Question

What is the electron configuration for He

Directions: Show all work in the spaces provided. Place a "box" around final numerical answers. Round all answers to two significant figures Let a-4.2 x 109, b-765, and C-0.45. Perform each calculation ab 1. a+b- 2. A cylinder is used in a shop to hold acetylene gas. The foreman wishes to monitor the amount of gas used by the crew, so he weighs the cylinder at the end of each work day. Shown in the chart are the results of those measurements. Plot these points on the graph, draw a best-fit straight line on the graph, and find the slope of that line. Discuss the meaning of your result. time mass days 2 3 4 48.2 42.6 27.8 20.8 4 ime (days)

Answer 1

e= o.115 2. eo.h5广 に1,59 X101 1.59 x1013 at 6 = C4.axm) t(165)ニム20000 t6G-Q.2oxioT 235-thao 지01 子45. = 0 . 000000 18114 1. 82X10 孑! cu 4.3 X101