Percent composition and Chemical Formulas
Quiz by Olamide Akinnagbe
Grade 9-12
Science
Next Generation Science Standards
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Measures 1 skill fromGrade 9-12ScienceNext Generation Science Standards
Measures 1 skill from
Grade 9-12
Science
Next Generation Science Standards
HS-PS1-7
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10 questions
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- Q1What is the percent composition of the compound formed when 2.70g of Aluminium combines with oxygen to form 5.10g of Aluminium oxide.60% Oxygen and 40 % Aluminium60% Aluminium and 40% oxygen53% Aluminium and 47% Oxygen53% Oxygen and 47% Aluminium30sHS-PS1-7
- Q2Calculate the percent composition when 13.3g Fe combines completely with 5.7g Oxygen70% Fe and 30% Oxygen57% Oxygen and 43% Fe43% Oxygen and 57% Fe30% Fe and 70% Oxygen30sHS-PS1-7
- Q3What is the percentage composition of Fe (Iron) in FeO68%52%22%78%30sHS-PS1-7
- Q4What is the percentage composition of Mg(OH)₂40% Oxygen, 40% Magnesium and 20% Hydrogen50% Magnesium, 40% Oxygen and 10% Hydrogen3.4% Oxygen, 55.2% Magnesium and 41.4% Hydrogen41.4% Magnesium, 55.2% Oxygen and 3.4% Hydrogen30sHS-PS1-7
- Q5Which of the following can be classified as an empirical formulaC₆H₁₀O₄S₂Cl₂Na₂SO₃30sHS-PS1-7
- Q6What is the empirical formula of C₆H₁₂O₆CH₂OC₃H₄O₃C₂H₃O₂CHO30sHS-PS1-7
- Q7What is the Empirical formula of compounds with 42.9% C and 57.1% OCCOC₂OCO₂30sHS-PS1-7
- Q8Determine the empirical formulas of a compound containing 71.72% Chlorine, 16.16 Oxygen and 12.12 CarbonCl₂O₂CClOC₂ClOCClO₂C30sHS-PS1-7
- Q9Determine the molecular formula of a compound with 94.1%Oxygen and 5.9% Hydrogen and a molar mass of 34g/molH₂O₂HO₂HO₂H₂O30sHS-PS1-7
- Q10Determine the molecular formula of a compound containing 50.7% Carbon, 4.2% Hydrogen and 45.1% Oxygen. The molar mass of the compound is 142 g/molCHO₂C₆H₆O₄C₂H₂OC₂H₂O₂30sHS-PS1-7