man

juice

1. How many

2. How much

3. How many

4. How many

5. How much

some cakes

on

vacation

between

CABBAGES

2. She is listening to music in the room.

3. My sister is reading books in her room

4. My mother is working in the garden now.

5. Nga and Phuong are watching TV now.

6. What is she doing at the moment? She is cooking in the dinner.

7. Where are you going now? I am going to the post office.

8. What are the students doing in the class now? They are talking.

9. He is doing his housework now.

Thủy phân hoàn toàn 13,02 gam tripeptit mạch hở X (được tạo nên từ hai α -amino axit có cùng công thức dạng H 2 NC x H y COOH ) bằng dung dịch NaOH dư, thu được 19,14 gam muối. Mặt khác thủy phân hoàn toàn 13,02 gam X bằng dung dịch HC1 dư, thu được m gam muối. Giá trị của m là

A. 19,59

B. 21,75

C. 15,18

D. 24,75