1- what is the concentration of a solution with 8.37 g of table salt in 150 g of solution? 2- what is the concentration of a solution with 31.27 g of hydrogen peroxide in 98 g of solution?

3- how many grams of solute are in 163 g of a 25.7% solution?

4- how many grams of solute are in 96 g of a 6.8% solution?

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)