<span>An acidic solution has only hydrogen ions and a basic solution has only hydroxide ions </span>statement correctly distinguishes between an acidic and a basic solution
Answer:
4.52 mol/kg
Explanation:
Given data:
Mass of lithium fluoride = 22.1 g
Mass of water = 188 g
Molality = ?
Solution:
Molality:
It is the number of moles of solute into kilogram of solvent.
Formula:
Molality = number of moles of solute / kilogram solvent
Mathematical expression:
m = n/kg
Now we will convert the grams of LiF into moles.
Number of moles = mass/ molar mass
Number of moles = 22.1 g/ 26 g/mol
Number of moles = 0.85 mol
Now we will convert the g of water into kg.
Mass of water = 188 g× 1kg/1000 g = 0.188 kg
Now we will put the values in formula.
m = 0.85 mol / 0.188 kg
m = 4.52 mol/kg
If I am correct the answer would be iron and nickel.
A biomedical device is a device that could help save the life of a person or to improve his quality of life, some examples are MRI's, artificial knees and joints or pacemakers.
an erosive process or erosion
erosion is when a rock is changed through the weather
