Question

Question #8c957

Answer 1

`"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"`