17) Carbon-14 has a half-life of 5730 years. If a scientist determines that the mass of carbon-14 in a fossil has decreased from 0.100 g to 0.025 g, how old
is the fossil?
age of fossil =

Litmus paper is made from water-soluble dyes which are extracted from lichens. this paper is used as an acid-base indicator. which of these common household substances would turn blue litmus paper red? a) bleach b) lye c) soap d) vinegar

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

What is the chemical formula for dihydrogen monoxide