What would be the molarity of a solution made from 86.5 g Ca(OH)2in 200.0 ml of water?

5.84 M

Explanation:

First you have to convert grams of Ca(OH)2 to moles,

since molar mass is 74.093 g/mol, we divide the amount you have by the molar mass: (86.5 g)/(74.093 g/mol)= 1.1675 moles of Ca(OH)2

Then, knowing molarity is (moles/ volume in liters), we have to convert 200 mL to liters, which is 0.200 L

Putting it together, molarity = (1.1675/0.200) M= 5.84 M

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current