2. Amoxicillin is a highly efficient antibiotic used for the treatment of infections caused by
bacteria.
(15 Points)
H
HN
6
2
H
OH
4
aM
00
OH
(111
(1)
Hello

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?