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Vanillin, C8H8O3 (mm= 152 g/mol), is the molecule responsible for the vanilla flavor in food. How many oxygen atoms are present in 45.0 mg sample of vanillin?

Which element has chemical properties most similar to those of P?

When 30.0 ml of 0.10 M AgNO3 is added to 30.0 ml of 0.10 M NaCl, aqueous NaNO3 and solid AgCl are formed. How much solid AgCl is produced?

A 10.00 g sample of a compound containing only carbon, hydrogen, and oxygen forms 23.98 g of CO2 and 4.91 g H2O upon complete combustion. What is the empirical formula of the compound?

Five successive determinations of the density of an alloy gave the following results: 10.29 g/ml 9.95 g/ml 10.06 g/ml 9.89 g/ml 10.18 g/ml What value should be reported for the density of this alloy?

MgCl2 is a strong electrolyte. If 17.16 g of MgCl2 is dissolved in 150.0 mL of solution: Calculate the concentration (molarity) of Mg2+ ion

This experiment can be considered accurate because the percent uncertainty is less than 5%

100. ml of 0.220 M copper(II) chloride is mixed with 100. ml of 0.750 M sodium hydroxide.           CuCl2 + 2NaOH –> Cu(OH)2 (s) + 2NaCl What is the concentration of the negative spectator ion?  

MgCl2 is a strong electrolyte. If 17.16 g of MgCl2 is dissolved in 150.0 mL of solution: Calculate the concentration (molarity) of MgCl2

Isometric perspective, using______ lines but without allowing parallels to converge, was a spatial technique.