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
AleksandrR [38]
3 years ago
15

Suppose it took 108 joules of energy to raise a bar of gold from 25 °C to 29.7°C. Given that the specific heat capacity of gold

is 0.128 J/g °C, what is the mass (in grams) of the bar of gold?
Chemistry
1 answer:
Lady bird [3.3K]3 years ago
3 0

Answer:

m = 180 g

Explanation:

Given data:

Energy absorbed = 108 J

Mas of gold = ?

Initial temperature = 25°C

Final temperature = 29.7 °C

Specific heat capacity of gold = 0.128 J/g.°C

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT =29.7 °C - 25°C

ΔT = 4.7 °C

108 J = m ×0.128 J/g.°C ×4.7 °C

108 J = m ×0.60 J/g

m = 108 J/0.60 J/g

m = 180 g

You might be interested in
What happens as liquid water boils?
Licemer1 [7]

Answer:

C) The molecules become separated from each other.

Explanation:

5 0
3 years ago
What is the atomic number of pt-175 after it undergoes alpha decay
DanielleElmas [232]

Answer:

76

Explanation:

Alpha decay is one of the most basic forms of radioactive decay. It has an atomic mass of 4 and a proton number of two.

Undergoing an alpha decay will decrease the atomic mass by four and the atomic number by two.

In this particular question, we are particular about the atomic number. The atom has an atomic number of 78. So taking 2 off this gives 76

5 0
2 years ago
What is the difference between fusion and melting?
photoshop1234 [79]
Fusion is joining two or more things together in resulting of the form of one thing
Melting is to make something liquefied by the use of heat
4 0
3 years ago
Please hurry and tell the answer to:
Flura [38]

Answer:

6.50 g of Hydrogen

Explanation:

We know that in every 20.0g of sucrose, there are 1.30g of hydrogen.

We now have 100.0g of sucrose. 100.0g is 5x larger than the 20.0g sample, which is a 5 : 1 ratio. Applying this ratio to the amount of hydrogen, we would have 5*1.3g of hydrogen in the 100.0g of sucrose.

5*1.3 = 6.5, so our answer is that there are 6.50g of hydrogen in 100.0g of sucrose.

Hope this helps!

5 0
1 year ago
How does distance affect work pls quick its 15 points pls keep it short pls help!!!!
ra1l [238]
The simple equation used to calculate work is force multiplied by distance, thus as this is the case increasing the distance by a certain amount, assuming the force applied to the object is constant, the amount of work you are doing on the box for instance pushing it, is going to be greater

Since you are pushing the box with the same force covering a greater distance with the force.
4 0
2 years ago
Other questions:
  • What is the the wavelength of light with a frequency of 230<br> Hz??
    13·1 answer
  • There are two main ways that minerals are classified. Which identifies those two main ways?
    10·2 answers
  • A carbon atom has a strong tendency to do which of the following?. Answer. double bond with electrons. receive electrons. donate
    14·2 answers
  • How are atoms of the same element with different mass numbers called?
    6·1 answer
  • For each of the following reactions, identify another quantity that is equal to DeltH degree rxn.
    6·1 answer
  • Calculate the molarity of a solution that contains 2.25 mol of NaNO^3 dissolved in 3.00 L.
    13·1 answer
  • Zora wants to dissolve a solute in a solvent quickly. Which best describes what she should do?
    5·1 answer
  • Compare and contrast the carbon cycle of 1500 and of 2021
    11·1 answer
  • Using the solubility curves, approximately how many grams of NaNO3 can be dissolved in 100. grams of water at 80 °C?
    6·2 answers
  • If you were to look up at the moon and see the shape of the moon as a circle, what would the next observable shape in the cycle
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!