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
ra1l [238]
2 years ago
14

At a room temperature, which of the following will evaporate first, a drop of water or a drop of ethanol

Chemistry
2 answers:
Angelina_Jolie [31]2 years ago
5 0

Ethanol will evaporate first because it is more volatile or has a lower boiling point than water.

elena-14-01-66 [18.8K]2 years ago
3 0

Answer:

The water and the alcohol will start to evaporate once you start blowing on your hand. Compared with water, alcohol has a lower heat of evaporation. That means that for the same amount of liquid, more heat transfer occurs during the evaporation of water compared with the alcohol.

You might be interested in
The observed rotation of 2.0 gg of a compound in 50 mLmL of solution in a polarimeter tube 25-cmcm long is +47.2 ∘∘ . What is th
Anastaziya [24]

Answer:

[∝] = +472

Explanation:

Specific rotation in a solution is defined as:

[∝] = ∝ / c×l

Where:

[∝] is specific rotation, ∝ is observed rotation (In degrees), c is concentration in g/mL and l is path length (In dm).

∝: +47.2°

c: 2.0g / 50mL = 0.04g/mL

l: 25cm × (1dm /10cm) = 2.5dm

Replacing:

[∝] = +47.2° / 0.04g/mL×2.5dm = <em>+472</em>

I hope it helps!

4 0
3 years ago
How many ml of concentrated hydrochloric acid would be required to make 1 L of a 0.2 M solution? Assume that concentrated hydroc
fgiga [73]

<u>Answer:</u> The volume of concentrated hydrochloric acid required is 16.53 mL

<u>Explanation:</u>

To calculate the volume of concentrated solution, we use the equation:

M_1V_1=M_2V_2

where,

M_1\text{ and }V_1 are the molarity and volume of the concentrated solution

M_2\text{ and }V_2 are the molarity and volume of diluted solution

We are given:

Conversion factor:  1 L = 1000 mL

M_1=12.1M\\V_1=?mL\\M_2=0.2M\\V_2=1L=1000mL

Putting values in above equation, we get:

12.1\times V_1=0.2\times 1000\\\\V_1=16.53mL

Hence, the volume of concentrated hydrochloric acid required is 16.53 mL

3 0
3 years ago
Darwin called this idea of certain traits being selected in order for an organism to reproduce sexual selection. In crickets and
tamaranim1 [39]

Th correct answer is option C. Calling can be hazardous because it also attracts parasites and predators.

The mating call is used by the males to attract females for sexual reproduction. By using vocal sounds males are not only making themselves attractive to females, they are also making themselves vulnerable to predators.

Thus the mating call can have a disastrous effect on the survival of the species.

7 0
2 years ago
Read 2 more answers
In which condition does barium chloride conduct electricity? And why
Anuta_ua [19.1K]

Answer:

When barium chloride (BaCl 2) is dissolved in water, the water conducts electricity. In what form will the dissolved BaCl 2 be found? a. as Ba 2+ and Cl - ions b. as Ba atoms and Cl 2 molecules

Explanation:

3 0
1 year ago
Photochemical chlorination of 1,2-dibromoethane gives a mixture of two stereoisomers of C2H3Br2Cl. Write their structural formul
Sever21 [200]

Answer:

Enantiomers

Chiral

Yes they will be formed in equal amount.

Explanation:

The Two possible stereo isomers are formed due to generation a chiral center in the molecule.

There will be a carbon with all the four groups different.

The two isomers will be called as enantiomers, which are non super-imposable mirror image of each other.

They are named as "R" or "S'" based on the selection rule.

The IUPAC names are also given in the figure.

The two isomers will be formed in equal amount as during photochemical chloriantion of a compound free radicals are generated (which are trigonal planar) and the other radical may attack from either side (front side or back side) giving the two stereo-isomers.

7 0
2 years ago
Other questions:
  • Which tools are used to measure weather? Choose all answers that are correct. A. barometer B. rain gauge C. anemometer D. speedo
    6·1 answer
  • your skin is the largest organ of your body. The skin and its appendages, hair and nails, are known as the integumentary system.
    12·2 answers
  • When did the Big Bang occur ?
    11·2 answers
  • NH3 + O2 → NO2 + H2O
    13·1 answer
  • An aqueous solution of ammonium sulfate is allowed to react with an aqueous solution of calcium nitrate.
    15·1 answer
  • How would you describe the connection between the amount of energy a type of electromagnetic wave has and how that wave is used
    15·1 answer
  • 24g copper is submerged in water in a graduated cylinder, the total volume increases bu 2.7ml what is the density of copper
    10·1 answer
  • What does malluable mean
    13·1 answer
  • What is the molarity of a 5 L solution that contains 7.5 moles of NaOH?
    12·1 answer
  • Plate Boundaries and Movement report
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!