Ideal Gas Law & Reaction Stoichiometry Problem

I don't know how to determine how many grams of potassium chlorate decompose to form potassium chloride and 590 mL of O2 at 128 C, 729 torr.

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Example of Lab Report: Decomposition of Potassium Chlorate - Calculate and record the following for the experiment performed with 10.000 g KClO3 1. (a) mass of the crucible with manganese(IV) dioxide (in grams) = 53.300g (b) mass of the crucible after potas ...
potassium chlorate decomposition: - When heated, potassium chlorate decomposes by the reaction: 2KClO3 --> 2KCl + 3O2 How many liters of O2 gas result when 75.0 grams of KClO3 react at 30.0 degree Celsius and 1.10 atm?
Law of Definite Proportions - 1. Calculate and record the following for the experiment performed with 20g KClO3: (a) mass of the crucible with manganese(IV) dioxide (in grams): 53.300g (b) mass of the crucible afte ...
calculation using gas law - Given 20g potassium chlorate, how many cubic decimeters of oxygen would be produced at STP 2 KCLO3----> 2 KCL(cr) + 3O2(g)
In the reaction barium chloride plus potassium chromate yields potassium chloride and barium chromate - In the reaction barium chloride plus potassium chromate yields potassium chloride and barium chromate, 10.0 milligrams of barium chloride is mixed with 1.00 grams of water to make a barium chloride so ...