Chemistry, 18.09.2019 02:00 davisparker5269
At its boiling point (280°c) and at atmospheric pressure, phosphorus gas has a density of 2.7 g l–1 . under the same conditions, nitrogen gas has a density of 0.62 g l–1 . how many atoms of phosphorus are there in one phosphorus molecule under these conditions?
Answers: 3
Chemistry, 22.06.2019 02:40
Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?
Answers: 2
Chemistry, 22.06.2019 18:50
Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.
Answers: 1
Chemistry, 22.06.2019 20:00
There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .
Answers: 3
At its boiling point (280°c) and at atmospheric pressure, phosphorus gas has a density of 2.7 g l–1...
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