Calculating Mass Flashcards
what is the equation for total mass of reactants
total mass of reactants = total mass of products
what does the law of conservation of mass say
atoms cannot be created or destroyed in a chemical reaction
if 2.30g of sodium reacted in excess chlorine and 5.85g of NaCL was produced calculate the mass of chlorine reacted
5.85g - 2.30g = 3.55g of chlorine reacted
When potassium reacts with water to create potassium hydroxide and hydrogen gas, the mass of the products is less than the mass of the reactants. Why?
some hydrogen gas has escaped
give examples of reactions in which mass changes
1) Burning of wood
2) Zinc + hydrochloric acid
3) corrosion of metals
in which reactions does mass decrease
1) Burning of wood
2) zinc + hydrochloric acid
in which reaction does mass increase
1) corrosion of metals
