Math of Chemistry

How many significant figures: 2016 m

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How many significant figures: 153.0 mL

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How many significant figures: 0.012 km

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How many significant figures: 1000 mL

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Change from standard form to scientific notation: 12,000,000

• 12.0  x  10⁷
• 0.12  x  10⁷
• 1.2  x  10⁶
• 1.2  x  10⁷

Change from standard form to scientific notation:  0.000398

• 39.8  x  10^-5
• 3.98  x  10^-5
• 3.98  x  10^-4
• 39.8  x  10^-6

Which number is correctly written in scientific notation?

• 5.67 x 10⁵
• 56.7 x 10³
• 0.567 x 10⁶

Solve. Round using SigFig math rules.

103 cm x 11 cm

• 11 cm²

• 1100 cm²

• 1130 cm²

• 1133 cm²

Solve. Round using SigFig math rules.

12.5 mL + 20.05 mL + 2.69 mL

• 35 mL

• 35.2 mL

• 35.24 mL

• 35.240 mL

Round 1047.78 to three sig figs

• 104
• 105
• 1050
• 1050.00