Cho 10 gam hỗn hợp Mg và Ag tác dụng vừa đủ với dung dịch HCl loãng. Thu được 3,308 lít H2(đktc). Phần trăm khối lượng Mg trong hỗn hợp ban đầu là

các bn làm giúp mik nhé,mik cảm ơn

Giúp mình với nha!! Thanks nhìu

Viết phương trình đường thẳng d1 đi qua M và tạo với d2 một góc a. Biết: a) M(-2; -1); (d2): 3x+2y-1 = 0; a = 30 độ b) M(4; 1) ; (d2): x = 0 ; a = 60 độ

Sau cách mạng tháng Tám, quân Đồng minh vào giải giáp quân phát xít Nhật ở miền Bắc là A: quân Mĩ. B: quân Anh. C: quân Trung Hoa dân quốc. D: quân Pháp.

giảii và giải thích giúp mình với ạ mình dg cần gấp 50đ +5* nhaa mm hộ e với ạ từ C31-40 ạ

Tìm x biết: a) 12.x-33= 3^3. 3^2 b) 541+(218-x)=735 c) (24+5^3)-4.5^4= 5^4 d) 1 + 2 +…+ x = 55 Tính nhanh(nếu có thể) a) 6^7: 6^5+5^2.2^5 b) 36.2020 - 2020.26 c) 36.2020-2020.26

Trong vòng 3 tiếng thôi nha mn 5* và Cảm Ơn

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Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions. The Space of Gong Culture in Central Highlands The space of gong culture in Central Highlands of Viet Nam covers 5 provinces of Kon Turn, Gia Lai, Dak Lak, Dak Nong and Lam Dong. The masters of gong culture are the ethnic groups of Ba Na, Xo Dang, M’Nong, Co Ho, Ro Mam, E De, Giarai... The gong performances are always closely tied to community cultural rituals and ceremonies of the ethnic groups in Central Highlands. Many researchers have classified gongs as ceremonial musical instrument and the gong sounds as a means to communicate with deities and gods. The gongs are made of bronze. Their diameter is from 20cm to 60cm or from 90cm to 120cm. A set of gongs consists of 2 to 12 or 13 units and even to 18 or 20 units in some places. ‎In most of the ethnic groups, namely Giarai, Ede, Kpah, Ba Na, Xo Dang, Brau, Co Ho, etc., only males are allowed to play gongs. However, in others such as Ma and M’Nong groups, both males and females can play gongs. Few ethnic groups (for example, E De Bih), gongs are performed by women only. As for the majority of ethnic groups in Central Highlands, gongs are musical instruments of sacred power. It is believed that every gong is the settlement of a god who gets more powerful as the gong is older. Therefore, gongs are associated to all events in one’s life, such as the inauguration of new houses, funerals, buffalo sacrifice, new harvest, ceremony to pray for people’s and cattle"s health, ceremony to see off soldiers to the front, and the victory celebration. The word “inauguration” in paragraph 4 is closest in meaning to ________. A: building B: finding C: sale D: opening