Example Question. A substance that had been spil t was found, through analysis, to contain 29.1% sodium, 40.5% sulphur and 30.4% oxygen. Calculate the empirical formula of thi s unknown substance. Moles = Mass/Atomic Mass 1. Na = 29.1/23 = 1.27 moles; S = 40.5/32 = 1.27 moles; O...
Question:What is the empirical formula for adrenaline?Empirical Formulas:Empirical formulas give the ratio of different elements within a molecule, unlike molecular formulas they do not give the exact number of atoms of each element. Empirical formulas can be found for any compound as they do not...
The empirical formula is the formula whose subscript values are their lowest possible integers that still satisfy the same ratio between them. Since 9...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough ...
empirical formula 是实验式 也叫 最简式 molecular formula 是分子式 1.最简式表示化合物分子所含各元素的原子数目最简单整数比的式子,不能确切表明分子中的原子个数. ①最简式是一种表示物质组成的化学用语; ②无机物的最简式一般就是化学式; ③有机物的元素组成简单,种类繁多,一个最简式所表示的物质往往...
【简答题】1.What is the empirical formula of the following compounds? a. a liquid containing 2.0g of hydrogen, 32.1g sulfur and 64.0g oxygen. b. a white solid containing 4.0g calcium,3.2g oxygen,0.2g hydrogen. c.a white solid containing 0.243g magnesium and 0.71g chlorine。 2. 3.888g...
What is the formula of your hydrated salt (use the example in question 10)? What is the name of your hydrated salt? Extended Questions: 11. If you stopped your experiment short, and did not drive off all of the water, how would that affect the empirical formula that you determined?
Example 1: Caffeine has the following composition: 49.48% of carbon, 5.19% of hydrogen, 16.48% of oxygen and 28.85% of nitrogen. The molecular weight is 194.19 g/mol. Find out the molecular and empirical formula. Solution: Multiply percent composition with the molecular weight, ...
Question: Question 78What is the empirical formula for a compound that contains 1.33gC,0.519gN, and 0.148 g H ? There are 3 steps to solve this one.
百度试题 结果1 题目The empirical formula of Pentane is CH.()A.对B.错 相关知识点: 试题来源: 解析 A 本题考查be动词的用法。根据主语的人称和数,"I" 后面应该用 "am","she" 后面应该用 "is"。因此,正确答案为 "am; is",即选项 C。反馈 收藏 ...
The refractive index of freezing brine is important in order to, for example, estimate oceanic scattering as sea ice develops. Previously, no simple continuous expression was available for estimating the refractive index of brine at subzero temperatures. I show that extrapolation of the empirical fo...