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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
For a certain gas that contains merely carbon and hydrogen the mass percentage of hydrogen is known to be 14.37. It is as well known that 3.08g of the gas has a volume of 1.00L as well as a pressure of 0.970atm at 50.1 degrees Celsius. Explain w..
How could you ascertain wheter the alcohol or the carboxylic acid furnishes the hydroxyl group that appears in the molecule of water
a stone is thrown downward with a velocity of 66 feet per secound 45mph from a bridge that is 120 feet above the
The total molarity of acid and conjugate base in this buffer is 0.100 M . A student adds 9.00 mL of a 0.290 M Hcl solution to the beaker. How much will the pH change. The pKa of acetic acid is 4.760.
question the half-life of strontium-90 90sr is 25 years. this means that half of any given quantity of 90sr
Using the ionic radii Li 76pm, F 133pm, K 138pm, Br 196pm, show that LiF and KBr are consistent with the rule of thumb that the NaCl structure occurs for radius ratios between .414:1 and .732:1 and calculate densities for LiF and KBr.
Draw the structure of ninhydrin and of the colored product when it (ninhydrin) reacts with amino acids (search the internet)
Under What circumstances is it possible for the requirements for chirality at a carbon atom to be satisfied but for a molecule containing
Consider a situation in which 161g of P4 are exposed to 176g of O2. A) What is the maximum amount of P2O5 that can theoretically be made from 161g of P4 and excess oxygen
Draw the structure of two geometric isomers with the empirical formula C5H8O that gives a positive iodoform test.
The amount of nitrogen in an organic substance can be determined by an analytical method called the Kjeldahl method, in which all the nitrogen in the organic substance is converted to ammonia.
This indicates that the unknown material is a pure compound? Not be a pure compound, suggest an alternate procedure to verify the purity of the sample
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