A block of aluminum occupies a volume of 13.8 mL and weighs 43.3 g. What is its density? Give answer with one decimal.

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.

Quiz1. which physical state of nitrogen has the highest entropy? a solid© b gasoc liquid

Rank the four gases (air, exhaled air, gas produced from from decomposition of h2o2, gas from decomposition of nahco3) in order of increasing concentration of co2