Molecular compounds of low molecular weight tend to be gases at room temperature. which of the following is most likely not a gas at room temperature? molecular compounds of low molecular weight tend to be gases at room temperature. which of the following is most likely not a gas at room temperature? nabr co2 hcn n2 nh3

Option (a) is the correct answer.

Explanation:

Sodium bromide (NaBr) is an ionic salt as it is formed by transfer of an electron from sodium to bromine atom.

Whereas , HCN, and are all covalent compounds. And, all of them exists as a gas at room temperature.

Also according to rate of diffusion law, rate of diffusion is inversely proportional to square root of molecular weight of gas.

Mathematically,  Rate of diffusion =

Out of the given options NaBr has the highest molecular weight which is 102.894 g/mol.

Thus, we can conclude that NaBr is most likely not a gas at room temperature.

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

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tony (lordcaos066)

1. they vary with a higher number because boiling is way hotter than melting