How much heat is absorbed by 77 g of ice when it melts? The heat of fusion of ice is 80. cal/g and the heat of vaporization of ice is 530 cal/g. Record your answer in units of calories, rounded to the nearest whole number. Do not write units in your answer.

Q: convert 457 calories to joules?

A: Given : Value in calories = 457 cal.

Q: Identify two forms of energy that are involved in each of the following energy conversions relating…

A: Energy can neither be created nor destroyed. They can only be converted from one form to another.

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: The combustion of a peanut releases 6 kcal of heat. Convert this energy to J.

A: Thermodynamics is the branch of chemistry which deals with the study of heat and other forms of…

Q: Classify the different properties of petroleum products and explain the significance of measuring…

A: Physical properties of petrolium products Density Vapour pressure Surface tension  Flash point…

Q: 1. Classify the following as physical or chemical changes and exothermic or endothermic processes.…

A: If a process is reversible that by applying opposite force or any other way we get the same product,…

Q: Rank the physical and chemical changes in order of decreasing of the amount of energy released: (a)…

A: If the quantity of water that is condensed in and subsequently precipitated from a cloud is known,…

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: 115. This molecular drawing shows images of acetone mol- ecules before and after a change. Was the…

A: Physical properties are the properties of a compound which can be measured and determine the state…

Q: law of conservation

A:

Q: Which of the following units are used to measure heat? Select all that apply. Kelvin Celsius…

A: Heat is a type of energy and the heat of a system can be measured by measuring the temperature of…

Q: How many grams of natural gas (CH4) must burn to emit -249 kJ of heat? CH4 + 202 --> CO + 2H20 AH =…

A: Enthalpy change = -802 kj/mol Amout of heat required = - 249 kj

Q: B2. Graphing the heating curve for water 120 100 80 60 40 20 15 20 25 0. 10 Time (Min) °C B3.…

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

Q: 1.If your temperature changes from 20oC to 25oC—how much change is there in the mass of a 10.00 mL…

A: 1. Initial temperature(T1) = 20°C                              Final temperature(T2) = 25°C Initial…

Q: PLS ANSWER THE FOLLOWING QUESTIONS

A: The solution is given below -

Q: You burn a 0.6 g jellybean to warm 13 g of water, which increases the temperature of the water 2 °C.…

A:

Q: What are the 4 states of matter?

A: To identify: 4 states of matter.

Q: high-performance heater that burns propane, C3H8(g), is adjusted so that 100.0 g of O2(g) enters the…

A: .According to the question, high-performance heater that burns propane, C3H8(g), is adjusted so that…

Q: The combustion of 45.0 g of methane (natural gas) releases 2498 kJ of heat energy. How much energy…

A:

Q: How much heat is absorbed by 68 g of ice when it melts? The heat of fusion of ice is 80. cal/g and…

A: 1) Mass of Ice is (m)=68 g 2) The heat of fusion of ice is (L)=80 cal/g

Q: How many calories 5000 Joules are?. No computation, no points

A: There are different units of heat-  1- joule 2- calorie

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: lead ball is added to 158 grams of water in a coffee cup calorimeter.  If the ball loses 47.35 °C of…

A:

Q: Use the following information to answer question 1. A group of students is asked to design and…

A: To answer the following question.

Q: 4. Which of the following statements best describes what happens when chocolate melts? a) This is a…

A: Physical Change - These are the changes that change the shape, size, color, state, etc. A physical…

Q: 31) H,O, H", heat OH

A: Benzene diazonium salts gives phenol in presence of H2O.H+ Again phenol undergoes coupling reaction…

Q: Calculate the amount of heat needed to melt 93.3 g of solid hexane (C,Hj4) and bring it to a…

A: Heat absorbed or released in a chemical reaction(Q) is related with specific heat(c) related as Q =…

Q: We use the density of water to calculate the mass of water from its volume. The density of water at…

A: Given, density of water =0.998 gmLvolume of water in calorimeter filled =104.6 mLwe are asked to…

Q: density of the sample

A: Heat absorbed by a substance is given by Heat(q) = ms.□T Where,  m = mass of  sample s = specific…

Q: If 132 g of ice at 0.0°C is added to 1.64 L of water at 98°C, what is the final temperature of the…

A: a) Given: Mass of ice = 132 g. Initial temperature of ice = 0.0 oC Volume of water = 1.64 L = 1640…

Q: 62. List the energy conversions that occur in the process from the time water is about to enter a…

A: The law of conservation of energy states that energy can neither be created nor destroyed it can…

Q: X 26. In the question above, two liquids react together to form a solid. What term is given to this…

A: A precipitation reaction happens in aqueous solution because one product is not soluble. A insoluble…

Q: What is the difference between a physical and chemical change? Give at least three signs of a…

A: Difference  between  chemical  change  and  physical  change.  Physical change is a type of change…

Q: Energy can be divided into two types. What are these types and give an example of each.

A: Energy is the ability to do work: the ability to cause change: all energy can be transferred.

Q: What mass of natural gas (CH4)(CH4) must you burn to emit 261 kJkJ of heat?…

A: Heat of Combustion: The heat of combustion (ΔHc0) is the energy released as heat when a compound…

Q: 2.96×104 J  to Cal Express the value in Calories to three significant figures.

A: We know that, 1 Cal = 4.184 J  1 J = 1/4.184 Cal

Q: Which change will lead to a larger change in the kinetic energy of an object,doubling its mass or…

A: Ek      =   ½mv2

Q: How much heat, in Joules, is absorbed by 54 g of water in order to increase in temperature from 18°C…

A: Given that:  Mass of water = 54 g Increase in temperature , t =  (55-18 )oC = 37 oC

Q: Which of the following needs greater quantity of heat for 1 kg of water? a. freezing it b. Freezing…

A:

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

A:

Q: Which action describes a chemical change caused by a change in temperature? O boiling an egg in a…

A: Option A is correct.

Q: Question attached

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

Q: m Calculate the kinetic energy of a 67. g bullet moving at a speed of 499.

A: Given : mass of bullet = 67. g             speed = 499. m/s  To be calculated :- kinetic energy (J)

Q: Calculate the amount of heat needed to boil 15.5 g of hexane (C,H4), beginning from a temperature of…

A:

Q: convert 531 J to calories

A: Energy can be expressed in different units such as Joules , ergs ,calories , electron volts ,…

Q: At certain pressures, ClF forms a solid that sublimes when heated. Using a few words  and a simple…

A: Subliming is an endothermic phase transition in which a solid turns directly into a gas without…

Q: How many joules of heat are required to change 563 grams of solid ice with a temperature of 260…

A:

Q: How many kilocalories are lost when 580g of water cools from 67 degrees celsius to 22 degrees…

A: Given : Mass of water = 580 g Initial temperature of water = 67 oC And final temperature of water =…

Q: A student noticed a yellow, solid substance was formed when mixing two clear liquids during a lab.…

A: It is not a physical change because chemical reaction is taking place between two liquids to give a…