Answer:
The answer is "
".
Explanation:
calculating the moles in
Eqution:

Calculating the amount of
produced:

So, the amount of dihydrogen produced = 
As we know that Molarity is given as,
M = moles / V
Solving for V,
V = moles / M ------------------(1)
Also, moles is equal to,
moles = mass / M. mass -------------(2)
puting value of moles from eq. 2 into eq. 1,
V = (mass / M.mass) / M
Putting values,
V = (45 g / 164 g/mol) / 1.3 mol/dm³
V = 0.21 dm³
Answer: Fe2O3
Explanation: By applying crisscross method, the formula will be Fe2O3.
In a carbohydrate, the ratio of hydrogen atoms to carbon atoms to oxygen atoms is:4:6:1