Đáp án:
Giải thích các bước giải:
Ta có : ph= 10⇒pOH=14-10=4
⇒[OH-]=10^-4M
⇒nOH=[OH-].V=10^-4.0,3=3.10^-5
NaOH→Na++OH-
3.10^-5 ← 3.10^-5
⇒mnaoh=40.3.10^-5=12.10^-4=0,0012g
●Đáp án: bạn xem trên hình nha
/𝓣𝓱𝓪𝓽 𝓷𝓾𝓬 𝓬𝓾𝓸𝓲 𝓴𝓱𝓲 𝓮𝓶 𝓵𝓪 𝓬𝓸𝓷 𝓰𝓪𝓲/ /𝓛𝓪𝓲 𝓭𝓮𝓶 𝓵𝓸𝓷𝓰 𝓽𝓱𝓾𝓸𝓷𝓰 𝓷𝓱𝓸 𝓶𝓸𝓽 𝓷𝓾 𝓷𝓱𝓪𝓷/ Viết lại dòng trên , đúng font , tone xám/đen Cali cũng đc , nhưng có tâm và tone xám /đen
1. complete the sentences with there is or there are 1. ............ 25 students in the class 2. ......a big wardrobe in my sister's room 3. .......a computer and a tv in my room 4. ....... good programs on television 5 . ......... some furniture in my bedroom 6. .......... four eggs in the fridge 7. ........ a lot of water in the bottle 8. .......... no paper in the printer 2 . complete the questions with Is there or Are there. Then write short anwers 1. .... ......many shops in your town ? Yes, ............. 2. .......... a post office near here ? No, ........... 3. ........... a table and chairs in the kitchen ? Yes, ........ 4. .......... any tress in your garden? No, ............... 5. .......... a book under the table ? No, .......... 6. .......... any girls in the class ? Yes,.......... 7. ............ any coffee in the cup? No,...................... .8. ........... a lot of children in the yard? No,........ 3. Use the words to write positive (+) and negative (-) sentences and questions (?) with there is/ there are 1. a bath in the bathroom (?) ....………............................... 2. some shops near our new house (+) ........................................ .3. a school in the neighbourhood (?) ............................... 4. a television in my bedroom (-) .......................................... 5. any cupbroads in the dining room (?) .................………………......... 6. a swimming pool behind the house (+) ....…………………………… 7. any flowers in the garden(-) ...................................... 8. a lot of posters on the wall(+) ...........................………………
giúp mk với!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Giúp em với em cảm ơn ạ. Giải đầy đủ ạ
cần đáp án đúng thôiiiiiiiiiiiiiii
Calli Blink NL: Hóng mí pác idollllllll
lam dùm ạ ................................. <3
E còn 40đ cuối cùng :((((( Giúp em với ạ :<<<<<
mot khu vườn hnc co chu vi bang 100 m, chieu rong bang 2/3 chieu dai tinh dien tich khu vươn do
bai1:rút gọn a, (2x + 3)^2 + (2x-3)^2 -2 (4x^2 -9) b,(x+3)^3 + (x-2)^3 + x^3 -3x (x+2) (x-2) bài 2:tính a,(6x^2 +y^2) (y^2 - 6x^2) b, (4x + 5) (16x^2 - 20x + 25)
Loga.vn - Cộng Đồng Luyện Thi Trực Tuyến