Calculate the percent error between your average experimental value and theoretical value for the mass percent  of oxygen in KClO3. Show your work clearly.  ev = 40.767% tv = 39.2%

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n lo Report Form, Density of Nails, Baby Oll, ana MOPE Analysis of Results and Other Questions Densities (in g/cm at 25°C) 6. Assuming your nails are made of one of the elemental metals in the table (right), what is the most likely Mg 1.74 metal? How confident are you that they are made up of that metal? Explain. Zn 7.14 Cr 7.15 Sn 7.26 niloded lo sl Fe 7.87 Ni 8.90 8.96 Pb 11.3 Au 19.3 o dee 7. (a) Search the web for a value for the density of baby oil (if no T is given, it is assumed to be near room T): Source company or site name where you got the value (don't list the full URL): (b) Search the web (Google is best here) for the density of mineral oil from Sigma-Aldrich (a chemical company): (c) As you learned during your prelab (hopefully!), baby oil and mineral oil are not pure substances. As such, their composition (and thus density) can vary a bit, which would not be so for a pure substance (at a given T). That is why you likely found varying values-or ranges of values-for baby…

(2a-302-62.73) Which of the following is the lightest? Show all work to explain your answer. 15.8 mol of helium 3.11 x 1023 molecules of nitrogen trichloride 62.73 g of titanium

Find the mass of 2.45 X 1023 molecules of Ca(OH)2? Use: Ca = 42.0g, H = 1.25g and O = 15.7g as average atomic mass.

What is the average atomic weight for a hypothetical element "Q" which is composed of the following mass isotopes and their corresponding percent mass abundances? Hint: express your answer to four significant figures or risk losing all credit! Do not include the unit "amu" in your answer. mass of % mass isotope abundance (amu) 39.63 32.11 40.59 55.24 42.99 12.65