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A 500-g sample of Al2(SO4)3 is reacted with 450 g of Ca(OH)2. A total of 596 g of CaSO4 is produced. What is the limiting reagent in this reaction, and how many moles of excess reagent are unreacted?
Calculate deltaS(Jmol^-1K^-1) for oxalic acid and delta S (Jmol^-1K^-1) for the combustion of one mole of oxalic acid.
Calculate the mass fractions of the components in the mixture and the average molecular weight of the gas mix. b)The gases are mixed with 20% excess air and completely combusted with 100% conversion
One of those bands consists of radio waves with a wavelength near 20.m . Calculate the frequency of these radio waves. Be sure your answer has the correct number of significant digits.
Given that the atomic mass of carbon is given as 12.0107 g/mol, what are the approximate relative abundances of the two isotopes 12C and 13C?
A steel tank has a volume of 438 L and is filled with 0.885 kg of oxygen. calculate the pressure of oxygen at 69.8 fahrenheit.
A .499 mol sample of graphite was heated with 2.16 mol oxygen gas to form carbon dioxide. Graphite is the limiting reagent in this reaction. Calculate the total moles of gas present after the reaction?
Draw a three-dimensional structure of CH3CL. Include all non-bonding pairs in your drawing. Shoe the direction of the molecular dipole and indicate bond angles.
What is the number of moles of O2 needed to burn 260.0g of C2H2 in the reaction: 2C2H2 + 5O2 yields 4CO2 + 2H2O?
A typical deposit of cholesterol, C27H46O, in an artery has a mass of 3.90 mg. How many molecules of cholesterol are present in this deposit?
Find concentration of each ion present in the solution formed by mixing: 44.0 mL of 0.150M Na2SO4 and 25.0 mL of 0.200M KCl.
Produce a buffer solution that has a pH of 5.32. You already have a solution that contains 10 \rm mmol (millimoles) of acetic acid. How many millimoles of acetate
A 45g piece of ice at 0 degree C is added to a sample of water at 21 degree C. All of the ice melts and the temp of water decreases to 0 degree C. How many grams of water where in the sample?
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