Chemistry first term 21

Solve the following problem with the correct number of significant figures? 5.31 cm + 8.4 cm + 7.932 cm

Convert 299,000,000 to scientific notation.

The closeness of an experimental value to an accepted value is its ______

What volume is occupied by 16.4 g of mercury? The density of mercury is 13.6 g/mL.

What is this number expressed in scientific notation? 702.0

Two items that must be worn during any laboratory experiment are ___________.

What is the percent error if a measured value is 24.59 g/mL and the accepted value is 25.49 g/mL?

A unit that is defined by a combination of base units is a(n) ________________.

Research on solubility as a factor that affects the digestion of foods in humans would be an example of ______________.

How many significant figures are in the following number? 20.308

The sum of 4.824 + 2.03 + 4.72319 + 123.4567 + 111.1 expressed to the proper number of significant figures is ____________.

What is this number in standard notation? 2.70 x 10^-4

Research that is conducted for the sake of increasing fundamental knowledge is __________.

Perform the indicated mathematical operations and report the answer to the proper number of significant figures. (21.55 x 4.12 ) / 42.42

What is the percent error if a measured value is 24.59 g/mL and the accepted value is 25.49 g/mL?

What is the area in square millimeters of a rectangle that is 7.431 cm long and 23.33 mm wide?

What is the SI unit for temperature?

Is the length a qualitative measurement of a pencil?