(14pts)A toddler drops their 1.6 N ball out the window. If the ball has 13.9 J of energy when it hits the ground, how high was the window (in m)?

21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8

Using the periodic table, complete the following. element: hydrogen symbol: h₂ molecular weight: g mass of one mole: g/mol

The dashed segment of the plotted experiment in the graph in the l