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In a clean 1-liter plastic bottle, place approximately one liter of distilled water. Add to this solution a sufficient volume of 50% w/w sodium hydroxide solution (density= 1.52 g/mL) to produce an approximately 0.1M solution.
The specific heat capacity of nickel from these experimental data is calculated to be 0.429J/goC Calculate the molar heat capacity of Ni in J / mol oC, to 3 significant figures
A beaker with 115 of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 . A student adds 9.00 of a 0.430 solution to the beaker. How much will the pH change? The ..
What observed rotation is expected when 1.58M solution of (R)-2-butanol is mixed with an equal volume of a 0.790 M solution of racemic 2-butanol, and the resulting solution is analyzed in a sampling container that is 1 dm long
What is the molarity of that forms when 20.0 of zinc completely reacts with according to the following reaction? Assume a final volume of 285 .
What is the vapor pressure of mercury at room temperature, 25 degrees celsius.
After the addition of the ammonium ion to a dilute solution of ammonia containing phenolphtalein it became much paler. Please explain why with LeChatelier principles.
The absolute disintegration rate of this sample is measured as 1238 disintegrations per minute. Calculate the half-life (in years) of Sr-90. How long will it take (in years) for the disintegration rate of this sample to drop to 843 disintegrations..
Marshmallow burnt is 0.70 g, mass of the water 39.9, and delta change is 12C 2. Peanut burnt is 0.5 g, mass of the water is 42.6 g, and the delta change is 12C. 3. Popcorn is 0 g burnt, mass of the water is 44.83 g, and the delta change is 1 C.
In an electron microscope the electrons generate the image. For one of the scanning electron microscopes in our Central Analytical Facility, the electrons are accelerated to have a kinetic energy of 200,000 eV.
If glass beads in the lab were replaced by a material with less surface area, will liquid seperation be better or worse. Why. Why should the recieveing flask be submersed under an ice bath when collecting isopropanol or acetone
Consider the electronic configuration for Mn (Z=25): a.) Write the electron configuration in spdf notation. b.) Write the electron configuration in Noble-gas-core-abbreviated notation.
The following data were obtained when a Ca2+ ion-selective electrode was immersed standard solutions whose ionic strength was constant at 2.0 M.
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