Question

Write the formula for the following and calculate the molecular mass for each one of them.
1). Potassium hydroxide
2). Sodium bicarbonate
3). Calcium carbonate
4). Magnesium chloride
5). Sodium chloride

Answer 1

potassium hydroxide(KOH)
K=19,O=16,H=1
MOLECULAR MASS:56
sodium bicarbonate(NaHCO3)
Na=23,H=1,C=12,O=16*3=48
MOLECULAR Mass:84
calcium carbonate (CaCO3)
Ca=40,C=12,O=16*3=48
MOLECULAR mass:100
magnesium chloride(MgCl2)
Mg=24,Cl÷35.5*2
MOLECULAR mass:95.21
sodium chloride (NaCl)
Na=23 Cl=35.5
MOLECULAR mass:58.5

Answer 2

here is the answer hope it's helpful