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What is the percent error if average value of measurement is 12.3g and the reference value of mass is 12.8g?
What volume of 1.5 M sodium hydroxide solution is required to completely neutralize 250 mL of 4.0 M sulfuric acid?
For [Co(en)(NH3)2Cl2]ClO4 identify the coordination number of cobalt, the coordination geometry for cobalt, the oxidation number of cobalt, the number of unpaired electrons
Reaction of NO with chlorine to yield NOCl is pseudo-first order if NO is present in a large excess. Determine the rate constant of this reaction i
double bond energy= 837 h single bond cl = 431 C single bond C = 347 C single bond H = 414 C single bond Cl 339 It says answer is -154 kJ but im not getting that
Problem- Describe ways in which the retention or capacity factor can be increased. Are there any tradeoffs associated with these changes. Are there limits to the effect that increasing the retention factor has on chromatographic resolution.
Two gases are cobntained in gas bulbs connected by a valce. gas a is present in a 1 liter bulb at a pressure of 927 torr. gas b exerts a presure of 254 torr in a 1 liter bulb. the valve is 0pened and the two gas equilibrate. what is the partial pr..
The density of helium gas is 0.1785 g/L. Calculate its molar volume. Molecular weight of He= 4.00 g/mol. Hint L/mol. (please show steps)
If the initial concentration of A2X is 2.00 M and 15.0% of the A2X vapor is dissociated when equilibrium is reached, what is the value of the equilibrium constant for the reaction?
the mixture of saltwater and ice around the ice cream bucket in the ice cream machine is at a temperature of -8.40c.
Iodide is oxidized by hydrogen peroxide according to the following mechanism:
A 350.0 gram sample of copper is initially at 25.0 °C. It absorbs 12.50 kJ of heat from its surroundings. What is its final temperature, to the nearest tenth of a degree?
A chemist needs to determine the concentration of a solution of nitric acid, HNO3 . She puts 725 mL of the acid in a flask along with a few drops of indicator. She then slowly adds 0.400 M Ba(OH)2 to the flask until the solution turns pink, indica..
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