Which reaction is endothermic? ½N 2(g) + 3/2H 2(g) → NH 3(g) + 11.0 kcal H 2(g) + ½ O 2(g) → H 2O(g), ΔH = -57.82 kcal ½N 2(g) + O 2(g) + 8.1 kcal → NO 2(g) C (diamond) + O 2(g) → CO 2, ΔH = -94.50 kcal

What is the formula that this ionic compounds could form sr2+p3-o2-

Match term definition ellipse a) diagonal cross section of a cylinder circle b) diagonal cross section through the widest part of a sphere sphere c) cross section parallel to the base of a cone great circle d) shape created when a semi-circle is rotated around the y-axis triangle e) perpendicular cross section of a cone

4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has: