Đổi 200ml =0,2l
Số mol của $ZnSO_{4}$ là :
n=$\frac{m}{M}$ =$\frac{16,1}{161}$ = 0,1(mol)
nồng độ mol của dd
$C_{M}$=$\frac{n}{Vdd}$ =$\frac{0,1}{0,2}$ = 0,5 (M)
Đ/s $C_{M}$ =0,5(M)
Judy liked the full moon festival a lot. The featival is calebrated in mid fall
if /you/ obit /you /able/ get/ out /seat/ and walk / cabin
tính a) a^6-b^3 b) x^4-y^4 c) (x/3-6y) ³
Vẽ về đề tài mái trường mến yêu (ra chơi,.. đều được). Có màu. Trên giấy. Có nét vẽ. Đẹp.
) They play volleyball every week. =>. 2) He watches TV. => 3) John is nice. =>………………………………………………………………………………… 4) I am from Spain. =>………………………. 5) This car makes a lot of noise. => 6) Steve draws nice pictures. => 7) I like computer games. => 8) We are from Greece. =. 9) You wear pullovers. = 10) They speak English. = Giúp mình nha !
Các câu còn lại đây nhé, giải thích tại sao lại chọn nha 3. He’s amazing, he ________ speak five languages, including Chinese. * can can't could couldn't 4. I looked everywhere for my glasses but I ________ find them anywhere. * can can't could couldn't 5. She’s seven years old, but she ________ read yet. Her parents are getting her extra lessons. * can can't could couldn't 6. I read the book three times, but I ________ understand it. * can can't could couldn't 7. James ________ speak Japanese when he lived in Japan, but he’s forgotten most of it now. * can can't could couldn't 8. I ________ understand the chapter we had to read for homework. It was so difficult. * can can't could couldn't 9. I ________ lift this box – it’s too heavy! Would you help me? * can can't could couldn't 10. Lucy ________ make it to our meeting after all. She’s stuck in traffic. * can can't could couldn't
Đặt ẩn phụ để phân tích thành nhân tử
Tính : 7,35 phút x 6 = ... (Help)
Mn giúp ạ và giải thích lun nha Cảm ơn
Giải chi tiết giúp mình bài 1 bài 3 và bài 4 với.K cần làm bài 2.Ai làm nhanh nhất mik cho 5 sao nha
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