N2 + 3H2 + 2NH3 How many grams of nitrogen are required to react with Hydrogen to form
5.56 g of ammonia? (show all work for full credit)

Element before carbon on the periodic table

The time that is taken by neptune once around the sun is called

Which statement is true about the model of the electromagnetic spectrum a: it change the frequencies of light. b: it compare wavelengths of light. c: the color of light waves can be changed using the model. d: the intensities of light waves can be decreased using the model.