Consider the mechanisn NO2(g) + F2(g) → NO2F(g) + F(g) slow F(g) + NO2(g) → NO2F(g) fast What does the reaction profile show? 1. two maxima, the first being highest 2. two maxima, both the same height 3. two maxima, the second being highest 4. one maximum for the second step

The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?

Why is the melting of ice a physical change ?