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A perfect percent yield would be 100%. Based on your results, describe your degree of accuracy and suggest sources of error.
An unknown metal is found to be arranged in a fcc structure. The density of the metal is 8.91g/cm3 as well as the edge cell length is 352.4pm find out the molar mass of the metal. Explain what is the metal.
Here are the solubilities of a particular solute at two different temperatures. Temperature (c) Solubility (g/100 g h2o) 20.0 42.0 30.0 86.0 Suppose that you have made a saturated solution of this solute using 47.0 g of water at 20.0 °C. How much ..
Compute the purity of acetic acid present in the sample in weight%. Define what was the pH of the solution after addition of 15.00mL of 0.1000 M NaOH. Explain what was the pH of the solution at the equivalence point
A 50.00 mL solution of 0.0350 M hypochlorous acid (ka = 3.5 x 10^-5) is titrated with a 0.0105 M solution of NaOH as the titrant. What is the pH of the acid solution after 15.00 mL of titrant have been added?
A hydrogen atom initially in the n=7 quantum state emits a photon having a wavelength of 2.16495E-6 m. What is the quantum number of the final state of the atom?
Question- Automobiles and trucks pollute the air with NO. At 2000 degrees C, Kc for the reaction is 4.10 x 10^ -4, and delta H = 180.6 kj. What is the value of Kc at 67 degrees C
hard water often contains dissolved and ions. one way to soften water is to add phosphates. the phosphate ion forms
What are some examples of 7a elements? How many valence electrons do these elements have? Are these elements considered reactive? What are some practical uses of some group 7a elements?
A solid Silver Group (Anion) unknowon that contains only sodium ion as a catio is acidified and divided into tow portions, to both of which 6 M HC2H3O2
A solution composed of 20.00 g C2H5OH in 60.00 g CCl4 has a density of 1.280 g/mL. Calculate the molarity of C2H5OH in the solution.
Problem- Draw the product(s) of the following reaction- cyclopentene with an O and two = O's attached + 2 ch3ch2NH2 ---->
Explain what are all the possible combinations of the isotopes of hydrogen and oxygen that can result in a water molecule. For example, one combination is 2H-2H-17O.
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