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A solution containing 10.0 mmol CaCl2 is diluted to 1 L. Calculate the number of grams of CaCl2 . 2H2O per milliliter of the final solution.
The combustion of carbon with excess oxygen forming carbon dioxide is exothermic. C(s) + O2(g) => CO2(g) ?Hrxn = -393 kJ If 9,494kJ of heat is needed from the combustion, how much carbon (g) must be consumed? Enter your answer with three significa..
A sample of vapor occupies a volume of 125 mL at 100 degrees C and 748 torr. What is the volume of the same sample under STP conditions?
The equilibrium constant Kc for this reaction is greater than one. Based on this information, which of the following statements is correct?
What is the relationship between energy and the wavelength of an electromagnetic radiation
What mass of NaOH is needed to precipitate the Cd+2 ions form 35.0mL of .500 M Cd(NO3)2 solution
How many millliters of 0.750 M H3PO4 are required to react with 250. mL of 0.150 M Ba(OH)2 if the products are barium phosphate and water
A bu?er was prepared by mixing 1.0 mole of ammonia and 1.0 mole of ammonium chloride to form an aqueous solution with a total volume of 1.00 liter.
A reaction that is used to propel rockets is N2O4(l) + 2N2H4(l) --> 3N2(g) + 4H2O(g). This reaction has the advantage that neither product is toxic, so no dangerous pollution is released.
Iodine does not have a permanent dipole and is therefore a non-polar molecule. Why Iodine does not have a permanent dipole a) electronegativities of two iodine atoms are identical b) two iodine atoms will cause partial charge separation
Show how butyric acid can be synthesized from 1-propanol. Do not use a metallorganic reagent. You will need more than one reaction.
a solution of acidic potassium permanganate is added to a solution of iron (II) sulfate Write an unbalanced net ionic equation
A compound that is composed of only phosphorous and sulfur has a molecular weight of 222.27 g/mol. If the compound is 72.13% sulfur by mass, what is the name of the compound.
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