Chemistry, 27.09.2019 08:20 DiamondSharp9860

A1.00 g sample of nh4no3 is decomposed in a bomb calorimeter. the temperature increases by 6.12°c. what is the molar heat of decomposition for ammonium nitrate?

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First, you have to know that this is an exothermic reaction as the heat increased as a product of the reaction.

then, we need to get the heat change q = M*C*ΔT

= 1 g * 1.23 KJ/C-1 * 6.12

= 7.5 KJ

and because of this is an exothermic reaction so,
the heat of decomposition ΔH = - 7.5 KJ

after that, we need to get the moles of NH4NO3:

moles = mass / molar mass

when the molar mass of NH4NO3 = 80.043 g/mol

∴ moles of NH4NO3 = 1g / 80.043 g/mol

= 0.0125 moles

So the decomposition then will be = ΔH / moles NH4NO3

= -7.5 KJ / 0.0125 moles

= -600 KJ.mol-1

Answer from: Quest

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).

Answer from: Quest

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.

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A1.00 g sample of nh4no3 is decomposed in a bomb calorimeter. the temperature increases by 6.12°c. w...

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