Question #091c8

1 Answer
Apr 23, 2017

Answer:

The only tricky part is unit conversion.
#(1L)/(1000mL) * (1 mL) / (1 cm^3) * 250 cm^3 = 0.250L#

Answer is #1.5055^23 # # ions # #Cl^(1-)#

Explanation:

# Ca(Cl)_2 -> Ca^(2+) + 2 Cl^(1-)#
#n = c * V#
#= (1 (mol)/ L) * 0.250 L#
#= 0.250 mol#

#N = N_A * n#
#= (6.022*10^23) (ions) / (mol)* (0.250) mol#
#1.5055^23 # # ions # #Cl^(1-)#