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Metallic iron has a bcc structure at 20 C and a density of 7.8 g/cm3. What is the length of the side of the unit cell for iron and what is the atomic radius?
The heat of formation of KCl(s) is -436.7 kJ/mol and the heat of formation of KCl(aq, 1 m) is -419.5 kJ/mol. Determine the heat of solution of KCl.
the following is a list of drugs. for this assignment use any resources available to you to find the structures of
Calculate the percentages of dissociated and undissociated forms present in the following solutions:
This Tetris ice cube game is available to play as long as the ice cubes remain ice. The game pieces weigh 178 g, and the heat capacity of the room air,
A second sample of this acid weighing 3.00 grams is added to the tirated sample and the pH is 6.60. Calcualte the molar mass of the unknown acid and determine the value of Ka for this acid.
In the reaction Cu(s) + 2AgNO3(aq) --> 2Ag(s) + Cu(NO3)2(aq), what number of grams of silver can be produced from 49.1 g of copper?
Consider the following system in equillibrium CaCO3(s) = CaO(s) + CO2(g) How many phases are present. Explain.
a 0.0490 molal aqueous nabr solution freezes at -0.173degc. what is its apparent percent dissociation in this solution?
cake alum aluminum sulfate is commonly used to purify sewage. what mass of precipitate aluminum hydroxide forms when
the solution diluted in half by water ( 1mL of X and 1mL of H2O) has an absorbance at 425 nm of 0.8 and a molar extinction coefficient of 1.5 x 10^3 M^-1 cm^-1. what is the molar concentration of the original solution of X
5ml of solution A was added to enough water to make 100ml of solution B. Finally 5ml of solution B was added to enough water to make 100ml of solution C. What was the concentration of Erythrosin B in solution A,B, C
The alcohol (ethyl alcohol) content of the bottle of beer in a 12 oz is about 5%. Identify the substance produced in the liver that helps catalyze this reaction.
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