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<title>Selfomy Hỏi Đáp - Hóa học lớp 8 - Các câu hỏi gần đây</title>
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<item>
<title>thuộc về electron của Cobalt</title>
<link>https://selfomy.com/hoidap/476481/thu%E1%BB%99c-v%E1%BB%81-electron-c%E1%BB%A7a-cobalt</link>
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<pubDate>Sun, 22 Dec 2024 01:58:26 +0000</pubDate>
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<item>
<title>Nêu các thành phần của thuốc lá điện tử</title>
<link>https://selfomy.com/hoidap/474196/n%C3%AAu-c%C3%A1c-th%C3%A0nh-ph%E1%BA%A7n-c%E1%BB%A7a-thu%E1%BB%91c-l%C3%A1-%C4%91i%E1%BB%87n-t%E1%BB%AD</link>
<category>Hóa học lớp 8</category>
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<pubDate>Thu, 01 Feb 2024 22:00:36 +0000</pubDate>
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<item>
<title>trình bày thành phần của không khí</title>
<link>https://selfomy.com/hoidap/472619/tr%C3%ACnh-b%C3%A0y-th%C3%A0nh-ph%E1%BA%A7n-c%E1%BB%A7a-kh%C3%B4ng-kh%C3%AD</link>
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<pubDate>Sun, 22 Oct 2023 16:10:42 +0000</pubDate>
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<item>
<title>giúp mik  thứ 5 nộp</title>
<link>https://selfomy.com/hoidap/471346/gi%C3%BAp-mik-th%E1%BB%A9-5-n%E1%BB%99p</link>
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<pubDate>Tue, 10 Oct 2023 21:33:11 +0000</pubDate>
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<item>
<title>sự bay hơi là gì ? cho ví dụ</title>
<link>https://selfomy.com/hoidap/471369/s%E1%BB%B1-bay-h%C6%A1i-l%C3%A0-g%C3%AC-cho-v%C3%AD-d%E1%BB%A5</link>
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<pubDate>Tue, 10 Oct 2023 21:32:20 +0000</pubDate>
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<item>
<title>Cho 1 số vd về kim loại + dd axit --&gt; muối + H2</title>
<link>https://selfomy.com/hoidap/471065/cho-1-s%E1%BB%91-vd-v%E1%BB%81-kim-lo%E1%BA%A1i-dd-axit-mu%E1%BB%91i-h2</link>
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<pubDate>Mon, 25 Sep 2023 22:54:12 +0000</pubDate>
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<item>
<title>Phân loại và gọi tên các chất sau</title>
<link>https://selfomy.com/hoidap/470852/ph%C3%A2n-lo%E1%BA%A1i-v%C3%A0-g%E1%BB%8Di-t%C3%AAn-c%C3%A1c-ch%E1%BA%A5t-sau</link>
<category>Hóa học lớp 8</category>
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<pubDate>Mon, 11 Sep 2023 19:03:00 +0000</pubDate>
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<item>
<title>Viết CTHH các chất có tên gọi sau</title>
<link>https://selfomy.com/hoidap/470853/vi%E1%BA%BFt-cthh-c%C3%A1c-ch%E1%BA%A5t-c%C3%B3-t%C3%AAn-g%E1%BB%8Di-sau</link>
<category>Hóa học lớp 8</category>
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<pubDate>Mon, 11 Sep 2023 19:02:58 +0000</pubDate>
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<item>
<title>Tính số mol nguyên tử có trong 9. 10²³ nguyên tử oxi?</title>
<link>https://selfomy.com/hoidap/470854/t%C3%ADnh-s%E1%BB%91-mol-nguy%C3%AAn-t%E1%BB%AD-c%C3%B3-trong-9-10%C2%B2%C2%B3-nguy%C3%AAn-t%E1%BB%AD-oxi</link>
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<pubDate>Mon, 11 Sep 2023 19:02:57 +0000</pubDate>
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<item>
<title>Kể tên và viết công thức hóa học các đơn chất kim loại và đơn chất phi kim ở thể rắn.</title>
<link>https://selfomy.com/hoidap/469474/t%C3%AAn-vi%E1%BA%BFt-c%C3%B4ng-th%E1%BB%A9c-c%C3%A1c-%C4%91%C6%A1n-ch%E1%BA%A5t-kim-lo%E1%BA%A1i-%C4%91%C6%A1n-ch%E1%BA%A5t-phi-kim-th%E1%BB%83-r%E1%BA%AFn</link>
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<pubDate>Wed, 09 Aug 2023 09:39:16 +0000</pubDate>
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<item>
<title>Trong các trường hợp dưới đây. Trường hợp diễn ra sự biến đổi vật lý, trường hợp nào diễn ra biến đổi hoá học</title>
<link>https://selfomy.com/hoidap/468147/trong-tr%C6%B0%E1%BB%9Dng-d%C6%B0%E1%BB%9Bi-tr%C6%B0%E1%BB%9Dng-di%E1%BB%85n-bi%E1%BA%BFn-tr%C6%B0%E1%BB%9Dng-n%C3%A0o-di%E1%BB%85n-bi%E1%BA%BFn-%C4%91%E1%BB%95i-ho%C3%A1</link>
<category>Hóa học lớp 8</category>
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<pubDate>Tue, 18 Jul 2023 14:35:24 +0000</pubDate>
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<item>
<title>Hóa học lý thuyết - 1</title>
<link>https://selfomy.com/hoidap/467907/h%C3%B3a-h%E1%BB%8Dc-l%C3%BD-thuy%E1%BA%BFt-1</link>
<category>Hóa học lớp 8</category>
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<pubDate>Mon, 10 Jul 2023 15:14:04 +0000</pubDate>
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<item>
<title>Các bước pha loãng H2SO4 đặc, tại sao không được bỏ nước vào H2SO4 trước?</title>
<link>https://selfomy.com/hoidap/467538/c%C3%A1c-b%C6%B0%E1%BB%9Bc-pha-lo%C3%A3ng-h2so4-%C4%91%E1%BA%B7c-t%E1%BA%A1i-sao-kh%C3%B4ng-%C4%91%C6%B0%E1%BB%A3c-n%C6%B0%E1%BB%9Bc-h2so4-tr%C6%B0%E1%BB%9Bc</link>
<category>Hóa học lớp 8</category>
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<pubDate>Mon, 26 Jun 2023 14:35:15 +0000</pubDate>
</item>
<item>
<title>Vì sao Al, Fe, Cr không tác dụng với H2SO4, HNO3 đặc nguội</title>
<link>https://selfomy.com/hoidap/467502/v%C3%AC-sao-al-fe-cr-kh%C3%B4ng-t%C3%A1c-d%E1%BB%A5ng-v%E1%BB%9Bi-h2so4-hno3-%C4%91%E1%BA%B7c-ngu%E1%BB%99i</link>
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<pubDate>Sat, 24 Jun 2023 22:25:46 +0000</pubDate>
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<item>
<title>Hóa dưới 6.5 có đc hsg không ạ</title>
<link>https://selfomy.com/hoidap/466621/h%C3%B3a-d%C6%B0%E1%BB%9Bi-6-5-c%C3%B3-%C4%91c-hsg-kh%C3%B4ng-%E1%BA%A1</link>
<category>Hóa học lớp 8</category>
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<pubDate>Thu, 18 May 2023 16:13:26 +0000</pubDate>
</item>
<item>
<title>Giúp em với ạ</title>
<link>https://selfomy.com/hoidap/465772/gi%C3%BAp-em-v%E1%BB%9Bi-%E1%BA%A1</link>
<category>Hóa học lớp 8</category>
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<pubDate>Sun, 05 Mar 2023 15:07:56 +0000</pubDate>
</item>
<item>
<title>Cho cách chất có CTHH sau:CuO,Ca,He,Na2O,FeO,SiO2,Al2O3,Na2CO3,P2O5,C4H10</title>
<link>https://selfomy.com/hoidap/465720/cho-c%C3%A1ch-ch%E1%BA%A5t-cthh-sau-cuo-na2o-feo-sio2-al2o3-na2co3-p2o5-c4h10</link>
<category>Hóa học lớp 8</category>
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<pubDate>Fri, 24 Feb 2023 22:51:48 +0000</pubDate>
</item>
<item>
<title>Làm 2 câu a,b</title>
<link>https://selfomy.com/hoidap/465647/l%C3%A0m-2-c%C3%A2u-a-b</link>
<category>Hóa học lớp 8</category>
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<pubDate>Sun, 05 Feb 2023 13:58:02 +0000</pubDate>
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<item>
<title>Làm 2 câu a,b</title>
<link>https://selfomy.com/hoidap/465648/l%C3%A0m-2-c%C3%A2u-a-b</link>
<category>Hóa học lớp 8</category>
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<pubDate>Sun, 05 Feb 2023 13:57:57 +0000</pubDate>
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<title>Làm 2 câu a,b</title>
<link>https://selfomy.com/hoidap/465649/l%C3%A0m-2-c%C3%A2u-a-b</link>
<category>Hóa học lớp 8</category>
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<pubDate>Sun, 05 Feb 2023 13:57:54 +0000</pubDate>
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<item>
<title>Làm 2 câu a,b</title>
<link>https://selfomy.com/hoidap/465650/l%C3%A0m-2-c%C3%A2u-a-b</link>
<category>Hóa học lớp 8</category>
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<pubDate>Sun, 05 Feb 2023 13:57:53 +0000</pubDate>
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<item>
<title>Điểm trung bình môn</title>
<link>https://selfomy.com/hoidap/465583/%C4%91i%E1%BB%83m-trung-b%C3%ACnh-m%C3%B4n</link>
<category>Hóa học lớp 8</category>
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<pubDate>Mon, 09 Jan 2023 23:00:29 +0000</pubDate>
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<item>
<title>điểm môn hóa</title>
<link>https://selfomy.com/hoidap/465570/%C4%91i%E1%BB%83m-m%C3%B4n-h%C3%B3a</link>
<category>Hóa học lớp 8</category>
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<pubDate>Sun, 08 Jan 2023 12:52:11 +0000</pubDate>
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<item>
<title>Môn hoá giữa kì 1 mình được 4,5 ,cuối kì 1 đc 1.92 có cách nào để kéo môn hoá lên tb không ạ</title>
<link>https://selfomy.com/hoidap/465549/m%C3%B4n-ho%C3%A1-gi%E1%BB%AFa-m%C3%ACnh-%C4%91%C6%B0%E1%BB%A3c-cu%E1%BB%91i-%C4%91c-92-c%C3%A1ch-n%C3%A0o-k%C3%A9o-m%C3%B4n-ho%C3%A1-l%C3%AAn-kh%C3%B4ng</link>
<category>Hóa học lớp 8</category>
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<pubDate>Fri, 06 Jan 2023 21:10:50 +0000</pubDate>
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<title>cho em hỏi là điểm hoá của em đc 3,2 học kì 1 thì có bị thi lại ko</title>
<link>https://selfomy.com/hoidap/465400/cho-em-h%E1%BB%8Fi-l%C3%A0-%C4%91i%E1%BB%83m-ho%C3%A1-c%E1%BB%A7a-em-%C4%91c-3-2-h%E1%BB%8Dc-k%C3%AC-1-th%C3%AC-c%C3%B3-b%E1%BB%8B-thi-l%E1%BA%A1i-ko</link>
<category>Hóa học lớp 8</category>
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<pubDate>Sat, 31 Dec 2022 21:25:22 +0000</pubDate>
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<item>
<title>Âm phản xạ là j</title>
<link>https://selfomy.com/hoidap/465141/%C3%A2m-ph%E1%BA%A3n-x%E1%BA%A1-l%C3%A0-j</link>
<category>Hóa học lớp 8</category>
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<pubDate>Sun, 25 Dec 2022 23:14:40 +0000</pubDate>
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<item>
<title>kể trườn hợp liên quan đến sự bay hơi</title>
<link>https://selfomy.com/hoidap/464861/k%E1%BB%83-tr%C6%B0%E1%BB%9Dn-h%E1%BB%A3p-li%C3%AAn-quan-%C4%91%E1%BA%BFn-s%E1%BB%B1-bay-h%C6%A1i</link>
<category>Hóa học lớp 8</category>
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<pubDate>Sun, 18 Dec 2022 18:49:52 +0000</pubDate>
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<item>
<title>1 amu bằng bao nhiêu gam</title>
<link>https://selfomy.com/hoidap/464737/1-amu-b%E1%BA%B1ng-bao-nhi%C3%AAu-gam</link>
<category>Hóa học lớp 8</category>
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<pubDate>Wed, 14 Dec 2022 20:19:55 +0000</pubDate>
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<item>
<title>Ví dụ về sự nóng chảy</title>
<link>https://selfomy.com/hoidap/464434/v%C3%AD-d%E1%BB%A5-v%E1%BB%81-s%E1%BB%B1-n%C3%B3ng-ch%E1%BA%A3y</link>
<category>Hóa học lớp 8</category>
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<pubDate>Sat, 26 Nov 2022 12:02:03 +0000</pubDate>
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<title>Hãy chọn biết tại sao nguyên tử Na lại có khuynh hướng trở thành ion dương Na+</title>
<link>https://selfomy.com/hoidap/464229/h%C3%A3y-ch%E1%BB%8Dn-bi%E1%BA%BFt-sao-nguy%C3%AAn-l%E1%BA%A1i-khuynh-h%C6%B0%E1%BB%9Bng-tr%E1%BB%9F-th%C3%A0nh-ion-d%C6%B0%C6%A1ng</link>
<category>Hóa học lớp 8</category>
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<pubDate>Sun, 13 Nov 2022 22:21:44 +0000</pubDate>
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<title>Khối lượng phân tử và hoá trị của muối Magie</title>
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<pubDate>Fri, 11 Nov 2022 15:38:54 +0000</pubDate>
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<item>
<title>Hạt nhân nguyên tử</title>
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<pubDate>Fri, 11 Nov 2022 15:38:53 +0000</pubDate>
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<title>Hãy cho biết nguyên tử Mg nặng hay nhẹ hơn bao nhiêu lần so với nguyên tử Si</title>
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<pubDate>Mon, 07 Nov 2022 21:06:46 +0000</pubDate>
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<title>Nguyên tử X có tổng số hạt cơ bản là 52. Trong đó số hạt mang điện nhiều hơn số hath không mang điện là 16.</title>
<link>https://selfomy.com/hoidap/464074/nguy%C3%AAn-t%E1%BB%95ng-h%E1%BA%A1t-b%E1%BA%A3n-trong-mang-%C4%91i%E1%BB%87n-nhi%E1%BB%81u-hath-kh%C3%B4ng-mang-%C4%91i%E1%BB%87n</link>
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<pubDate>Fri, 04 Nov 2022 20:55:43 +0000</pubDate>
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<item>
<title>Viết công thức hoá học và tính phân tử khối của khí ozone</title>
<link>https://selfomy.com/hoidap/463967/vi%E1%BA%BFt-c%C3%B4ng-th%E1%BB%A9c-ho%C3%A1-h%E1%BB%8Dc-v%C3%A0-t%C3%ADnh-ph%C3%A2n-t%E1%BB%AD-kh%E1%BB%91i-c%E1%BB%A7a-kh%C3%AD-ozone</link>
<category>Hóa học lớp 8</category>
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<pubDate>Tue, 01 Nov 2022 12:10:52 +0000</pubDate>
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<title>Đơn chất là gì **</title>
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<category>Hóa học lớp 8</category>
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<pubDate>Thu, 27 Oct 2022 23:10:23 +0000</pubDate>
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<title>nguyên tử là hạt vô cùng nhỏ và trung hoà về điện. Có.... chất khác nhau, nhưng chỉ có....loại nguyên tử</title>
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<category>Hóa học lớp 8</category>
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<pubDate>Sun, 23 Oct 2022 21:12:59 +0000</pubDate>
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<title>Pha chế dung dịch</title>
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<category>Hóa học lớp 8</category>
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<pubDate>Thu, 13 Oct 2022 20:29:52 +0000</pubDate>
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<title>Vì sao hà hơi vào kính lại thành hơi Nước</title>
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<category>Hóa học lớp 8</category>
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<pubDate>Wed, 05 Oct 2022 18:45:20 +0000</pubDate>
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<title>Tách riêng bột than, bột sắn, bột đồng ra khỏi nước</title>
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<category>Hóa học lớp 8</category>
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<pubDate>Tue, 27 Sep 2022 06:44:24 +0000</pubDate>
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<title>Nêu phương pháp tách các chất</title>
<link>https://selfomy.com/hoidap/463408/n%C3%AAu-ph%C6%B0%C6%A1ng-ph%C3%A1p-t%C3%A1ch-c%C3%A1c-ch%E1%BA%A5t</link>
<category>Hóa học lớp 8</category>
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<pubDate>Sun, 18 Sep 2022 21:57:43 +0000</pubDate>
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<title>Hỗn hợp nào sau đây có thể tách riêng các chất thành phần bằng cách cho hỗn hợp và nước, sau đó khuấy kĩ và lọc?</title>
<link>https://selfomy.com/hoidap/463198/t%C3%A1ch-ri%C3%AAng-ch%E1%BA%A5t-th%C3%A0nh-ph%E1%BA%A7n-b%E1%BA%B1ng-c%C3%A1ch-cho-h%E1%BB%97n-h%E1%BB%A3p-n%C6%B0%E1%BB%9Bc-sau-khu%E1%BA%A5y</link>
<category>Hóa học lớp 8</category>
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<pubDate>Tue, 30 Aug 2022 21:28:02 +0000</pubDate>
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<title>Trong phản ứng ở thí nghiệm trên</title>
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<pubDate>Sat, 27 Aug 2022 21:25:29 +0000</pubDate>
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<title>1, MgO, CO, CaO. 1Những oxit nào tác dụng với O2, H2O, H2. Viết các phương trình phản ứng xảy ra</title>
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<pubDate>Sun, 26 Jun 2022 20:27:25 +0000</pubDate>
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<title>cân bằng phương trình phản ứng</title>
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<pubDate>Mon, 20 Jun 2022 10:16:25 +0000</pubDate>
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<title>Natri tiếp xúc với nước sẽ xảy ra hiện tượng gì?</title>
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<pubDate>Tue, 17 May 2022 18:40:44 +0000</pubDate>
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<title>Theo em để tách rượu ra khỏi dung dịch rượu ( Biết rượu sôi ở 78,3 độ C ) em nên dùng phương pháp nào</title>
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<pubDate>Sun, 08 May 2022 10:34:53 +0000</pubDate>
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<title>Đốt cháy hoàn toàn 0,9 gam một loại gluxit X thu được 1,32 gam CO2 và 0,54 gam H2O. X là chất nào trong số các chất sau?</title>
<link>https://selfomy.com/hoidap/457218/%C4%91%E1%BB%91t-ch%C3%A1y-ho%C3%A0n-to%C3%A0n-lo%E1%BA%A1i-gluxit-%C4%91%C6%B0%E1%BB%A3c-co2%C2%A0v%C3%A0-ch%E1%BA%A5t-trong-c%C3%A1c-ch%E1%BA%A5t</link>
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<pubDate>Sun, 08 May 2022 10:10:42 +0000</pubDate>
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<title>Bài tập hóa học</title>
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<pubDate>Sat, 07 May 2022 12:34:33 +0000</pubDate>
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<title>cho 5,4g nhôm tác dụng vừa đủ với 200ml dung dịch axitsunfuric loãng thu được nhôm sunfat và khí hiđro</title>
<link>https://selfomy.com/hoidap/456585/d%E1%BB%A5ng-200ml-dung-d%E1%BB%8Bch-axitsunfuric-lo%C3%A3ng-%C4%91%C6%B0%E1%BB%A3c-nh%C3%B4m-sunfat-hi%C4%91ro</link>
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<pubDate>Thu, 05 May 2022 12:04:28 +0000</pubDate>
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