Answer:
pretty sure they're called groups
24.5 / 14 = 1.75
70 / 16 = 4.375
4.375 / 1.75 = 2.5
empirical formula = N2O5
Explanation:
mole = mass in g/ molecular weight
molecular weight of Al2O3 =2(13) + 3(16) =74g/mol
reacting mass = 27 g
mole = 27/74 = 0.36mol
It is tasteless and colorless.
Answer:
c. 80 g
Explanation:
metal alloy:
wt% = (mass compound/mass alloy)×100
for antimony:
⇒ 16% = (g antimony / g alloy)×100
⇒ 0.16 = g antimony / g alloy
g alloy = 500 g
⇒ (0.16)×(500 g) = g antimony
⇒ g antimony = 80 g