Please help
Which statement is true about the reaction shown by this chemical equation?

If 0.414 g of hydrogen is obtained in this experiment how many grams of sulfur must be obtained

How many grams of n2h4 will be consumed by 23 g of n2o4

When the ionic compound nabr dissolves in water, br– ions are pulled into solution by the attraction between what two particles? a. the na+ and br– ions b. the na+ ion and the negative end of a water molecule c. the br– ion and the positive end of a water molecule d. the br– ion and the negative end of a water molecule