4. Ethanol has a molecular formula of CH3CH2OH
a. What is the formula mass of ethanol?
b. What is the mass of 1.000 moles of ethanol?
C. What is the mass of 0.563 moles of ethanol?

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 many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work

May someone me with these science questions