1) How much energy is required to melt 12.4 grams of ice?
(A) 26.9 J
(B) 182 J
(C) 4140 J
(D) 28,000 J

What stress will shift the following equilibrium system to the left? n2(g) + 3h2(g) ⇌ 2nh3(g) adding more n2(g) adding more nh3(g) increasing the pressure of the system reducing the volume of the container

What is the independent variable in this investigation? mass volume sample number substance density

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.