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
Kazeer [188]
3 years ago
6

An athlete is running a 5-km race at an average speed of 8 km/h. She has to stop to tie her shoe. After tying her shoe, she cont

inues running at 8 km/h. Why would her average speed for the entire race be less than 8 km/h?.
Chemistry
1 answer:
gladu [14]3 years ago
3 0
Because she has to stop to tie her shoe which will slow down her average speed for the entire race.
You might be interested in
Identify the intermolecular forces present in each of these substances ch4
djverab [1.8K]
There are four type of intermolecular forces: ionic, dipole-dipole, hydrogen bonds and London disperssion forces.

CH4 have  no ions, so there are  not ionic forces.

CH4 is a symetrical molecule, so there cannot be a net dipole in the molecule, so there is not dipole-dipole interaction.

Hydrogen bonding is only possbile when H is bonded to N, O or F, beacuse they are the atoms that considerable higher electgronegativy than hydrogen.

So, the only intermolecular force present in CH4 molecules is London disperssion forces, which is a force present in any molecule and is the weakiest one. That explains the low melting and boiling points of CH4. 
7 0
2 years ago
Read 2 more answers
Alkyl halides are formed by the replacement of one or more hydrogen atoms of an aliphatic hydrocarbon with _______.
enot [183]
Given by the name of these compounds, they are formed if one or more hydrogen atoms are substituted for halogens

X = Cl, Br, I, F
3 0
2 years ago
How many moles of LiF would be required to produce a 2.5 M solution with a volume of 1.5L
mihalych1998 [28]

Multiply the values.

n = cv

Where

n =mol

c = concentration

v = volume

n = 2.5×1.5 = 3.75mol

3 0
3 years ago
What properties do all chemical reactions have in common?
kati45 [8]
<span>What all chemical reactions have in common is that energy is released in various forms. Sometimes it's heat or light when there's an explosion, or theres gas and odors or a change in color, or sometimes solids are formed as a deposit. This all show that a reaction occurred and are used as proof.</span>
4 0
3 years ago
Read 2 more answers
What is hydrogen peroxide ?​
Sati [7]

chemical that appears as a colorless liquid, is used in a wide range of cleaning and personal care products, including hair dyes and bleaches, toothpaste and mouthwashes, bathroom cleaners and laundry stain removers. Hydrogen peroxide can also be found in over-the-counter first aid antiseptics, and it is used as a bleaching agent in some food products. It has other consumer and industrial uses as well, including water treatment.

Share:

6 0
2 years ago
Other questions:
  • What do bacteria need to reproduce?
    13·1 answer
  • The water cycle always follows the same pattern
    14·2 answers
  • How many sulfur atoms are present in 25.6 g of Al2(S2O3)3
    13·1 answer
  • At a certain temperature, a mixture of 2 gases, 11.2 g of oxygen and 104.75 of krypton exert a total pressure of 4.25 atm. What
    12·1 answer
  • In a comparison of metals to nonmetals,metals tend to have
    10·1 answer
  • Given these reactions, X ( s ) + 1 2 O 2 ( g ) ⟶ XO ( s ) Δ H = − 668.5 k J / m o l XCO 3 ( s ) ⟶ XO ( s ) + CO 2 ( g ) Δ H = +
    9·1 answer
  • Imagine that you started from 5.00 grams of BaCl2.2H2O, which is your limiting reactant. If only 70% of BaCl2.2H2O gives the des
    8·1 answer
  • 1 Mr. Chavez paid $14.32 total for 8 protein bars.
    14·1 answer
  • Chemical properties describe matter based on its ability to change into___
    8·2 answers
  • Good morning to all Indians​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!