the mass of sample X is 20.0 g. It was placed in a graduated cylinder and the water level rose from 14mL to 19mL. what is the density of sample X? Pay close attention to significant figures

Fossil fuels are organic compounds that are made from

A650 ml sodium bromine solution has a bromide ion concentration of 0.245 m. what is the mass (g) of sodium bromide in solution? a) 103.b)0.00155.c)16400.d) 16.4.e) 0.159

Which is true concerning the products and reactants of photosynthesis and cellular respiration? a. the products of photosynthesis are sugars and the reactants of cellular respiration are starches. b. the products of photosynthesis are reactants in cellular respiration. c. oxygen is needed for photosynthesis and is given off in cellular respiration.