Chemistry Equation questions

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1. % Ecomony = D/ A X 100, what are the values of D and A

  • Mass of desired product and Mr of product
  • Mr of desired product and Mr of all products
  • Mr of desired product and Mass of product
  • Mass of desired product and Mass of product
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Other questions in this quiz

2. What would be the total relative formula mass of H2O, H=1, O=16?

  • 18g
  • 20g
  • 17g
  • 16g

3. What two values do we need to calculate the rate of reaction?

  • Energy transferred and mass
  • time and quantity of product
  • Volume and mass
  • Energy transferred and volume

4. How dow we calculate the number of Moles?

  • Mr/Mass
  • Mass/ Mr X 100
  • Mr/ Mass X 100
  • Mass/ Mr
  • Mass X Mr

5. % yield = Mass of product mad/ T X 100, what is the value of T in this equation?

  • Moles
  • Amount of desired product
  • Theorectical mass
  • concentration

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