What is the mass number of an atom that has 12 neutrons and 11 protons?

If 0.0106 g of a gas dissolves in 0.792 L of water at 0.321 atm, what quantity of this gas (in grams) will dissolve at 5.73 atm?

True or false? To increase the concentration of a solution, add more solute.

What is the correct symbol of an ion containing 17 protons, 20 neutrons and 18 electrons

How many different naturally-occurring common amino acids are there?

Compare √42 and √58 plotted on the number line. What is the approximate difference in tenths between the two values?

If you change the state of something, say, liquid to solid, is it a physical or chemical change?

What type of calorimeter would be best to use if you wanted to measure the heat that is released when gasoline is burned?

Tina has a sample of gaseous water at a temperature of 400 C and a pressure of 4 atm. If Tina increases the pressure to 200 atm, will the gaseous water liquefy? Why or why not?

Label the molecular shape around each of the central atoms in the amino acid glycine. hint

Which has more atoms, 2moles of carbon or 2 moles of aluminum