From,
RAM=element×its relative abudance/total abudance
=((107×13)+(12×109))/25
The answer is=107.96
111.6g of Fe + 156g of Cr + 192g of O = 459.6g of Fe2(CrO4)3
First, we convert the given amount of energy into joules.
1 kJ = 1000 joules
2.2125 kJ = 2,212.5 Joules
Each kilocalorie contains 4,184 Joules
Kilocalories = 2,212.5 / 4,182
Kilocalories = 0.529
1 kilocalorie = 1000 calories
0.529 kilocalories = 529 calories
The answer would be D. The only minerals harder than corundum is diamond.
<span>polar bonds due to high difference . In electronegativity of oxygen and hydrogen.</span>
