How many moles are present in 150g of ammonium hydrogen phosphite

The moles  that  are  present  in 150 g  of ammonium  hydrogen phosphite  is  1.136 moles

       calculation

The formula  of ammonium hydrogen  phosphite = (NH4)2HPO4

moles = mass/molar mass

mass= 150 g

molar mass of (NH4)2HPO4  =  [ ( 14+ 1x4)2)  +1 + 31  + ( 4 x16)] =132 g/mol

 moles is therefore = 150  g/ 132 g/mol  =1.136  moles

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explanation:

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a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.