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
Nat2105 [25]
3 years ago
15

what is the percent by volume of ethanol in a solution made by dissolving 39.5 ml of ethanol in 215 ml of water

Chemistry
2 answers:
lorasvet [3.4K]3 years ago
6 0

Answer:

Percent by volume of ethanol = 15.5%

Explanation:

Percent by volume is expressed as % v/v. Mathematically, it is the ratio of the volume of the solute to the volume of the solution (solute+solvent) multiplied by 100.

Formula:

%v/v = \frac{V(solute)}{V(solution)} *100

Here:

V(solute=ethanol) = 39.5 ml

V(solution = ethanol + water) = 39.5 + 215 = 254.5 ml

%v/v = \frac{39.5}{254.5}*100 = 15.5%

Goshia [24]3 years ago
5 0
The two volumes are taken as additive ( in actuality they will not be) , then Final volume = 39.5+215 = 254.5mL % v/v ethanol = 39.5/254.5*100 = 15.5%l
You might be interested in
An atom X has 2 electrons in its outer orbit. What will it do to form a stable ion?
matrenka [14]

Answer:

In a neutral molecule, the sum of the bonding valance electrons must be equal. So the products of the negative element and its charges and the positive element and its charge must be equal.

Explanation:

C1×N1 = C2×N2

If we have a 3 valance electrons , the 'A' charge will be either +3 or -5 for a full octet and valance electron in 'B' atoms will mostly result in acquisition of additional electrons (2) for an octet and relative charge of -2.

Balancing the two,

3 × A = -2 × B

To be equal, A = 2 and B = 3

Therefore, A²B³

6 0
3 years ago
Moving water carrying away small
kondaur [170]

Answer:

erosion:)

Explanation:

7 0
3 years ago
Read 2 more answers
Explain why oil is called a fossil fuel.
Dmitrij [34]

Oil is referred to as a fossil fuel because it is derived from fossils.

Fossil fuels are the result of dinosaur remains being put under pressure for millions of years.

3 0
3 years ago
Read 2 more answers
Which feature of a map shows the relationship between a distance on a map and that distance on Earth? key scale grid system comp
fiasKO [112]

Answer:

Scale is the right answer

Explanation:

The  scale is a sentence that relates distance on the map to distance on Earth

8 0
3 years ago
Read 2 more answers
A chemical that causes a sudden, almost instantaneous release of pressure, gas and heat when subjected to sudden shock, pressure
Arada [10]
The chemical described above belongs to CLASS 1 EXPLOSIVES of DOT hazardous material classification. An hazardous substance is any substance which can cause adverse effects in humans when exposed to it. These substances are divided into different categories based on the way they react in different situations. It is mandatory that you aware of the kind of chemical you are working with when you are in the laboratory in order to take appropriate precautionary steps.
7 0
3 years ago
Other questions:
  • Write a net ionic equation for the reaction of aqueous acetic acid and aqueous potassium hydroxide
    6·1 answer
  • (04.03 HC)
    7·1 answer
  • What do you call all water on earth surface
    7·1 answer
  • Define ΔHrxn and ΔHf . Which Part of the experiment demonstrated the change in enthalpy per mole of a reaction? Which Part of th
    6·1 answer
  • 4) A 4.00 L balloon is filled with 0.297 moles of helium gas with a pressure
    6·1 answer
  • Hello, I would really appreciate it if you guys can answer the question below, it is for marks and I do not know the answer for
    10·1 answer
  • When we combine two simpler substances into a more complex one, it is known as a reaction.
    12·1 answer
  • Please help me do this Qustion
    5·1 answer
  • The diagram below shows a food web in a woodland.
    5·1 answer
  • HELP ME PLS HURRYYYYYYY
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!