The green substances on a copper square, penny, and the statue of Liberty are not the same thing. Although they are all green, and they are all soluble in water, they have different melting points, densities, and solubility in alcohol. Substances have properties. These have different properties, so they have to be different Substances. How could the explanation be improved?

In an effort to address concerns about global warming, a power plant in portland,oregon is designed to take all of its exhaust gases from its boilers and recycle the co2 using the solvay process to make sodium hydrogen carbonate. the reaction is shown below. nh3(g) + h2o(l) + co2(g) + nacl(aq) → nahco3(aq) + nh4cl(aq) how many liters each of nh3 and co2 (both at stp) would be consumed to produce 3.00 kg of sodium bicarbonate? the volume of both nh3 and co2 would be

Calculate the number of molecules present in 0.750 mol of mgo.

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as