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
Vikki [24]
2 years ago
9

Is the dissolution of borax endothermic or exothermic.

Chemistry
1 answer:
Olin [163]2 years ago
8 0

Answer: Endothermic.

Explanation: ...

You might be interested in
The majority of water molecules moving across plasma membranes by osmosis do so via a process that is most similar to ____.
ValentinkaMS [17]

Answer:

The answer is Facilitated Diffusion

Explanation:

Osmosis is most similar to facilitated diffusion.

Osmosis can be defined as : Osmosis is the movement of water molecules across a semi-permeable membrane, down a concentration gradient from a low concentrated solution into a more concentrated solution.

Facilitated diffusion is defined as: Facilitated diffusion is the flow of molecules requiring the aid of a protein, across a membrane, down a concentration gradient  from a low concentrated solution into a more concentrated one.

4 0
3 years ago
Damian mixed two samples together: a
lesantik [10]

Answer:C

Explanation:

3 0
3 years ago
HEEEEELP ASAPP IM AWARDING 30 points!!!!
alexira [117]

Answer:

\rm S^{2-}.

Explanation:

Based on the electron configuration of this ion, count the number of electrons in this ion in total:

2 + (2 + 6) + (2 + 6) = 18.

Each electron has a charge of (-1).

Atoms are neutral and have 0 charge. However, when an atom gains one extra electron, it becomes an ion with a charge of (-1). Likewise, when that ion gains another electron, the charge on this ion would become (-2).

The ion in this question has a charge of (-2). In other words, this ion is formed after its corresponding atom gains two extra electrons. This ion has 18 electrons in total. Therefore, the atom would have initially contained 18 - 2 = 16 electrons. The atomic number of this atom would be 16.

Refer to a modern copy of the periodic table. The element with an atomic number of 16 is sulphur with atomic symbol \rm S. To denote the ion, place the charge written backwards ("2-" for a charge of (-2)) as the superscript of the atomic symbol:

\rm S^{2-}.

5 0
3 years ago
Read 2 more answers
What does lower case k stand for?
DaniilM [7]
Just for more clarification, lowercase k is the rate constant. Uppercase K is the equilibrium constant. You can actually use k to find K (equilibrium constant). K=k/k' This means that the equilibrium constant is the rate constant of the forward reaction divided by the rate constant of the reverse reaction
4 0
4 years ago
Is lithium a metal metalloid or non metal
KiRa [710]

Answer:

Metal

Explanation:

Lithium (Li), chemical element of Group 1 (Ia) in the periodic table, the alkali metal group, lightest of the solid elements. The metal itself—which is soft, white, and lustrous—and several of its alloys and compounds are produced on an industrial scale.

Atomic number: 3

Atomic weight: 6.941

5 0
4 years ago
Other questions:
  • Describe how oxidation and reduction involve electrons, change oxidation numbers, and combine in oxidation-reduction reactions.
    11·2 answers
  • Particles very far apart a solid liquid or gas
    10·2 answers
  • How many moles of NaCl are contained in 144 mL of a 1.65 M NaCl solution?
    9·1 answer
  • Write a balanced chemical equation for the reaction of aqueous solutions of lead(II) nitrate and potassium iodide
    13·1 answer
  • QUESTION 4
    5·1 answer
  • How do plants use the energy from the sunlight?
    12·2 answers
  • If 8.25 grams of lead II nitrate reacts, how many grans of sodium nitrate is produced?
    14·1 answer
  • Why do you see a flash of lightning before you hear the thunder during a storm?
    8·1 answer
  • Please help! Is there another way that 3.40x10^-19J can be imputed on a computer. I have the right answer but it is wrong.
    11·1 answer
  • Classify the following mixtures as a 'heterogeneous' or as a 'homogeneous' substance. gasoline [ Select ] soil [ Select ] cranbe
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!