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Presume a solution was too concentrated for an accurate reading with the spectrophotometer. The concentrated solution was thinned by placing 1.00 mL of the concentrated solution in 4.00mL of water. The solution was then placed in the spectrophotometer as well as an absorbance was obtained and after a few calculations the molar concentration was computed to be 3.5 × 10-6 M. Explain what was the concentration of the original solution
A .0678 g sample of tin sulfate was dissolved in dilute HCl and treated with 10% BaCl2 solution. The BaCl4 precipitate weighed .0737 g. Determine the formula of this sulfate of tin.
the heat capacity of a bomb calorimeter is found to be 5.68 kjoc. when a 1.652 g sample of glucose is burned in the
Standard state is the physical state in which a substance is stable at 1 atm of pressure and a specified temperature
An aluminum atom has a diameter of 143 pm. How many aluminum atoms can be placed on a line 1.00 mm long
a solution of 0.20 m of magnesium sulphate mgso4 has an observed osmotic pressure 7.6 atm at the temperature of twenty
When the temperature is increased from 164.5°C to 179.0°C, the rate constant increases by a factor of 4.27. What is the activation energy of this oxidation reaction?
1. what must be happened to the extent of interaction for a much longer hydrocarbon chain like cetane for example
In the following conditions calculate the moles of hydrogen and the pressure in each flask where the volume is negligible. Each flask is originally 275K with .455 mols of hydrogen gas and .7atm of pressure. Then one flask is heated to 500K while t..
You weighed out 204 mg of maleic anhydride. Which volume of 2,3-dimethylbutadiene will you need to add? The answer should be in mL with three digits after the decimal point.
Assume for the purposes of this problem that, to be an alcohol (-ol) or an amine (-amine), the hydroxyl or amino group must be bonded to a tetrahedral (sp3 hybridized) carbon atom. Write the structural formula of a compound with an unbranched chai..
Consider the following reaction: SO2Cl2 (g) SO2 (g) + Cl2 (g). K = 2.99*10^-7 at 227 degrees celsius. If a reaction mixture initially contains 0.159 , what is the equilibrium concentration.
Correlate the molar mass, molecular size, and bond polarity of these three gases with the molar volume of a perfect gas. O2, Co2, and H2
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