CHEM 111 Midterm: 110_Fall_2015_Key_I_Whelan
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Report the follow operations to the correct number of significant figures: 36. 456 + 74. 2, 18. 4 x (1. 000x10-3, 2. 01(23. 56-2. 3) A piece of copper has a volume of 740l. What is the mass of the same in units of grams. 9. 5 x 1021 atoms cu = 1 g cu. No need to do the calculation just set up the correct dimensional analysis conversions you may not need to fill in all the boxes. Give the correct formula for the following polyatomic ions: 10 points: phosphide, phosphate, sulfite, chromate, cyanide. Neutrons: what is the symbol for the element, the atom bears a charge of +3, then number of electrons is: The following questions pertain to the periodic table given at the front of this exam: A certain element consists of two stable isotopes: Balance the following chemical equations using the smallest possible integer coefficients. __cl2 (g: write a balanced equation for the complete oxidation reaction that occurs when ethanol (c2h5oh) burns in air.
