Ptor>
pr
energ
q+pr
- 111.4
heat input
-988.2
p+qr
reaction progression
which kind of reaction does this graph represent?
endothermic because hrxn -876.8 kj
endothermic because hrxn = 876 8 kj
exothermic because a hoxn -1,099 6 kj
exothermic because a hrxn - 1.099.6 kj

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

An engineer decides to use a slightly weaker material rather than a stronger material, since she knows that the stronger material can break suddenly. this is an example of what? a choosing a material that will show warning before it fails b using composite materials that combine strength c using a material for multiple applications d using design techniques that increase efficiency and reduce cost