A wastebasket, designed to fit in the corner of a room, is 16 in. high and has a base in the shape of a quarter circle of radius 10 in. Locate the center of gravity of the wastebasket, knowing that it is made of sheet metal of uniform thickness.

Chemical Tools: Experimentation and Measurement • Recognize the seven basic SI units of measure. • Give the numerical equivalent of the common metric prefixes used with these units. • Express numbers in scientific notation. • Determine the number of significant digits in a measured quantity. • State the result of a calculation involving measured quantities to the correct number of significant digits. • Convert temperatures between the Celsius and Kelvin scales. • Relate density to mass and volume. • Set up and solve problems using dimensional analysis. CHAPTER 1 – The Structure and Stability of Atoms • Give the symbol and name of the first 36 elements of the periodic table. • Identify the group and period to which an element belongs. • Identify the regions of the periodic ta