I need helpp!! This is due tomorrow at 8 am it says to Calculate the density of a solid that has a mass of 32.5 g and displaces 6.7 mL of water.

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.