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kirill115 [55]
3 years ago
5

Susan conducts an experiment five times and gets a solution concentration of 1.9M, 2.1M, 1.8M, 1.9M, and 2.2M. The known concent

ration of the solution is 2.0M. Which of the following are true about Susan's results?
A. They are both accurate and precise

B. They are precise but not accurate

C. They are accurate but not precise

D. They are neither accurate nor precise
Chemistry
1 answer:
4vir4ik [10]3 years ago
5 0
D they are accurate but not preci
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Calculate the number of moles of magnesium, chlorine, and oxygen atoms in 7.80 moles of magnesium perchlorate, Mg(ClO4)2.
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 The number of moles of moles of  Magnesium,chlorine and oxygen atoms in 7.80 moles of Mg(ClO4)2 is calculated as below

find the total number of each atom in Mg(ClO4)2

that is mg = 1 atom
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        O  = 4  x2 = 8 atoms

then multiply 7.80 moles with total number of each atom , to get the number moles of each atom
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3 years ago
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pantera1 [17]

Answer:

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