Practice: Empirical and Molecular Formula For a
Description: Practice: Empirical and Molecular Formula For a group of 2 or 3 Collect pens and a whiteboard! Prepare yourself! Q1 EASY A compound contains 65.66 carbon, 15.19 hydrogen by mass and the rest nitrogen. Calculate the compounds empirical
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slide1. Practice: Empirical and Molecular Formula For a group of 2 or 3
Collect pens and a whiteboard!
Prepare yourself!<br>
slide2. Q1 EASY A compound contains 65.66 % carbon, 15.19 % hydrogen by mass and the rest nitrogen. Calculate the compound's empirical formula.<br>
slide3. Q2 MODERATE A small sample of antifreeze contains 4.51g C, 1.13 g H, and 6.01g O. The molar mass is 62.0 g/mol. Determine the empirical formula and the molecular formula.<br>
slide4. Q3 MODERATE/HARD A compound is 81.7% carbon and 18.3% hydrogen.
What is its empirical formula?
The formula weight of this compound is 352.9 g/mol. What is the molecular formula?<br>
slide5. Q4 HARD Hemoglobin is the oxygen carrying compound found in human blood. It is found to contain 0.3335% iron by mass. It is already known that one molecule of hemoglobin contains four atoms of iron. What is the molecular mass of hemoglobin?<br>
slide6. Q5 HARDEST! Calculate the molar mass of a metal that forms an oxide having the empirical formula M2O3 and contains 68.04% of the metal by mass. Identify the metal.<br>
slide7. Chemistry 11 – Class Starter Hebden: p. 95 Q’s 52,54,55 (Challenge Questions)<br>
slide8. Finished…? Hand the completed quiz at the front of the room
Collect the Lab: Dehydration of a Hydrate
Read the introduction, and use the handout to create your Pre-Lab which is due at the BEGINNING of next class<br>
Collect pens and a whiteboard!
Prepare yourself!<br>
slide2. Q1 EASY A compound contains 65.66 % carbon, 15.19 % hydrogen by mass and the rest nitrogen. Calculate the compound's empirical formula.<br>
slide3. Q2 MODERATE A small sample of antifreeze contains 4.51g C, 1.13 g H, and 6.01g O. The molar mass is 62.0 g/mol. Determine the empirical formula and the molecular formula.<br>
slide4. Q3 MODERATE/HARD A compound is 81.7% carbon and 18.3% hydrogen.
What is its empirical formula?
The formula weight of this compound is 352.9 g/mol. What is the molecular formula?<br>
slide5. Q4 HARD Hemoglobin is the oxygen carrying compound found in human blood. It is found to contain 0.3335% iron by mass. It is already known that one molecule of hemoglobin contains four atoms of iron. What is the molecular mass of hemoglobin?<br>
slide6. Q5 HARDEST! Calculate the molar mass of a metal that forms an oxide having the empirical formula M2O3 and contains 68.04% of the metal by mass. Identify the metal.<br>
slide7. Chemistry 11 – Class Starter Hebden: p. 95 Q’s 52,54,55 (Challenge Questions)<br>
slide8. Finished…? Hand the completed quiz at the front of the room
Collect the Lab: Dehydration of a Hydrate
Read the introduction, and use the handout to create your Pre-Lab which is due at the BEGINNING of next class<br>