cho 100 ml dung dịch KOH xM và 100 ml dung dịch hỗn hợp HCL 0,1M và ALCL3 0,2M thu được 11,7g kết tủa. tính x

Pastoral farming is best described as a. a method of raising livestock and moving herds b. an african method of agriculture c. a method of cultivating crops on poor soils d. a common method of desert farming select the best answer from the choices provided a b c d

The bone of a dinosaur and the imprint of a leaf are examples of which kind of fossils? a) index b) body c) amber d) trace

Which of the following is a chemical property of water at 4 c