Answer:
if im right i do my caculation that it is B
An organism which has two different alleles of the gene is called Heterozygous.
Vocabulary. Balanced chemical equation: A chemical equation in which the number of each type of atom is equal on the two sides of the equation.
Hope I helped! (´▽`)
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単語。平衡化学反応式:各タイプの原子の数が方程式の両側で等しい化学反応式。
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Answer: 50. 4g
Explanation:
First calculate number of moles of aluminium in 38.8g
Moles = 38.8g/ 26.982mol/g
= 1.44mol
By looking at the balance equation you can see that 4 moles of aluminium produce 2 moles of aluminium oxide.
4 = 2
1.4 = x
Find the value of x
x= (1.4×2)/4= 0.72 mol
0.72 moles of aluminium oxide are produced from 38.8g of aluminium
Now find the mass of aluminium produced.
Mass = moles × molar mass
= 0.72mol × 69.93 mol/g
= 50.4g
For question 16, the answer is B.. the atomic number is 17 and the mass is 35, when you subtract 17 from 35 you get 18 which is the number of neutrons.
for question 17, the atomic mass is protons+neutrons (in this case 8+6=14) the correct answer is C
I hope that helped