Calculate the amount of heat needed to melt 45.0 g of solid hexane (C,H,) and bring it to a temperature of 49.2 °C. Be sure your answer has a unit symbol and the correct number of significant digits.

Try Again Your answer is wrong. In addition to checking your math, check that you used the right data and DID NOT round any intermediate calculations. Calculate the amount of heat needed to boil 127. g of benzene (CH), beginning from a temperature of 59.1 °C. Round your answer to 3 significant digits. Also, be sure your answer contains a unit symbol. 4.53 kJ x10 X Ś

(CONTINUED ON NEXT PAGE) 4. Let's say that the full volume of your flask is 325 ml. You heat the flask of air in a hot water bath at 89.0°C according to your thermometer. You then inverti into the cold water bath at 5.0°C Water enters the flask as the volume of the gas shrinks. a) Theoretically, what should the volume of the gas be after it sits in the cold water bath? b) You find that during your experiment that 65.0 mL of water has entered the flask. What is the experimental volume of the gas? c) What is your percent error for this measurement?

please answer quickly