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
k0ka [10]
2 years ago
9

A 45.0-gram sample of copper metal was heated from 20.0°C to 100.0°C. Calculate the heat absorbed, in kJ, by the metal.

Chemistry
1 answer:
s2008m [1.1K]2 years ago
5 0

Answer:

1.386 KJ

Explanation:

From the question given above, the following data were obtained:

Mass (M) of copper = 45 g

Initial temperature (T1) = 20.0°C

Final temperature (T2) = 100.0°C

Heat absorbed (Q) =..?

Next, we shall determine the change in temperature. This can be obtained as follow:

Initial temperature (T1) = 20.0°C

Final temperature (T2) = 100.0°C

Change in temperature (ΔT) =?

ΔT = T2 – T1

ΔT = 100 – 20

ΔT = 80 °C

Next, we shall determine the heat absorbed by the sample of copper as follow:

Mass (M) of copper = 45 g

Change in temperature (ΔT) = 80 °C

Specific heat capacity (C) of copper = 0.385 J/gºC

Heat absorbed (Q) =..?

Q = MCΔT

Q = 45 × 0.385 × 80

Q = 1386 J

Finally, we shall convert 1386 J to KJ. This can be obtained as follow:

1000 J = 1 KJ

Therefore,

1386 J = 1386 J × 1 KJ /1000 J

1386 J = 1.386 KJ

Thus, the heat absorbed by the sample of the sample of copper is 1.386 KJ.

You might be interested in
DONT SKIPP What type of bond will occur between lithium and bromine?
den301095 [7]
An ionic bond is formed between lithium and bromine.
4 0
3 years ago
HELP a #QUEEN out pls??
Anastaziya [24]

Answer:

what the acctual fhuck typa chinese algorithim is dis, youve got me bamboozled frffr

Explanation:

jk jk.........

__5___SiO2 + ___2___CaC2 → __5___Si + ____2___CaO + __4___CO2

4 0
2 years ago
The first periodic table that was developed arranged elements in order of atomic number.
ziro4ka [17]
Heyyy!!


Your answer is True.


Please mark it as brainliest.


Hope it helps you.
3 0
3 years ago
Read 2 more answers
How many significant figures are in this number? 22.0 grams
Inga [223]

Answer:

Hey there!

22.0 has three significant figures.

Let me know if this helps :)

6 0
3 years ago
A container of gas is heated from 250 K to 303 K. What is the new pressure if the initial pressure is 880 kPa? (Assume constant
evablogger [386]

Answer:

The new pressure at constant volume is 1066.56 kPa

Explanation:

Assuming constant volume, the pressure is diectly proportional to the temperature of a gas.

Mathematically, P1/T1 = P2 /T2

P1 = 880 kPA= 880 *10^3 Pa

T1 = 250 K

T2 = 303 K

P2 =?

Substituting for P2

P2 = P1 T2/ T1

P2 = 880 kPa * 303 / 250

P2 = 266,640 kPa/ 250

P2 = 1066.56 kPa.

The new pressure of the gas is 1066.56 kPa

5 0
3 years ago
Other questions:
  • If bacteria tried to “friend” you one Facebook, why would you accept? Why would
    9·1 answer
  • Describe the difference between an atomic element and a molecular element. Check all that apply. Check all that apply. Molecular
    7·1 answer
  • What does temperature measure?
    15·2 answers
  • Please help I will reward brainly
    15·1 answer
  • An element's atomic number is 40. How many electrons would an atom of this element have?
    6·1 answer
  • There are 360 degrees in a circle. How many arcminutes will be in 86% of a circle?
    13·1 answer
  • 3. the [OH-] of a solution with a [H+] of 9.3 x 10^-4 M
    12·1 answer
  • Graphite and diamond are both solid forms of the element carbon. Which statement explains
    14·1 answer
  • A fruit fly has black eyes. Having red eyes is a dominant trait (R) and having black eyes is a recessive trait (r).
    13·2 answers
  • Sample Response: Sponges release sperm into the water so that they can be drawn into another sponge. When this happens, a sperm
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!