Answer:
Step-by-step explanation:
"25.00 nanoliters of a 1.25 mol/L solution" contains
25.00*10^(-9) L * 1.25 mol/L
= 31.25*10^(-9) mol of Ni
Molar mass of Ni is 58.69 g/mol
So 31.25*10^(-9) mol of Ni
= 31.25*10^(-9) * 58.69 g
= 1834.06*10(-9) g
= 1.834*10(-6) g
= 1.834 ug of Ni