C3 - Quantitative Chemistry
Cards (22)
- What is the law of conservation of mass?
- What does the law of conservation of mass imply about chemical equations?
- What is the relative formula mass (M<sub>r</sub>) of a compound?
- In a balanced symbol equation, what does the sum of relative formula masses of reactants equal?
- What might cause a change of mass in a non-enclosed system during a reaction?
- How can we measure uncertainty in a set of measurements?
- What units are chemical amounts measured in?
- What is the symbol for the units of chemical amounts?
- How many atoms, molecules, or ions are there in 1 mole?
- What is the relationship between relative formula mass, number of moles, and mass of a substance?
- What does the equation Mg + 2HCl → MgCl₂ + H₂ show in terms of molar ratios?
- If 88g of carbon dioxide gas are produced, what mass of calcium carbonate was decomposed?
- If 48g of magnesium reacted with hydrochloric acid, what mass of hydrochloric acid reacted?
- What is meant by a "limiting reactant" in a chemical reaction?
- Why does the mass of product formed depend upon the mass of the limiting reactant?
- What mass of aluminium chloride is formed from 2.7g of aluminium and 9.125g of HCl?
- What is meant by the concentration of a solution?
- In what units is the concentration of a solution usually measured?
- What is the concentration of a sodium hydroxide solution formed from 8g in 2 dm² of water?
- What mass of sodium chloride is dissolved in 2 dm² of a 10 g/dm² solution?
- How do you convert volumes in cm³ into dm³?
- How can the concentration of a solution be increased?