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
Karolina [17]
2 years ago
11

Which is an example of a chemical reaction?

Chemistry
1 answer:
Ainat [17]2 years ago
3 0

Answer:

B) Eating a antacid to calm your upset stomach.

Explanation:

You might be interested in
Quick electron emissions are called
vivado [14]

Answer:

<u>Beta</u><u> </u><u>decay</u>

Quick electron emissions are called <u>beta</u><u> </u><u>decay</u>

<em>Hope</em><em> this</em><em> helps</em>

5 0
3 years ago
The ΔHsoln is _____.
nydimaria [60]

Sometimes negative sometimes positive, your answer is B!

4 0
3 years ago
Calculate the pH of a 0.50 M HIO. The Ka of hypoiodic acid, HIO, is 2.3x10–11.0.305.325.479.474.80
never [62]

Answer:

pH = 5.47

Explanation:

The equilibrium that takes place is:

HIO ↔ H⁺ + IO⁻

Ka = \frac{[H+][IO-]}{[HIO]} = 2.3 * 10⁻¹¹

At equilibrium:

  • [HIO] = 0.5 M - x
  • [H⁺] = x
  • [IO⁻] = x

<u>Replacing those values in the equation for Ka and solving for x:</u>

Ka=\frac{x^2}{0.5-x}=2.3*10^{-11} \\x^2=(2.3*10^{-11})(0.5-x)\\x^2=1.15*10^{-11}-2.3*10^{-11}x\\x^2+2.3*10^{-11}x-1.15*10^{-11}=0\\x=3.39*10^{-6}

Then [H⁺]=3.39 * 10⁻⁶, thus pH = 5.47

7 0
3 years ago
Help PLEASE HELP PLEASE
Gennadij [26K]

Answer:

b. k+

Explanation:

4 0
3 years ago
What is the molar mass of water in the hydrate? FeSO4 • 7H2O
Rainbow [258]
M=7M(H₂O)

M=7*18.015 g/mol = 126.105 g/mol
5 0
3 years ago
Other questions:
  • the mass if an element is .007502 x 10^-26 g. find the Number of significant figures when the mass is converted to mg. (both mas
    11·1 answer
  • (1) How did Democritus characterize atoms?
    9·1 answer
  • Which is not an example of a vestigial structure
    15·2 answers
  • Please I'm not really sure.
    7·2 answers
  • Please help with this question!
    5·1 answer
  • Find the percentage compositions<br> CaCl2<br> Ca:<br> CI:
    7·1 answer
  • The last answer choice us D. Adding more of the chemical will hear the water but only up to a certain temperature
    15·1 answer
  • The proton number of barium (Ba) is 56. It is in Group II of the periidic table how many electrons would you expect a barium ato
    6·1 answer
  • The dictionary from #2 falls off the table. How much kinetic energy does it have just before it hits the floor?
    14·1 answer
  • If water is added to 50 ml of a 0. 04 M solution so that it fills a 200 ml beaker, what is the final concentration? M.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!