2) Phenolphthalein (C20H1404) is a dye very commonly used as indicator in acid-base titrations. The simplified
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5.27 kJ of heat are required to heat 231 g of gold from 18 °C to 195 °C.
We have 231 g of gold at 18 °C and supply it with heat to increase its temperature to 195 °C. We can calculate the amount of heat required using the following expression.
where,
- Q: heat
- <em>c: specific heat capacity of gold</em> (0.129 J/g.°C)
- m: mass
- ΔT: change in the temperature
5.27 kJ of heat are required to heat 231 g of gold from 18 °C to 195 °C.
You can learn more about heating here: brainly.com/question/1105305
