Mole Quiz #1 Retake

5 Questions | Total Attempts: 126

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The Mole Quizzes & Trivia

Please read each question carefully. Make sure you report your answer with the correct number of significant figures and with the correct unit. How to type your response:The way you enter your answers is important. If you need to enter a number like 2. 31 x 1021 type 2. 31x10^21 (no spaces). If a your answer has a unit of grams of carbon,just type grams or g. So, if you put it together 2. 31x10^21 grams


Questions and Answers
  • 1. 
    What is avogadro's number with the correct unit?
  • 2. 
    What is the molar mass of K2SO4 ? Make sure your has the correct number of significant figures and the correct unit.
  • 3. 
    If there are 4.82 x 1025 atoms of nitrogen, how many moles of nitrogen are there? Report youranswer with the correct number of significant figures and the correct units.
  • 4. 
    Find the mass (in grams) of 7.24 moles of CH4. Report your answer using the correct number of significant figures and the correct units.
  • 5. 
    If there are 4.28 grams of water in a cup, how many molecules of water are in that cup? Report your answer using the correct number of significant figures and the correct units.