Question 11 (3 points) The table below shows the initial masses of four stars.
Name of Star
Star Star Star Star
1 2 3 4
Initial mass of star
(in Solar mass)
9
0.9
5
0.3
Which of these stars will stay on the main sequence for the shortest time?
Star 1
Star 4
Star 3
Star 2

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

Based on its chemical properties, identify the position of each chemical family on the periodic table.