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
Rainbow [258]
3 years ago
13

Which of these forces does not act over a distance?

Chemistry
2 answers:
Paladinen [302]3 years ago
8 0
A. Friction is the answer
aleksandr82 [10.1K]3 years ago
3 0

Answer:

D. Gravitational

Explanation:

correct answer

You might be interested in
Since vinegar is 5% acetic acid and 95% water, find the mole ratio of acetic acid to water in 100 g of vinegar? Hint: Instead of
Oksanka [162]

The mole ratio of acetic acid to water in 100 g of vinegar is 0.015 : 0.985.

<h3>What is the mole ratio of acetic acid to water in 100 g of vinegar?</h3>

The mole ratio of acetic acid to water in 100 g of vinegar is determined from their percentage composition.

The percentage composition of acetic acid and water in vinegar is 5% acetic acid and 95% water.

In 100 g of vinegar, there are 5 g of acetic acid and 5 g of water.

Moles = mass/molar mass

molar mass of acetic acid = 62 g/mol

molar mass of water = 18 g/mol

moles of vinegar = 5/62 = 0.08

moles of water = 95/18 = 5.28

total moles = 5.36

Mole ratio of vinegar to water = 0.08/5.36 : 5.28/5.36

Mole ratio of vinegar to water = 0.015 : 0.985

In conclusion, the mole ratio is determined from the percentage composition of acetic acid and water in vinegar.

Learn more about mole ratio at: brainly.com/question/19099163

#SPJ1

7 0
1 year ago
5. Select the answer for both questions ​
salantis [7]

Answer:

engey

Explanation:

7 0
2 years ago
I NEED HELP ASAP!!!!!!!!!!!!!!!!!!!
Hoochie [10]

Answer:

a) 0

Explanation:

Each of the small dots surrounding the C1 represents one electron. These are where electrivity comes from. Since there is the same number of electrons in both atoms, the difference is 0 (because 6 electrons-6electrons= 0).

4 0
1 year ago
Read 2 more answers
A sample of 87.6 g of carbon is reacted with 136 g of
Vadim26 [7]

Answer:

A. fluorine, 1.79 moles

Explanation:

Given parameters:

Mass of carbon  = 87.7g

Mass of fluorine gas  = 136g

Unknown:

The limiting reactant and the maximum amount of moles of carbon tetrafluoride that can be produced  = ?

Solution:

   Equation of the reaction:

             C    +   2F₂ →   CF₄  

let us find the number of the moles the given species;

  Number of moles = \frac{mass}{molar mass}  

  C;   molar mass = 12;

            Number of moles  = \frac{87.7}{12}   = 7.31moles

 F;  molar mass  = 2(19)  = 38g/mol

             Number of moles  = \frac{136}{38}   = 3.58moles

 So;

   From the give reaction:

          1 mole of C requires 2 moles of F₂

         7.31 moles of C will then require 2 x 7.31 moles of F₂ = 14.62moles

But we have 3.58 moles of the F₂;

  Therefore, the reactant in short supply is F₂ and it is the limiting reactant;

 So;

       2 moles of F₂ will produce  mole of CF₄  

       3.58 moles of F₂ will then produce \frac{3.58}{2}  = 1.79moles of CF₄

6 0
3 years ago
Will give brainliest
sergiy2304 [10]
It shows the atomic number
8 0
3 years ago
Other questions:
  • Devon needs 90mL of a 10% acid solution for a science experiment. He has available a 5% solution and a 20% solution. How many mi
    14·1 answer
  • Among teenagers, what is the most commonly used substance?
    9·1 answer
  • Is a small whole number that appears in front of a formula in a chemical equation?
    15·1 answer
  • KCl is an ionic salt with a formula weight of 74.54 g/mole.
    12·1 answer
  • Which does not contain a lense
    8·2 answers
  • .<br> please help It's due today please
    8·2 answers
  • CAN SOMEONE HELP ME PLEASE!!!!! *blank* carry blood away from the heart, while *blank* carry blood back to the heart.
    12·2 answers
  • Which condition will probably not increase
    5·1 answer
  • The hybridisation of the central atom in ICL-2<br>a) sp.<br>b) sp2<br>c) sp3d d)sp3​
    10·1 answer
  • In a combination reaction, 2.22 g of magnesium is heated with 3.75 g of nitrogen.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!