Gram mol

It is evident from the equation that the sodium is used in excess. Actually 61 5 g. of n-propyl bromide is 0 5 gram mol this will react with 0 5 gram atom or 11-5 g. of sodium, so that 100 per cent, excess was actually employed. The theoretical yield of n-hexane will be 0-25 gram mol or 21-5 g., since 2 mols of n-propyl bromide give 1 mol of n-hexane. The actual yield was 18 g., hence the percentage yield is (18/21-5) X 100 = 84 per cent. 

To decide which component should be employed for the calculation of the yield of ethyl iodide, the weights of the reactants are first divided by the appropriate atomic or molecular weight in order to obtain the number of gram atoms or gram mols actually used. The equation shows that the alcohol and iodine react in the ratio of 5 5 or 1 1. Inspection of the results clearly shows that the alcohol is present in about 20 per... 

Place 204 g. (249-5 ml.) (2 gram mols) of dry n-hexyl alcohol in a 350 ml. Claisen flask with fractionating side arm. Introduce 5-75 g. (0-25 gram atoms) of clean sodium in small pieces and warm under reflux (as in Fig. Ill, 58, 1 but with dropping funnel omitted ) until all the sodium has reacted (ca. 2 hours). Introduce 39 g. (20 ml.) (0-25 gram... 

Base Amount of base in grams Amount of H20 in grams Mol H2 per mol Ru3(CO)i2... 

The organic phase indudes aliphatic as well as aromatic adds, alcohols, esters, ethers, sugars and extractives (Table 6.3). Approximately 70 wt.% of the oil has been identified. The molecular weight of the individual components ranges from 18 up to 2000 gram mol-1. In some cases, the oil is an emulsion at microscopic level [58]. 

Sample Entry Oligomer Type Theory (gram/mol) Measured Tg°C... 

Finally, add the masses together. The units that you use for molar mass is grams/mol. 

Summation of the series gives a value 1 -747 and is called Madelung s constant A. The expression Ae2jr is the energy which is obtained when one ion is surrounded by all the others, or, equally well, the energy necessary to remove one ion from the crystal. In order to remove 2N ions in a gram mol of the crystal, in other words to... 

In this formula V is the volume of one gram mol of a substance containing N particles per gram mol. If the substance consists of molecules, then a — Eoq, where oc is the polarizability of the ith atom in the molecule. In gases where is nearly unity, the formula can be further simplified by putting n% 2 = 3 which gives... 

T (abs.) is the temperature at which the bimolecular velocity constant has an arbitrarily chosen value for each reaction (namely 0-0914 gram mol. per litre per second). 

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