YOUR TASK: • Setup dimensional analysis to solve t problems. For help, check out this guio Cancel units to prove the setups are correct. Solve the expressions with your calculator and type the numerical answer on the board. Check your answers with the following . . #4 If you have 3.58 x 10²4 molecules of carbon dioxide gas (CO₂), approximately how many moles do you have? GD COUTE Z #3 How many molecules are in 4.0 moles of glucose (C6H₁206)? 4.0 moles of glucose x 6.02x10^23/1 mole of glucose = 2.408*10^24 glucose molecules 3.58x10^24 molecules/1 of carbon dioxide/1 mole of co2/6.02x10^23 molecules = 5.94 moles of CO2 February

This Is the chemical formula for talc (the main Ingredient In talcum powder): Mg,(Si,0,),(OH), An analytical chemist has determined by measurements that there are 0.064 moles of oxygen in a sample of talc. How many moles of hydrogen are In the sample? Round your answer to 2 significant digits. O mol x10

Blank #1) Calculate the mass of 1.98 moles of Li₂SO3 in grams. Report you answer with three sig.figs. Blank #2) Show your conversion factor set-up in the second blank. Use this format: 200 minutes X (1 hour/60 minutes) X (1 day/24 hours) Blank #1 Blank #2 Question 7 (4 points) Listen Blank #1) One tablet of aspirin, C9H8O4, contains 0.0212 moles. How many grams is this? Report your answer with three sig.figs. Blank #2) Show your conversion factor set-up in the second blank. Use this format: 200 minutes X (1 hour/60 minutes) X (1 day/24 hours) Blank # 1 Blank # 2 A A

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