A water heater contains 54 gal of water. How many kilowatt-hours of energy are necessary to heat the water in the water heater by 25 ∘C? Express your answer using two significant figures.

Q: 110. A portable electric water heater transfers 255 watts (W) of power to 5.5 L of water, where 1 W…

A: The energy of the electric water heater is the heat produced during the change of temperature from…

Q: The average adult human burns 2.00 × 10³ kcal per day in energy. What is this rate in kJ per hour?

A: The unit conversions are  1 kcal = 4.184 kJ To convert kcal into kJ , we need to multiply kcal with…

Q: if a gas stove releases 120 kJ of heat energy, what is the energy in kilocalories? (1 cal = 4.184 J)

A: Relation : 1 cal = 4.184 J 1 J = 14.184 cal 120 kJ = 120 x 14.184 kcal            = 28.68 kcal

Q: If the temperature of the surface of the sun is {5794) K, then calculate its value in Fahrenheit

A: The temperature of two systems is the same when the systems are in thermal equilibrium, physiology,…

Q: A 57.3 g sample metal with a specific heat of 0.421 J/g °C is heated using 1393 J of energy. By what…

A: The amount of heat (Q) absorbed or lost by the body to raise or decline the temperature of the body…

Q: If a wheelchair-marathon racer moving at 13.1 miles per hour expends energy at a rate of 655…

A: Given ;   Racer move=13.1 miles/hour  Expands energy=655 cal/hour  Energy required to complete…

Q: A college student produces about 101 kcal of heat per hour on the average. What is the rate of…

A: According to the rule of conversion of the unit, 1 cal is equal to 4.184 J So, (1×103) cal is equal…

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

A: Given information, Initial temperature of the water = 23oC Final temperature of the water = 45oC…

Q: A 3.00 kg sample of water is heated from 14 degrees celsius to 53 degrees celsius. How much energy…

A: Given,Mass of water = 3kgInitial temperature = 14 degrees CelsiusFinal temperature= 53 degrees…

Q: A coal-burning power plant generates 3.5 x 1016J per year. If the coal yields 37 kJ/g, how many…

A: The amount energy produced by coal burning power plant per year = 3.5 x 1013 kJ

Q: After heating up in a teapot, a cup of hot water is poured at a temperature of 209°F. The cup sits…

A: Given: Ta = the temperature surrounding the object = room temp.= 68oF To = initial temperature of…

Q: The specific heat capacity of liquid mercury is 0.14 J/g-k. How many joules of heat are needed to…

A: Given: The specific heat of Hg = 0.14 J/g-K or J/g-0C The initial temperature, (T1) =22.1 0C. The…

Q: How is kinetic and potential energy differ?  How are they related?  Please cite an everyday…

A: When an object is at rest the body is said to possess potential energy. in another case when the…

Q: THE LABEL ON THE POCKET OF NON-SUGAR SWEETENER INDICATES THAT IT PROVIDES 16 kJ OF NUTRITIONAL…

A: Please have a look on the solution attached :

Q: Imagine that your water heater has broken, but you want to take a bath. You fill your bathtub with…

A: Given :-  Mass of cold (room temperature) water = mcold water = 25 kg×1000g1Kg = 25000 g. Initial…

Q: A breakfast of cereal, orange juice, and milk mightcontain 230 nutritional Calories. Express this…

A: Given: A breakfast of cereal, orange juice, and milk might contain 230 nutritional Calories

Q: Classify the examples as demonstrations of potential energy or kinetic energy. Potential energy…

A: Answer Potential energy  :- energy in stationary phase…

Q: Explain the difference between heat and temperature. Does 1 L of water at 65°F have more, less, or…

A:

Q: Which of the following statements about energy is FALSE? Energy can be converted from one type to…

A: Energy is the capacity to do work. It can neither be created nor be destroyed and it convert from…

Q: Henrietta has a sample of a pure substance in a beaker. She heats the substance to a temperature of…

A:

Q: What is the mass of a piece of iron that releases 134.60 joules of heat as it cools from 93.13…

A:

Q: Classify each of the following processes as a physical change or a chemical change and as an…

A: Hydrochloric acid is a very strong acid which also vaporises at room temperature which makes it…

Q: Part C If distilled water sells in a grocery store for $1.32 per gal what percentage of the sales…

A:

Q: Kilocalories to heat 140 g of water from 15 C to 75 C. Express in two significant figures

A: The amount of heat energy absorbed by water by changing its temperature from 15oC to 75oC: where,…

Q: de (NaCl). The AHºd graph dd a File ous Page diss is +3.84 kJ/mol. BI UV A/ Record Audio Next Page…

A: Thermochemical reaction is equation which gives information about physical states of reactants and…

Q: what volume of water (in ml), initially at 54.3 C, needs to be mixed with 146ml of water, initially…

A: The formula used here is given below q=mC∆Twherem is the mass of sampleC is the specific heat and∆T…

Q: A 150-lb person burns about 2700 Calories to run a marathon. How much energy is burned in kJ? Assume…

A: A conversion factor is multiplied to change from one unit to another.

Q: If a gas stove releases 180kJ of heat energy, what is the energy in kilocalories? (1 cal = 4.184 J)

A: Thermodynamic  is branch of chemistry in which we deal with amount  of heat evolved or absorbed by…

Q: The average adult human burns 2.00 × 10³ kcal per day in energy. What is this rate in kJ per hour?

A: Given, energy burns by human in a day=2×103 kcal  In a day, there are 24 hours.  In 1 hour,energy…

Q: Convert 780. J to kJ

A: Given :  We have to convert 780 J to KJ.

Q: Which of the following units of energy is defined as the heat it takes to raise the temperature of 1…

A: Correct Answer - E) calorie  Because calorie is defined  as the amount  of heat is required  to…

Q: A 1,513,679 g car is traveling 0.965 m/s. Calculate the kinetic energy of the car in J, Do not put…

A:

Q: How much energy is required to raise the temperature of 47.05 mL of water from 25.52°C to 27.89°C?…

A:

Q: Identify each as a physical change (P) or a chemical change (C). Explain how you know this, or what…

A:

Q: Perform the following conversion: 575 calories to Joules (J)

A:

Q: Label each of the following statements as true or false. Iffalse, correct the statement.a. Energy…

A: a) The given statement is False because according to the law of conservation of energy (E), energy…

Q: The energy available from the world’s total petroleum reserveis estimated at 2.0 3 1022 J. Convert…

A: The energy available from the world’s total petroleum reserve is estimated at 2.0 X 1022 J. Convert…

Q: 1. A hot tub is filled with 570 gal of water a. What is the volume of water, in liters, in the tub?…

A: (a)Volume of water (in Liters) is calculated as follows,

Q: Round your answers to the correct number of significant figures. Only use numbers in your answer.…

A: Conversion of temperature into Kelvin scale: -173°C=-173+273.15K=100.15 K127°C=127+273.15K=400.15 K

Q: The average adult human burns 2.00 × 10° kcal per day in energy. What is this rate in kJ per hour ?

A: Given: Energy= 2.00×103 To find: The rate of energy in kJ per hour

Q: A 2.5 kg sample of copper at 24.1 degrees C experiences a change in temperature to 19.7 degrees C.…

A: The given problem can be solved by using the formula given below as; q = m C ∆T…

Q: When a 43.0 g piece of aluminum was placed in 250. g water at 20.4 degrees C, the temperature raised…

A: Given data: Mass of the aluminium, M = 43.0 g Specific heat of the steel, Caluminum = 0.900 J/g/oC…

Q: In a calorimetry experiment in a Chemistry for Engineers Laboratory class, a 12.9 - g sample of…

A: The addition of a certain amount of heat to a substance will alter its temperature. The change in…

Q: Part C If distilled water sells in a grocery store for $1.19 per gal. what peroentage of the sales…

A:

Q: Convert 51.7 calories to Joules. Answer in units of J.

A: One calorie is equal to 4.184 joules, 1 cal = 4.18 joules

Q: Energy consumption in the United States produced 4.57 x 10^6 metric tons of carbon dioxide emissions…

A: Given: Mass of CO2 = 4.57 X 106 metric tons.

Q: The energy transformation in the picture below shows a change from A. chemical to thermal and light…

A: The energy transformation taking place is given as,

Q: 1. Heat is best defined as massless substance emitted when something burns. a form of potential…

A: Heat is the form of energy that is transferred between two substances at different temperatures.The…

Q: a. 7.5 x 10' J to kilojoules b. 3.9 X 10 mg to decigrams c. 2.21 × 104 dL to microliters

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…