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Calculate the number of grams necessary to prepare 50. ml of 0.45 M NaCO2H. Calculate its pH.
A current of 5.53 A is pass through a Sn(NO3)2 solution. How long (in hours) would this current have to be applied to plate out 6.30 g of tin?
How many moles of CO2 will be produced in the combustion reaction starting with the 15.02 grams of ethane.
A certain first-order reaction has a rate constant of 1.00x10-3 s-1. How long will it take for the reactant concentration to drop to 1/8 of its initial value?
if 646 mL of gas at 280 K Is heated to 297 K, what will the new volume be? using charles's law
A 44 sample of water absorbs 329 of heat If the water was initially at 21.7, what is its final temperature.
The catalytic converter on your automobile contains small amounts of a precious metal catalyst. Which of the following components would you expect to be decreased in your tailpipe emissions.
A sample of molten iron occupies of a volume of 7.11 x 10-3 L. If the density of iron is 7.86 g/cm3, what is the mass of iron in grams in the sample?
If 25.0 mL of AgNO3 is needed to precipitate all the Cl- ions in a 0.795 mg sample of KCl(forming AgCl), what is the molarity of the AgNO3 solution.
Calculate the total pressure (in atm) of a mixture of 0.0270 mol of helium, He, and 0.0200 mol of oxygen, O2, in a 4-L flask at 20°C. Assume ideal gas behavior.
How many milliliters of 0.5 M NaOH are needed to exactly neutralize 100 milliliters of 1 M HCl?
How many milliliters of O2 measured at 24C and 757mmHg , are released from solution in the first minute of the reaction? Please find volume
An acetate buffer has a pH of 4.40. Which of the following changes will cause the pH to decrease?
CH4(g) + 3 Cl2(g) CHCl3(g) + 3 HCl(g) How many grams of CH4 is needed to produce 43.0 g CHCl3?
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