化学molar mass 1.find the molar mass of the following (hint use the periodic table)-H -CL2 -Br -N2O4 -Na2S -NH3O -K2So2.calculate how many moles you would have in the following-10gH -50gCL2 -100gBr - 20gNa2s3.calculate the mass of -2molH -5mplNa2S

化学molar mass 1.find the molar mass of the following (hint use the periodic table)-H -CL2 -Br -N2O4 -Na2S -NH3O -K2So2.calculate how many moles you would have in the following-10gH -50gCL2 -100gBr - 20gNa2s3.calculate the mass of -2molH -5mplNa2S oxygen dioxide 中文是什么还有它的molar mass 是什么 a sample of gas has a density of 1.96g/l at STP.Determine its molar mass. The mass of 0.02mol of a substance is 0.88g1.what is the molar mass of this substance?2.what is its chemical formula? 英语化学求分子式和试验试!A compound contains only carbon,hydrogen,and oxygen.Combustion of 10.68 mg of the compound yields 16.01 mg CO2 and 4.37 mg H2O.The molar mass of the compound is 176.1 g/mol.What are the empirical and molecular for 英语翻译Mendeleev arranged the known elements in order of increasing atomic weight （molar mass）请问这句话后面的increasing atomic A newly discovered gas has a density of 2.39 g/L at 23.0°C and 715 mm Hg.What is the molar mass of the gas? 为什么只知道气体的摩尔量（molar mass）就可以计算其在常温常压（STP）下的密度,但是固体和液体就不行? mass Haemoglobin (Hb) is the protein that transports oxygen in mammals.Hb is 0.342% Fe by mass and each Hb molecule contains four iron atoms.Calculate the molar mass of Hb. molar heat capacity是什么意思 molar conversion什么意思 请问在化学中 mass 是什么意思啊!谢谢啦! find the empirical formulae of a compound with composition 46.7% silicon and 53.3% oxygen by mass The mass of 1000cm^3 of copper is 8.9 kg and the specific heat capacity of copper is 400 J kg^-1 K^-1.Find its heat capacity.The mass of 1000 cm^3 of water is 1 kg.For the smae volumn of copper and water,which one has the larger heat capacity 美国大学物理题Problem 1.An unstable Pu-­‐240 nucleus (mass 240.002 u) is at rest when it fissions into two Ag-­‐120 nuclei (mass 119.893 u) which then fly off far from each other.Find the final kinetic energy of one Ag-­‐1 英语翻译the masses of three student are in the ratio 4:5:8,if their combined mass is 204kg,find the mass of the heaviest student, a mixture of Caco3 and Baco3 is 42.8% Co3 by mass. find the mass percent of baCo3 in the mixture什么是is 42.8% Co3 by mass? 是说混合物有42.8%的重量是Co3么?