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
RideAnS [48]
2 years ago
9

Compare these examples of matter. Which of these is a pure substance and why? A Milk, because every portion of the matter is the

same, and its components can only be separated chemically. B Coffee, because every portion of the matter is the same, and its components can only be separated chemically. C Salt water, because every portion of the matter is the same, and its components can only be separated chemically. D Carbon dioxide, because every portion of the matter is the same, and its components can only be separated chemically.
Chemistry
1 answer:
-Dominant- [34]2 years ago
5 0

Answer:

B. Coffee

Explanation:

Coffee, because every portion of the matter is the same, and its components can only be separated chemically.

You might be interested in
What is atomic number of sodium​
FromTheMoon [43]

Answer:

Explanation:

Sodium is a chemical element with the symbol Na and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 of the periodic table. Its only stable isotope is ²³Na. The free metal does not occur in nature, and must be prepared from compounds.

5 0
2 years ago
Read 2 more answers
Consider the process in which HClO3 is converted to HClO2. The oxidation state of oxygen remains −2, and the oxidation state of
mixas84 [53]

Answer:

Option 1, Cl is reduced and gains electrons

Explanation:

HClO₃  → HClO₂

In HClO₃, chlorine acts with +5 in the oxidation state

In HClO₂,, chlorine acts with +3 in the oxidation state.

The state has been reducted, so the Cl has been reduced. As it was reduced, it means that has won e⁻, in this case 2

Cl⁻⁵  → Cl⁻³  +  2e⁻

8 0
2 years ago
: If you know that a ∝ b and a ∝ c, then you can also say that a ∝ bc, or the product of b and c. Take the above three proportio
aleksley [76]

Answer:

V ∝ abc

Explanation:

This task is a joint variation task involving only direct proportionality:

Direct variation is one in which two variables are in direct proportionality to each other. This means that as one increases, the other variable also increases and vice - versa.

Joint variation is one in which one variable is dependent on two or more variables and varies directly as each of them.

In this exercise:

If a ∝ b and a ∝ c, then a ∝ bc

Taking the above three proportionalities,

V ∝ a ∝ b ∝ c

V ∝ a ∝ bc

V ∝ abc

3 0
2 years ago
How does energy flow through the food chain?
yuradex [85]

Answer:

2nd order.

Explanation:

gras, grasshopper, frog, snake, eagle

Pleas mark branliest if you are satisfied with the answer. Thanking you in anticipation.

3 0
2 years ago
Read 2 more answers
Explain what the police siren sounds like to Jane. Explain what the police siren sounds like to John. Explain why the police sir
Ne4ueva [31]
Like siren They all sound the same
5 0
2 years ago
Read 2 more answers
Other questions:
  • Why is the metric system the preferred system of measurement for science
    9·2 answers
  • Which acid has the greatest acid dissociation constant?
    7·2 answers
  • Why are reactions of ionic compounds very fast?
    14·1 answer
  • What causes the appearance of lines in an emission spectrum?
    7·2 answers
  • In the first step, copper was oxidized by nitric acid to make a green solution. Water was then added to the solution and the col
    10·1 answer
  • Humans exhale carbon dioxide when they breathe. If the concentration of carbon dioxide in the air that
    10·1 answer
  • What evidence suggests that four-legged animals came from fish?
    15·1 answer
  • Smart people<br><br> Is water wet?<br><br> I need to know
    5·2 answers
  • What is the percent of hydrogen by mass in CH4O
    5·1 answer
  • Which of the liquids you tested (isopropyl alcohol, water, and glycerol) displayed the greatest surface tension (greatest interm
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!