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levacccp [35]
4 years ago
15

In addition to running aspartic acid, phenylalanine, aspartame and hydrolyzed aspartame, let's assume that you also ran leucine

on your TLC plate in this lab. Would you expect leucine to travel farther than or less than aspartic acid, and why?
A. Leucine is nonpolar, thus it should travel farther than aspartc acid on my TLC plate
B. Leucine is polar, thus i should travel less than aspartic acid on my TLC plate
C. Leucine is polar, thus it should travel farther than aspartic acid on my TLC plate
D. Leucine is nonpolar, thus should travel less than aspartic acid on my TLC plate.
Chemistry
1 answer:
KiRa [710]4 years ago
6 0
The correct answer is B.
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Why is ice less fence than liquid water?
vekshin1

because ice is water but in a solid form

8 0
3 years ago
You dissolve 8.65 grams of lead(II) nitrate in water, and then you add 2.50 grams of aluminum. This reaction occurs: 2Al(s) + 3P
Marysya12 [62]

Answer: A. 5.41

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}    

\text{Moles of} Al=\frac{2.50g}{27g/mol}=0.0926moles

\text{Moles of} Pb(NO_3)_2=\frac{8.65g}{331g/mol}=0.0261moles

2Al(s)+3Pb(NO_3)_2(aq)\rightarrow 3Pb(s)+2Al(NO_3)_3(aq)  

According to stoichiometry :

3 moles of Pb(NO_3)_2 require  = 2 moles of Al  

Thus 0.0261 moles of Pb(NO_3)_2 will require=\frac{2}{3}\times 0.0261=0.0174moles  of Al

Thus Pb(NO_3)_2 is the limiting reagent as it limits the formation of product and Al is the excess reagent.

As 3 moles of Pb(NO_3)_2 give = 3 moles of Pb

Thus 0.0261 moles of Pb(NO_3)_2 give =\frac{3}{3}\times 0.0261=0.0261 moles  of Pb

Mass of Pb=moles\times {\text {Molar mass}}=0.0261moles\times 207g/mol=5.41g

Thus 5.41 g of solid lead will be produced from the given masses of both reactants.

8 0
3 years ago
What happens when lead nitrate and potassium iodide are mixed?
lisov135 [29]

Answer:

Explanation: A yellow precipitate o lead iodide is formed. see equation of reaction below: 2KI + Pb(NO3)2 → PbI2 + 2K(NO3)2

Th PbI2 is the insoluble yellow precipitate

7 0
3 years ago
Scientists have discovered a colony of potential organisms on the Planet Moby and named them "Maxoids." Read the information bel
irga5000 [103]

The Maxoids are living things because they possess the characteristics of living things.

<h3>What are living things?</h3>

Living things are things which have life in them.

Living things are identified by the characteristics which make them living.

The characteristics of living things include:

  • Movement - living things are able to move all or parts of their body
  • Respiration - living things are able to break down food substances to produce energy
  • Nutrition - living things are able to take in food substances
  • Irritability - living things are able to respond to changes around them
  • Growth - living things are able to increase in size and mass
  • Excretion - living things are able to remove waste substances from their bodies
  • Reproduction - living things are able to produce new ones of their kind

Considering the Maxoids;

  • They are able to reproduce
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In conclusion, the Maxoids are living things.

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7 0
1 year ago
Read 2 more answers
A 15.0 L tank of gas is contained at a high pressure of 8.20x10 4 torr. The tank is opened and the gas expands into an empty cha
Alexxx [7]

Answer:

P₂ = 20.5 torr

Explanation:

Given data:

Volume of tank = 15.0 L

Pressure of tank = 8.20×10⁴ torr

Final volume of tank = 6.00×10⁴ L

Final pressure = ?

Solution:

The given problem will be solved through the Boly's law,

"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"

Mathematical expression:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = initial volume

P₂ = final pressure

V₂ = final volume  

Now we will put the values in formula,

P₁V₁ = P₂V₂

8.20×10⁴ torr  ×  15.0 L = P₂ × 6.00×10⁴ L

P₂ = 8.20×10⁴ torr  ×  15.0 L / 6.00×10⁴ L

P₂ = 123×10⁴ torr.L/ 6.00×10⁴ L

P₂ = 20.5 torr

7 0
3 years ago
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