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Problem- A small cube of aluminum measures 17.9 mm on a side and weighs 92.5 g. What is the density of aluminum in g/cm3?
Mention all the steps and procedure to determine the correct value
If the densities of 20%, 50% and 70% solutions are 0.69 and 0.58 and 0.49 g/mL, respectively, and the denisty of the unknown solution is 0.50 g/mL, what is the approximate concentration of the unknown solution.
Two scientists are experimenting with pure samples of isotope X, a highly radioactive substance. The first scientist has a sample with a mass of 20 grams.
Write the balanced chemical equations to show the ionization reactions that occur when oxalic acid is in aqueous solution. I believe i would be starting with C2H2O4 + H2O----?
In the double stranded helix structure of DNA, which bases are always hydrogen bonded to the following: cytosine, thymine, adenine, and guanine
The synthesis of Amyl acetate by alcohol and anhydride, there are some chemicals be provided: Potassium carbonate, Calcium carbonate, Sodium sulfate
One way to measure ionization energies is ultraviolet photoelectron spectroscopy (UPS, or just PES), a technique based on the photoelectric effect. In PES, monochromatic light is directed onto a sample, causing electrons to be emitted.
zn s 2hcl liq -gt h2 g zncl2 s how many moles of zncl2 form when 6.3 mol of zn
In a graph pH vs volume of NAOH(ml). Shows an equivalence point of 7.00. This graph is? 1.strong acid weak base? 2. Weak base and weak acid? 3. strong acid and strong base? 4 weak acid strong base
at ph 5-6 7-amino-2-naphthol undergoes coupling at the 8-position explain whynbsp at ph 10 the coupling occurs at the
Draw the Lewis Structure for a Nitrate Ion (NO3-1). Assign the formal charge for the central atom, Nitrogen. What is that formal charge
The pressure on 200 ml of oxygen gas changes from 380 mm hg to 760 mm hg. The temperature does not change. What is the new volume of the oxygen gas?
Explain what is the concentration of a 250.0mL solution that contains 25.0 g of Copper (II) Chloride
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