Hòa tan 8 gam NaOH (M= 40) vào nước thành một lít dung dịch ở nhiệt độ 25oC có tỉ khối d=1,08 g/ml. Tính nồng độ mol/l (CM), nồng độ % (C%) dung dịch NaOH trên. b. Tính pH của các dung dịch sau: NaOH 0,2M; HCl 0,05M và CH3COOH có nồng độ 0,6 M. Biết hằng số điện ly của dung dịch CH3COOH là Ka = 1,86.10-5

In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added

Suppose you mix one mole of sulfuric acid (h2so4) with 1 mole of sodium hydroxide(naoh). why does the ph of the solution remain below 7? ( explain so i can get better understanding! )

Five different substances are given to you to be dissolved in water. which substances are most likely to undergo dissolution in water? check all that apply. view available hint(s) check all that apply. sodium fluoride, naf octane, c8h18 propanol, ch3ch2ch2oh potassium iodide, ki benzene, c6h6