WILL GIVE BRAINLIEST AND 20 POINTS! Barium hydroxide, often used to titrate weak organic acids, is obtained as the octahydrate, Ba(OH)2 * 8 H2O. What mass of Ba(OH)2 * 8 H2O would be required to make 500 mL of a solution that is 0.1500 M hydroxide ions? [hint: calculate the molar mass of barium hydroxide octahydrate].

Barium hydroxide, often used to titrate weak organic acids, is obtained as the octahydrate. Ba(OH)2 • 8H2O. What mass of Ba(OH)2 • 8H2O would be required to make 500.0 mL of a solution that is 0.1500 M in hydroxide ions?

Step-by-Step Solution:

Solution 70P:

Here we have to calculate the mass  of Ba(OH)2 • 8H2O would be required to make 500.0 mL of a solution that is 0.1500 M in hydroxide ions.

Step 1

Given:

Volume of Ba(OH)2 • 8H2O = 500.0 mL or 0.5000 L

Concentration of OH- ion = 0.1500 M

Molecular mass of Ba(OH)2 • 8H2O = 315.4 g

Thus the mass can be calculated as,

0.500L 

= 11.83 g Ba(OH)2.8H2O

Thus the mass of Ba(OH)2 • 8H2O is found to be 11.83 g .

a- all cells come from pre-existing cells

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.