Chemistry, 11.07.2019 15:00 dollar6219

How many fatty acids are in a phospholipid? request answer part b what functional feature(s) does the phosphate group contribute to the structure of a phospholipid? select all that apply. select all that apply. nonpolar group that avoids water place where bonds can form between adjoining phospholipids place to attach fatty acids negative charge to interact with water place to attach another small charged molecule?

Answers: 1

Show answers

Answers

Answer from: jamarstand

1. Answer;

-Two fatty acids

Explanation;

-Phospholipids have a hydrophilic head and a hydrophobic tail.

-The hydrophilic head includes a glycerol molecule attached to a single phosphate group, which is then attached to another small molecule. The phosphate group and its attachments are either polar or charged. Water molecules are polar and therefore are attracted to these charged regions of the phospholipid head.

-The hydrophobic tails are two fatty acids attached to the glycerol molecule of the head. Water molecules are not attracted to the tails because C-H bonds are relatively nonpolar and therefore do not result in charged regions in the tails.

2. Answer;

-negative charge to interact with water

-place to attach another small charged molecule

Explanation;

-Phospholipids vary in the small molecules attached to the phosphate group.

-Because the phosphate group and its attachments are either charged or polar, the phospholipid head is hydrophilic, which means it has an affinity for water.A phospholipid also has two "tails" made up of two fatty acid molecules, which consist of a carboxyl group with a long hydrocarbon chain attached.

Answer from: Quest

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = $25^oc$ = 298 k $)0^oc=273kelvins$

$o_3+3no\rightarrow 3no_2,\delta h_{reaction}=? [/)</p><p>[tex]\delta h_{no}=90.4kj/mol$

$\delta h_{no_2}=33.85kj/mol$

$\delta h_{o_3}=142.2kj/mol$

$\delta h_{reaction}=\sum \delta h_{products}-\sum\delta h_{reactants}=3\times\delta h_{no_2}-(3\times \delta h_{no}+\delta h_{o_3})$

$\delta h_{reaction}=33.85-(90.4+142.2)=-311.85kj/mol$

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

$v_{no}=12.00 l,v_{o_3}=8.50 l$

$pv_{no}=n_{no}rt=1atm \times 12.00 l=n_{no}\times 0.0821 atml/k mol \times 298 k$

$n_{no}=0.49 moles$

$pv_{o_3}=n_{o_3}rt=1atm \times 8.50 l=n_{o_3}\times 0.0821 atml/k mol \times 298 k$

$n_{o_3}=0.34 moles$

according to reaction 3 moles no are reacting with 1 mol of $o_3$ ,then 0.49 mol of no will react with $\frac{1}{3}\times 0.49$ moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and $o_3$ is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

$\delta h_{reaction}\times \text{moles of no}=-311.85kj/mol\times 0.49 mol=-152.80kj/mol$

Answer from: Quest

Standing in the sunlight and feeling the heat on your face (uv radiation is entering the skin, converting to infrared radiation, and is absorbed by your tissues)orstanding near a fire and feeling the heat on your skin (infrared radiation transfer)

Another question on Chemistry

Chemistry, 21.06.2019 23:00

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

Answers: 1

Answer

Chemistry, 22.06.2019 04:30

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery

Answers: 3

Answer

Chemistry, 22.06.2019 10:30

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

Answers: 1

Answer

Chemistry, 22.06.2019 20:30

Consider the following unbalanced equation for the combustion of hexane: αc6h14(g)+βo2(g)→γco2(g)+δh2o(g) part a balance the equation. give your answer as an ordered set of numbers α, β, γ, use the least possible integers for the coefficients. α α , β, γ, δ = nothing request answer part b determine how many moles of o2 are required to react completely with 5.6 moles c6h14. express your answer using two significant figures. n n = nothing mol request answer provide feedback

Answers: 2

Answer

You know the right answer?

How many fatty acids are in a phospholipid? request answer part b what functional feature(s) does t...

Questions