Có các chất sau: CU(OH)2;NaOH;Ba(OH)2;.hãy cho biết những bazơ nào : a/tác dụng được với dung dịch HCl?

b/đổi màu qùy tím thành xanh ?

c/bị nhiệt phân hủy ?

d/tác dụng với CO2?

Hãy viết phương trình hóa học
(Có anh chị nào giải giúp em với em cảm ơn ạ )

Sarah wants to know where in her garden chamomile would grow the best. she thinks chamomile will grow best in the corner of the garden that gets the most sunlight. to test her hypothesis, she decides to plant several groups of chamomile in her garden as an experiment. which of the following variables will sarah need to measure to know which group of plants grew best? a. the location of the plants b. the type of plants c. the height of the plants d. the amount of water she gives the plants

How many molecules are found in 1.32 mol of nacl?

Calculate the molarity of each of the following solutions. part a) 0.12 mol of lino3 in 5.5 l of solution part b) 60.7 g c2h6o in 2.48 l of solution part c) 14.2 mg ki in 100 ml of solution