Cho 100 ml dung dịch H2 SO4 20% D bằng 1,137 gam trên ml vào 400 gam dung dịch BaCl2 5,2% tạo ra được a gam kết tủa A và dung dịch b Tính khối lượng của kết tủa a và C phần trăm của dung dịch B

What royal scientist used the 29th day of frozen vapor to encounter elements for mastering new culinary creations?

Amixture that has two or more substances that are spread out evenly is called a. compound b. heterogeneous c. substance d. homogeneous

Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.