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
gladu [14]
3 years ago
13

Charlie is frying an egg in a pan located over a gas burner. He develops a model to determine the energy produced by the flame i

n the gas burner by calculating the energy absorbed by the egg. Which assumption will Charlie need to make in order for his model to be considered a closed system?
Chemistry
1 answer:
frosja888 [35]3 years ago
8 0

Answer: B.)

Explanation:  Heat flows from pan to sounroundings

You might be interested in
For a different reaction, the plot of the reciprocal of concentration versus time in seconds was linear with a slope of 0.056 M-
Bond [772]

Answer:

C_t=0.165M

Explanation:

From the question we are told that:

Slope K=0.056 M-1 s -1

initial Concentration C_1=2.2M

Time t=100

Generally the equation for Raw law is mathematically given by

\frac{1}{C}_t=kt+\frac{1}{C}_0

\frac{1}{C}_t=0.056*100+\frac{1}{2.2}_0

C_t=0.165M

4 0
3 years ago
Relate the intermolecular forces in hydrocarbons to their physical properties and uses
DENIUS [597]

The physical properties of alkenes and alkynes are generally similar to those of alkanes or cycloalkanes with equal numbers of carbon atoms. Alkynes have higher boiling points than alkanes or alkenes, because the electric field of an alkyne, with its increased number of weakly held π electrons, is more easily distorted, producing stronger attractive forces between molecules.

8 0
3 years ago
Which would be attracted most to a magnet?
Debora [2.8K]
Either iron or metal
8 0
3 years ago
HELP PLZ ITS A TEST.
tensa zangetsu [6.8K]

Answer:

The answer to your question is below

Explanation:

1 ) Which of the following is a chemical property.

A. Ability to become magnetic  this is wrong, it's a physical property

B. Ability to conduct electricity   this is wrong, it's a physical property

C. Ability to conduct heat   this is wrong, it's a physical property

D. Ability to react with acid This is the right answer

2 ) You heat two substances, A and B. Both substances change color. When cooled, substance B returns to its original color, but substance A does not. What most likely happened?.

A. Physical change occurred in both substances   This is wrong, a physial change only happens in substance B

B. A physical change occurred in substance A, and a chemical change occured in substance B.  This is wrong, a physical change occurred in substance B and a chemical change occurred in substance A.

C. A chemical change occurred in substance A, and a physical change occurred in substance B.  This is the right answer is exactly what happens

D. A chemical change occurred in both substances  This answer is wrong.

3 ) how many grams are in 2.5 pound sample? Express your answer in scientific notation with three significant figures. ( 1 pound= 453.592 grams).

Rule of three

    1 pound ------------------- 453.592 g

  2.5 pounds ---------------   x

  x = 2.5(453.592)/1

  x = 1133.98 g = 1.13 x 10³ g    letter D

7 0
2 years ago
Read 2 more answers
Determine the elements with these electron configurations
lakkis [162]
Use a periodic table. Count the exponent for your atomic number. So, 1s2 2s2 2p5= Fluorine
1s2 2s2 2p6 3s2 3p5= Chlorine
1s2 2s2 2p6 3s2 3p6 4s2 3d6= Iron
7 0
3 years ago
Other questions:
  • explain how fossils and other materials can tell us about the conditions of an area at the time it existed.
    7·1 answer
  • Identify the type of chemical reaction of cobalt (III) fluoride
    11·1 answer
  • What is Chronatography
    9·2 answers
  • Help! science what usually has the greasiest density 1. plasma 2. liquid 3. gas 4. solid
    14·2 answers
  • The addition of a base to water decreases the ph of a solution
    14·1 answer
  • Can anyone solve #2 or #3 i cannot figure them out
    8·1 answer
  • Drag and drop the correct component and reactants to fill in the equation for photosynthesis
    6·1 answer
  • Determine the energy released when an electrons transitions from n =3 to n = 2
    8·1 answer
  • Which of the following methods of making electricity results in dangerous radioactive waste
    9·1 answer
  • A scientist introduces an unknown type of particle into a cathode ray tube. The unknown particles travel in the same direction a
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!