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How many grams of sodium formate (HCOONa) must be dissolved in a 0.250 M solution of formic acid (HCOOH) to make 500.0 ml of a buffer solution with a pH=4.60? Assume the volume of the solution remains constant when you add the sodium formate. Ka =1.8x10^-4.
Use the octet rule to predict the formula of the compound that would form between tellurium and iodine, if the molecule contains only one tellurium atom and only single bonds are formed.
For the following redox reaction, determine the oxidation states of all of the elements in the products and reactants. Which reactant is reduced and which is oxidized. Also, determine the reducing and oxidizing agents. Mg(s) + 2HCl(aq) ? MgCl2(aq)..
skiers and group engaged in outdoor activities in a frosty climate can access portable hot packs. mixture of powdered
Gold has a density of 19.30g/cm3. How much water would 1.111 ounces of gold displace in a calibrated cylinder (1 ounce = 28.35g). Give your result in mL.
an aqueous solution of copperii sulfate and an aqueous and an aqueous solution of sodium phosphate are mix together in
A doctor has ordered that a patient be giving 25 grams of glucose, which available in a concentration of 55.00 grams glucose/1,000.0 ml of solution.
1.00 mol HF and 0.500 mol NaOH are both dissolved in water making 1.00L solution. Calculate the pH of the solution
How long will it take to deposit 0.00470 moles of gold by electrolysis of KAuCl4 (aq) using a current of 0.214 amperes? Which metal would be suitable to provide cathodic protection from corrosion for an iron bridge?
When 0.78 g of an unknown gas in contained solely in a 560 mL container, the pressure is 780 Torr at 5 degrees Celcius. What is the molar mass of the gas in grams/mole?
if 32.7 ml of 0.225 m koh is required to completely neutralize 28.0 ml of a ch3cooh solution what is the molarity of
a sample of toothpaste was analyzed for its fluoride content by treating a 250 mg samplenbspwith an ionic strength
What is the maximum Mg2+ concentration that will avoid precipitation in a solution of pH = 10
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