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If an undetected bubble of air were trapped inside the gas collection tube, what would be its effect on the percent yield in your experiment. Would the actual yield (and thus the percent yield) be erroneously high, erroneously low, or unaffected by the bubble of air? Explain.
This was a magnesium reacting with HCL experiment. Mg wrapped in copper lowered into tube with water and Hydrochloric acid. Tube placed upside down into pail of water.
A volume of 25.0 mL of 0.100 M C6H5CO2H(aq) is titrated with 0.100 M NaOH(aq). What is the pH after the addition of 12.5 mL of NaOH. (Ka of benzoic acid = 6.3 ´ 10-5)
A sample of nitrogen gas has a volume of 3.0 L at 25 degrees Celsius and 720 torrs. What would the volume be at STP?
What pH is needed such that the maximum [Mg^(2+)] in solution is 2x10^-4 M given the equilibrium: Mg(OH)2(s) Mg^(2+) + 2OH^(-)
The equilibrium constant for a certain reaction decreases from 8.51 to 3.3e-2 when the temperature increases from 24°C to 73°C. Estimate the temperature where K = 1.00 for this reaction. T in Kelvin.
If the reaction of phosphate ion with water is ignored define what is the total concentration of ions in a solution prepared by dissolving 3.00 g of K3PO4 in enough water to make 350mL of solution
A canister is filled with 320 g of ice and 100. rm g of liquid water, both at 0 rm{^{circ}C} . The canister is placed in an oven until all the rm H_2O has boiled off and the canister is empty. How much energy in calories was absorbed?
What mass of CaCO3 will produce 8.0 L of CO2, measured at standard temperature and pressure conditions? Molar mass of CaCO3 = 100. g per mole.
Problem- A reaction vessel contains 10.0g of CO and 10.0g of O2. How many grams of CO2 could be produced according to the following equation: 2CO + O2- 2CO2
If a bottle of nail polish remover contains 177 ml of acetone, how much heat would be released by its complete combustion? The density of acetone is .788 g/ml
A certain weak base has a Kb of 7.70 x 10 ^-7. What concentration of this base will produce a pH of 10.22
a solution is prepared by dissolving 4.21 g of a non electrolyte in 50 g of water. if the boiling point increases by .203 degree celsius, what is the molar mass of the solute? the boiling point elevation constant for water is .502 degree celsius p..
Problem- Calculate the resulting aqueous silver ion concentration in the solution formed by combining 15.0 ml of 0.250 M CaCl2 (aq) and 30.0 ml of 0.400 M AgNO3 (aq)
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