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An alloy containing Al is analyzed. All the solution reacts with 212mL of 0.493M HCl in the 2.500g sample of alloy. calculate the mass percent of Al in the alloy.
A certain reaction has an activation energy of 27.03 kJ/mol. At what Kelvin temperature will the reaction proceed 3.00 times faster
organelles compartmentalize a cell like a department store displays similar items together. what advantage does such
Calculate the heat capacity of satan, i. e. Ni . if 30.0g of nickel at 100.0 c raises the temperature of 25.0g of water from 22.0 c to 30.8 c . assume no heat loss to the surroundings.
Which of the following clusters of orbitals would form the shape and would also be possible within the valence shell of an atom
A bioengineer preparing cells for a cloning experiment bathes a small piece of rat epithelial tissue in a TRIS buffer, (HOCH2)3CNH2. The buffer is made by dissolving 44.0 g TRIS (pKb = 5.91) in enough 0.065 M HCl to make 1.00 L of solution.
An acetic acid solution is 6.00M and has a density of 1.04 g/Ml. What is the mass/ mass concentration of HCH3O2 (60.06g/mol)
calculate the amount of heat evolved in the complete oxidation of 8.17 g of al at 25oc and 1 bar pressure. the standard
When 33.5 mL of 0.580 M H2SO4 is added to 33.5 mL of 1.16 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate ?H of this reaction.
What do you notice about the element Technetium (Tc) compared to the other elements around it? You see the same thing as some of the very heavy elements
Balance the following equations. (Use the lowest possible whole-number coefficients. These may be zero.) (a) ClO3-aq) + As(s) Æ HClO(aq) + H3AsO3(aq) ClO3
Perform whatever separations and tests you think necessary to determine which ions are in fact present
If 3.0 L of oxygen gas at 177°C is cooled at constant pressure until the volume becomes 1.50 L, then what is the final temperature
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