I think these are the correct answers! I'm currently rechecking them and thought I would post this while I recheck the answers so that way you at least have something to go off of.
Na^+1 and o^-2:
Anion name - Oxide
Compound formula - Nao
Compound name - dioxygen
Na^+1 and N^-3:
Cation name - Sodium
Anion name - Nitride
Compound formula - Na3N (3 is in subscript)
Compound name - Sodium nitride
K^+1 and Br^1:
Cation name - Potassium
Anion name - Bromide
Compound formula - KBr
Compound name - Potassium Bromide
K^+1 and N^-3:
Cation name - Potassium
Anion name - Nitride
Compound formula - KNO2 (2 is in subscript)
Compound name - Potassium Nitride
Li^+1 and I^-1:
Cation name - Lithium
Anion name - lodide
Compound formula - LiI
Compound name - Lithium iodide
Li^+1 and O^-2:
Cation name - Lithium
Anion name - Oxide
Compound formula - Li2O (2 is in subscript)
Compound name - Lithium oxide
Li^+1 and N^-3:
Cation name - Lithium
Anion name - Nitride
Compound formula - Li3N
Compound name - Lithium Nitride
Mg^+2 and Cl^-1
Cation name - Magnesium
Anion name - Dichloride
Compound formula - MgCl2
Compound name - Magnesium dichloride
Answer is 120
Explanation
X is total
if 25% were boys. Then .25x = 40
Divide both sides by .25
X = 160
Total- boys = girl dogs
160-40 = girl dogs
120= girl dogs
Have a nice day. Hope this is helpful.
Answer:
The fraction of the molecule's mass that comes from the element's mass.
Explanation: