The ΔHfus for sodium is 2.60 kJ/mol. The ΔHvap of sodium is 97.42 kJ/mol. The specific heat for solid sodium is 1.23 J/g°C. The melting point of sodium is 97.81°C. The boiling point for sodium is 882.9°C. How much energy is required to melt 50.0 grams of sodium?

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.

In a laboratory determination of the atomic weight of tin, a sample of tin is weighed in a crucible. nitric acid is added, and the reaction proceeds to give a hydrated tin(iv)oxide plus no2and h2o. the hydrated tin(iv)oxide is then heated strongly and reacts as follows: sno2.xh2o(s)sno2(s)+ xh2o(g)the sno2is finally cooled and weighed in the crucible. explain the effect on the calculated atomic weight of tin that would result from each of the following experimental errors: (a)considerable spattering occurs when the nitric acid is added to the tin.(b)the hydrated tin(iv)oxide is not heated sufficiently to change it completely to tin oxide.