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
Chất nào sau đây là chất điện li mạnh trong H2O
erica [24]

Answer:

những lựa chọn ở đâu?

Explanation:

Hy vọng nó sẽ giúp ích;>

3 0
3 years ago
Read 2 more answers
Angry pomeranian x bones? broken\broccoli boy anyone?
mezya [45]
Makes zero sense. What’s the question?
7 0
3 years ago
Grace runs 6miles in 2 hours what is her speed??
MAXImum [283]
Speed = miles / time
3 0
3 years ago
Read 2 more answers
What part of a chemical is represented by the letters
bonufazy [111]

Answer:

It's compound? It's chemical compound would be represented my letters or numbers

3 0
2 years ago
Read 2 more answers
Which two substances are covalent compounds? * C6H12O6(s) and KI(s) C6H12O6(s) and HCl(g) KI(s) and NaCl(s) NaCl(s) and HCl(g)
Ray Of Light [21]

Answer: Option (b) is the correct answer.

Explanation:

A covalent compound is defined as the compound in which sharing of electrons take place between the combining atoms. Generally, when two or more non-metals chemically combine together the it will lead to the formation of a covalent compound.

For example, C_{6}H_{12}O_{6} and HCl is also a covalent compound.

And, a compound in which transfer of electrons occur between the combining atoms is known as an ionic compound. Whenever, a metal chemically combines with a non-metal then it will always lead to the formation of an ionic compound.

For example, KI is an ionic compound.

Thus, we can conclude that C_{6}H_{12}O_{6} and HCl are the two substances which are covalent compounds.

7 0
3 years ago
Other questions:
  • In which liquid is hydrogen bonding strongest? 1. hf(l) 2. h2(l) 3. ch4(l) 4. nh3(l)?
    9·1 answer
  • A light microscope that has two or more lenses is called a ____________________ (compound, simple) microscope.
    7·2 answers
  • Which statement describes nuclear binding energy?
    8·2 answers
  • CH 4 History and Structure of the Atom
    5·1 answer
  • Color is not very helpful in mineral itdentification because
    10·1 answer
  • 5. If two gases are present in a contain the total pressure in the container is equal to ​
    11·1 answer
  • How many moles of calcium atoms are in 77.4g of Ca?
    7·1 answer
  • Which level of organization is formed when a group of organs work together to perform complex functions?
    13·2 answers
  • How can people conserve water at home?
    12·2 answers
  • SEP math! Each day, the average person's
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!