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topjm [15]
3 years ago
9

Phospholipids, molecules found within a cell membrane, have hydrophobic tails and hydrophilic heads. These regions act in the sa

me manner that hydrophobic and hydrophilic amino acids act. When phospholipids are found as a sphere in a glass of water, which of the following would you expect?
a. The hydrophobic tails will point toward the water, and the hydrophilic heads will point away from the water.
b. The hydrophilic heads will point toward the water, and the hydrophobic tails will point away from the water.
c. Hydrophilic heads and hydrophobic tails will both point toward the water.
d. The hydrophobic tails and hydrophilic heads will be arranged randomly.
Chemistry
1 answer:
JulsSmile [24]3 years ago
3 0

Answer:

B

Explanation:

When a phospholipid is found in a sphere of water, the hydrophilic head is expected to point towards the water while the hydrophobic tail will point away from the water.

The term hydrophilic means water loving, So it is expected that the hydrophilic head will move towards water molecules at it has affinity for water molecules.

The opposite is the case for the hydrophobic tail. The hydrophobic tail moves away from water molecules

What these cases suggest is that both regions are acting base on their chemical make up. While the hydrophilic head contains molecules which are capable of interacting and bonding with water molecules, the hydrophobic tail contains strictly non polar molecules which are not capable of water interaction. Hence the interactions a phospholipid has with water is through its head region

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How many grams of iron(II) chloride are needed to produce 44.3 g iron(II) phosphate in the presence of excess sodium phosphate?
zalisa [80]

Answer:

47.2 g

Explanation:

Let's consider the following double displacement reaction.

3 FeCl₂ + 2 Na₃PO₄ → Fe₃(PO₄)₂ + 6 NaCl

The molar mass of Fe₃(PO₄)₂ is 357.48 g/mol. The moles corresponding to 44.3 g are:

44.3 g × (1 mol / 357.48 g) = 0.124 mol

The molar ratio of Fe₃(PO₄)₂ to FeCl₂ is 1:3. The moles of FeCl₂ are:

3 × 0.124 mol = 0.372 mol

The molar mass of FeCl₂ is 126.75 g/mol. The mass of FeCl₂ is:

0.372 mol × (126.75 g/mol) = 47.2 g

5 0
3 years ago
Factors that remain the same throughout an experiment? What is the word
Jobisdone [24]
Their called constants
3 0
3 years ago
Pat paid $85.50 for renting a scooter for 6 hours. What was the rate per hour for renting the scooter? (Input only numeric value
wlad13 [49]
I believe the answer would be 14.25 an hour because $85.50/ 6 would be 14.25 but i could be wrong. 

3 0
2 years ago
A material with the density of 2.7 grams/mL occupies 35.6 mL. How many grams of the material are there?
Hoochie [10]

Answer:

The mass of material is 96.12 g .

Explanation:

Density:

Density is equal to the mass of substance divided by its volume.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

D=m/v

D= density

m=mass

V=volume

Symbol:

The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.

Given data:

density of material = 2.7 g/mL

volume= 35.6 mL

mass= ? (in g)

Now we will put the values in the formula,

d= m/v

m=d×v

m= 2.7 g/mL × 35.6 mL

m= 96.12 g

so, the mass of material is 96.12 g .

8 0
3 years ago
What is the bond order of c2−?express the bond order numerically?
diamong [38]
MO Diagram of C₂⁻ is shown below, 

Bond order is calculated as,

             Bond Order  =  [# of e⁻s in BMO]-[#of e⁻s in ABMO] / 2
Where,

BMO  = Bonding Molecular Orbital

ABMO  =  Anti-Bonding Molecular Orbital

Putting values,

             Bond Order  =  [9]-[4] / 2

             Bond Order  =  5 / 2

             Bond Order  =  2.5

6 0
3 years ago
Read 2 more answers
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