Chemistry, 11.11.2020 01:00 mathamaticlly
Carbon reacts with oxygen to produce carbon dioxide (CO2(g), AH-393 5 kJ/mol) according to the equation below. C(s) + 2O2(g) - CO,(9) What is the enthalpy change of the reaction? Use AH-2(AH producto) - (AH ereactonto) -393 5 kJ -196 8 kJ 196.8 kJ 393.5 KJ
Answers: 2
Chemistry, 22.06.2019 19:20, johnkings140
For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)
Answers: 1
Chemistry, 23.06.2019 19:00, gabrielar80
Freya built a model of the earth, sun, and moon. freya can cause her model to move in three different ways. she can turn the crank to model how the earth revolves around the sun, she can spin the globe to model how the earth rotates on its axis, and she can push the moon with her fingers to model how the moon revolves around the earth. how could freya best use her model to demonstrate the cause of the day/night cycle on earth?
Answers: 1
Carbon reacts with oxygen to produce carbon dioxide (CO2(g), AH-393 5 kJ/mol) according to the equat...
Advanced Placement (AP), 27.10.2020 20:00
Mathematics, 27.10.2020 20:00
Mathematics, 27.10.2020 20:00
English, 27.10.2020 20:00