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
fgiga [73]
3 years ago
12

Which of the following cannot pass across the placenta?

Chemistry
2 answers:
zmey [24]3 years ago
7 0
Oxygen cannot pass through the placenta
S_A_V [24]3 years ago
3 0
The placenta is the structure that allows for transfer of wastes, oxygen, and
nutrients between the mother and the fetus.  The fetal blood comes extremely
close to the maternal blood in the placenta, but <em>there is no intermingling of fetal
and maternal <u>blood</u></em>.  The fetus and mother can even have, and often do have,
different blood types.
You might be interested in
Arrange the following in order of increasing bond strength of the carbon oxygen bond:
Brilliant_brown [7]

Answer:

The correct option is: Carbonate ion < Carbon dioxide < Carbon monoxide

Explanation:

Bond energy is defined as the average energy needed to break a chemical covalent bond and signifies the strength of chemical covalent bond.

The bond strength of a covalent bond depends upon the <u>bond length and the bond order.</u>

Carbon monoxide molecule (CO) has two covalent bond and one dative bond. Bond order 2.6

Carbon dioxide (CO₂) has two carbon-oxygen (C-O) double bonds of equal length. Bond order 2.0

Carbonate ion (CO₃²⁻) has three C-O partial double bonds. Bond order 1.5

Also, the bond length is <u>inversely proportional to the bond order and bond strength.</u>

Therefore, <u>order of C-O bond length:</u> Carbon monoxide<Carbon dioxide<Carbonate ion

<u>Order of C-O bond order</u>: Carbonate ion<Carbon dioxide<Carbon monoxide

<u>Order of C-O bond strength or energy</u><u>: Carbonate ion<Carbon dioxide<Carbon monoxide</u>

7 0
3 years ago
9. Which indicator would show a pH change from 6 to 7?
expeople1 [14]

Answer:

hi

Explanation:

because

6 0
3 years ago
Los hidrocarburos son compuestos organicos en cuyas moléculas contienen ....?
Misha Larkins [42]

Hydrogen and carbon atoms

Explanation:

Hydrocarbons are molecules that are made up of hydrogen and carbon atoms only.

They are made up of covalent bonds between the carbon and hydrogen atoms.

There is a wide range of hydrocarbons due to the unique properties of carbon.

Most of the hydrocarbons comes from crude oil, natural gas and coal.

When hydrocarbons burn, they produce water and carbon dioxide alone.

They are used as fuel in industrial processes because they produce heat energy.

learn more:

Hydrocarbons brainly.com/question/6126420

#learnwithBrainly

3 0
3 years ago
A gas has a volume of 5.0 L at a pressure of 50 kPa. What happens to the volume when temperature is held constant and the pressu
Leto [7]

2.0L        is the answer for sure

3 0
3 years ago
A student throws a 2kg ball at 4m/s. What is the ball’s momentum?
Vsevolod [243]
The answer is 8 m/s2
4 0
3 years ago
Other questions:
  • A substance that can donate a pair of electrons to form a covalent bond is known as a(n) _____ base.
    11·2 answers
  • The number of d-electrons in Fe2+ (Z = 26) is not equal to that of
    12·2 answers
  • What is a chromosome
    12·2 answers
  • Which of the following is a pure substance: sugar, salt water, or pepper? Explain how you know.
    12·2 answers
  • What is El Nino and La Nina, and how are they different?
    13·1 answer
  • Gaseous ethane, C2H6, burns in the presence of oxygen
    9·1 answer
  • A sample of helium has a volume of 3.49 L at 741 mmHg. What would be the volume if the pressure
    6·1 answer
  • 40 points, please help I seriously cannot fail this class and I am extremely confused. All you have to do is solve using dimensi
    7·1 answer
  • Hydrogen sulfide gas reacts with oxygen to produce sulfur dioxide gas and water according to the balance equation:
    6·1 answer
  • Find the mass of a 60 ML volume of water if the density of water is 1 g/mL
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!