Perform the following calculation and answer to the correct number of significant figures:

What is the correct answer to the following expression: (53 + 63) x 0.17051? Carry out the addition operation first.

Calculate the volume of a cube (in cm3) with the dimensions: length = 2.3 cm, width = 0.44 dm, height = 0.29 dm V = l x w x h

Round 0.000680483 to 4 significant figures.

A solid object with a volume of 5.62 mL weighs 108 g. Would this object float or sink in mercury? Explain. (Density of Hg = 13.6 g/mL)

The result of the following calculation has how many significant figures?(0.4333 x 412.1) (33.12 – 31.12)

The density of gold is 19.3 g/mL. What is the volume of a gold nugget that weighs 79.3 g?

Which of the three major subatomic particles has/have a charge of –1?i.  electronii. protoniii. neutron

Round 0.000680483 to 4 significant figures.

Which of the three major subatomic particles has/have a charge of –1?i.  electronii. protoniii. neutron