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F the volume of ocean water (calculated above) contains 3.3 percent sodium chloride ("salt") by mass and the density of the water is 1.76 g/mL, calculate the total mass of sodium chloride. (1 ton = 2000 lb, 1 lb = 453.6 g)
Draw and name the product for the following reaction between an alkyne, 3-methyl-1-butyne
A 643 mL gas sample at STP is compressed to a volume of 285 mL, and the temperature is increased to 26C. What is the new pressure of the gas in Pa? Answer in units of Pa.
An organic substance has an enthalpy of vaporization of 29.0 kJ/mol. The compound has a vapor pressure of 524 mm Hg at 25 °C. At what temperature is the vapor pressure equal to 115 mm Hg?
The rate constant for a certain reaction is k = 1.50×10?3 s^-1 . If the initial reactant concentration was 0.650M , what will the concentration be after 13.0 minutes?
Balance the equations and indicate the type of reaction. CaO+ HCl -> CaCl2 +H2O. and also, Fe + O2 -> FE2O3
however, it takes more CaCl2 to form a White solid in one of the solutions than the other. Using the data from your experiment to help, explain what is happening when CaCl2 is reacted with the NaHCO3 (aq) or Na2CO3 (aq) solutions.
Calculate the molar solubility of PbCl2 in a 0.20 M NaCl solution. The Ksp of PbCl2 = 1.7 x 10-5. Can any assumptions be made to simplify this calculation
show the base-catalyzed condensation and dehydration products from aldol condensation of propanal
Draw the structure of Caffeine. Skeletal form only. Locate 2 bonds in the molecule that are obviously polar covalent.
To determine [Fe3+] in an unknown solution, 1.00 mL of the solution was diluted to 50.0 mL. After addition of excess SCN-, the absorption of the standard solution =0.193 at 580 nm. What is the [Fe3+]
One of the advantages offered by a synthetic detergent is that it won't form "soap scum" with hard water. Show the chemical reaction that a soap (use RCO2-) undergoes with calcium or magnesium ions
The absorbance of solutions containing Cr as dichromate Cr2O7-2 in 1.0M H2SO4 were measured in a 5cm cell. The following results were obtained
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