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In a candy factory, nutty chocolate bars contain 22.0% by mass pecans. If 5.1kg of pecans were used for candy last Tuesday, how many pounds of nutty chocolate bars were made?
What is the molecular weight of a gas if a 21.0 g sample has a pressure of 836mmhg at 25.0 degrees c in a 2.00L flask
there are 2.2 mg of lead in exactly 500 g of a water sample. what would the concentration of lead be in parts per
Molecular Formula of a Compound from Percent Composition and Molar Mass, What is the molecular formula of a compund that contains 42.87%carbon, 3.598% hydrogen, 25.00% nitrogen
Patients with a high body temperature are often given "alcohol baths." The heat of vaporization of isopropyl alcohol (rubbing alcohol) is 159 cal/g. How much heat is removed from the skin by the evaporation of 190g about 1/2 cup) of isopropyl alco..
The number of different constitutional isomers that can be drawn for C2H4Br2 is equal to
Draw the skeletal structure of meso-2,6-diaminopimelic acid (meso-2,6-diaminoheptanedioic acid). (Show one wedge bond, one dashed bond, and two sticks attached to the chiral carbon.
At 298k for the cel Pt(s)H2(1 bar)|HCl(0.124m)|AgCl(s)|Ag(s) the electrochemical potential was measured at 0.342V. Calculate the mean activity coefficient for HCl.
At a given temperature, 2.74 atm of F2 and 2.08 atm of Br2 are mixed and allowed to come to equilibrium. The equilibrium pressure of BrF is found to be 1.003 atm. Calculate Kp for the reaction at this temperature. F2(g) + Br2(g) 2 BrF(g)
One Step is a product sold as a cleaner/sanitizer and has the formula 2Na2CO3?3H2O2. If 15.175 g of this compound is dissolved in water and diluted to exactly 1 gallon as directed
Calculate the number of grams of HC2H3O2 needed to make 450 mL of 0.322 M solution.
What is the principal quantum number of the valence electrons in an atom lead? EXPLAIN how you got your answer.
Determine q for the acid-base reaction, assuming that the liquids have densities of 1.00 g/mL and the same heat capacities as pure water.
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