What would you need to do to calculate the molality of 10 g of NaCl in 2 kg of water?
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How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?