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atroni [7]
3 years ago
9

Scientist use instruments to record the strength of earthquakes

Chemistry
1 answer:
labwork [276]3 years ago
7 0

Answer:

Seismographs

Explanation:

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What is the mass in milligrams of 4.30 moles of sodium? use significant figures?
alexandr1967 [171]
Answer is: mass <span>of 4,30 moles of sodium</span> is 98800 mg.
n(Na) = 4,30 mol.
m(Na) = ?
m(Na) = n(Na) · M(Na).
m(Na) = 4,30 mol · 23 g/mol.
m(Na) = 98,90 g.
m(Na) = 98,90 g · 1000 mg/1g.
m(Na) = 98900 mg.
n - amount of substance.
m - mass of substance.
M - molar mass of substance.
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The correct answer is hotter
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Zigmanuir [339]

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If it has a metal and a nonmetal. Not sure if this helps, but I hope it does :)
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