How many grams are in 0.02 moles of beryllium iodide, Bel2?

Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?