Question

43. 100g of hydrofluoric acid is dissolved in a 500mL solution. What is the molarity of the solution?

Answer 1

concentration is molarity (in case if u didnt know)
so
conc= mole/dm3
dm3 is the unit of volume that is to be used in this formula
you are given mass
you know the compound thus can calculate its Molecular mass using periodic table
then
mole = mass/ Molecular mass
this way you will find mole
so
now you have volume converted to dm3
and you calculated mole
so use concentration formula above & get your final answer of molarity (or concentration, whatever u call it)

Answer 2

Btw @Cassandra_Lea_96, 1 dm3 = 1 L

Answer 3

thank you guys =)

Answer 4

no problem :)