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
Andreas93 [3]
2 years ago
10

Which particle model diagram represents a chemical change

Chemistry
1 answer:
In-s [12.5K]2 years ago
5 0

Answer:

The atoms have been rearranged. To put it another way, it created a new substance.

You might be interested in
Why can't polyatomic ions ever stand alone?
Basile [38]
The prefix "poly-" means "many," and "atomic" refers to atoms, so a polyatomic ion is made of 2+ atoms covalently bonded together. These ions are charged, which is why they can never stand alone. 
7 0
3 years ago
What is the chemical process of breaking down food and realeasing energy?
Sergeu [11.5K]
This  process is called aerobic respiration.
5 0
3 years ago
Titration of a 20.0-mL sample of acid rain required 1.7 mL of 0.0811 M NaOH to reach the end point. If we assume that the acidit
Rasek [7]

Answer:

Concentration of sulfuric acid in the acid rain sample is 0.0034467 mol/L.

Explanation:

Volume of NaOH = 1.7 ml = 0.0017 L

Molarity of NaOH = 0.0811 M

Moles of NaOH = n

0.0811 M=\frac{n}{0.0017 L}

n = 0.0001378 mol

H_2SO_4+2NaOH\rightarrow Na_2SO_4+2H_2O

According to reaction, 2 mol of NaOH neutralize 1 mol of sulfuric acid.

Then 0.0001378 mol of NaOH will neutralize:

\frac{1}{2}\times 0.0001378 mol=6.8935\times 10^{-5} mol of sulfuric acid.

Concentration of sulfuric acid in the acid rain sample: x

x=\frac{6.8935\times 10^{-5}}{0.02 L}=0.0034467 mol/L

Concentration of sulfuric acid in the acid rain sample is 0.0034467 mol/L.

7 0
3 years ago
The boiling point of water is a _____ property and is equal to _____.
Reptile [31]

Answer:

The boiling point of water is a physical property and is equal to 0 C.

The Correct Answer is : C

3 0
3 years ago
Read 2 more answers
A test tube contains a pure colourless gas. It is either oxygen,carbon dioxide,hydrogen or nitrogen. When a burning splint is pu
tekilochka [14]

The next test would be the lime water test.

Explanation:

If placing the gas in lime water will turn the solution milky, then the gas is most probably carbon dioxide, the lime water (Ca(OH)₂) turns milky due to the formation of solid CaCO₃ that is insoluble after reaction with carbon dioxide.

Carbon dioxide also puts out the flame in the splint test because it does not support combustion.

4 0
3 years ago
Other questions:
  • How to know what elements are least likely to form ions?
    12·2 answers
  • How many moles of sodium chloride can react with 18.3 liters of fluorine gas at 1.2 atmospheres and 299 Kelvin?
    13·1 answer
  • Consider the following reaction: CH3OH(g)⇌CO(g)+2H2(g) Part A Calculate ΔG for this reaction at 25 ∘C under the following condit
    5·1 answer
  • An element's atomic number is 40. How many electrons would an atom of this element have?
    6·1 answer
  • You are measuring the density of an irregularly shaped object. Using the analytical balance you determine the mass of your objec
    10·1 answer
  • Why is it important for scientists to keep testing a hypothesis even after they’ve found it to be true?
    11·1 answer
  • A conversion factor is a fraction that is always equal to what number
    5·1 answer
  • Justify the<br>the importance of solar enengy as on <br>alternative source of energy in Nepal​
    10·1 answer
  • When 18.0 g H20 is mixed with 33.5 g Fe, which is the limiting reactant?
    12·1 answer
  • State the postulates of Dalton's atomic theory. ​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!