Three compounds contain the elements sulfur, S, and fluorine, F. How do the following example data support the law of multiple proportions?’ Compound A: 1.188 g F for every 1.000 g S
Compound B: 2.375 g F for every 1.000 g S
Compound C: 3.563 g F for every 1.000 g S

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) .

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j