6th+Period+Honors+Chem+Wiki+Continued+PAGE+3

My theoretical yield of beryllium chloride was 10.7 grams. If my actual yield was 4.5 grams, what was my percent yield? Be + 2 HCl  à BeCl2 + H2
 * 1) Four students each measured the mass of one 1.43 g sample four times. The results in the table above indicated that the data collected by ___relect the greatest accuracy and precision.
 * || Trial 1  ||  Trial 2  ||  Trial 3  ||  Trial 4  ||
 * Student A ||  1.43 g  ||  1.52 g  ||  1.47 g  ||  1.42 g  ||
 * Student B ||  1.43 g  ||  1.40 g  ||  1.46 g  ||  1.44 g  ||
 * Student C ||  1.54 g  ||  1.56 g  ||  1.58 g  ||  1.50 g  ||
 * Student D ||  0.86 g  ||  1.24 g  ||  1.52 g  ||  1.42 g  ||