Asmall sack of sand has a density of 1.5 g/cm3 and a mass of 1500 g. how much space (volume) does the sand occupy? 750 cm3 2250 cm3 1000 cm3

If a solution had a ph of 7 what is the solution

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves

What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles