5.If there are 10.0 x 106μL of water in a cylinder, how many 100 mL beakers could you fill? a.1b. 10c. 100d. 1000 6.C6H12O6 is an empirical formula. 7.Match the compound with the types of bonds it contains (not all answers must be used): 1.CaCO3c4. N2O5 a2.SO2a3.Cu2Ob8.In a sample consisting of two (2) molecules of Ca(NO3)2:a)How many atoms are there?
9.79 2-Se34There are 79-34=45 neutrons and 34+2=36 electrons in this ion. Its name is Selenium. 10. From a vial holding 2.00 mL of serum, a 7.05 μL sample is removed. To the correct number of significant figures, what volume (in mL) of serum remains in the vial? 2.00mL-0.00705mL________________1.99295mL1.99 mL11. 10.43 g of hydrogen is reacted with an excess oxygen in order to form water. Determine the mass of water that is created from the reaction.Use: 2H2 + O2 2H2O and use stoichiometry93.04 g H2O12. From the following table of abundances and masses of three naturally occurring argon isotopes, calculate the mass of 40Ar.SymbolMass (amu)Nautural Abundance (%)36Ar35.967550.33738Ar37.962720.06340Ar?99.60Average39.948---(35.96755)(0.00337)+(37.96272)(0.00063)+x(0.9960)=39.948x=39.96272 amu 39.96 amu13. A chloride compound of oxygen has the following composition: 38.8% Cl, 61.2% O.
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- Spring '08
- Becky Mitchell, Stefi Panit