Có 100ml H2SO4 98% (D = 1,84g/ml), người ta muốn pha thể tích H2SO4 trên thành dung dịch H2SO4 20%. Thể tích nước cần để pha loãng là?

Tích của hai số là 576. Nếu thêm 3 đơn vị vào số thứ hai thì tích mới sẽ là 672. Tìm hai số đó

1.He often (write) his letter to his friend in english twice a month 2.She(correspond) with her penpal for three years 3.Last night while i (do) my homework, my brother were watching television 4.All the students (look) forward to spending their summer vacations in the countryside 5.They (visit) their parents on the farm neext summer holiday II, 6._______ have been working hard in the search for a cure for cancer (SCIENCE) 7.I really don't think he has the _____ to đo this job (ABLE)

1 tổ sản xuất dự định may 180 triệu chiếc khẩu trang . khi thực hiện năng suất mỗi ngày tăng thêm 1 triệu khẩu trang so với kế hoạch nên thời gian giảm được 1 ngày và vượt hơn kế hoạch 10 triệu khẩu trang . Tính năng suất và thời gian dự định của tở sản xuất ấy

A.ancient B.faucet C.celebration D.celsius ( chữ c) A.carriage B.baterry C.slavery D.flashflight (chữ a) A.government B.regularly C.garbage(g đầu) D.champagne (chữ g)

Anh chị giúp e mấy câu này vs ạ kèm theo giải thích vs ạ

văn tả món quà sinh nhật mà mẹ mua tăng em

Rewrite the sentences using both ... and. neither ... nor or either ... or. 1 Jeff likes cooking. Tom likes cooking. too. 2 Jane hasn't got any friends. Pauline hasn't got any. either. 3 Lucy has got blue eyes. Tom has got blue eyes. too. 4 Lee doesn't like going to the gym. Karl doesn·t. either. 5 Petra will go to the supermarket. or else I will. 6 Kim doesn't know how to read music. Richard doesn't know. either. 7 My mum is watering the plants. or else my granddad is. 8 Lucy is going to type the letters. or else Martha is going to. 9 Jack is cleaning the attic. or else I am. 10 I haven't got any money. My friends haven·t. either. Fill in the gaps with either or neither. 1.I looked at the dresses. but I didn't buy ............... of them. 2 ............... of her parents let her go out. 3 He'll buy ............ ... a Mercedes or a BMW. 4 My mum has two irons but............... of them works. 5 My sister hates horror films and I don't like them,……………….

Cho tam giác ABC có góc A bằng 60 độ, tỉ lệ góc B : góc C = 2: 3. Bất đẳng thức nào sau đây đúng (1 Point) AC < AB < BC BC < AC < AB AC < BC < AB BC < AB < AC

III. Give the correct form of the verbs in brackets. (2ps) 1. They (play) ................................... in the yard now. 2. Lan’s brother (listen) ................................... to music every morning. 3. We shouldn’t (throw) ................................... the trash on our street. 4. The students (see) ................................... Ngoc Son Temple.