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
Andru [333]
2 years ago
6

A pan containing 20.0 grams of water was allowed to cool from a temperature of 95.0 °C. If the amount of heat released is 1,200

joules, what is the approximate final temperature of the water?
75 °C
78 °C
81 °C
87 °C
Chemistry
1 answer:
34kurt2 years ago
4 0

Answer:

81 °C

Explanation:

This is a calorimetry question so a few things you will need for this. The calorimetry equation q=mcΔT & the specific heat of water (4.2J/g•°C). Other definitions are:

q = heat added/released by a sample

m = mass of sample

c=specific heat of sample

ΔT = change in temperature

from here we can rearrange the equation to state:

q/(mc) = ΔT

1200J/((20.0g)(4.2J/g•°C)) = ΔT

14°C = ΔT

If the starting temperature was 95.0°C and we know that the temperature was cooled by 14°C then the final temperature of the water would be 81.

You might be interested in
A _____ change occurs when a substance changes phase. physical chemical nuclear user: the latent heat of vaporization of ethanol
dezoksy [38]
<span> physical 

</span><span>about 200 calories of heat must be added to 1 gram of ethanol to convert it from a liquid to a gas</span><span>






</span>
3 0
3 years ago
Read 2 more answers
How do you solve questions 6 and 7
bearhunter [10]

I know the answer to your question but if you want me to answer this question first, I need your help with my question "How do I solve number 12? Quick please I need help ASAP!!!"

6 0
3 years ago
A molecule of composition is replicated in a solution containing unlabeled (not radioactive) GTP, CTP, and TTP plus adenine nucl
Lapatulllka [165]

Answer:

Please find the complete question in the attached file.

Explanation:

It would only be radioactive if the DNA molecule that employed the poly-T rand as templates. Its other molecule of the daughter would not have been radioactive as it did not need dATP for its replication. While each strand of the second molecule includes t, simultaneous reproduction dATP from both daughter molecules is needed so that each of those is radioactive.

8 0
2 years ago
A. Energy is transferred to different forms
Luden [163]

Answer:

A. Energy is transferred to different forms .

Explanation:

Hello!

In this case, we need to consider the law of conservation of mass and energy which states that mass and energy cannot be neither created nor destroyed, just modified; it means we can rule out B. and C. so far.

Moreover, since D. is actually true for combustion reactions because they are used to provide energy in industrial operations, this is not the concern here because a combustion reaction is not considered.

Therefore the correct option is A. Energy is transferred to different forms as the energy provided by Rose is transferred to the pendulum system .

Best regards!

3 0
3 years ago
Acid rain is produced when _______ mixes with the water of a raindrop.
goldfiish [28.3K]

The answer should be  B - Nitrogen Dioxide.

5 0
3 years ago
Other questions:
  • A 800g/cm³ boulder has a density of 8g/cm³ what is the volume
    6·1 answer
  • A small hummingbird flying around beats its wings with a frequency of 170 Hz. If the wavelength of the sound wave produced is 2
    10·1 answer
  • Fill in the blanks to determine the number of protons and electrons in an oxygen ion. (Consult the periodic table to determine t
    8·2 answers
  • A scientist studies the DNA of three different species. The DNA from species A is more similar to DNA from species B than DNA fr
    10·1 answer
  • Reason the Carbon Cycle is necessary to sustain life on Earth
    7·1 answer
  • 5487129m to three significant figures
    6·1 answer
  • Why is combustion an important reaction in the atmosphere?
    5·2 answers
  • Help help help !!!!!!
    5·1 answer
  • Petroleum is a mixture of many alkanes. The alkanes are separated and purified at oil refineries. What process decribes what hap
    6·1 answer
  • Choose all of the answers that describe beneficial microorganisms.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!