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Cobalt chloride hexahydrate has a formula weight of 237.9 g/mol. How much would you use to make 0.5 liter of a 0.3 M solution?
a 1.30 gram sample of dry ice is added to a 755ml flask containing nitrogen gas at a temperature of 25.0 degrees
Reactions that produce Arrehenius plots with large slopes are more or less sensitive to temperature than reactions that produce Arrhenius plots with small slopes
Suppose y was measured five times and average of these five measurements was 3.24. What is the uncertainty in x based on these five measurements
the total quantity of coal burned in canada and the united states in a year is approximately 450 x 106 t. the average
an aluminum rod at 55.0 degrees celsius is put into 399 grams of water at an initial temperature of 20.0 degrees celsius. If the final temperature of water and rod are 30.0 degrees celsius, what was the mass of the aluminum rod?
At 580 nm the wavelength of its maximum absorption, the complex FeSCN2+ has a molar absorptivity of 7X10^3 L cm-1 mol-1 calculate
Write a balanced net ionic equation to show why the solubility of MgF2(s) increases in the presence of a strong acid and calculate the equilibrium constant for the reaction of this sparingly soluble salt with acid.
A volume of 80.0 mL of a 0.520 it M HNO_3 solution is titrated with 0.590 it M KOH. Calculate the volume of KOH required to reach the equivalence point?
What is the structural formula of the product in the following alkene addition reaction; CH3-CH=CH2+H2O and H2SO4
in hundreds of thousands of homes across the country family swimming pools and spas require sanitation and maintenance
There are two carboxylic acid functions in 3-nitrophthalic acid. The pKa of the acid function is at the 2-position is approximately 2, whereas that at the 1- position is about 3. Which of the two is the more acidic and why
Solid silicon and solid magnesium chloride form when silicon tetrachloride gas reacts with magnesium metal. Write a word equation and an unbalanced formula equation. Include all of the appropriate notations.
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