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chubhunter [2.5K]

3 years ago

14

If 15.0 liters of neon at 25.0 °C is allowed to expand to 25.0 liters, what must the new temperature in Celsius be to maintain c

onstant pressure?

1 answer:

ankoles [38]3 years ago

8 0

Answer:

35

Explanation:

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The three major types of faults are normal, reverse and syncline. true or false

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Which part of dalton's theory did thomson's findings dispute? atoms of different elements have different masses. atoms of the sa

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A customer experiences worsening side effects in response to a prescription. What do you suggest to them?

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2 years ago

A 0.1326 g sample of magnesium was burned in an oxygen bomb calorimeter. the total heat capacity of the calorimeter plus water w

Sladkaya [172]

Answer: Th enthalpy of combustion for the given reaction is 594.244 kJ/mol

Explanation: Enthalpy of combustion is defined as the decomposition of a substance in the presence of oxygen gas.

W are given a chemical reaction:

$Mg(s)+\frac{1}{2}O_2(g)\rightarrow MgO(s)$

$c=5760J/^oC$

$\Delta T=0.570^oC$

To calculate the enthalpy change, we use the formula:

$\Delta H=c\Delta T\\\\\Delta H=5760J/^oC\times 0.570^oC=3283.2J$

This is the amount of energy released when 0.1326 grams of sample was burned.

So, energy released when 1 gram of sample was burned is = $\frac{3283.2J}{0.1326g}=24760.181J/g$

Energy 1 mole of magnesium is being combusted, so to calculate the energy released when 1 mole of magnesium ( that is 24 g/mol of magnesium) is being combusted will be:

$\Delta H=24760.181J/g\times 24g/mol\\\\\Delta H=594244.3J/mol\\\\\Delta H=594.244kJ/mol$

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3 years ago