1. What is the volume of 4.50 moles of propane gas (C3H8 ) at STP?
2. How many moles of oxygen gas are there in 13.5 L of
oxygen gas at STP?
3. What volume (in L) will be occupied by 0.0035 moles of
chlorine gas at STP?

thanks so much

1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false

How do you convert celsius to kelvins

Type the correct answer in each box.balance the chemical equation.__ n203 ➡️ __ n2 +__ o2