A sample of water is cooled from 45 degrees Celsius to 25 degrees Celsius by the removal of 20 calories of heat. What is the mass of water

Q: Two units of measurement for energy are calories and joules. The measurement of 32.3 kj is the same…

A: Energy can be measured in Joules as well as in Calories and Joule is the SI unit of energy.…

Q: a 43.0 g piece of hot iron is placed in 158.1 g of water with an initial temp of 23.9 degree…

A: Heat lost or gained is calculated by the formula Q=mcΔTwhere,Q=heatm=massc=specific heat…

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: Before heating 4 qt. saucepan 8 qt. stockpot 24.5 °C Temp. 24.5 °C Temp. After heating for 5 minutes…

A: Water has specific heat constant of 4.184 J per g per oC which means that 4.184 J of energy is…

Q: A 12.48g sample of an unknown metal, heated to 99.0˚C was then plunged into 50.0mL of 25.0˚C water.…

A: Given, Mass of the sample = 12.48 g Initial Temperature of water = 25.0 oC Final temperature of…

Q: One cup of clam chowder contains 27 g of carbohydrate, 15 g of fat, and 9 g of protein. TABLE 3.7…

A: Food type kcal/g kJ/g Carbohydrate 4 17 Fat 9 38 Protein 4 17

Q: How many times more kinetic energy does the dump truck have than the car?

A: Given: Mass of sub compact car =1.6×103 Kg Mass of dump truck =1.70×104 Kg Speed of both truck and…

Q: An 85.0 g piece of copper is heated to 98.7 degrees C.The copper is then quickly put in to water…

A: Answer:- This question is answered by using the simple concept of calorimetry which states that heat…

Q: A Chemistry 1A student drops 65.0 grams of copper (cp = 0.385 J/g⋅°C) with an original temperature…

A:

Q: How many grams of water at 100 c could be changed from liquid to gas if 4320 calories of heat were…

A: Here we have to use standard value of heat of vaporization of water. Using that value we can…

Q: The specific heat of Uranium is 0.12 Joules / Uranium x Celcius. Convert the specific heat of…

A: Given :  Specific heat of  uranium = 0.12 Joules / gram x Celsius

Q: Calculate the energy needed to heat the cube of silver, with a volume of 10.0 cm, from 18 °C to 26 "…

A: Given : Volume of silver cube = 10.0 cm3 = 10.0 mL                                   (since 1 cm3 =…

Q: Question is attached

A: Which of the following units are equivalent to joule: (a) calorie (b) Kg m-1 s-2 (c) L atm (d) Kg m2…

Q: 1. Consider the following food label Serving Size 2tsp (5g) Serving per container about 5 Amount per…

A: To answer questions about the given food label.

Q: When 435 J of heat is added to 3.4 g of olive oil at 21 degrees C, the temperature increases to 85…

A: Given: Mass of olive oil is 3.4 g. Heat transferred is 435 J. The initial temperature is 21° C. The…

Q: Equal masses of the 3 substances were left to sit in the sun at the same time and for the same…

A: Answer :- Lithium  Lithium has largest specific heat value, it heated slowly compared to Titanium…

Q: What is the specific heat of an object that goes from 20.7°C to 34.3°C when it absorbs 137 calories…

A: 1) Mass of the object is (m)=11.2 g 2) The initial temperature of an object is (Ti)=20.7°C 3) The…

Q: N2 (g) + 3 H2 (g) 2 2 NH3 (g) + 100 KJ

A: Le Chatelier principal explained the effect of concentration, temperature and pressure on…

Q: A piece of metal with a specific heat of 0.57 J g-1°C-1 at 1188 °C is dunked into a beaker…

A: Given,  Mass of water = Volume × density      = 369.7 × 1 = 369.7 g Heat capacity of metal(sm) =…

Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

A: Energy can have several units like kJ, kcal, BTU

Q: If the specific heat of water is ca increase the temperature of 75 g of water by 30 °C? 1gx1°C» how…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: What is the specific heat of an object that goes from 23.6°C to 33.7°C when it absorbs 126 calories…

A: The amount of heat per unit mass required to rise the temperature of a body to one degree Celsius .

Q: In the US, nutritional energy is reported in Calories (Cal). One nutritional Calorie is equal to one…

A:

Q: what is the specific heat of something that goes from 23.6 degree celcius to 33.7 degree celcius…

A: Using conservation of energy equation   Q=mC∆twhereQ=heat energy m=mass of substanceC=specific heat…

Q: 4. An athlete eats food in order to get energy for their competition that day. What type of energy…

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Q: A piece of metal weighing 80.10 g was heated to 99.3°C and then put into 41.55 g of water (initially…

A: Given: The mass of metal, (mm)=80.1 g. The mass of water, (mw)=41.55 g. The initial temperature of…

Q: A piece of metal weighing 83.60 g was heated to 99.6°C and then put into 41.90 g of water (initially…

A: Introduction: Specific heat: The quantity of heat required by a 1mole of substance to raise the…

Q: Perform each conversion between energy units. 3.71×106 kJ to kcal Express the value in kilocalories…

A: 1 Kcal = 1000 cal  1cal = 4.184J 1Kcal = 4.184J

Q: If you mix 20.0 g of hot water at 90.0 °C with 30.0 g of cold water at 20.0 °C, what is the final…

A: Recall the following relation       Amount of heatQ=m×C×∆tHere, mass of water=m         specific…

Q: A 45.9 g sample of a metal is heated to 95.2 degrees C and then placed in a calorimeter containing…

A: The heat capacity is the ratio of the energy supplied in the form of heat to the rise in the…

Q: 1. 2M(s)+6HCl(aq)⟶2MCl3(aq)+3H2(g)2M(s)+6HCl(aq)⟶2MCl3(aq)+3H2(g) Δ?1=−699.0 kJΔH1=−699.0 kJ 2.…

A:

Q: 1. For the following questions, respond using one of the four options: A. Higher B. Lower C. Same D.…

A: Basic of Heat Flow and Enthalpy of Reaction

Q: A piece of cobalt (cp = 0.46 J/g⋅⋅°C) originally at 98.6 °C is placed into a coffee cup calorimeter…

A: Specific heat of cobalt =  0.46 J/g°C  Initial temperature of Cobalt = 98.6 °C Final Temperature of…

Q: A list of the calorie content of foods indicates that an enchilada contains 230. Calories. Express…

A: A list of the calorie content of foods indicates that an enchilada contains 230. Calories. We have…

Q: A 0.82 g corn chip burns and heats 50 g of water from 22.1 degrees C to 27.8 degrees * C . If 0.23 g…

A:

Q: |The specific energy and density of gasoline is -47.3 MJ/kg and 716 kg/m³, respectively. What is its…

A:

Q: Enter your answer in the provided box. A 244-g aluminum engine part at an initial temperature of…

A: 16. Given information,    Mass of Al engine part = 244 g    Initial temperature = 11.19 0C = 284.19…

Q: How many calories are required to raise the temperature of 225g of water from 42.0 degrees Celcius…

A: Calories are required to raise the temperature of 225g of water from 42.0 degrees Celcius to 75.0…

Q: observes

A: Given: Weight of LiCl g 10.30 Weight of Water g 250.00 Initial T deg C 22.00 Final T…

Q: 110.0 g of iron is heated to 92.7 degrees C and then place in a container of water at 22.3 degrees…

A: we are given that  mass of iron = 110.0g Tinitial = 92.7° Tfinal = 22.3° initial temperature of…

Q: An adult eats food whose nutritional energy totals approximately 2100 Cal per day. The adult burns…

A:

Q: What is the mass of a piece of iron that releases 396.40 joules of heat as it cools from 64.28…

A:

Q: Question attached

A: The horsepower (hp) is related to power (watt) using the following unit conversion  1 hp =745.7 watt…

Q: For the following questions, respond using one of the four options: A.Higher  Lower    C. Same    D.…

A: Heat required by compound is determined by the knowledge of its mass, its specific heat capacity and…

Q: A gold ring with a mass of 5.50 g changes temperature from 25.0 to 28.0 degrees C. How much heat is…

A:

Q: 2116.16 J of energy is equivalent to how many calories?

A: Given :- 2116.16 J of energy  To calculate :- Energy in calorie.

Q: Drinking cold water actually causes the body to expend calories as your body warms it to body…

A: Step 1: When the temperature is increased for water or any matter the energy consumed is expressed…

Q: A2 (g) 3H2(g) 2NH3(g) is 1.64x104. Calculate Kc and Kx

A: This question is related to equilibrium constant.