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The estimated costs for remodeling the interior of an apartment are: three gallon cans of paint at $13.22 each (including tax), two paint brushes at $9.53 each (including tax), and $135 for a helper. The total estimated cost with the appropriate significant figures is $
a 0.331-g sample of aspirin prepared in the lab was dissolved in 95 ethanol and titrated to a phenophthalein endpoint
acetylene (C2H2) torches are used in welding. How much heat in kJ evolves when 5.0g of C2H2 (d=1.0967kg/m^3) is mixed with a stoichiometric amount of oxygen gas?
A 303- sample of unknown solution reacts completely with to form 14.1 . What was the concentration of the solution?
What is the vapor pressure of the stored mixture?
Consider the galvanic cell with Sn2+/Sn and Ag+/Ag both prepared with NO3- as their anion and all solutions prepared at 1.0 M. What is the reduction half-reaction and does it occur at the anode or cathode? Also..what is the standard cell potential
A solution of 75.0 g of benzene (C6H6) and 75.0 g of toluene (C7H8) has a total vapor pressure of 80.9 mmHg at 303 K. Another solution of 100.0 g benzene and 50.0 g toluene has a total vapor pressure of 93.9 mmHg at this temperature.c
What mass of Cu is electroplated by running 13.0 A of current through a Cu^2 solution for 4.00 h? Express your answer to three significant figures and include the appropriate units.
Calculate the amount of energy in kilojoules needed to change 135 of water ice at -10 degrees Celsius to steam at 125 degrees Celsius.
Uranium-235 is an important nuclear fuel. However, the ^235Uisotope is only a very small amount of naturally occurring uranium. Therefore, taking advantage of gas diffusion rates and molecular masses, naturaly occurring uranium(IV) oxide is conver..
a gas-filled balloon having a volume of 6.00 l at 1.2 atm and 25degc is allowed to rise to the stratosphere about 30 km
solution of cesium phosphate d. 7.92 x 10^-15 M solution of Hg2+ and a saturated solution of H2S at a pH of 0.5.
Calculate the pH of a buffer solution made by adding 10.0g of anhydrous sodium acetate (NaC2H3O2) to 100 ml of 0.100M acetic acid.
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