8-
SO
Streek
A.
1 mol Co
4.00 x 1023 atoms Cox
6.02 x 1023 atoms Co
6.02 x 1023 atoms Co
B. 4.00 x 1023 atoms Cox
1 mol Co
Which of the following dimensional analysis setups will correctly
convert 4.00x1023atoms of cobalt to moles of cobalt? How many
moles of colbalt are there?
setup A: 0.664 mol Co
setup B: 2.41x1047mol Co
setup B :0.664 mol Co
setup A 2.41*10*mol Co
the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .
answered: Guest
the answer is na (sodium)
answered: Guest
Coal i believe hope this
answered: Guest
You use the atomic number to find out how many protons and neutrons there are in the atom. you use the atomic mass to find out how many protons and electrons there are in the atom.
How is energy related to the change of state represented by the model? atoms gain energy as a solid changes to a liquid. atoms gain energy as a solid changes to a gas. atoms lose energy as a solid changes to a liquid. atoms lose energy as a solid changes to a gas.
In order to complete this lab. you will need to be familiar with some common chemistry terms. complete the chemical change puzzle and list the relevant terms and their meaning below a. rectant b. product c. supernate
Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.