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
ryzh [129]
2 years ago
12

When does the composition of a substance does not change?

Chemistry
1 answer:
blagie [28]2 years ago
4 0
I think when it does not react with anything I think
You might be interested in
If the pOH of vinegar is 9.45, what is its [OH− ]?
goldfiish [28.3K]

3.55 × 10n M n = -10

6 0
3 years ago
Read 2 more answers
describe how knowledge of the periodic table would be important in three different careers, based on what you’ve read.
ANEK [815]

The knowledge of periodic table would be important in these three different careers such as medicine, pharmacology and engineering.

<h3>What is the importance of periodic table in following careers?</h3>

Periodic table is organised the whole elements vertically in groups and horizontally in periods with increasing atomic number.

The knowledge of arrangement of these elements serves alot of purposes in the following three different careers:

  • Medicine: The element, iron is an important metal in the periodic table used in treatment of low blood levels.

  • Pharmacology: The transition metals are useful in the field of pharmacology for the production of drugs. Example of such elements are chromium, manganese, cobalt, nickel, copper, and molybdenum.

  • Engineering: The information of elements in the periodic table helps engineers in designing of materials used for constructions.

Therefore, the knowledge of periodic table is very important in these three different careers such as medicine, pharmacology and engineering.

Learn more about period table here:

brainly.com/question/15987580

5 0
2 years ago
Match these items.
notka56 [123]
Litmus is an indicator
Charged particles are ions
Acids contain H+ ions
Bases contain OH - ions
Hydronium ions are H3O+

Now, I have to take issue with the last one
A base of pH 14 is not a strong base, it would be a highly concentrated base. A strong base is a base that completely deionizes in water.

But technically, for the purpose of your answer strong base = pH 14
6 0
2 years ago
Has earth always had the same land masses and oceans that it has today? What will happen in the future, will they stay in the sa
icang [17]

Answer: The look of the Earth has changed over time but continents have always been part of the picture. They didn't always look the way they do today, but yes, there have always been continents on Earth. Earth's continents are constantly in motion, and by running the tape ... against southern Europe, while the Atlantic will be a far wider ocean than it is today. ... During the war, Hess had used sonar to map some areas of the ocean floor in detail. ... away from both sides of the mid-ocean ridge at the same rate.

7 0
2 years ago
Read 2 more answers
Number 6<br><br><br><br> Yususueudidididifididi
Furkat [3]
The answer is predict, because it fits, and because someone can predict the outcome of something.
6 0
3 years ago
Other questions:
  • What is the most abundant gas in our atmosphere? oxygen hydrogen nitrogen water
    8·2 answers
  • PLEASE HELP! I will give brainliest
    12·1 answer
  • The thin outer layer of Earth, called the crust, contains only 0.50 percent of Earth's total mass and yet is the source of almos
    14·1 answer
  • 9 What 11 letter word describes the chemical balance within an organism?
    12·1 answer
  • 30 POINTS TO WHOEVER CAN FIGURE IT OUT!!When is the sun directly overhead at the equator?
    12·2 answers
  • An alternative form or version of a gene is a(n):
    15·1 answer
  • What are the reactants in a cheese sandwich
    6·2 answers
  • What will a soccer player need to do to change a ball’s position?
    9·2 answers
  • Which type of reaction is <br> NaOH + KNO3 NaNO3 + KOH<br> --&gt;&gt;
    9·1 answer
  • Is gunpowder a homogenous mixture or a heterogenous mixture? Explain why.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!