One way to change iron ore, Fe2O3, into metallic iron is to heat it together with hydrogen. Fe2O3 + H2 > Fe + H2O How many moles of iron are made from 25 moles of Fe2O3? How many moles of hydrogen are needed to make 30 moles of Fe?

the answer is   c.) 1575 j.

explanation:

the answers would be

the first one and the second one

there is none because earth is stationary and flat.

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.