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Write the reactions for which the enthalpy change will be for solid aluminum oxide. Include steps
How many grams of potassium phthalate must be added to 750 mL of 0.0500 phthalic acid to give a buffer of pH 5.75?
Most community water supplies contain 0.5 ppm chlorine added for purification. What mass of chlorine must be added to 1500. L of water to reach this level. (Hint: the density of water is 1.00 g/mL)
How many milliliters of 5 M NaCl are required to prepare 1500 mL of 0.002 M NaCl. What will be the concentration of the diluted solution expressed in millimolars, micromolars, and nanomolars.
Reaction of methanoic and ethanoic acids with CaCO3, If I have a 1 liter aqueous solution that contains 15 mg/L methanoic acid and 15 mg/L ethanoic acid
A particular brand of gasoline has a density of 0.737 at 25 . How many grams of this gasoline would fill a 13.6 tank
Write a balanced chemical equation for the standard formation reaction of gaseous hydrogen cyanide.
A chemist decomposes several samples of water into hydrogen and oxygen and weighs the hydrogen and oxygen obtained. The results are: 1) 1.5g H and 12g O 2) 2g H and 16g O 3) 2.5g H and 20g O.
A sports-ultility vehicle has an average mileage rating of 18 miles per gallon. How many galllons of gasoline are needed for a 397-mile trip
Zinc metal can be obtained from zinc oxide (ZnO) by reacting the oxide with the element carbon. The products of the reaction are Zn and CO2. What mass of zinc oxide is needed to react completely with 2.22 mol of carbon? Answer in units of g
suppose that cells are grown on amino acids that have all been labled with 13C at the alpha carbons. identify the atoms in cytosine and guanine that will be labled
From this information and the atomic mass, calculate the edge length of the unit cell. Now assume that rubidium atoms are spheres. Each corner sphere of the unit cell touches the body centered sphere. Calculate the radius of a rubidium atom.
2.00 x10^2 mL of .500 M HCl is mixed with 2.00 x 10^2 mL of .250 M Ba(OH)2. how many moles of water are produced in the reaction
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