Chemistry, 09.11.2019 04:31 leannaadrian
Suppose 50.0 dm3 of dry air at 25c was slowly bubbled through a thermally insulated beaker containing 250g of water initially at 25c. calculate the final temperature of the liquid. the vapour pressure of water is approximately constant at 3.17 kpa throughout, and the heat capacity of the liquid is 75.5 j k-1 mol-1. assume that the exit gas remains at 25c and that water vapour is a perfect gas. the standard enthalpy of vapourization of water at 25c is 44.0 kj mol-1. (hint: start by calculating the amount in moles of h2o in the 50.0 dm3 of air after it has bubbled into the liquid)
Answers: 3
Chemistry, 21.06.2019 23:00
Ahypothrticalax type of ceramic material is known to have a density of 2.10 g/cm3 and a unit cell of cubic symmetry with a cell edge length of 0.57 nm. the atomic weights of the a and x elements are 28.5and 30.0 g/mol, respectively. on the basis of this information, which of the following crystal structures is (are) possible for this material: sodium chloride, cesium chloride, or zinc blende
Answers: 1
Chemistry, 22.06.2019 05:30
Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?
Answers: 2
Chemistry, 22.06.2019 06:00
Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?
Answers: 3
Chemistry, 22.06.2019 18:30
Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years
Answers: 2
Suppose 50.0 dm3 of dry air at 25c was slowly bubbled through a thermally insulated beaker containi...
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