Is 2.0 x 10 to the -9th power an option
Answer:
The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.
Answer:
1 - 3
Explanation:
- Look to see where metals are on the periodic table then look at what group they are in. The group tells you the number of valence electrons. Ex. 1A has one valence electron.
- Hope this helped! If you need a further explanation please let me know.
Answer:
I guess you just answered a lot of questions
Explanation:
Thanks for the points btw :)
Answer:
Explanation:
Total pressure = partial pressure of nitrogen + partial pressure of water vapour
partial pressure of water vapour = 18.7 mm of Hg
760 mm of Hg = 1 atm
18.7 mm of Hg = 18.7 / 760 atm
= .0246 atm
Total pressure = partial pressure of nitrogen + partial pressure of water vapour
Putting in the values in atm
1.72 atm = partial pressure of nitrogen + .0246 atm
partial pressure of nitrogen = 1.72 atm - .0246 atm
= 1.6954 atm
= 1.70 atm
partial pressure of nitrogen = 1.70 atm .
