Read "the ozone hole" and answer the question below.

use examples from the article to explain one positive and one negative effect that chemistry has had on society.

What phase of matter has particles that are held together but can flow past each other and takes the shape of a container, filling it from the bottom up?

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98

Scientists are often interested in knowing the molar heat of combustion – the heat released during the combustion of one mole of a substance. use the periodic table to find molar masses. how many moles of ethanol are present in the sample?