Find the following antilogs to the correct number of significant figures. a) antilog(4.663) = b) antilog(0.008) = c) antilog(-3.7795) =

be sure your answer is correct and have the correct number of significant digits

9

Percentage Abundance. The element rubidium consists of two isotopes, one having an isotopic mass of 84.912 and the other having an isotopic mass of 86.920.  Determine the percentage abundance of the lighter isotope.  Record the answer to the correct number of significant figures. Show the numerical set-ups.  Include units and the correct number of significant figures in the set-up.

codeine, C18H21 NO3 Express your answer in percent to three significant figures. %0 = IVE ΑΣΦ μεταγρα ? %

Calculate the number of carbon atoms in a 50.0 g sample of camphor (C10H160). Be sure your answer has a unit symbol if necessary, and round it to 3 significant digits. x10 X 5

Q2- Find the percentage of aspirin if you know that the weight of salicylic acid is 1 gm and the practical weight of aspirin is 0.8

A compound contains only Mn and F. The ratio of Mn and F is 1.73 moles of F per 1 mole of Mn.  If the empirical formula is expressed as MnFx, what is the numerical value for x?  If the formula is MnF5, you would enter the number 5.  Please enter a whole number (i.e. round the number to the nearest whole number) and DO NOT include any units.

15. In preparing a certain ointment, a pharmacist used 28.35 grams of zinc oxide instead of the 31.1 grams called for. Calculate the percentage of error on the basis of the desired quantity.

Taking logarithms and antilogarithms is necessary to solve many chemistry problems. For practice, complete the following table, where N is a number. In N log N 22.4 -0.856 0.825