Wiki User
∙ 16y agoQ = mc (delta T) = 32.5 x 1 x (75-34) = 1332.5 cal
Wiki User
∙ 11y agoEthan10 Baller
To calculate the energy needed to heat the water, you can use the specific heat capacity of water, which is 4.184 J/g°C.
Calculate the temperature change: boiling point of water (100°C) - initial temperature (47°C) = 53°C.
Calculate the energy: Energy = mass (32 g) x specific heat capacity x temperature change.
Substituting the values, we get Energy = 32 g x 4.184 J/g°C x 53°C = 7068.096 J or 7.07 kJ.
Wiki User
∙ 16y agoboiling =100c so need to heat by 100-47 = 53 degrees 53*32 =1696 calories
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The boiling point of a solution can be calculated using the formula: ΔTb = Kb * m. First, calculate the molality of the solution using the given masses and the molecular weight of glycerol. Then, use the molality and the boiling point elevation constant for water (0.52 °C/m) to find the change in boiling point. Finally, add this change to the normal boiling point of water (100 °C) to get the boiling point of the solution.
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Grams liquid × mol/g × Hvap
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The boiling point elevation is determined by the molality of the solution, which can be calculated as the moles of solute divided by the mass of solvent in kg. From there, you can use the van't Hoff factor and the molal boiling point elevation constant to determine the change in boiling point. For sodium chloride, the van't Hoff factor is 2. The boiling point elevation constant for water is approximately 0.51 degrees Celsius/m.
The boiling point of a solution can be calculated using the formula: ΔTb = Kb * m. First, calculate the molality of the solution using the given masses and the molecular weight of glycerol. Then, use the molality and the boiling point elevation constant for water (0.52 °C/m) to find the change in boiling point. Finally, add this change to the normal boiling point of water (100 °C) to get the boiling point of the solution.
The energy involved in the formation of 5 grams of rust can be calculated using the enthalpy of formation of iron(III) oxide (rust), which is -824 kJ/mol. First, convert the mass of rust to moles, then use the molar enthalpy of formation to calculate the energy involved.
The temperature of graphite will increase because it absorbs thermal energy. The temperature increase can be calculated using the specific heat capacity of graphite.
The energy required to melt a substance can be calculated using the heat of fusion value for that substance. The heat of fusion for palladium (Pd) is 16.74 kJ/mol. To convert grams to moles, divide the given mass by the molar mass of Pd (106.42 g/mol), then multiply by the heat of fusion value to find the energy needed to melt 4.24 grams of Pd.
Grams liquid × mol/g × Hvap
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