If 0.500 mol of nan3 react what mass i'm grams of nitrogen would result

Pastoral farming is best described as a. a method of raising livestock and moving herds b. an african method of agriculture c. a method of cultivating crops on poor soils d. a common method of desert farming select the best answer from the choices provided a b c d

If e is the symbol for an element, which two of the following symbols represent isotopes of the same element? 1. e2. e3. ea.1 and 2c.1 and 4b.3 and 4d.2 and 3

The molar mass of iron(fe) is 55.8 g/mol. what is the mass in grams of 2.25 moles of iron?