Suggest twe reasons why the mass deposited was different from the expected value

What is the percentage composition of carbon in the compound ch4

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. p k a1 p k a2 1.30 6.70 calculate the ph for each of the points in the titration of 50.0 ml of 1.5 m h3po3(aq) 1.5 m h 3 po 3 ( aq ) with 1.5 m koh(aq). 1.5 m koh ( aq ) .