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As part of your explanation, explain what a "spectator ion" is.
dissolving 3.00g of impure CaCO3 in excess HCl produced .656L of CO2- measured at 20C and 782mmHg. calculate the percent by mass of the CaCO3 in the sample.
The density of the gas doesn't change The temperature of the gas increases The temperature of the gas decreases The mass of the gas decrease
Which of the following solutions is a good buffer system? A) A solution that is 0.10 M HF and 0.10 M NaC2H3O2 B) A solution that is 0.10 M NaOH and 0.10 M KOH C) A solution that is 0.10 M HC2H3O2 and 0.10 M NaC2H3O2 D) A solution that is 0.10 M HC..
When an aqueous solution that is 1M each in HCl, ZnCl2, and CoBr2 is electrolyzed, the elemental products formed initially at the cathode and anode are, respectively
If the mole fraction of benzen in a particular benzen-toulene solution is 0.64, what is the mole fraction of benzen in the vapor phase of equilibrium with that solution? My teacher says answer is 0.87. I don't how he got that answer??
It is found that 4.68e-06 g of Nd2(CO3)3 dissolves per 100 mL of aqueous solution at 25 oC. Calculate the solubility-product constant for Nd2(CO3)3
A sample of hydrogen gas was collected over water at 21°C and at a pressure equal to the atmospheric pressure of 748 mm Hg. The volume of the sample was 512mL. Explain how many grams of H2 are in the sample. The vapor pressure of water at 21°Cis 1..
Question- For the following electrochemical cells, calculate the reduction potential and determine if the cell reaction is spontaneous as written at 25°C.
The mass percent of an element in a compound is the mass of the element (total mass of the element's atoms in the compound) divided by the mass of the compound
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.
reacted with 0.0040 mol NaOH (very strong base) and then brought up to a volume of 1.0 liter with water. What is the pH of the resulting solution?
Explain what percentage of hydrogen peroxide has been decomposed in Mixture 1 when 20.0 ml of O2 gas has been evolved? Assume your room temperature
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