Think a little more..
you have 1.25e23 atoms, and there are 6.02e23 atom in one mole. dividing the first by the second yields 2.08e-1 mol Mg
How many moles of magnesium is 1.25 x 1023 atoms of magnesium?
A. 0.208 × 101 mol Mg
B. 2.08 × 101 mol Mg
C. 2.08 × 10 -1 mol Mg
D. 20.8 mol Mg
I think it would be D
6 answers
1.25(10^23) divided by 6.02(10^23)
the scientific notations cancel each other out and then we're only left with the numbers 1.25/6.02 which equals 0.208 rounded to the thousandth
0.208 = 2.08(10^-1) because negative notations means moving the decimal point to the left
the scientific notations cancel each other out and then we're only left with the numbers 1.25/6.02 which equals 0.208 rounded to the thousandth
0.208 = 2.08(10^-1) because negative notations means moving the decimal point to the left
2.08
2.08 moles of Mg
I HATE YOU ALL. MS. SUE IS THE ONLY PERSON WHO CAN CORRECTLY ANSWER QUESTIONS.I GOT IT WRONG
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