1L = 1000 mL Molarity (M) = moles of solute / L of solution

Calculate the moles of NaCl required to prepare 250 mL of 1.5 M aqueous solution.

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Which terms are used to identify pure substances

What type of radiation is lead emitting in the following equation? alpha particles beta particles gamma rays