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Pavel [41]
3 years ago
12

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

Chemistry
1 answer:
trapecia [35]3 years ago
4 0

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


       <u><em>calculation</em></u>

<em>The formula  of ammonium hydrogen  phosphite = (NH4)2HPO4</em>

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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Answer:

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Uranium, an important component of both nuclear weapons and nuclear reactors, has two major isotopes, U-238, which has a half-life of  approximately 4.5 billion years, and U-235, which has a half-life of approximately 700 million years. Both were present in equal amounts at the time of the creation of the Earth, 4.5  billion years ago. How many years after the creation of the Earth had the amount of radiation from uranium decayed to half the amount present at the time of the creation of the Earth

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