Chemistry Formulas and Compounds
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Questions and Answers

What is the molecular weight of C2H2 in g/mol?

  • 28.05
  • 26.04 (correct)
  • 24.02
  • 30.07
  • How many grams are found in 4.25 moles of C6H12O6?

  • 966.8
  • 866.4
  • 666.6
  • 766 (correct)
  • What is the process involving a reaction decreasing the number of oxygen bonds and increasing the number of electrons and hydrogen bonds?

  • Reduction (correct)
  • Decomposition
  • Combustion
  • Oxidation
  • Which of the following reactions is an example of a decomposition reaction?

    <p>K2CO3 → K2O + CO2</p> Signup and view all the answers

    What is the molecular weight of O3 in g/mol?

    <p>48.00</p> Signup and view all the answers

    How many moles of hydrogen atoms are contained in 1.50 mol of C6H12O6?

    <p>18.0 moles</p> Signup and view all the answers

    What is the correct formula for the ionic compound formed between Ba and Se?

    <p>BaSe</p> Signup and view all the answers

    What happens to the temperature of the surroundings during an exothermic reaction?

    <p>It increases</p> Signup and view all the answers

    Which of the following compounds is classified as a covalent compound?

    <p>SO2</p> Signup and view all the answers

    What is the number of protons and electrons in a neutral atom of carbon?

    <p>6-Protons, 6-Electrons</p> Signup and view all the answers

    Which substances are written on the left side of a chemical equation?

    <p>Reactants</p> Signup and view all the answers

    What is the correct balancing of the equation _2_CO(g) + _1_O2(g) → _2_CO2(g)?

    <p>2CO(g) + 1O2(g) → 2CO2(g)</p> Signup and view all the answers

    What is the correct name for the binary covalent compound P2O5?

    <p>Diphosphorus pentoxide</p> Signup and view all the answers

    What type of reaction is the melting of ice cubes?

    <p>Endothermic reaction</p> Signup and view all the answers

    What is the correct formula for the ionic compound formed between Ba and I?

    <p>BaI2</p> Signup and view all the answers

    What is the number of moles of oxygen gas required to react with 0.373 moles of nitrogen gas?

    <p>0.187 mol</p> Signup and view all the answers

    What is the number of protons, neutrons, and electrons in an atom of Silicon-28?

    <p>14-Protons, 14-Electrons, 14-Neutrons</p> Signup and view all the answers

    What is the correct definition of reactants?

    <p>Substances that undergo a chemical change</p> Signup and view all the answers

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