Q. What is the mass in grams of one mole of any substance know as
A. Molar Mass
Yes. it is COOH. C=O is carbonyl and OH is hydroxyl
Answer:
4.02g of Na2CO3⸱2H2O must be added completing the volume of the solution to 100mL
Explanation:
A 3%(w/v) solution contains 3g of solute (In this case, Na2CO3) in 100mL of solution.
Assuming we require 100mL of solution we must add 3g of Na2CO3. The reactant that is available is its dihydrate, with molar mass:
106g/mol + 2*MW H2O
106g/mol + 2*18g/mol = 142g/mol
That means the mass of Na2CO3.2H2O that must be added to prepare the solution is:
3g Na2CO3 * (142g/mol Na2CO3.2H2O / 106g/mol Na2CO3) =
<h3>4.02g of Na2CO3⸱2H2O must be added completing the volume of the solution to 100mL</h3>
Answer:
5.54 g/cm3
Explanation:
Since density is mass divided by volume, replace mass and volume with 55.4 g and 10 cm3. Then, divide it and get the answer, which is 5.54 g/cm3.