How many moles are there in 3.3 grams of nh4so2

Idon’t know how to solve this question

What is the relation between concentration of reactants and the rate of chemical reaction?

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.