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A specific brand of gourmet chocolate candy contains 7.00 g of dietary fat in each 22.7-g piece. How many kilograms of dietary fat are in a box containing 3.00 lb of candy?
what will be the final concentration of the seawater at 20 °C when reverse osmosis stops? Assuming that seawater has a total ion concentration (a.k.a colligative molarity) of 1.10 Mc, calculate how many liters of seawater are needed to produce 15...
A balloon was filled to a volume of 2.50 L when the temperature was rm 30.0 C. What would the volume become if the temperature dropped to rm 11.0 0C.
Pure metals are commonly recovered from sulfide ores by successive processes of roasting in air (oxidation), dissolution in sulfuric acid and electrolysis (reduction). Consider the starting ore mineral sphalerite (ZnS). Write balanced chemical rea..
Calculate the rate at which sulfur dioxide is being produced. Give your answer in kilograms per second. Be sure your answer has the correct number of significant digits.
The Kb of 2,4,6-trimethylpyridine is 2.7x10-7 I've really been struggling with this stuff because i've been out of school sick, if there is any way that the steps can be shown in a more broad spectrum instead of ever little detail that would be ap..
A solution of sodium chloride contains 502 g NaCI in 900 grams of water. what is the concentration of the colution in parts of a million (ppm)? Round to the nearest tens place. don't forget the unit.
Determine the molarity of a solution of the weak acid HCl)2; Ka = 1.10*10^-2 if it has a ph of 1.25.
Using words and pictures, explain why impurities usually lower the melting point of a substance. Next, imagine a case where an impurity actually RAISES the melting temperature of a pure substance
what is the molarity of a 99.O mL ethanol solution containing 8.11g of ethanol (C2H5OH)
What types of bonds are responsible for the secondary structure of a protein? How would the addition of a heavy metal affect the secondary structure of a protein?
Rank SCl2, PCl3, and SiCl4 in order of increasing ionic character of their bonds. Use polar arrows to indicate the bond polarity of each bond.
an 8 g sample of a copper ore was dissolved in an acid solution and then reacted with NO3- from a KNO3 salt solution. it required 71.5 ml of a .155 M KNO3 solution to fully react the copper in the ore sample.
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