PLEASE ANSWER QUICK What is the percentage by mass of the solution formed when 22.0 grams of HCl is dissolved in 90.0 grams of water?

24.4%
22.48%
19.6%
16.7%

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

Upon decomposition, one sample of magnesium fluoride produced 1.65 kg of magnesium and 2.56 kg of fluorine. a second sample produced 1.32 kg of magnesium. part a how much fluorine (in grams) did the second sample produce?

Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.