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Trường Phổ thông Năng khiếu 1996 Vietnam National University, Ho Chi Minh City: District 5, Ho Chi Minh City: HUSC High School for Gifted Students [4] Trường Trung học phổ thông chuyên Khoa học Huế 1976 University of Science, Hue University: Huế, Thừa Thiên Huế province: High School for the Gifted, Vinh University [5]
Lead perchlorate trihydrate is produced by the reaction of lead(II) oxide, lead carbonate, or lead nitrate by perchloric acid: . Pb(NO 3) 2 + HClO 4 → Pb(ClO 4) 2 + HNO 3. The excess perchloric acid was removed by first heating the solution to 125 °C, then heating it under moist air at 160 °C to remove the perchloric acid by converting the acid to the dihydrate.
Lead tetrachloride can be made by reacting lead(II) chloride PbCl 2, and hydrochloric acid HCl, in the presence of chlorine gas (Cl 2), [5] leading to the formation of chloroplumbic acid H 2 PbCl 6. It is then converted to the ammonium salt (NH 4 ) 2 PbCl 6 by adding ammonium chloride (NH 4 Cl).
Pb is used in HCl service even though the PbCl 2 formed is slightly soluble in HCl. Addition of 6–25% of antimony (Sb) increases corrosion resistance. [16] A basic chloride of lead, PbCl 2 ·Pb(OH) 2, is known as Pattinson's white lead and is used as pigment in white paint. [17]
Joseph Nguyễn Năng was born on 24 November 1953 in Phúc Nhạc, Ninh Bình Province. [1] In 1954, he and his entire family moved to the South. [2] He studied at the minor seminary of Saigon from 1962 to 1970 and at the major seminary of Saint Pius X in Dalat from 1975 to 1978.
Lê Hồng Phong, together with High School for the Gifted (Phổ Thông Năng Khiếu) and Trần Đại Nghĩa High School, make up the Big 3 of "Highly selective" schools (trường chuyên) in Hồ Chí Minh City and in Southern Vietnam, having achieved significant numbers of awards in both domestic and international academic competitions.
ClO3 may refer to: The chlorate anion, Monochlorine trioxide, a hypothetical radical akin to chlorine dioxide; The empirical formula for dichlorine hexoxide / chloryl perchlorate; The perchloryl cation, +
Sodium chlorate is an inorganic compound with the chemical formula Na ClO 3.It is a white crystalline powder that is readily soluble in water. It is hygroscopic.It decomposes above 300 °C to release oxygen [4] and leaves sodium chloride.