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
e-lub [12.9K]
3 years ago
12

Explain why a coin is able to float on top of water in a glass.

Chemistry
2 answers:
AlexFokin [52]3 years ago
8 0
It is the concept of surface tension that helps the coin to float on the top of the water in the glass. The surface tension acts just opposite to the gravitational force and that is why when any metal placed in the water it will float and come on the surface. Hope this helps!
Alexeev081 [22]3 years ago
3 0

Answer:

Surface tension is the result of water molecules pulling inward with a strong attractive force. This attractive force brings the molecules on the surface of the water close together and causes the surface of the water to be drawn toward the water molecules beneath the surface. Since there are no water molecules above the surface, there are uneven forces. This causes surface tension, allowing the coin to float on the water’s surface.

Explanation:

EDG

You might be interested in
If you begin with 4.0 grams of hydrogen and all of the oxygen that you need, how many grams of water can you make?​
yawa3891 [41]

    the water is 36 grams.

hope this helped

7 0
3 years ago
If a solution conducts electricity and has a pH value of 7 then it could be
stealth61 [152]
The solution that conducts electricity and has a pH value of 7 would most likely be a neutral solution. Water is among the best examples of a neutral solution. When the pH of a solution is considered to be lesser than 7, it is an acid, while if the pH is greater than 7, it is considered to be a basic solution.
7 0
3 years ago
On a flight to Europe, you notice that the packages of peanuts are puffed up. Why? 1. The jet is over-pressurized at high altitu
hodyreva [135]

Answer:

The correct answer is;

5. They were packaged at a higher pressure on the ground, thus causing the gas inside the packages to expand in the sky where the jet is at a lower pressure.

Explanation:

According to Boyle's law, the pressure of a given mass of gas is inversely proportional to it volume at constant temperature

P₁·V₁ = P₂·V₂

At the factories, the peanuts are packaged at atmospheric conditions whereby P₁ = 1 atm, however, the pressure of the air in the atmosphere decreases with altitude as such the pressure in the airplane jet is about a fraction of hat on the ground by about a factor of 0.7.

Therefore P₂ = 0.7 atm and we have

V₂ = P₁·V₁/P₂ = 1 atm×V₁/0.7 atm = 1.43·V₁

The volume increases at high altitudes

7 0
3 years ago
After one half life ___% of the atoms will change to a stable
Nezavi [6.7K]

Answer:

the answer is 30% if the atoms will change to a stable

3 0
3 years ago
Science question down below
aliya0001 [1]
Option 1/A (It is the first one)
6 0
3 years ago
Other questions:
  • Water is a pure substance. Which of the following is true about water?
    12·1 answer
  • Acetic acid (ch3cooh) can be a buffer, similar to carbonic acid. write the dissociation reaction, identifying the acid, base, h+
    12·1 answer
  • An electron in a hydrogen atom moves from level 3 to level 1. In a second hydrogen atom, an electron drops from level 2 to level
    8·2 answers
  • Ice is _______ dense than water.<br><br> more<br><br> less <br><br> equally as<br><br> twice as
    6·2 answers
  • PLEASEE HELPPP ME WITH NUMBER 5!!!!!!!
    9·1 answer
  • Starting with 0.657 g of lead(II) nitrate, a student collects 0.925 g of precipitate. If the calculated mass of precipitate is 0
    6·1 answer
  • Free.... f..... r.... e.... e... FREE POINTS! (and brainliest ofc) Alright two more after this guys
    9·2 answers
  • This is chemistry help
    6·1 answer
  • She remembered that chemical equations can summarize what happens in a chemical reaction. What is the name of the two parts foun
    5·1 answer
  • What makes inertia important in that activity?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!