The combustion of hydrogen-oxygen mixtures is used to produce very high temperatures (ca. 2500 °C) needed for certain types of welding operations. Consider the reaction to be
H₂(g) + ½O₂(g) → H₂O(g) ∆H° = -241.8 kJ/mol
What is the quantity of heat evolved, in kilojoules, when a 180 g mixture containing equal parts of H₂ and O₂ by mass is burned?
in kj
Answers: 1
Chemistry, 22.06.2019 23:30
With the largest atoms and the smallest number of valence electrons and with the smallest atoms and the greatest number of valence electrons are the most reactive. a. nonmetals; metals b. nonmetals; transition elements c. transition elements; metals d. metals; nonmetals
Answers: 3
Chemistry, 22.06.2019 23:30
The ammonia molecule in the diagram has the observed bond orientation because
Answers: 1
Chemistry, 23.06.2019 16:20
Which of the following is the best name for a compound made from calcium and bromine? (cabr2) calcium bromide calcium dibromide monocalcium dibromide calcium bromine ii
Answers: 1
Chemistry, 23.06.2019 16:20
What is the concentration, in grams per liter, of a solution prepared by dissolving 0.00040 mol hcl in 2.2 l h2o? assume that the volume of the solution does not change when the hcl is added.
Answers: 1
The combustion of hydrogen-oxygen mixtures is used to produce very high temperatures (ca. 2500 °C) n...
Health, 25.06.2019 13:00
History, 25.06.2019 13:00
History, 25.06.2019 13:00
Mathematics, 25.06.2019 13:00
Health, 25.06.2019 13:00
History, 25.06.2019 13:00
Mathematics, 25.06.2019 13:00
Computers and Technology, 25.06.2019 13:00
Spanish, 25.06.2019 13:00
English, 25.06.2019 13:00
Business, 25.06.2019 13:00
History, 25.06.2019 13:00
Mathematics, 25.06.2019 13:00