Calculate the energy required to heat 1.80 kg of mercury from -5.8 °C to 5.2 °C. Assume the specific heat capacity of mercury - 1 1 under these conditions is 0.139 J.g¹K¹. Be sure your answer has the correct number of significant digits. 0 0 x10 ロ・ロ X μ 00

be sure your answer is correct and have the correct number of significant digits

Calculate the energy required to heat 403.0 mg of water from 36.8 °C to 57.0 °C. Assume the specific heat capacity of water under these conditions is 4.18 J-g .K . Be sure your answer has the correct number of significant digits. 0 0x10 ロ・ロ X μ 00 4 S

A 5.40-g sample of octane is burned in a bomb calorimeter containing 6.17 x 102 g H,O. Given that 1.90 x 10 cal of energy is released if the water temperature increases 3.08°C. Calculate the energy released in J. Enter your answer in scientific notation. Be sure to answer all parts. × 10 (select)

Calculate the energy required to heat 1.30 kg of iron from 2.3 °C to 11.7 °C. Assume the specific heat capacity of iron under these conditions is 0.449 J∙g¯¹·K¯¹. Be sure your answer has the correct number of significant digits. 1 1 0 x10 ロ・ロ X н 00 JU:::| 00

Enter your answer in the provided box. High-purity benzoic acid (CHgCOOH; AH for combustion =-3227 kJ/mol) is used as a standard for calibrating bomb calorimeters. A 1.221-g sample burns in a calorimeter (heat capacity = 1365 JPC) that contains exactly 1.700 kg of water. What temperature change is observed?

Combustion of natural gas (primarily methane) occurs in most household heaters. The heat given off in this reaction is used to raise the temperature of the air in the house. Part A Assuming that all the energy given off in the reaction goes to heating up only the air in the house, determine the mass of methane required to heat the air in a house by 10.0 ∘C. Assume each of the following: house dimensions are 25.0 m×30.0 m×3.2 m; specific heat capacity of air is 30 J/K⋅mol; 1.00 molof air occupies 22.4Lfor all temperatures concerned. Express your answer using two significant figures.   mm = g