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The ratio of the number of atoms of the isotopes 69Ga and 71Ga in eight samples from different sources was measured in an effort to understand differences in reported values of the atomic mass of gallium
Sample: 69Ga/71Ga
1 1.526 602 1.529 743 1.525 924 1.527 315 1.528 946 1.528 047 1.526 858 1.527 93
Find the (a) mean, (b) standard deviation, and (c) variance.
A saturated solution of Na2SO4 with excess of the solid is present in equilibrium with its vapor in a closed vessel. Calculate the number of degrees of freedom, f, of the system.
A sample of gas with a mass of 1.80 g occupies a volume of 921 mL at a pressure of 733 torr and a temperature of 24 C. What is the molar mass of the gas?
identify any intermediatesin the mechanism. write the rate law for each elementary reactionin the mechanism. D) if the first step is slow and the second one is fast
One mole of an ideal gas is subjected to the changes below. Calculate the change in temperature for each case
If 159 of wet is collected over water at 24 and a barometric pressure of 737 , how many grams of have been consumed.
Explain why copper (II) and iodide are incompatible in acid media and compatible in ammonia media
A metal bulb is filled with 10.2 g of CHCl3 and 0.322 g of CH4 (two gases). What is the total pressure in the bulb if the temperature is 345 C and the volume is 50.0 mL.
You want to produce a mixture containing 19 wt% NaCl. Find the volume of the second feed solution.
Calculate the percent KBr in the mixture. Calculate the percent Mg(OH)2 in the mixture. Calculate the percent BaSO4 in the mixture
Considering the given equation Fe2O3 (s) + 3 CO (g) ? 2 Fe (s) + 3 CO2 (g) this is The overall reaction for the production of iron from iron ore (Iron (III) oxide) determine How many kilograms of iron are required to form 10,000 kilograms of Fe?
What molarity of aqueous aluminum sulfate solution can be expected to show the same conductivity
determine the net change of oxidation number of each of the elements in the redox equations.
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