Chemistry Math

How many significant figures are in 0.0020 mg?

• 1

• 2

• 3

• 4

How many significant figures are there in 6000 kg?

• 1

• 4

• unlimited

• 2

How many significant figures are there in 3.45E8 m?

• 1

• 3

• 11

• unlimited

How many significant figures are there in 200. cm?

• 1

• 2

• 3

• unlimited

What is the correct answer to the calculation (expressed in correct significant figures):

2.34 cm + 9.1 cm =

• 11.44 cm

• 11.4 cm

• 11.5 cm

• none of these

What is the correct answer to the calculation (expressed in correct significant figures):

500 km - 4.475 km

• 495 km

• 496 km

• 495.5 km

• 495.525 km

What is the correct answer to the calculation (expressed in correct significant figures):

9.12 m x 27 m

• 246.24 m²

• 246 m²

• 246.2 m²

• 250 m²

What is the correct answer to the calculation (expressed in correct significant figures):

30 kg / 4.21 L

• 7.13 kg/L

• 7.126 kg/L

• 7.1 kg/L

• 7 kg/L

A set of data are all close to each other, but they are not close to the actual value. This set of data can be described as

• accurate

• precise

• both accurate and precise

• neither accurate nor precise

A set of data are all close to each other, and they are close to the actual value. This set of data can be described as...

• accurate

• precise

• both accurate and precise

• neither accurate nor precise