1. Calculate the percentage economic element in the following ore minerals: % metal
moles metal x atomic weight of metal
sum (moles of each element x atomic weight of each element]
X 100
Molar masses (g/mol): Cu-63.55, Fe- 55.85, S-32.06, C- 12.01, 0- 16.00, H-1.008
a) Bornite- Cu5FeS4
b) Azurite- Cu3(CO3)2(OH)2

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.

the dna of humans and mice is almost 92% similar. this similarity indicates that . mice have a tail, while humans have a tailbone. the tailbone is a structure in humans.yes it's true.