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
GenaCL600 [577]
3 years ago
7

Which of the following is the definition of an adaptation?

Chemistry
1 answer:
Serggg [28]3 years ago
6 0

Answer:

A

Explanation:

You might be interested in
HELP PLEASEEEEEEEE HELPPPPPPP (IMAGE)
lapo4ka [179]
1. Liquid
2. Gas
3. Solid
5 0
3 years ago
What is the molarity of a naoh solution if 39.1 ml of a 0.112 m h2so4 solution is required to neutralize a 25.0-ml sample of the
aleksandrvk [35]
The reaction between NaOH and H₂SO₄ is as follows;
2NaOH + H₂SO₄ ---> Na₂SO₄ + 2H₂O
stoichiometry  of base to acid is 2:1
NaOH is a strong acid and H₂SO₄ is a strong acid, therefore complete ionization into their respective ions takes place.
number of acid moles reacted - 0.112 M / 1000 mL/L x 39.1 mL = 0.0044 mol
the number of base moles required for neutralisation = 0.0044 x 2 = 0.0088 mol
Number of NaOH moles in 25.0 mL - 0.0088 mol
Therefore in 1000 mL  - 0.0088 mol/ 25.0 mL x 1000 mL/L = 0.352 mol/L
Therefore molarity of NaOH - 0.352 M

8 0
3 years ago
The reaction that occurs in a Breathalyzer, a device used to determine the alcohol level in a person's bloodstream, is given bel
Umnica [9.8K]

Answer:

The rate of disappearance of C₂H₆O = 2.46 mol/min

Explanation:

The equation of the reaction is given below:

2 K₂Cr₂O₇ + 8 H₂SO₄ + 3 C₂H₆O → 2 Cr₂(SO₄)₃ + 2 K₂SO₄ + 11 H₂O

From the equation of the reaction, 3 moles of C₂H₆O is used when 2 moles of Cr₂(SO₄)₃ are produced, therefore, the mole ratio of C₂H₆O to Cr₂(SO₄)₃ is 3:2.

The rate of appearance of Cr₂(SO₄)₃ in that particular moment is given 1.64 mol/min. This would than means that C₂H₆O must be used up at a rate which is approximately equal to their mole ratios. Thus,  the rate of of the disappearance of C₂H₆O can be calculated from the mole ratio of Cr₂(SO₄)₃ and C₂H₆O.

Rate of disappearance of C₂H₆O = 1.64 mol/min of  Cr₂(SO₄)₃  * 3 moles of C₂H₆O / 2 moles of Cr₂(SO₄)₃

Rate of disappearance of C₂H₆O = 2.46 mol/min of C₂H₆O

Therefore, the rate of disappearance of C₂H₆O = 2.46 mol/min

4 0
3 years ago
Just as heat can denature enzymes, so can a change in the pH. Enzymes that normally work in an acidic environment in the body ca
nikitadnepr [17]

Answer:

It will create an alkaline environment and can lead to denaturation of acidic enzymes.

Explanation:

<em>Taking too much antacids will significantly increase the pH of the stomach and create an alkaline environment within it. Consequently, enzymes that normally work in acidic environments in the body can become denatured or rendered inactive. This will create another problem for the individual.</em>

5 0
3 years ago
Read 2 more answers
Which of these describe the orbit of a typical comet? Select all that apply.
scZoUnD [109]

its a, c and e i think. the other guy who answered was incorrect so i dont really know the answer

6 0
3 years ago
Other questions:
  • HELLPPPPPPPPPPPPP<br> :((((((((
    13·2 answers
  • The mechanism for producing a concentrated urine involves all of the following except
    7·1 answer
  • What would a substance that could undergo condensation polymerization most likely have?
    11·2 answers
  • Identify three types of coral reefs
    15·1 answer
  • A) An iron nail is attracted to a magnet.
    10·2 answers
  • Rank the following substances/solutions in order of lowest boiling point to highest boiling point where 1 has the lowest boiling
    14·1 answer
  • What happens to weather patterns when a cold front approaches? Answer in complete sentences. Its timed!! YOU WILL GET BRAINLIEST
    15·1 answer
  • What is the parts of the nervous system
    5·2 answers
  • Which has a higher melting point KF or KI?
    7·1 answer
  • Which part of the Periodic Table of the elements is used to identify valence electrons? *
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!