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Calculate the concentration of CrO4^2- in a solution that is 0.0375M in chromic acid and 0.150M HCL. (Chromic acid is H2CrO4, a diprotic acid, Ka1= 1.80x10^-1, Ka2=3.20x10^-7 & Kw=1.00x10^-14).
A gaseous mixture contains 0.30 mole of co(g), 0.10 mole of H2(g) AND an Unknown amount of CH4(g) in a litre flask. this mixture is in equilibrium at 1200 deg K acc to
You have a 10.40-g mixture of table sugar (C 12 H 22 O 11) and table salt (NaCl). When this mixture is dissolved in 150. g of water, the freezing point is found to be-2.24°C. Calculate the percent by mass of sugar in the original mixture.
why would it be difficult to determine the point where the limiting reactant changes if 13.0 ml of 1m hclaq were used
A gaseous fuel mixture stored at 745mmHg and 298 K contains only methane CH4 and propane C3H8. When 11.5L of this fuel mixture is burned, it produces 774kJ of heat. What is the mole fraction of methane in the mixture
An environmental engineer analyzes a sample of air contaminated with sulfur dioxide. To a 500m mL sample of air at 700 torr and 38 degrees celsius, she adds 20.00 mL of 0.01017 M aqueous iodine, which reacts as follows
Compare the experimental mole ratio of NaHCO3 to NaCl with the theoretical mole ratio. Explain the difference. The experimental mole ratio is 1:1.
Describe in 75 words the structure of the carbon atom. What types of bonds does carbon form and why?
how efficient is the extraction of the tea leaves containing 1.0 g of caffeine with the two 3 ml portions of chloroform
A sports-ultility vehicle has an average mileage rating of 18 miles per gallon. How many galllons of gasoline are needed for a 397-mile trip
A diprotic acid, H2A, has the following ionization constants: Ka1 = 1.1 multiplied by 10-3 and Ka2 = 2.5 multiplied by 10-6. In order to make up a buffer solution of pH 5.80, which combination would you choose, NaHA/H2A or Na2A/NaHA? What is the p..
what is the mass in grams of 30.0 mL of the liquid propylene gylcol, a moisturizing agent for foods, which has a density 1.036 g/mL at 25 degree Celsius.
Acetone, the solvent in some nail polish removers, has a density of 0.791 g/mL. What is the volume of 20.4 g of acetone?
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