Question #8c957

1 Answer
Apr 11, 2017

Answer:

#"13000mmoles/L"#

Explanation:

Calculate the atomic mass of #Ca^(2+)#
Atomic weight = 40

Calculate the equivalent weight

#"equivalent weight" = "atomic mass"/"valence"#

Valence of #Ca^(2+)# ion is 2

#"equivalent weight" = 40/2 = 20#

1mEq Ca2+ =# 1/1000 xx 20g # = 0.02g = 20mg

2.6mEq Ca2+ = #20mg xx2.6 #= 52mg/ml

#(52mg)/(ml) = (52000mg)/L#

Calculate the number of moles in 52000mg of Ca2+

Convert mg to gram

52000cancel(mg) xx 1g/(100cancel(mg))

#(520g)/40 = 13"moles"#

13moles/L = 13M

#"13"cancel"(moles)/L" xx("1000mmoles")/("1"cancel"(mole)" )= "13000mmoles/L"#