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tranmuaxuan
2 năm trước
Cho 5,4 gam nhôm vào cốc đựng dung dịch H2SO4 loãng có chứa 49 gam H2SO4 thu được sản phẩm là Al2(SO4)3 và khí hidro ( đktc) a) Chất nào còn dư sau phản ứng ? Dư bao nhiêu gam ? b) Tính thể tích khí H2 ? c) Tính khối lượng Al2(SO4)3 ?
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Mỗi năm hoa đào nở Lại thấy ông đồ già Bày mực Tàu, giấy đỏ Bên phố đông người qua ………………………. Năm nay đào lại nở Không thấy ông đồ xưa Những người muôn năm cũ Hồn ở đâu bây giờ? 1. Nêu tên tác giả và thể thơ của bài thơ nêu trên. 2. Tại sao ở khổ đầu tác giả viết “ông đồ già” nhưng đến cuối khổ thơ lại viết “ông đồ xưa”? 3. Viết đoạn văn khoảng 10 – 12 câu theo hình thức diễn dịch, phân tích để thấy được nỗi nhớ tiếc ngậm ngùi của nhà thơ đối với cảnh cũ người xưa gắn liền với một nét đẹp văn hóa cổ truyền dân tộc được thể hiện ở khổ cuối cùng của bài thơ Ông đồ . Đoạn văn em viết có sử dụng một câu cảm thán. (Gạch chân và chú thích).

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