Which of the quantities listed below are transfers of energy? Select all that apply. Heat Work Thermal energy Kinetic energy OPotential energy
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- An oxyacetylene torch is used to weld steel. During this process _________energy is converted into --mechanicalchemicalthermalelectrical energy. A. mechanical B.chemical C. thermal D.electrical When an ice cube (the system) melts, energy flows from the______ --(surroundings OR system )to the --__________(surroundings OR system )and the internal energy of the system --__________ (increases OR decreases OR does not change.) In a chemical hot pack, iron powder and oxygen react to form iron oxide in the presence of a catalyst. This reaction causes the temperature of the hot pack to increase. This process is --________(exothermic OR endothermic.) FILL IN THE BLANK ANSWER ALL PLEASE* Please I want answer of these questions (All Sub-parts) as urgent basis. Many Thanks. 430 grams of copper pellets are removed from 330°C oven and immediately dropped into 250 mL of water in an insulated cup. The temperature of water raises 39°C then remains at that temperature. Calculate the following: a) Mass of water in kilograms b) The heat energy removed from copper pellets in joules . (Sp.Heat of copper is 385 J/Kg°C) c) The initial temperature of water in degree celsius . (Sp.Heat of water = 4186 J/kg°C)Only typed explanation otherwise leave it A system releases 255kJ of heat and does 118kJ of work on the surroundings. What is the change in internal energy of the system?
- A 145.5 g piece of copper (specific heat 0.38 J/g･°C) is heated and then placed into 400.0 g of water initially at 20.7°C. The water increases in temperature to 22.2°C. What is the initial temperature of the copper? (The specific heat of water is 4.18 J/g･°C). Please answer is type in word don't images upload thank you.Give typed full explanation not a single word hand written otherwise leave it A 12.721 g piece of metal is submerged in boiling water for 5 minutes and then quickly transferred to a constant pressure calorimeter containing 40.0 mL of water at 22.7 °C. The final temperature of the water and metal in the calorimeter is 24.0 °C. What is the specific heat capacity of the metal? Identify the metal.A typical candy bar weighs about 2.00 oz (1.00 oz = 28.4 g). (a) Assuming that a candy bar is 100% sugar and that 1.00 g of sugar is equivalent to about 4.00 Caloriesof energy, calculate the energy (in kJ) contained in a typical candy bar. (in kJ) (b) Assuming that your mass is 60.9 kg and you convert chemical potential energy to work with 100% efficiency,how high would you have to climb to work off the energy in a candy bar? (in m) (Potential energy = mass×g ×height, where g = 9.81 m/s2.)
- Estimate the thermal properties of a food with the following composition: carbohydrate 14.6%, 1.8% protein, 1.8% fat, 0.4% ash, 81.4% moisture. a. Specific heat is based on the equation Siebel = AnswerkJ / kg ° C. b. Specific heat according to the equation Charm = AnswerkJ / kg ° C. c. Specific heat is based on the equation Heldman & Singh = AnswerkJ / kg ° C. d. Specific heat is based on the equation Choi & Okos = AnswerkJ / kg ° C. e. Heat conductivity is based on the equation Sweat = AnswerW / m ° C. f. Heat conductivity is based on the Choi & Okos = AnswerW / m ° C equation. g. Heat diffusivity based on the Choi & Okos = Answerm² / s equation.A 360-g piece of rebar (a steel rod used for reinforcing concrete) is dropped into 425 mL of water at 24.0 °C. The final temperature of the water was measured as 42.7 °C. Calculate the initial temperature of the pieceof rebar. Assume the specific heat of steel is approximately the same as that for iron (Table 5.1), and that all heat transfer occurs between the rebar and the water (there is no heat exchange with the surroundings).A typical candy bar weighs about 2 oz (1.00 oz= 28.4 g).(a) Assuming that a candy bar is 100% sugar and that 1.0 g of sugar is equivalent to about 4.0 Calories of energy, calculate the energy (in kJ) contained in a typical candy bar.(b) Assuming that your mass is 58 kg and you convert chemicalpotential energy to work with 100% efficiency, how high wouldyou have to climb to work off the energy in a candy bar? (Poten-tial energy =mass XgXheight, where g=9.8 m/s².)(c) Why is your actual conversion of potential energy to workless than 100% efficient?
- Suppose that 120 g of water and 150 g of ethanol, which are at 5 °C and in different containers, are heated in the same heat source that supplies 8 kJ/min, until the alcohol reaches 25 °C. (Consider: specific heat of water is 1 cal/g °C and of ethanol is 0.6 cal/g °C). Answer: a) How long and at what temperature will the water reach until there is the same amount of heat that the system containing ethanol absorbed when it reached 25 °C? b) If the two systems are heated during the same period, theoretically which liquid should indicate a higher temperature? Explain in detail. c) Explain how interaction forces influence the thermal capacity and specific heat of materials.A silver cube with an edge length of 2.27 cm and a gold cube with an edge length of 2.62 cm are both heated to 81.2 ∘C and placed in 115.0 mL of water at 19.4 ∘C . What is the final temperature of the water when thermal equilibrium is reached? Substance Specific head (j/g*C) Density (g/cm3) Gold 0.1256 19.3 Silver 0.2386 10.5 Water 4.184 1.00An unknown metal with a specific heat of 0.385J/goC has an initial temperature of 65.4 oC. The metal is immersed in a foam cup containing 95.7g of water at 22.7 oC. If the final temperature of the water and the metal is 24.2 oC, what is the mass of the metal? The specific heat of water is 4.184J/goC. Please show your work