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
Talja [164]
4 years ago
10

a good sample of benzoic acid melts at 121-122. however, a student had a sample of benzoic acid that melted over a range, 105-11

5. what could the student concllude about his sample?
Chemistry
1 answer:
tatyana61 [14]4 years ago
8 0

Answer:

The student conclude that the sample of benzoic acid is impure.

Explanation:

The observed melting point of benzoic acid when a student melts his/her sample is low than the actual value. The reason for this might be:

(a) <u>The most probable reason is that the sample is impure. Impurities in the sample leads to lowering the value of the melting point.</u> The reason for the phenomenon is that when impurity is present in the compound, the pattern of the crystal lattice disturbs and thus it less amount of heat is require to break the lattice.

(b) There may be some experimental errors like:

  1. Non-uniform heating of the sample
  2. The sample is not tightly filled in the capillary if the student is    following Kjeldahl's flask method.
  3. If the student is using melting point machine, there there might be some instrumental errors.

<u>The student conclude that the sample is impure.</u>

You might be interested in
Someone send me a pic of a safety cartoon [drawn] neatly and all it needs is
Slav-nsk [51]
Just make a list of rules and draw it
4 0
3 years ago
....Which is the best classification for West Nile virus?
Luba_88 [7]

Answer:

The answer is F

Explanation: Only because Henrieta wasn't the sister that got kicked out

5 0
3 years ago
Read 2 more answers
Find the normality of 0.321 g sodium carbonate in a 250 mL solution.
Radda [10]

Answer:

the normality of the given solution is 0.0755 N

Explanation:

The computation of the normality of the given solution is shown below:

Here we have to realize the two sodiums ions per carbonate ion i.e.

N = 0.321g Na_2CO_3 × (1mol ÷ 105.99g)×(2eq ÷ 1mol)

= 0.1886eq ÷ 0.2500L

= 0.0755 N

Hence, the normality of the given solution is 0.0755 N

5 0
3 years ago
Explain what would happen to the air temperature at Riverdale School over the course of the
Ira Lisetskai [31]

Answer:

In each Amplify Science unit, students figure out

a phenomenon by asking questions, gathering

evidence, and coming up with an explanation of how

the phenomenon works. The Coherence Flowchart

visually represents the storyline of the unit, showing

the coherent flow of questions, evidence, and ideas that

support students as they build complex explanations

of the unit’s anchor phenomenon. The Coherence

Flowchart on the following pages (one chapter per

page) can be used to see the connections between

the questions that drive students’ experiences, the

evidence they gather, the ideas they figure out, and the

new questions that those ideas generate. The diagram

to the right explains the structure of a chapter in the

Explanation:

7 0
3 years ago
Let’s say that you have a solvatochromic compound that appears red in a solvent. You dissolve the compound in another solvent an
EastWind [94]

Answer:

Hypsochromic compound, More polar solvent

Explanation:

Hypsochromic shift refers to the shift of solution colour to blue side of the visible spectrum (blueshift) with increasing polarity of the solvent. In our case, the solution changes to orange colour from red when solvent is changed. This means that the emission spectrum of the solution underwent blueshift. (As orange colour is on the 'blue' side for red colour.) So this is a hypsochromic shift, and the new solvent is more polar that the previous one, as it caused hypsochromic shift.

7 0
3 years ago
Other questions:
  • Do the solubility of all ionic solids increase as temperature increases?
    12·1 answer
  • Classic c fires include what?
    10·1 answer
  • The frequency of stretching vibrations is correlated to the strength and stiffness of the bond between two atoms. This can be th
    6·2 answers
  • What is an atom<br> plz help
    11·2 answers
  • A characteristic used to describe something is called a
    8·2 answers
  • What is the volume of a 56g sample with a density of 2.5 g/ml?
    12·1 answer
  • Sam wants to conduct an investigation of the velocity of a golf ball when hit off of the tee using the scientific method. Review
    5·2 answers
  • Please help me out with this please....
    9·2 answers
  • Define ionic bond and explain the formation of nacl and mgo
    6·1 answer
  • Why are there sometimes warm days during a cold winter? (not chemistry, its actually science)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!