Chemistry Semester 1 Final

Indicate the number of significant figures in the following value:

100.

• 1

• 2

• 3

• 4

Indicate the number of significant figures in the following value:

2.150 x 10³

• 1

• 2

• 3

• 4

Round the following value to TWO significant figures:

0.00397

• 0.0

• 0.00

• 0.0039

• 0.0040

Round the following value to THREE significant figures:

10.0920

• 10.092

• 10.09

• 10.1

• 10.0

Which of the following correctly express the given value in scientific notation?

0.00034290

• 3.4290 x 10^-4

• 3.4290

• 3.4290 x 10⁴

• 0.34290 x 10^-4

Which of the following correctly express the given value in scientific notation?

6,902,000

• 6.902 x 10^-6

• 6.902

• 6.902 x 10⁶

• 69.02 x 10⁶

Which of the following expresses the given value in standard notation?

2.900 x 10³

• 0.002900

• 0.2900

• 2,900.

• 2,900,000.

Which of the following expresses the given value in standard notation?

8.90 x 10^-3

• 0.00890

• 0.890

• 890

• 8,900

Observe the following mathematical operations. Round the answer to the PROPER NUMBER OF SIG FIGS!

(0.0560 cm) x (0.030 cm) = 0.00168 cm²

• 0.0017 cm²

• 0.002 cm²

• 0.00168 cm²

• 17 cm²

Observe the following mathematical operations. Round the answer to the PROPER NUMBER OF SIG FIGS!

• 4.34 g/mL

• 0.4342 g/mL

• 0.43 g/mL

• 0.434 g/mL