Someone helppp please

Explanation:

1. Balanced chemical equation (given)

2. Mole ratios

They are given by the coefficients of the balanced chemical equation:

It means that 4 mol of iron can be obtained from 2 moles of iron oxide. Thus, the conversion factor to go from iron oxide to iron is:

3. Convert 640 tonnes of iron oxide to moles

The symbol for metric tonnes is MT.

Mass of iron oxide: 640 MT × 1,000 kg/MT × 1,000 g/kg = 640,000,000g

4. Convert 4,000,000 of moles of iron oxide to moles of iron

5. Convert 8,000,000 of moles of Fe to mass

You just must multiply by the atomic mass of Fe.

i wish i could but this one is weird give me abc and i can solve it.

nuclear fission produces elements that are heavier than helium.

the elements that are used in nuclear fission and their products are much heavier than helium.