1) period
2) the answer is D) I because they are in the same column
3) B)Ge because they are in the same column
4) A) Al because they are in the same column (share same characteristics)
5) D) they have the same number of valence electrons
6) D) nonmetals
While the Moon and Mercury have relatively small volcanoes, those on Venus, Earth and Mars are large and numerous. Earth's volcanoes are still active and Venus' may be, but scientists debate whether Mars' volcanic activity has finished.
The atomic mass is the sum of the protons and neutrons in an atom
Answer:
4.9 atm
Explanation:
convert 16.0g of CH4 to moles
16.0 g CH4 x 1 mol CH4/16.0 g CH4 = 1.00 mol of methane
convert the temp into Kelvins: 27 + 273 = 300.K
PV = nRT
(P) (5.0 L) = (1.00 mol) (0.0821 L atm/mol K) (300.K)
P = 4.9 atm
