英语版化学题A mass of 43.3 tetraphosphorus hexoxide,P4O6 is actually formed when 75.3g of phosphorus,P4,react with 38.7g of oxygen gas,O2 if theoretical yield for this reaction is 88.7g of tetraphosphorus hexoxide,what is the percent yield for

英语版化学题A mass of 43.3 tetraphosphorus hexoxide,P4O6 is actually formed when 75.3g of phosphorus,P4,react with 38.7g of oxygen gas,O2 if theoretical yield for this reaction is 88.7g of tetraphosphorus hexoxide,what is the percent yield for the mass of 与 a mass of 有啥区别? mass的用法the mass of 和 a mass of 有什么区别？ a mass of =masses of吗? 一个简单的化学题（in english)Which mass of oxygen combines with 12g of magnesium?A 4gB 8gC 16gD 32g说明原因.C a mass of 的近义词和词性 a mass of是什么意思及用法 a mass 一道AP化学题In the electroplating of nickel, 0.200 faraday of electrical charge is passed though a solution of NiSO4. What mass of nickel is deposited?(答案 5.87g) The elements of a compound occur in a fixed mass ratio.请问fixed mass ratio 一道英文化学题A concentrated sulfuric acid solution is 74.0% H2SO4by mass and it has a density of 1.66 g mL-1 at 20oC.What is the concentration of this H2SO4 solution? a mass of 怎么用还有masses of 200分求）大一物理题,因为是英语版的,呵呵The particles each of mass m and speed v,travel in opposite directions along parallel lines separated by a angular,The total angular momentum of the system about any origin is_______.翻译一 It is nothing short of a mass exodus. 含义同上! a mass of ）a mass of可以修饰可数名词伐若可以,举3个例子给我 a mass of是什么意思We took _____ pictures of themA> many of B. masses ofc. a large amount of 为什么是用a mass of ? a mass of与a mount of与many of的区别 The club women gathered____clothes for people in the tsunami-hit countriesA a mass of B mass of C a large amount of D amount of 为什么选A