Tính pH của các dung dịch thu được trong mỗi thí nghiệm sau: a. Hòa tan hoàn toàn 3,65 g HCl vào nước thu được 1 lít dung dịch. b. Hòa tan hoàn toàn 4 g NaOH vào nước thu được 1 lít dung dịch. c. Hòa tan hoàn toàn một lượng H2SO4 vào nước, thu được 100 g dung dịch H2SO4 4,9%. (V = 1 lít). d. Hòa tan hoàn toàn một lượng Ba(OH2) vào nước, thu được 200 g dung dịch Ba(OH2) 1,71%. (V = 1 lít).

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon? a balloon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

When you perform this reaction, what could remain at the end of the reaction? check all that apply. excess reactant aqueous copper chloride excess reactant aluminum oxygen product solid copper carbon dioxide product aqueous aluminum chloride water

Use the drop-down menus to answer each question. which runner finished the 100 m race in the least amount of time? which runner stopped running for a few seconds during the race? at what distance did anastasia overtake chloe in the race?