have Cl2 = 2 x 35.5 = 71 grams

...146 g HCl is giving 71 g of Cl2:
...380 ÷ 146 = 2.603
...71 x 2.603 = 184.8 g of Cl2 is evolved from 380 g HCl

Answer 2

(380/36.5) x (71/4)