URGENT PLEASE!!
Quinine is the active ingredient in "tonic water" and is used to treat malaria. A 0.487 gram sample of quinine (molar mass=324 g) is combusted and found to produce 1.321 g CO2, 0.325 g H2O and 0.0421 g of the element nitrogen. Determine the empirical and molecular formulas.

Predict the reactants of this chemical reaction. that is, fill in the left side of the chemical equation. be sure the equation you submit is balanced. (you can edit both sides of the equation to balance it, if you need to.) note: you are writing the molecular, and not the net ionic equation. > cacl2(aq) + h20(l)

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.

What is the mass in grams of 0.94 moles of sodium bicarbonate, nahco3?