Questions:
1. How many Oxygen atoms are in 1.5 moles of CO2?
• You have already calculated the number of Co2molecules

2.How many Oxygen atoms are in 45g of water?
• You have already calculated the number of H20 molecules

3. In 141g of Al2O3:
(moles of Al2O3 already calculated in qu 2)
• How many ions are there altogether?
• How many positive ions are there?
• How many negative ions are there?

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

A100 kmol/h stream that is 97 mole% carbon tetrachloride (ccl4) and 3% carbon disulfide (cs2) is to be recovered from the bottom of a distillation column. the feed to the column is 16 mole% cs2 and 84% ccl4, and 2% of the ccl4 entering the column is contained in the overhead stream leaving the top of the column. calculate the mass and mole fractions of ccl4 in the overhead stream, and determine the molar flow rates of ccl4 and cs2 in the overhead and feed streams. 12. mw_ccla- 153.82; mw_cs2-76.14.