user-avatar
chuyenn518
2 năm trước
Có 1,2 gam khí H2. a/ Tính số mol khí hiđro. b/ Tính số phân tử H2. c/ Tính số nguyên tử hiđro trong lượng chất trên.
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Are you a screenager? Are you (1)________ glued to the TV, texting your friends,chattingonline, or perhaps trying to move (2)________ another level in one of yourfavourite video games?Well, if you are, you are in the majority.Most teenagers do almost (3)________ electronically. They watch digital TV, listento musicon a digital MP3 player and (4)________ with friends through email, instantmessaging or bymobile phone. Teenagers even do most of their reading online now. When they need help with their homework, it’s often the Internet that they (5)________.Experts from all over the world worry that teenagers’ addiction to technology ishaving an effect (6)________ on their health and on their behaviour. In some countries,teenagers are gettinghelp. In Asia, there are even boot camps (7)________ childrenreceive psychological help and treatment. It’s (8)________ that these types of camps willbecome common in other countries inthe future. 1. a. definitely b. constantly c. hardly d. finally 2. a. in b. off c. out d. up 3. a. everything b. something c. anything d. nothing 4. a. relate b. socialize c. join d. communicate 5. a. carry on b. get off c. turn to d. find out 6. a. either b. all c. both d. whether 7. a. which b. where c. what d. that 8. a. probable b. difficult c. comfortable d. satisfied GIẢI THÍCH CÔNG THỨC GIÚP MÌNH VS Ạ MÌNH CẢM ƠN

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team