Chemistry — KCSE 1995Paper 1
📚 Topic: Mole Concept
Question 3📚 Topic: Mole Concept
KCSE 1995 • CHEMISTRY PAPER 1 • QUESTION 3
Stoichiometry: Excess Reactants and Mass Calculations
Topic: Mole ConceptSub-topic: Reacting Masses and Molar Ratios
Question 3
3. Calculate the amount of calcium carbonate that would remain if ( 15.0g ) of calcium carbonate were reacted with ( 0.2 ) moles of hydrochloric acid.
The equation for the reaction is:$$ CaCO\_{3(s)} + 2HCl\_{(aq)} \longrightarrow CaCl\_{2(aq)} + CO\_{2(g)} + H\_2O\_{(l)} $$
(( C = 12.0 ), ( O = 16.0 ), ( Ca = 40.0 ))
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