Cho 448 ml CO2 (đktc) vào 100ml dd NaOH 0,25M được dung dịch X . Hãy tính CM của muối trong dd X, biết Vdd không thay đổi.

Bài $ 2 $) Chứng minh rằng nếu $a^{2}$ $ = $ $ bc $ ( với $ a $ $\neq$ $ b $, $ a $ $\neq$ $ c $ ) thì $\frac{a+b}{a-b}$ $ = $ $\frac{c+a}{c-a}$.

Giải tui vs mn ơi Tìm tên nguyên tử y có tổng số hạt trong nguyên tử là 13 . tinhs khối lượng = gam của nguyên tủe

Giúp em trắc ngh vs ạ av em cảm mơn

Bài 8: So sánh: d, $8^{5}$ và $3.4^{7}$ $.8^{5}$ Bài 11: Tính giá trị biểu thức sau: A = 2^30 . 5^7 + 2^13 . 5^27 / 2^27 . 5^7 + 2^10 . 5^27

giúp mình bài này vỡi cần gấp cảm ơn các bn

Ai lm hộ tui ạ Hahahhahahhahahah

1. The keepers feed the lions at 3 pm every day. The lions ________________________________________________. 2. They say that Nam is the brightest student in our school. No other _____________________________________________________. 3. I would prefer you to deliver the sofa on Friday. I would rather_____________________________________________. 4. The bridge was so low that the bus couldn't go under it. It was ___________________________________________________. 5. That was a silly thing to say. What ___________________________________________________. 6. We've run out of tea. There ___________________________________________________. 7. I last saw him when I was a student. I haven't ________________________________________________. 8. Susan was too excited to sleep. Susan was ______________________________________________. 9. Robert has not had a job for two years. Robert has been _________________________________________. 10. They haven’t played tennis for almost two years. They stopped _____________________________________.

Ghi cấu trúc thì present sinple và present continuous.

giúp mình đề thử văn này vs mọi nh