The decomposition of hydrogen peroxide is first order in H2O2. 2H2O2 (aq)--> 2H2O2(l) + O2(g)
The rate constant for this reaction at 20 degrees centigrade is 1.8x10-5 s-1.
If the concentration of H2O2 is 0.75M determine :
(a) the concentration of H2O2 remaining after 3h and
(b) how long it will take for the H2O2 concentration to drop to 0.10M

Determine the empirical formula of a compound containing 40.6 grams of carbon, 5.1 grams of hydrogen, and 54.2 grams of oxygen. in an experiment, the molar mass of the compound was determined to be 118.084 g/mol. what is the molecular formula of the compound? for both questions, show your work or explain how you determined the formulas by giving specific values used in calculations.

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.

A2.5% (by mass) solution concentration signifies that there is a 2.5 % (by mass) solution concentration signifies that there is blank of solute in every 100 g of solution. of solute in every 100 g of solution