202.0 g of Borax (Na2B4O7) is dissolved in 400. mL of water. The density of water is 1.00 g/mL. Calculate the molarity of the solution (moles of solute/ liters of solution). Round molar masses to whole numbers, use appropriate significant figures, and show your work.

Why is carbon ideal for making different compounds?

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.

Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth