Calculate the amount of heat needed to melt 83.0 g of solid methanol (CH3OH) and bring it to a temperature of 46.2 °C. Round your answer to 3 significant digits. Also, be sure your answer contains a unit symbol. 0 0 X 3

What amount of heat, in J, is required to raise the temperature of 391.2 g of lead by 14.3°C? The specific heat of lead is 0.128 J/g°C. Give your answer in standard notation to 0 decimal places.

Calculate the amount of heat needed to boil 189. g of water (H₂O), beginning from a temperature of 52.0 °C. Round your answer to 3 significant digits. Also, be sure your answer contains a unit symbol. 0 x10 X 3

Calculate the amount of heat needed to boil 126. g of water (H₂O), beginning from a temperature of 99.3 °C. Round your answer to 3 significant digits. Also, be sure your answer contains a unit symbol. Ú ☐ x10 X

Calculate the amount of heat needed to melt 140. g of ice (H₂O) and bring it to a temperature of 23.2 °C. Round your answer to 3 significant digits. Also, be sure your answer contains a unit symbol. □ x10 X

If the KW of water at 41.1°C is 3.04 × 10–14, calculate the pOH of water at this temperature. 7.000 13.043 7.241 6.759 27.043

Which of the following is the highest temperature? 350 °F 400 K 170 °C 350 K 50 °C

Calculate the amount of heat needed to melt 16.0 g of solid octane (C8H₁8) and bring it to a temperature of 58.3 °C. Round your answer to 3 significant digits. Also, be sure your answer contains a unit symbol. x10 X

A piece of cobalt (cp = 0.46 J/g⋅⋅°C) originally at 98.6 °C is placed into a coffee cup calorimeter containing 200.0 grams of water at 25.5 °C. The final temperature of the metal and water was 39.5 degrees Celsius.  What was the mass (g) of the piece of cobalt?  Do not type units into your answer.

An organic chemist measures the temperature I of a solution in a reaction flask. Here is the result. T = 67. °C Convert I to SI units. Be sure your answer has the correct number of significant digits. ☐K x10 Ś