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A thief uses a bag of sand to replace a gold statue that sits on a weight sensitive, alarmed pedestal. The bag of sand and the statue have exactly the same volume, 1.70L. (assume that the mass of the bag is negligible.)
Calculate the mass of each object.(density of gold=19.3g/cm^)3)(density of sand=3.00g/cm^3
What volume of a 3.00 M solution of phosphoric acid is needed to react completely with 75.0 mL of a 2.58 M solution of calcium hydroxide?
The heat of vaporization of a liquid is the energy required to vaporize 1.00 mol of a liquid at its boiling point. In one experiment, 60.0 g of liquid nitrogen (boiling pt = -196C) is poured into a Styrofoam cup containing 200.0 g of water at 55.3..
Calculate the extent of reaction at gel point for a mixture of 0.8 moles of pentaerythritol , 0.5 moles of ethylene glycol and 2.0 moles of phthalic acid.
We are given an unknown antacid pill and through the procedure in this lab we determine its cost effectiveness to be 5.0x10-1 mole of acid/$. Can we also determine the number of moles of base in the pill
Assume the first equivalence pont is around 13.30 ml,for an experiment. while carrying out the ph meter titration approximately at which volume will you
An electron in the n=4 energy level of a He+ atom could be in any number of degenerate energy states or orbitals. List all of the possible values of the 1 and m1 quantum numbers for n=4, identify the 1 values in terms of the usual letters
how many moles of glucose C6H12O6 can be burned biologically when 10.0 mole of oxygen is available
A 1.20 sample of dry ice is added to a 745 mL flask containing nitrogen gas at a temperature of 25.0 C and a pressure of 735mmHg .
calculate the equilibrium pressure of N2O4(g) and NO2(g). (c) What percentage (by moles) of the original N2O4(g) is dissociated at the new equilibrium position (total pressure = 1.00 atm)?
a solution is prepared by adding 30.0ml of 0.060m hbr to 130.0ml of 0.40m hi. calculate the concentrations of all
The second-order reaction 2 Mn(CO)5 Mn2(CO)10, has a rate constant equal to 3.0 x 10^9 M-1 s-1 at 25C. If the initial concentration of Mn(CO)5 is 2.0 x 10-5 M, how long will it take for 90.% of the reactant to disappear?
What is the formula of precipitate if 6M NaOH is added slowly to a solution containing Chromium (III)
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