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
Dvinal [7]
2 years ago
13

The following data is collected after eluting a TLC plate containing three sample spots (A, B, and C): distance traveled by comp

ound A = 32 mm, distance traveled by compound B = 48 mm, distance traveled by compound C = 18 mm, distance traveled by solvent front = 64 mm and length of the TLC plate = 70 mm. What is the Rf value of compound C? Enter your answer using the proper number of significant figures.
Chemistry
1 answer:
RideAnS [48]2 years ago
3 0

Answer:

Rf = 0.26

Explanation:

The Rf value is calculated by dividing the distance traveled by a compound, by the distance traveled by the solvent front. In other words, the length of the TLC plate is not relevant in calculating a Rf value.

  • Distance traveled by compound C = 18 mm
  • Distance traveled by the solvent front = 70 mm
  • Rf = 18/70 = 0.26
You might be interested in
Developing countries use many more resources than do developed countries. True False
Svetach [21]
I will have to say that this statement is true
8 0
2 years ago
Which of the elements must be available in water for the metamorphosis of tadpoles?
Grace [21]
The element iodine (I) is important for the fast and hastened metamorphosis of frog-tadpoles. As amphibians, the tadpoles can live in water and land but when they are born they are iodine-deficient. Tadpoles that do not receive ample amount of iodine become tadpoles until the end of their days. 

8 0
3 years ago
When you transferred the hot metal from the boiling water and into the calorimeter (coffee cup), if the thermometer touched the
sergey [27]

When you transferred the hot metal from the boiling water and into the calorimeter,  The effect will be

  • Change in temp is positive
  • Temp of metal V, dT=-ve
  • No change occurs in the specific heat of metal

This is further explained below.

<h3>What is the Specific heat of the metal?</h3>

a )Since the metal of the cup is hot and the water inside is cold, the water's temperature will rise as heat is transferred from the metal to the liquid.

Change in temp is positive

b)

Due to (a), heat is lost from the food to the water in the cup, lowering the metal's temperature.

Temp of metal V, dT=-ve

c)

No change occurs in the specific heat of metal because of its constant property.

Read more about Temperature

brainly.com/question/13439286

#SPJ1

7 0
2 years ago
Read 2 more answers
If the half-life of a radioactive substances is 590 million years and you have 40 atoms of it, how many half-lives will have pas
Nady [450]

Answer:

3

Explanation:

Applying,

2^{n'} = R/R'............... Equation 1

Where n' = number of halflives that have passed, R = Original atom of the substance, R' = atom of the substance left after decay.

From the question,

Given: R = 40 atoms, R' = 5 atoms

Substitute these values into equation 1

2^{n'} = 40/5

2^{n'} = 8

2^{n'} = 2³

Equation the base,

n' = 3

3 0
2 years ago
Although both fission and fusion generate energy, fusion produces much more energy than nuclear fission and produces less nuclea
noname [10]
I believe that is true.
3 0
3 years ago
Read 2 more answers
Other questions:
  • You are walking on a beach and see a split. Explain how a split could have formed from a rocky headland.
    6·2 answers
  • The reaction a(g) + 2b(g) c(g) was allowed to come to equilibrium. the initial amounts of reactants placed into a 5.00 l vessel
    6·1 answer
  • PLEASE HELP ASAP!
    13·1 answer
  • Is it true that soaps are salts of sulfonic acids though some have been made from alkyl sulphonates​
    11·1 answer
  • Part a use valence bond theory to devise a hybridization and bonding scheme for co2. match the words in the left column to the a
    15·1 answer
  • A mixture of uneven distribution and easy separation is:
    7·2 answers
  • What is the mass number of sodium?
    5·2 answers
  • A 10.00 mL sample of a solution containing formic acid (a weak acid) was placed in a 25 mL volumetric flask and diluted to the m
    5·1 answer
  • A 4.16L balloon filled with gas is warmed from 251.5K to 298.4 K. What is the volume of the gas after it is heated?
    12·1 answer
  • There is a container on the lab bench containing some unknown chemical. what should you do?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!