Chemistry, 25.07.2021 19:20 GiuliAzevedo
Đốt cháy hoàn toàn 1,18 gam chất X (CxHyN) bằng một lượng không khí vừa đủ. Dẫn toàn bộ hỗn hợp khí sau phản ứng vào bình đựng dung dịch Ca(OH)2 dư, thu được 6 gam kết tủa và có 9,632 lít khí (đktc) duy nhất thoát ra khỏi bình. Biết không khí chứa 20% oxi và 80% nitơ về thể tích. Xác định công thức phân tử của X.
Answers: 1
Chemistry, 22.06.2019 01:30, thickness7699
Pls! plant cells and animal cells were observed under a microscope. the characteristics of two cells are listed below. cell p: does not capture sunlight cell q: has cytoplasm but no chloroplast which statement about the two cells is correct? cell q also has a cell wall. cell q also has large vacuole. cell p also has a large vacuole. cell p also has a cell membrane.
Answers: 1
Chemistry, 22.06.2019 05:30, alexusnicole817
Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change
Answers: 2
Chemistry, 22.06.2019 14:30, Dreynolds1667
100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)
Answers: 1
Đốt cháy hoàn toàn 1,18 gam chất X (CxHyN) bằng một lượng không khí vừa đủ. Dẫn toàn bộ hỗn hợp khí...
Mathematics, 26.06.2019 20:30
Mathematics, 26.06.2019 20:30
Mathematics, 26.06.2019 20:30