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KATRIN_1 [288]
3 years ago
9

The answer to (3.540)x(0.0065)x(401) should have ____.

Chemistry
1 answer:
miv72 [106K]3 years ago
3 0
B. Two significant figures


Your final answer can only have as many significant figures as the number that has the least amount of significant figures in it, which is (0.0065)
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8 0
3 years ago
A sample of liquid mercury is heated from 20°C to 40°C. Which measurement of the sample will increase during this process? volum
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3 0
3 years ago
Please help!!
Olegator [25]
Molarity =  Moles/Liter

Use the molecular atomic mass of NaCl to convert from grams to moles.
Molecular mass of NaCl is the sum of its atomic masses. Look at the periodic table to find these. Na is 23 g/mol and Cl is 35.5 g/mol ,
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multiply to cancel out grams
76 g NaCl * (1mol / 58.5 g NaCl) = 1.3 mol NaCl

over 1 Liter is just 1.3 M NaCl
Hope this helps!
8 0
3 years ago
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