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The ability to read a scale is becoming a lost art. Our Abbé refractometers use just such an old fashioned scale. With a line of people behind youwaiting to use the instrument, you will need to be able to quickly and accurately read your refractive index. What are the refractive indices, to four decimal places, of the three samples below
How much heat energy is required to raise the temperature of 0.367 kg of copper from 23.0 degrees C to 60.0 degrees C? The specific heat of copper is 0.0920 cal/(g*C)
Draw and label a double helix strand of GTAC and its cpmpilmentry matchiong strand. indicate all hydrogen bonds with dashed lines.
Calculate the mass of sodium hydroxide that must be added to 1.00 L of 1.00 M HC2H3O2 to double the pH of the solution (assume that the added NaOH does not change the volume of the solution)
magnesium burns in air to produce a bright light and is often used in fire works displays. the combustion of magnesium
At 50 degrees celsius a sample of ammonia gas exerts a pressure of 6.5 atm. What is the pressure when the volume of the gas is reduced to 20% of the original value at the same temperature
the maximum number of electrons in an atom that can have quantum numbers n2 and l1 is a. 2 b. 4 c. 6 d. 8 2 which
Through a valve, 7.0g of nitrogen gas is added to the bottle with balloon discussed in b). The temperature and external pressure are constant. Calculate the partial pressure of nitrogen.
A certain bike tire deflates (via effusion) through a hole in 60.00 minutes when filled with pure Nitrogen gas. If the same bike tire, inflated to the same pressure with an unknown gas under all the same conditions, deflates in 71.71 minutes, what..
a student sets up two reactions. reaction 1 uses 0.210moll of reactant and reaction 2 uses 0.550moll of reactant. how
Define what would happen if the Mg ribbon was left out and a layer of Magnesium oxide formed on it and was not rubbed off with the steel wool. Explain what would happen to your results. Define and why is it significant that we compute the volume o..
a 1.00L buffer solution is 0.250 M in HF and 0.250 M in NaF. Calculate pH of the solution after the addition of 100.0mL of 1.00M HCl. Ka for HF is 3.5x10^-4
the boiling point of another member of this homologous series wasfound to be 309 . what is the likely molecular formula
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