(a) A 2-inch piece of two-layer chocolate cake with frosting provides 1670 kJ of energy. What is this in Cal?   (b) If you were on a diet that calls for eating no more than 1200 Cal per day, how many joules would you consume per day?

Q: In the calibration of a calorimeter, an electrical resistance heater supplies 100.0 J of heat and a…

A: Calorimetry refers to measurement of heat change associated with a physical or chemical change. The…

Q: How much heat (in joules) is used to heat an 80.88-gram sample of iron from 3.59 °C to 100 °C if the…

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Q: 2. How many grams of water would require 2200o joules of heat to raise its temperature from 34.0°C…

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Q: The decomposition of 10.0 g of ammonia requires 27,200 J of energy to give hydrogen and nitrogen…

A: Heber process: It is the industrial technique to produce ammonia from nitrogen and hydrogen gas. The…

Q: Lead, water, suitur and arsenic have specific neats or .18, g-1 °C-1, respectively. Which of the…

A: Given,         The specific heats of Lead, water, sulfur, and arsenic are 0.128, 4.18, 0.706, and…

Q: Suppose that the total mass of the reactants in a chemical reaction was 100.00000 g. How many…

A: Given: Total mass of reactants = 100.00000 g. And the total mass of products formed = 99.99900 g.

Q: The specific heat of a certain type of cooking oil is 1.75 J/(g⋅°C). How much heat energy is needed…

A: The mass of oil and the temperature change (ΔT) is given.

Q: Assuming that 400J of energy is put into 7.50 g of iron, what will be the change in temperature ?…

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Q: from the combustion of hydrazine, N₂H4, is used to power rockets into space in the The energy…

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Q: For comparison, the atomic bombs dropped on Hiroshima and Nagasaki released between 54 and 96…

A: “Since there are multiple questions in this question and it is not mentioned that which one has to…

Q: How much heat in joules is needed to raise the temperature of 4.5 L of water from 0°C to 89.0°C?

A: Formula for heat taken to change the temperature is:

Q: 2. If a metal has a mass of 27 q and it requires 420 J of heat energy to increase temperature from…

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Q: How much heat is released when a 260.0 g plate of copper tools from 5.30 x 10^2K to 20.0C?

A: The specific heat capacity for a given chemical substance or a solution refers to the amount of the…

Q: What is the average kinetic energy of argon atoms at a temperature of 115°F?   What is the average…

A: Given: Temperature (TF) = 115°F   Or TK = (TF + 459.67)×(5/9) Or TK = (115 + 459.67)×(5/9) Or TK =…

Q: It takes 1250 J of energy to heat a certain sample of pure silver from 12.0 °C to 15.2 °C .…

A: Given: Mass of silver=? g Temperature change, ∆T=(15.2-12.0)°C=3.2 °C The ennergy needed, q =1250 J…

Q: The specific heat of a certain type of cooking oil is 1.75 J/(g⋅°C). How much heat energy is needed…

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Q: How much energy is needed to change the temperature of 39 g of water from 10.0 °C to 95.0 °C?

A: Since water remains in liquid form from 10°C to 95°C . Heat required, Q = mcp(l) ∆T ,where m is the…

Q: What is the final temperature of a 5 gram sample of gold ( c = 0.129 J/goC), initially at 220C,…

A: Given, for Question 5) effusion time of Argon gas =45 secwe are asked to calculate the effusion time…

Q: A light bulb consumes energy at a rate of 80.0 joules per second . How long in seconds will it take…

A: Given ; rate = 80 j/s

Q: How much energy (kJ) is released when 2.30 kg of gold is cooled from 88°C to 22°C?

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Q: If the specific heat of gold is 0.13 J/(g°C), how much heat is needed to raise the temperature of a…

A: Here we are asked to calculate the amount of heat needed to raise thetemperature of a   20 gram…

Q: A piece of aluminum with mass of 5.0 g is immersed in 35.0 g of water. This system is heated…

A: Given: Mass of aluminium = 5.0 g Mass of water = 35.0 g Change in temperature is 26.6 to 38.2 oC…

Q: 2. How much heat is needed to change the temperature of 4kg Iron from 15 °C to 28°C?

A:

Q: If the specific heat of butanol is 1.59 J/g-°C, how much energy is required to heat 21.8 grams of…

A: Given, mass of butanol=21.8 graminitial temperature Ti =45 °Cfinal temperature Tf =95 °Cspecific…

Q: What is the change in energy of a gas at a pressure of 135 kPa, if the gas loses 250 J of energy as…

A: A gas is compressed from 42.8L to 31.3L at a pressure of 135KPa. The gas loses 250J of energy. What…

Q: How many grams of carbon are present if it requires 57.5 kJ of energy to heat a sample from 20.0 to…

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Q: Given: 4 NH3 (g) + 3 O2 (g) → 2 N2 (g) + 6 H2O (l)  ΔH = -1500 kJ How many grams of ammonia (MM =…

A: Mass = number of mols x molar mass Given balanced equation suggests that: 1500 kJ energy is released…

Q: If 1001 J of heat is available, how many grams of iron (specific heat = 0.45 J/g･°C) can be heated…

A: The equation is:

Q: If 246,000 J of energy are required to raise 10 kg of sodium from 15°C to 35°C, what is the specific…

A: Given :-  q = 246000 J  Mass of sodium (m) = 10 kg  Initial temperature = 15°C  Final temperature =…

Q: If 601 J of heat is available, how many grams of iron (specific heat = 0.45 J/g･°C) can be heated…

A: The amount of available energy is = 601 J The specific heat of iron is = 0.45 J/g･°C Increase in the…

Q: How much energy is required to raise the temperature of 11.9 grams of solid iodine from 21.8 °C to…

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Q: When 435 Joules of heat is addesd to 3.4 grams of olie oil at 21°C, its temperature increases to…

A: Q=mC∆T Where,     Q= amount of heat (J)    m = mass of…

Q: Using information in the figure above, calculate the total world energy consumption in 1975. i x 10…

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Q: If 335 g of water at 24.5°C absorbed 2.66 kj of energy, what is the final temperature of the water?

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Q: 4. How many milliliters of water at 23 °C with a density of 1.00 g/mL must be mixed with 180 mL…

A: We know that specific heat is the amount of heat required to raise the temperature of 1 g of…

Q: How many joules are required to heat 340 grams of water from 25oC to 125oC?

A: Given: Mass (m) = 340 g = 0.340 kg Initial temperature (T1) = 25°C Final Temperature (T2) = 125°C

Q: what is the unit, including its prefix, for 10^-6 of the derived unit for energy?

A: The ability to do work is called energy.

Q: Heat capacity is the number of joules (J) per Kelvin (K). The heat capacity was 15.080 J/K. What is…

A: Given: Heat capacity in J/K = 15.080 J/K.

Q: An adult eats food whose nutritional energy totals approximately 2400 Cal oer day. The adult burns…

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Q: Calculate the energy (in kJ) required to heat 0.355 grams of water from 106.0 ℃ to 177.4 ℃.

A: Answer      Q = mCvdT    m = .355 gm, Cv = 4.18 j/g°C, dT = (177.4…

Q: How many calories are released by 231 grams of iron decreasing in temperature from 294℃ to 65℃?

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Q: If we have a 45.0 g block of aluminum that is at 22ºC and heat it up with 1545 J of energy, what…

A: Since, specific heat of Al= 0.9 J/(g℃) so, Q = mCv∆T

Q: How much energy (in KJ) is there in 125 g of chocolate with with an energy density of 5 cal/g?

A: To solve this problem, first calculate energy in calorie in 125g of chocolate using energy density…

Q: If a glove with a mass of 78.0 grams composed of cotton increases in temperature by 16.7 °F, how…

A: The question is based on the concept of specific heat capacity.   amount of heat required to raise…

Q: 1. A 1.60g sample of a metal that has the appearance of gold requires 5.8J of energy to change its…

A: Given,  Mass of the metal = 1.60 g  Initial temperature = Ti = 23.0 0C Final temperature = Tf = 41.0…

Q: How many grams of water would require 2,247 joules of heat to raise its temperature from 36.86 °C to…

A: Solution - According to the question - Given - Given the heat of water = 2,247 joules change in…

Q: Anthracite coal, 1.0 g, produces 7.000 x 10° cal when burned. How many joules of energy does this…

A: We know that, calories of energy is related to Joules as,                  1 cal = 4.184 J…

Q: 4. The heat capacity of copper is 0.382 J/g°.C. A 22.6 g sample of copper at 93° C is placed in 50 g…

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Q: When 7.59 grams of ice at space minus 20 C have absorbed 2500 calories of heat, what is the…

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Q: Suppose that the total mass of the reactants in a chemical reaction was 100.00000 g. How many…

A: