Which isotope of beanium had the greatest effect on the calculated atomic mass for beanium? Support your answer with evidence in the form of numerical data from your data table. (5 pts)

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

Can someone me with questions 15 to 17 plz.

Name the element in group 17, period 2. (periodic table)