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
Anastaziya [24]
3 years ago
11

PLEASE HELP I will mark brilleint

Chemistry
1 answer:
zhuklara [117]3 years ago
6 0
1. b
2.a
3.c
I think . hope I get it right
You might be interested in
What is a Cilla ? What does it look like ? (In drawing )
vova2212 [387]

a short microscopic hairlike vibrating structure found in large numbers on the surface of certain cells.

Explanation:

either causing currents in the surrounding fluid, or, in some protozoans and other small organisms, providing propulsion.

3 0
3 years ago
Which one of the following will change the value of an equilibrium constant?
Ad libitum [116K]

Answer:

(E) changing temperature

Explanation:

Consider the following reversible balanced reaction:

aA+bB⇋cC+dD

If we know the molar concentrations of each of the reaction species, we can find the value of Kc using the relationship:

Kc = ([C]^c * [D]^d) / ([A]^a * [B]^b)

where:

[C] and [D] are the concentrations of the products in the equilibrium; [A] and [B] reagent concentrations in equilibrium; already; b; c and d are the stoichiometric coefficients of the balanced equation. Concentrations are commonly expressed in molarity, which has units of moles / 1

There are some important things to remember when calculating Kc:

-  <em>Kc is a constant for a specific reaction at a specific temperature</em>. If you change the reaction temperature, then Kc also changes

- Pure solids and liquids, including solvents, are not considered for equilibrium expression.

- The reaction must be balanced with the written coefficients as the minimum possible integer value in order to obtain the correct value of Kc

8 0
3 years ago
9. What are the advantages of using an indicator to inform pH measurements? What are the advantages of using a pH meter?
Llana [10]

Answer:

The advantages of using an indicator to inform pH measurements:

It gives a mathematically result of the pH, in addition, it gives the precise pH of solvent, and it also gives an idea of the straight of the solution also.

Now, the advantage of using a pH meter:

It is a rapid method to characterize between acids, bases. However, this method does not show how strong acid or base actually are, plus it tends to gives a range of acidity or basicity not quite accurate as a result.

3 0
3 years ago
Which part of an of the helium atom is positively charged
olchik [2.2K]
Nucleus because it is made of protons (which means positively charged)
6 0
3 years ago
Difference between proton and oxygen.​
Zielflug [23.3K]

Answer:

Proton is a sub atomic particle while oxygen is an atom ....

6 0
1 year ago
Read 2 more answers
Other questions:
  • Compared to atoms of metals atoms of nonmetals generally have
    15·1 answer
  • if you were trying to heat soup would you want to use a good thermal conductor or good thermal insulator? explain your answer
    6·2 answers
  • How much heat in kilojoules is required to heat 56 l of water from 89 ∘f to 212 ∘f?
    5·1 answer
  • Static electricity is the buildup of electric charges in
    5·1 answer
  • What causes liquids to conduct electricity?
    9·1 answer
  • Using the mmoles of (35)-2,2,-dibromo-3,4-dimethylpentane calculated earlier and the molecular weight of the product (962 g/mol)
    6·1 answer
  • What might you expect to observe from this double-displacement reaction: CoCl2(aq) + Na2SO4(aq) ---&gt; CoSO4 + 2NaCl?
    12·1 answer
  • True or False. Physical changes result in the formation of a new substance.
    8·1 answer
  • How are the aurora borealis formed?
    5·1 answer
  • How many people were considered undernourished in Latin America and the Caribbean in 2018?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!