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A 4.53g sample of a solid containing Ni is dissolved in 20.0mL water. A 5.00mL aliquot of this solution is diluted to 100.0mL as well as analyzed in the lab. Explain the solution was determined to contain 6.83ppm Ni.
Find out the molarity of Ni in the 20.0mL solution.
Find out the mass in grams of Ni in the original sample.
Find out the weight percent of Ni in the sample.
A mixture is prepared using 25.00 mL of 0.08000 M aniline, 25.00 mL of 0.06000 M sulfanilic acid and 1.00 mL of 1.230 × 10-4 M HIn and then diluting to 100.0mL
What is the value of Kf for acetic acid, given that its freezing temperature is 16.6 C and its density is 1.049 g/mL?
What is the reaction type as well as the number of ATP, NADH, FADH2, and CO2 generated in each reaction of glycolysis per glucose molecule
Explain what happens to the heat produced by an exothermic reaction conducted in an adiabatic calorimeter
if air is composed of 21 oxygen and 79 nitrogen at 1 bar could be separated into its pure components each at 1 bar and
Compute the frequency of light emitted when an electron in hydrogen atom goes from the n = 5 shell to the n = 2 shell.
The standard enthalpy of formation of ammonia vapor at 298K is -46.11kJ/mol. Determine its standard enthalpy of formation at 360K, given that the molar heat capacities of the reactants as well as products are given by: Cp,m=a+bT+c/T2.
A 280ml flask contains pure helium at a pressure of 754 torr . A second flask with a volume of 475ml contains pure argon at a pressure of 732 torr . If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial..
How much heat (in kJ) is evolved in converting 1.00 mol of steam at 155.0C to ice at -45.0C? The heat capacity of steam is 2.01J/g x C and of ice is 2.09 J/g x C
Suppose you take a 25.00 mL sample of this hydrochloric acid solution. You then titrate it with a 0.1477 M sodium hydroxide solution.
Find the concentration of Pb2 in 0.10 M KI saturated with PbI2. Include activity coefficients in your solubility-product expression.
for the equation below identify the substance oxidized the substance reduced the oxidizing and reducing agent and write
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