Back to Course Quiz 3.2 – Moles and Elements 0% Complete 0/0 Steps Quiz 1 of 0 Quiz 3.2 – Moles and Elements Stephen August 14, 2024 https://youtu.be/i-pfPCq80BA Time limit: 0 Quiz Summary 0 of 10 Questions completed Questions: Information You have already completed the quiz before. Hence you can not start it again. Quiz is loading… You must sign in or sign up to start the quiz. You must first complete the following: Results Quiz complete. Results are being recorded. Results 0 of 10 Questions answered correctly Your time: Time has elapsed You have reached 0 of 0 point(s), (0) Earned Point(s): 0 of 0, (0) 0 Essay(s) Pending (Possible Point(s): 0) Categories SSS 1 Chemistry 0% Show Question 1 Show Question 2 Show Question 3 Show Question 4 Show Question 5 Show Question 6 Show Question 7 Show Question 8 Show Question 9 Show Question 10 Review Answered Correct Incorrect Question 1 of 10 1. Question What is the number of atoms in 2 mole of an element? \[6.022 \times {10^{23}}\] Correct Incorrect Correct answer \[1.0 \times {10^{22}}\] Correct Incorrect Correct answer \[2.03 \times {10^{23}}\] Correct Incorrect Correct answer \[12.06 \times {10^{23}}\] Correct Incorrect Correct answer Correct Incorrect Question 2 of 10 2. Question The atomic number of an element represents: The number of protons in the nucleus Correct Incorrect Correct answer The number of neutrons in the nucleus Correct Incorrect Correct answer The number of electrons in the nucleus Correct Incorrect Correct answer The number of protons and neutrons in the nucleus Correct Incorrect Correct answer Correct Incorrect Question 3 of 10 3. Question Which of the following elements has the smallest atomic mass? Oxygen Correct Incorrect Correct answer Carbon Correct Incorrect Correct answer Hydrogen Correct Incorrect Correct answer Helium Correct Incorrect Correct answer Correct Incorrect Question 4 of 10 4. Question What is the molar mass of water (H₂O)? 18 g/mol Correct Incorrect Correct answer 34 g/mol Correct Incorrect Correct answer 20 g/mol Correct Incorrect Correct answer 24 g/mol Correct Incorrect Correct answer Correct Incorrect Question 5 of 10 5. Question How many moles of hydrogen atoms are there in 1 mole of methane (CH₄)? 1 mole Correct Incorrect Correct answer 2 moles Correct Incorrect Correct answer 4 moles Correct Incorrect Correct answer 8 moles Correct Incorrect Correct answer Correct Incorrect Question 6 of 10 6. Question Which of the following elements is not a metal? Sodium Correct Incorrect Correct answer Magnesium Correct Incorrect Correct answer Chlorine Correct Incorrect Correct answer Aluminum Correct Incorrect Correct answer Correct Incorrect Question 7 of 10 7. Question The molar mass of sodium chloride (NaCl) is approximately: 23 g/mol Correct Incorrect Correct answer 58.5 g/mol Correct Incorrect Correct answer 44 g/mol Correct Incorrect Correct answer 60 g/mol Correct Incorrect Correct answer Correct Incorrect Question 8 of 10 8. Question How many moles of oxygen atoms are there in the carbon dioxide (CO₂) of the equation of reaction? 5 moles Correct Incorrect Correct answer 7 moles Correct Incorrect Correct answer 10 moles Correct Incorrect Correct answer 20 moles Correct Incorrect Correct answer Correct Incorrect Question 9 of 10 9. Question Which of the following is a diatomic molecule? Neon Correct Incorrect Correct answer Argon Correct Incorrect Correct answer Oxygen Correct Incorrect Correct answer Helium Correct Incorrect Correct answer Correct Incorrect Question 10 of 10 10. Question If you have 1 mole of helium gas (He), what is its mass? 4 grams Correct Incorrect Correct answer 2 grams Correct Incorrect Correct answer 8 grams Correct Incorrect Correct answer 16 grams Correct Incorrect Correct answer Correct Incorrect
