1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Tasya [4]
3 years ago
14

An irregular lump of an unknown metal has a measured density of 5.50 g/mL. The metal is heated to a temperature of 153 °C and pl

aced in a graduated cylinder filled with 25.0 mL of water at 25.0 °C. After the system has reached thermal equilibrium, the volume in the cylinder is read at 30.0 mL, and the temperature is recorded as 41.0 °C. What is the specific heat of the unknown metal sample? Assume no heat is lost to the surroundings.
Chemistry
1 answer:
Oliga [24]3 years ago
7 0

Answer: 0.543J/g^0C

Explanation:

Volume of metal = volume of water displaced = (30.0 - 25.0) ml = 5.0 ml

Density of metal = 5.50 g/ml

Mass of metal =density\times volume =5.50\times 5.0=27.5g

Volume of water = 25.0 ml

Density of metal = 1.0 g/ml

Mass of metal =density\times volume =1.0\times 25.0=25.0g

heat_{absorbed}=heat_{released}

As we know that,  

Q=m\times c\times \Delta T=m\times c\times (T_{final}-T_{initial})

-[m_1\times c_1\times (T_{final}-T_1)]=[m_2\times c_2\times (T_{final}-T_2)]         .................(1)

where,

q = heat absorbed or released

m_1 = mass of metal = 27.5 g

m_2 = mass of water = 25.0 g

T_{final} = final temperature = ?41.0^0C

T_1 = temperature of metal = 153^oC

T_2 = temperature of water = 25.0^oC

c_1 = specific heat of lead = ?

c_2 = specific heat of water= 4.184J/g^0C

Now put all the given values in equation (1), we get

27.5g\times c_1\times (41.0-153)^0C=[25.0g\times 4.814J/g^0C\times (41.0-25.0)^0C]

c_1=0.543J/g^0C

Thus the specific heat of the unknown metal sample is 0.543J/g^0C

You might be interested in
You have 1 mole of a gas at STP. If you apply the ideal gas law what is the approximate volume of the gas?
goldfiish [28.3K]

Answer:

A) 22.4L

Explanation:

we know, ideal gas law states

PV=nRT

V=nRT/P

At STP,

T= 273.15K     P=1atm         R=0.082L.atm/mol/K          n=1 mole

V=(1*0.082*273.15)/ 1

V=22.4L

7 0
2 years ago
Is a mixture of toys a substance or homogeneous and heterogeneous mixture
Aleonysh [2.5K]

Answer:

homogeneous

Explanation:

one type of molecules

6 0
3 years ago
How many molecules units are in 4.5 moles of CF4
kobusy [5.1K]
1.0 mole ---------- 6.02x10²³ molecules
4.5 moles -------- ?

4.5 * 6,02x10²³ / 1.0

= 2.709x10²⁴ molecules units
7 0
3 years ago
You want to determine the concentration of a solid solute dissolved in a specified volume of liquid solvent which of the followi
Natali [406]
Generally, chemists prefer to use morality (B) because it only invovles measuring the final volume of the solution and amount of moles of the solute

Hope this helps
6 0
3 years ago
Read 2 more answers
Sodium chloride reacts with copper sulfate to produce sodium sulfate and copper chloride. mc011-1.jpg This equation represents a
Anarel [89]
This is a double replacement because both Copper and Sodium reacted with each other compounds , hence "double"
7 0
3 years ago
Read 2 more answers
Other questions:
  • Acetylenic compounds may be used as dienophiles in the Diels-Alder reaction. Write the structure for an adduct that you expect f
    5·1 answer
  • What is included in each square (element) on the Periodic Table? I'm looking for four things
    12·1 answer
  • Select all of the statements that are true about a buffer solution. Select one or more: a. A buffer solution reacts with basic s
    7·1 answer
  • How many atoms of carbon are found in a 30.0 gram sample of the element?
    13·1 answer
  • Identify the conjugate acid
    14·1 answer
  • Which formula is a molecular compound
    6·1 answer
  • An equimolar mixture of acetone and ethanol is fed to an evacuated vessel and allowedto come to equilibrium at 65°C and 1.00 atm
    15·1 answer
  • I need help! Thanks!
    5·2 answers
  • Help me which is it
    13·1 answer
  • Mohs hardness strontium
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!