Stoichiometric Calculations (Grade 10 NSC Matric Physical Sciences): Quizzes

📚Quizzes
Stoichiometric Calculations
Sign up to keep practising.Create a free account to play more quizzes and track your progress.

Practise the questions

10 questions from this quiz

Show

What does stoichiometry calculate in chemical reactions?

Quantities of reactants & products

Why are moles described as a 'bridge' in stoichiometric calculations?

They connect different measurements

What do balanced chemical equations provide directly?

Mole ratios

What is the first step in the universal stoichiometry method?

Write the balanced chemical equation

For C3H8+5O2→3CO2+4H2O\text{C}_3\text{H}_8 + 5\text{O}_2 \rightarrow 3\text{CO}_2 + 4\text{H}_2\text{O}, what O2\text{O}_2 volume burns 2 dm³ propane?

10 dm³

Which formula calculates moles from mass?

n=mMn = \frac{m}{M}

Why is actual yield usually less than theoretical yield?

Incomplete reaction & product loss

What is the formula for percentage yield?

actualtheoretical×100\frac{\text{actual}}{\text{theoretical}} \times 100

What does a percentage yield over 100% indicate?

Calculation errors or impurities

For BaCl2+H2SO4→BaSO4+2HCl\text{BaCl}_2 + \text{H}_2\text{SO}_4 \rightarrow \text{BaSO}_4 + 2\text{HCl}, how many mol HCl from 0.01 mol BaCl2\text{BaCl}_2?

0.02 mol

Join 100,000+ NSC Matric students studying Quizzes with us.

Select your subjects, and get access to A+ resources today.