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
Mamont248 [21]
2 years ago
11

Adi loves the smell of lavender, so she decides to press a few petals of the flower until they release a few drops of oil. She w

ants to determine the molecular weight of the oily substance to try to identify the fragrance she likes so much. Her lab instructor tells her that her experiment will not work. Why do you think it will not work?
Chemistry
1 answer:
soldier1979 [14.2K]2 years ago
4 0

Answer:

See Explanation

Explanation:

What Adi failed to realize is that the oily substance that was obtained from lavender consists of a mixture of substances. It is not only the required  fragrance that is present in the extract.

This experiment will not work because those other components in the mixture may be erroneously identified when they show up in the mass spectrum of the extract and may be mistaken for the fragrance in question.

Hence the experiment will not work because; if some kind of separation method is not used to identify other impurities in the oil, many other substances may be mistaken for the actual fragrance.

You might be interested in
What happens to the rate of dissolution as the temperature is increased in a gas solution?
Nina [5.8K]

Answer:

The rate decreases

Explanation:

When we dissolve a gas in a water, the process is exothermic. This implies that heat is evolved upon dissolution of a gas in water.

Recall from Le Chateliers principle that for exothermic reactions, an increase in temperature favours the reverse reaction. The implication of these is that when the temperature of the gas is increased, less gas will dissolve in water.

Hence increase in temperature decreases the rate of solubility of a gas in water.

8 0
2 years ago
A giant mass of air that carries warm weather to regions of the earth?
Scilla [17]
Continental air masses are characterized by dry air near the surface while maritime air masses are moist .Polar air masses are characterized by cold air near the surface while tropical air masses are warm or hot. Arctic air masses are extremely cold.
:::::::)
6 0
3 years ago
When CO2(g) is put in a sealed container at 730 K and a pressure of 10.0 atm and is heated to 1420 K , the pressure rises to 24.
d1i1m1o1n [39]

Answer:

48%

Explanation:

Based on Gay-Lussac's law, the pressure is directly proportional to the temperature. To solve this question we must assume the temperature increases and all CO2 remains without reaction. The equation is:

P1T2 = P2T1

<em>Where Pis pressure and T absolute temperature of 1, initial state and 2, final state of the gas:</em>

P1 = 10.0atm

T2 = 1420K

P2 = ?

T1 = 730K

P2 = 10.0atm*1420K / 730K

P2 = 19.45 atm

The CO2 reacts as follows:

2CO2 → 2CO+ O2

Where 2 moles of gas react producing 3 moles of gas

Assuming the 100% of CO2 react, the pressure will be:

19.45atm * (3mol / 2mol) = 29.175atm

As the pressure rises just to 24.1atm the moles that react are:

24.1atm * (2mol / 19.45atm) = 2.48 moles of gas are present

The increase in moles is of 0.48 moles, a 100% express an increase of 1mol. The mole percent that descomposes is:

0.48mol / 1mol * 100 = 48%

8 0
2 years ago
Select the most likely product for this reaction:
Rama09 [41]

Answer:

A

Explanation:

just took it on EDG 2020

6 0
2 years ago
Read 2 more answers
write the symbols for the ions that form when potassium and iodine react to form the ionic compound potassium iodide.
Bingel [31]
I believe it isK+  + I-=KI
3 0
2 years ago
Read 2 more answers
Other questions:
  • In the contact process, sulfuric acid is manufactured by first oxidizing SO2 to SO3, which is then reacted with water. The react
    10·1 answer
  • (34.6785 x 5.39) + 435.12
    15·2 answers
  • Calculate the mass of 139 cm^3 Argon at STP
    6·1 answer
  • Will a precipitate form from Pb(NO3)2(aq) and HCl(aq)?
    8·1 answer
  • Which process is used to produce gases from solutions of salts dissolved in water or another liquid?
    6·1 answer
  • What’s the mass of 11.0 mol HNO3
    9·1 answer
  • Three functions of the stem​
    14·2 answers
  • What volume of 18.5 M nitric acid would be needed to make 25.0 mL of 3.0M?
    8·1 answer
  • Hii pls help me to balance the equation thanksss​
    11·2 answers
  • Balance the following the chemical equation: fill in the blanks
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!