Calculate the amount of heat in joules needed to raise 135 g of aluminum metal from 65.0°C to 375.0°C the specific heat of water is 0.9 02J/G degrees Celsius? Help

Dumbledore decides to gives a surprise demonstration. he starts with a hydrate of na2co3 which has a mass of 4.31 g before heating. after he heats it he finds the mass of the anhydrous compound is found to be 3.22 g. he asks everyone in class to determine the integer x in the hydrate: na2co3·xh2o; you should do this also. round your answer to the nearest integ

How many grams of ammonia are produced when 1.0 mole of nitrogen reacts

Which example is a mechanical wave?     a.microwave    b.radio wave    c.water wave    d.ultraviolet light