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The condensate from a steam distillation contains 8g of an unknown compound and 18g of water. The mixture steam distilled at 98 C. What is the molecular weight of the unknown
the dimensions of aluminum foil in a box for sale in supermarkets are 66^2/3 yards by 12 inches. The mass of the foil is 0.83 kg.
how do you do the lewis dot structure for NBr3 and H2O? we have to do it on Marvin sketch if any of you are familiar with it. thanks so much
a student dispensed 82mL sodium hydroxide(titrant) into the lemon juice(analyte) before the end point was reached. Estimate the analyte concentration, assuming that the acid in the lemon juice is monoprotic.
Averge frequency of light emitted a 100 w lightbulb is 5.5x10^14 Hz. How many photons per second does the light bulb emit?
When o-phthalaldehyde (1-2-benzenedicarbaldehyde) is treated with KOH, and the reaction mixture is acidified, a single neutral product, isomeric with the starting material
Determine How many mg of a 298 mg sample remains unreacted after twenty three days if 32P decompose by a first-order mechanism, half-life = 14.3 days.
consider a hydrogen atom in the ground state. what is the energy of its electron? Now consider an excited- state hydrogen atom. what is the energy of the electron in the n=2 level
A dark glass bottle of chemicals is found in cleaning out an old basement. Part of the label has been eaten away with age. Only the last part of the label is readable.
Arrange these compounds in order of increasing boiling point and explain your reasoning. (assume similar mass) CH3OCH3 CH3CH2CH3 CH3CH2OH 2. Which of the following compounds would have the greater viscosity?
She pours a 50.0 mL sample of water at 345 K into the calorimeter containing a 50.0 mL sample of water at 298 K. She carefully records the final temperature of the water as 317 K. What is the value of Ccal for the calorimeter?
How are the following aspects of a reaction affected by the addition of a catalyst. 1) activation energy of the reverse reaction A) Increased B) Decreased
The melting point of a pure compound is 152-153 C. Describe the melting behavior for this compound if it is contaminated with 5% of an impurity.
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