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18 Dec 2019

30 g of silicon at 80.0 degrees Celsius is added to 70 mL of water at 20 degrees Celsius. Calculate the final temperature after the two substances are mixed together. The specific heat of water is 4.184 J/ g c and the specific heat for silicon is 0.7121 J/ gc. Show all steps. Thanks!

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An unknown substance has a mass of 19.3 g. The temperature of the substance increases by 12.9 degrees Celsius when 58.5 J of heat is added to the substance. What is the most likely identity of the substance? The table lists the specific heats of select substances.

Substance... Specific Heat (J/g degrees Celsius)

lead.... 0.128

silver.... 0.235

copper.... 0.385

iron.... 0.449

aluminum.... 0.903

water.... 4.184

In order to determine the specific heat of an alcohol, 200.00 grams at 12.17 degrees Celsius is combined with 130.00 grams of water at 53.78 degrees Celsius. Once thermal equilibrium is reached, the temperature of the mixture(water and alcohol) is 33.21 degrees Celsius. What is the specific heat of the alcohol?

Specific heat of water is 4.184 J/g *C

1. A 500 gram sample of hot mythril ore is submerged in a cold water bath. If the water experienced a change in heat of -58 kJ and the mythril ore experienced a temperature change of 4 kelvin, what must the specific heat capacity of the ore be? Have answer in units of J/g x degrees Celsius & show steps.

a. -0.43 J/g x degrees Celsius

b. -29 J/g x degrees Celsius

c. 0.029 J/g x degrees Celsius

d. 29 J/g x degrees Celsius

2. The following hypothetical circumstance takes place in a coffee-cup calorimeter. Dissolving 3 moles of a salt in 100 grams of water causes the temperature of the water to increase by 3 degrees Celsius. What is the enthalpy of this reaction? The specific heat capacity of water is 4.184 J/g x degrees Celsius

a. 1.255 kJ/mol

b. -225.9 kJ/mol

c. -0.4184 kJ/mol

d. -0.2259 kJ/mol

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30 g of silicon at 80.0 degrees Celsius is added to 70 mL of water at 20 degrees Celsius. Calculate the final temperature after the two substances are mixed together. The specific heat of water is 4.184 J/ g c and the specific heat for silicon is 0.7121 J/ gc. Show all steps. Thanks!

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30 g of silicon at 80.0 degrees Celsius is added to 70 mL of water at 20 degrees Celsius. Calculate the final temperature after the two substances are mixed together. The specific heat of water is 4.184 J/ g *c and the specific heat for silicon is 0.7121 J/ g*c. Show all steps. Thanks!

Related textbook solutions

Basic Chemistry

Principles of Chemistry Molecular Approach

Principles of Chemistry Molecular Approach

Chemistry: Structure and Properties

Chemistry: A Molecular Approach

Chemistry: A Molecular Approach

Principles of Chemistry: A Molecular Approach

Chemistry: The Central Science

Related questions

Weekly leaderboard

30 g of silicon at 80.0 degrees Celsius is added to 70 mL of water at 20 degrees Celsius. Calculate the final temperature after the two substances are mixed together. The specific heat of water is 4.184 J/ g c and the specific heat for silicon is 0.7121 J/ gc. Show all steps. Thanks!