Specific heat Definition and 465 Threads

Homework Statement Hello, I'm having some trouble with a lab report. I am supposed to find the specific heat of five metals but I don't know exactly how to use the equation correctly. for instance I have copper at 70.2g, the delta T at 1.8 degrees Celsius, specific heat of copper is 385...

For an ideal monatomic gas, the molar specific heat at constant volume, Cv=3/2R, where R is the gas constant. The heat capacity at constant volume of a gas is measured to be 43.58kJK-1. How many kg-moles of the gas are present? Iv tried looking in the lecture notes and in the...

Given the molar mass of Fe and the specific heat of Sn, what is the specific heat of Fe and the molar mass of Sn in approximate values?

Homework Statement Consider a linear array of N similar atoms, the separation between nearest neighbours being a. Discuss the specific heat of the system on the basis of the Debye approximation and show that at low temperatures, the specific heat would be expected to be proportional to T...

I am digging back thorugh thermodynamics textbooks, and am seeing insulation values etc. but none on how to solve for time required to heat a material. Here is the specific problem. I am trying to fgure out how long its takes to cool (or alternately heat) a concrete slab. The slab is 8...

Homework Statement The specific heat of substance X is 200 J/g*C, how much heat is required to change the temperature of 2.0 kilograms of substance X from 40 degrees Celsius to 55 degrees Celsius? Homework Equations Q=(m)(c)(change T) The Attempt at a Solution 55 C-40 C= 15 C...

Homework Statement A ball is thrown vertically downward strikes a surface with a speed of 15m/s. It then bounces, and reaches a maximum height of 5 meters. Neglect air resistance on the ball. a) What is the speed of the ball immediately after it rebounds from the surface? b)What fraction...

Homework Statement The specific heat of a certain metal can be determined by measuring the temperature change that occurs when a piece of the metal is heated and then placed in an insulated container that is made of the same material and contains water. Suppose the piece of metal has a mass of...

Hello, everyone. Homework Statement Now, I recently did an experiment in school to determine the Specific Heat Capacity of rubber using a calorimeter. We're using the mixing method to figure it out. The mass of the calorimeter, rubber and water was measured. And the S.H.C is already known...

Homework Statement Below about 80 K the heat capacity at constant volume for hydrogen gas (H2) is 3/2k per molecule, but at higher temperatures the heat capacity increases to 5/2k per molecule due to contributions from rotational energy states. Use these observations to estimate the distance...

Is it possible to find specific heat capacity given mass, initial and final temperature, and time? The liquid in question has not been given

Homework Statement 140 grams of boiling water (temperature 100° C, heat capacity 4.2 J/gram/K) are poured into an aluminum pan whose mass is 1100 grams and initial temperature 24° C (the heat capacity of aluminum is 0.9 J/gram/K). After a short time, what is the temperature of the water...

1. The tangential frictional force exerted by a band brakes on a rotating metal drum of circumference 0.25m is found to be 20N. If the mass of the drum is 0.4kg and its specific heat capacity is 0.35 kJ/kg K, calculate the number of complete revolutions of the drum are required to increase its...

Homework Statement A 34 g block of ice is cooled to -75°C. It is added to 562 g of water in an 80 g copper calorimeter at a temperature of 22°C. Find the final temperature. (The specific heat of copper is 387 J/kg ·°C and the specific heat of ice is 2090 J/kg ·°C. The latent heat of fusion...

Homework Statement A certain substance has a mass per mole of 55 g/mol. When 284 J is added as heat to a 32.0 g sample of this material, its temperature rises from 22.0°C to 39.5°C And I know that the specific heat of this substance is 507.14 J/[kg(K)] Homework Equations Q =...

Homework Statement Beryllium has roughly one-half the specific heat of liquid water (H2O). Rank the quantities of energy input required to produce the following changes from the largest to the smallest. In your ranking, note any cases of equality. (Use only the symbols > or =, for example...

Hi, Can someone please give me some suggestions on how to use a microwave oven to determine the specific heat capacity of tap water? This is not a homework question, but an assignment and I have absolutely no idea how I can do this.This experiment will be done at home, so please no immersion...

Homework Statement Is it possible to convert ml to grams for a Heat Capacity and Specific Heat type of problem? The problems that I have done so far did not use ml at all. I am stuck with the following problem: A piece of stainless steel (specific heat = 0.50 J g-1 oC-1 ) is taken from an...

When 13 grams of a sample cools from 56◦C to 34.4◦C it loses 25.8 Joules of heat. What is the specific heat of the sample? Answer in units of J/g ·◦ C. I know it seems simple, but I completely forgot how to do this. Please help.

Homework Statement Homework Equations i have a problem solving this foe my lab report..i just don't get the formula heres the data: ethylene glycol...its mass is 200 g ,initial temperature 22C, temperature after heated 100C what is its heat capcity? metal and water mass of...

Homework Statement One mole of an ideal diatomic gas undergoes a transition from. a to c along the diagonal path What is the change in internal energy? Homework Equations The Attempt at a Solution I've tried to use the two other paths since the internal energy is the same both...

Homework Statement A quantity of 100g of ice at 0°C and 50g steam at 100°C are added to a container that has 150g water at 30°C. What is the final temp of the container? Ignore the container itself in the calc. Homework Equations Q=mc (change in T) Q=mLThe Attempt at a Solution I know how to...

i found the average specific heat of a metal through an experiment it is 200. my only problem now is identifying it. i have tried many website but can't find anything useful please make some suggestions

simple application please..o:)

can anybody tell me how the specific heat capacity varies with pressure and temperature for superheated vapors thanks

Homework Statement A system consists of N very weakly interacting particles at temperature T sufficiently high so that classical stat mech is applicable. Each particle has mass M and is free to perform one dimensional oscillations about its equilibrium position. Calculate the heat capacity...

if I have 3 materials and mixed it, can I compute for the specific heat of the "mixed" material? i have the data of the specific heat of each of the material and the precentage by weight. example: material 1 is 46% of the total weight, material 2 is 52% and material 3 is 2% cd =...

Just revising for my practical physics exam tomorrow and got stuck on this! not sure if its correct, just annpyed me that i was unsure! Homework Statement A vending machine for serving hot drinks has a tank of capacity 7.5 litres, and the manufactuurers say that 45 cups of hot water (at 99o...

Homework Statement An insulated cup contains 1kg of water initially at 20 C. 0.50 kg of ice, initially at 0 C is added to the cup of water. The water and ice are allowed to come to thermal equilibrium. The specific heat of ice is 2000 J/kg oC, the specific heat of water 4186 J/kg oC...

Homework Statement Were doing this lab that is related to finding the specific heat and heat of fusion of water. To put the lab simply we filled aluminum calorimeters with water that's around 35°C. After that we took a handful of ice and it into the calorimeter full of water and measured the...

When a 35 gram piece of some metal at 100°C is placed in water, it loses 775 calories of heat while cooling to 30°C. Calculate the specific heat capacity of this metal. Q = mc(DELTA)T T = 70 degrees C m = 35 g Q = 775 cal ?? When i plugged it in i got 0.34 but the program said it...

Homework Statement It takes 15 seconds to warm ice 15 degrees ( -15 degrees celsius to 0 degrees celsius). The ice has a mass of .25 kg. The energy is supplied at 530 W to the ice. Homework Equations Q = mc delta T The Attempt at a Solution I plugged in all the information for Q...

Newton's Law of Cooling Time Required to Cool (or heat) an Object [Also known as Newton's Law of Cooling] t=mCp(Ts-Tf)/Q Where; Q is the heat added (or being removed) from the object in watts m is the mass (weight) of the object in Kg Cp is the Specific heat of the object...

can anyone explain the relationship between specific heat and thermal conductivity?

specific heat problem...simple, but I am missing something ? Homework Statement Trying to beat the heat of the last summer, a physics grad student went to the local toy store and purchased a plastic child's swimming pool. Upon returning home, he filled it with 200 liters of water at 25 C...

I have been wondering, does specific heat capacity affect the rate of heat flow from one substance to another? For example if the substances at heated up to the same temperature then left outside until thermal equilibrium is reached. I would think the one with the larger specific heat...

Homework Statement How much milk at 11 degrees Celcius was added to 0.16 kg of coffee at 91 degrees Celcius if the final temperature is 76.8 degrees Celcius? Homework Equations Well my teacher explained how to rearrange cm∆T = cm∆T to somehow come up with an equation to solve for the...

Homework Statement How much ice was added to a 0.75 kg jug of lemonade at 15 degrees celcius if the final temperature of the jug is 8 degrees celcius? (Assume the lemonade has the specific heat capacity of water.) Homework Equations Q = cm∆T The Attempt at a Solution Well I think I...

Hi, I want to know how I could produce a solution with a high specific heat, meaning it could store a huge amount of energy for each celsius degree raised. Im planing on using water as the solvent but I am having a hard time finding the right ions or molecules to make this solution able to...

im doing a calorimeter experiment and need to find the specific heat capacity of the calorimeter, but always gets a negative answer. Initial temp = 23 C Final temp = 60 C Change in temp = 37 C Mass of calorimeter = 0.027645kg Mass of water = 0.1kg Specific heat capacity water = 4200...

Hoping someone could double-check for me... Homework Statement 1) A 90 g block of unknown metal is heated to 86 degrees C and put in an insulated cup with 175 g water at 23 degrees C. At equilibrium, they are both 25.8 degrees C. What is the specific heat of the metal block? 2) A well...

if I am doing a reaction of acids and bases, do i just use the specific heat capacity of 4.18J, or is there a different one for different solutions?!?

Homework Statement Derive the Following Equations: c = [(m_w*c_w + m_c*c_al) (T_e - T_i)] / m_s*(T_s - T_e) and L = (m_w*c_w + m_c*c_al) * (T_i - T_e) - m_I*c_w * [(T_e- T_m)/m_I] Homework Equations T_i - initial temp of water and calorimeter T_m - melting temp of ice T_e -...

I've read that: specific heat capacity at constant pressure = dU-W / m. dT dU = change in internal energy W = work done m = mass of gas dT = change in temperature ----------------------------------- However, shouldn't the right hand side equate to specific heat capacity at...

Homework Statement Let 25.2 J of heat be added to a particular ideal gas. As a result, its volume changes from 46.0 to 101.2 cm3 while the pressure remains constant at 1.0 atm. By how much did the internal energy of the gas change? 19.6 J is the answer which i understand how to get the...

specific heat of combustion?? help Homework Statement Chemical Properties of gasoline components Using C5 to C10 hydrocarbons, conduct an experiment to determine the effect of one property of the hydrocarbon on the specific heat of combustion. Homework Equations The Attempt at a...

Homework Statement Several small piece of aluminum, having total (combined) mass of 2.5 kg are placed in liquid nitrogen and, when removed, are at a temperature of -135C. The aluminum is transferred to an insulating container with 0.50 kg of water. The water is at 25.0C [ Ignore heat lost from...

Homework Statement I must find temperature at each state, for starters. This is a Diesel cycle with a non-isentropic compression process, but standard the rest of the way. The specific heat is variable with temperature. Fluid is air Givens: compression efficiency (\eta_{c}), initial...

Homework Statement The diagram below shows a one-dimensional row of 5 microscopic objects each of mass 410-26 kg, connected by forces that can be modeled by springs of stiffness 26 N/m (so each object can be modeled as if it were connected to a single spring of effective stiffness 4ks = 104 N/m...

I have an alloy and found the average specific heat of the metal to be 289 J/kg°C. I need to know what type of metal it is. I've looked at several different tables of specific heats, but can't find what I'm looking for. Can anyone help me?