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
disa [49]
3 years ago
15

Describe what happens in the cell before the chemical reaction.

Chemistry
1 answer:
Zina [86]3 years ago
6 0

___________________________________________________________

Answer:

Chemical reactions that take place inside living things are called biochemical reactions. The sum of all the biochemical reactions in an organism is referred to as metabolism. Metabolism includes both exothermic (heat-releasing) chemical reactions and endothermic (heat-absorbing) chemical reactions.

___________________________________________________________

You might be interested in
A chemistry graduate student is given of a chlorous acid solution. Chlorous acid is a weak acid with . What mass of should the s
DerKrebs [107]

Answer:

11.31g NaClO₂

Explanation:

<em> Is given 250mL of a 1.60M chlorous acid HClO2 solution. Ka is 1.110x10⁻². What mass of NaClO₂ should the student dissolve in the HClO2 solution to turn it into a buffer with pH =1.45? </em>

It is possible to answer this question using Henderson-Hasselbalch equation:

pH = pKa + log₁₀ [A⁻] / [HA]

<em>Where pKa is -log Ka = 1.9547; [A⁻] is the concentration of the conjugate base (NaClO₂), [HA] the concentration of the weak acid</em>

You can change the concentration of the substance if you write the moles of the substances:

[Moles HClO₂] = 250mL = 0.25L×(1.60mol /L) = <em>0.40 moles HClO₂</em>

Replacing in H-H expression, as the pH you want is 1.45:

1.45 = 1.9547 + log₁₀ [Moles NaClO₂] / [0.40 moles HClO₂]

-0.5047 = log₁₀ [Moles NaClO₂] / [0.40 moles HClO₂]

<em>0.3128 = </em>[Moles NaClO₂] / [0.40 moles HClO₂]

0.1251 = Moles NaClO₂

As molar mass of NaClO₂ is 90.44g/mol, mass of 0.1251 moles of NaClO₂ is:

0.1251 moles NaClO₂ ₓ (90.44g / mol) =

<h3>11.31g NaClO₂</h3>
5 0
3 years ago
NAME THESE COUMPANDS
alina1380 [7]

Answer:

propane -1 2 3 - trioic acid

8 0
2 years ago
What are the products in a sodium and water reaction?
UkoKoshka [18]

Answer:

Sodium Hydroxide

Explanation:

7 0
3 years ago
How is a polymer like a chain of paper clips
velikii [3]
A polymer is a really long chain of smaller molecules (monomers). It's similar to a chain of paper clips because all of the little monomers will attach to each other, forming a long strain.
3 0
3 years ago
Look at the image below:
PIT_PIT [208]

Answer:

The figure is a molecule and a compound

Explanation:

Because it have 2 cluster molecules

7 0
3 years ago
Other questions:
  • Let this be an easy 5 points to your brainly points all I ask is for you to answer with "thank you"
    8·1 answer
  • Flow of heat energy through liquids and<br> gases
    8·1 answer
  • What is the ph of a solution with [oh-] = 2.6 × 10^-3 m?
    14·1 answer
  • What type of bond is this?
    8·2 answers
  • Question 14 (8 points)
    12·1 answer
  • Please Help Why is laboratory safety important? Describe a scenario illustrating your reason(s).
    15·1 answer
  • Which statement describes how heat is transferred by radiation?
    7·2 answers
  • Pls help i am in 8th grade k12
    13·1 answer
  • Describe what you know about this chemical formula: 4CO2
    13·1 answer
  • the hcp ordered 0.2 mg of methylergonovine, and the vial contains 0.8 mg/ml. how many ml of methylergonovine should the nurse dr
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!