Answer:
It falls in Liquid and Solid.
Explanation:
Answer:
M = No.of moles of solute / Volume of solution in litres
HBr: H = 1 x 1 = 1 Br = 1 x 80
Molar mass : 81 g / mol
a. n = 27.7% / 100 =0.277 g / (81 g / mol) = 0.0034 mol
density = 1.24 g/ml ; D= m / v
b. 65.32 ml x 1 L / 1000 mL = 0.065 L
c. M= n / V
= 0.0034 mol / 0.065 L
M= 0.052 mol / L
The molarity of the concentrated HBr solution is 0.052 mol/L
Answer:
0.15 (M) of NaCl
Explanation:
An isotonic solution is defined as the solution having the same osmolarity, or the same solute concentration, as the another solution. If the two solutions are to be separated by any semipermeable membrane, then water will start flowing in equal parts from each solution and also into the other.
In the context, since it is given that the red blood cells exerts the same osmotic pressure as a 0.15 (M) of NaCl solution.
Thus, 0.15 (M) of NaCl is a isotonic solution.
