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How much additional heat (in Joules) is needed to raise 5 kg of glass by 20 degrees, than 5 kg of gold by 20 degrees?
It takes 585J of energy to raise the temp of 125.6g mercury from 20.0 degrees C to 53.5 degrees C. Calculate the specific heat capacity and the molar heat capacity of mercury
As the liquid vaporizes the plunger is pushed out. At equilibrium, the plunger reads 6.51 mL of gas. Atmospheric pressure is 740. mmHg. What is the approximate molar mass of the compound (in g/mol)?
If 0.20mL of methyl benzoate and 0.45mL of concentrated (18M)sulfuric acid PLUS 0.15mL of concentrated (18M)sulfuric acid and 0.15mL concentrated (16M)nitric acid were added together and the end product was methyl-3-nitrobenzoate
In the (unbalanced) photosynthesis reaction above, Fill in the Blank 01 kg of glucose are produced if 44 kg of carbon dioxide are consumed. Make sure to balance the equation first.
Based on your knowledge of the TLC of the components of Excedrin, propose an experiment that would separate these components, including the order of elution off a chromatography column.
A substance has an extinction coefficient of 5 x 10^5 L cm^-1 mol^-1. A concentrated solution of this substance has an absorbance too high to measure. You dilute 1 ml of this solution to 25 ml with distilled water; the measured absorbance is 0.2.
If an electron in a hydrogen atom starts in the fifth energy level then emits a photon of 433 nm light, to which energy level did it fall?
A solution contains 45.0mL of .75 M HA(aq) (Ka=1.3e-5) and 55.0mL of .700 M LiA. Explain what volume of .10 M HCL(aq) must be added to change the pH of the original solution by 5.0%
question a 0.100 m solution of a certain weak acid ha is found to have a ph of 2.45. calculate the ionization for the
Give the formula of a product (derived from the first-named substance) that may be formed in the following reactions. (Note, in the example that any lower oxidation state compound is possible: but not any higher one. Some are more probable than ot..
when 157 mg. of dipentylamine was added to 122 mg. of benzoic acid and 2 ml of water a completely homogenous solution
Calculate the apparent degree of dissociation of the NH4Cl if the freezing point of this solution is -15.3OC?(Molal freezing point constant =1.86 0C)
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