Cuántos mL de H2SO4 concentrado, densidad 1.84 g'mL con 98% de H2SO4 en peso, se necesitan para preparar: 1 L de disolución 1 N; b) 1 L
de disolución 15% peso c) 200 ml de disolución 0.500 M?​

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. the values of phosphorous acid are 1.30 6.70 calculate the ph for each of the given points in the titration of 50.0 ml of 1.5 m h3po3(aq) with 1.5 m koh(aq) .

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false

4al + 3o2 → 2al2o3 what does the "3" in front of o2 stand for? a) it indicates that there are 5 oxygen atoms after you add the coefficient and the subscript. b) it indicates that that there are are total of 6 oxygen atoms all bonded together as a single molecule. c) it indicates that there are 3 oxygen molecules chemically bonded to each other in the reaction. d) it indicates that there are 3 separate oxygen molecules in the reaction.