How much heat (in kilojoules) is evolved or absorbed in the reaction of 1.90 g of na with h2o? 2na(s) 2h2o(l)→2naoh(aq) h2(
g. δh∘ = -368.4kj.?

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

Once similarity and one difference between a mixture of elements and a mixture of compounds

In which region is the substance in both the solid phase and the liquid phase? 1 2. 3 4 mark this and return save and exit next