Solve and show work. How many grams of Pb(CO3)2 are needed to completely react with 500 mL of 0.5 M HNO3 solution. Pb(CO3)2 + 4 HNO3 --> Pb(NO3)4 + 2 H2O + 2 CO2

6what is the importance of water on earth? a) it keeps the top layer of the geosphere cool b) it allows life to exist c) it provides ice at the poles d) it creates earth's blue color from space

Consider the reaction of a(g) + b(g) + c(g) => d(g) for which the following data were obtained: experiment initial [a], mol/l initial [b], mol/l initial [c], mol/l initial rate, mol/l.s 1 0.0500 0.0500 0.0100 6.25 x 10^-3 2 0.100 0.0500 0.0100 2.50 x 10^-2 3 0.100 0.100 0.0100 1.00 x 10^-1 4 0.0500 0.0500 0.0200 6.25 x 10^-3 what is the rate law for the reaction?

Which of the following represents the ester functional group? a. -coo- b. -cho c. -cooh d. c=o