Calcula la entalpía para la reacción siguiente: Sn (S) + Cl2 (g) > SnCl2 (S)

A partir de la información que se proporciona a continuación:

Sn (S) + 2Cl2 (g) > SnCl4 (S) ∆H°reacción =-545,2 Kj

SnCl2 (S) + Cl2 (g) > SnCl4 (l) ∆H°reacción =-195,4 K

1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?

Isopropyl alcohol, (ch3)2choh, is a common solvent. determine the percent by mass of hydrogen in isopropyl alcohol. a) 6.71% h b) 13.4% h c) 25.0% h d) 53.3% h