Answers only please 100pts and brainliest. you will be reported for wrong answers.

1. 42.75 grams KOH

2. Add 150ml of water to the 250ml containing 9.8 grams 42.75 grams KOH

Explanation

1. moles KOH in 500ml in 1.5M solution = 0.500L x 1.5 mole/Liter = 0.75 mol KOH

grams KOH in 0.75 mole = 0.75 mole x 57 grams/mole = 42.75 grams KOH

2. formula weight H₃PO₄ = 98 grams/mole

9.8 grams H₃PO₄ in 250ml H₂O => 9.8g/98g·mole⁻¹/0.250Liters = 0.40M in H₃PO₄

Final volume of 0.25M H₃PO₄ solution = (0.40M)(250ml)/(0.25M) = 400ml

∴ Add 400ml - 250ml = 150ml of water to the 250ml of 0.40M H₃PO₄ solution => 400ml of 0.25M H₃PO₄ solution.

"hydrogen bonding is the attraction of h atoms in the water molecule (slight + charge) to o atoms in a neighboring water molecule (slight - charge); it is a weak interatomic force. but it is still strong enough to the water molecules "stick" together."

just did the assignment and the answer was #1 +2 n