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
antiseptic1488 [7]
3 years ago
5

How does ice float on water? Why does solid ice float on liquid water?

Chemistry
1 answer:
kifflom [539]3 years ago
4 0

Answer:

Because there is trapped air inside the cube of ice

Explanation:

when water freezes it has water molecules and air molecules and as it freezes they move slower and slower until it freezes and they become stuck

You might be interested in
The pKa of lactic acid is 3.9. A lactate buffer will be useful from pH values ________. The pKa of lactic acid is 3.9. A lactate
Vedmedyk [2.9K]

Answer:

Explanation:

The usefulness of a buffer is its ability to resist changes in pH when small quantities of base or acid are added to it. This ability is the consequence of having both the conjugate base and the weak acid present in solution which will consume the added base or acid.  

This capacity is lost if the ratio of the concentration of conjugate base to the concentration of weak acid differ by an order of magnitude. Since  buffers having ratios differing by more will have their pH driven by either the weak acid or its conjugate base .

From the Henderson-Hasselbach equation we have that

pH = pKa + log [A⁻]/[HA]

thus

0.1 ≤  [A⁻]/[HA] ≤ 10

Therefore the log of this range is -1 to 1, and the pH will have a useful range of within +/- 1 the pKa of the buffer.

Now we are equipped to answer our question:

pH range = 3.9 +/- 1 = 2.9 through 4.9

7 0
3 years ago
What are some ways a child could make money?<br> (pls help this is part of school)
Damm [24]

Answer:

you could get a job if you are of age if not ask your parents if you could do chores for allowance

5 0
3 years ago
Cyclic compound A has molecular formula C5H10 and undergoes monochlorination to yield exactly three different constitutional iso
RideAnS [48]

Answer:

A: 1,2-dimethylcyclopropane

Explanation:

The possible cyclic structure with formula C₅H₁₀ are shown in the image.

A is a cyclic compound. On monochlorination, A yields 3 products.

To have 3 products on monochlorination, there should be three different carbon atoms.

Considering structure 1, all carbons have same nature, thus only one product will be formed and thus not a structure of A.

Considering structure 2, there are two different carbon atoms, thus two different structure are formed and thus not a structure of A.

Considering structures 3 and 4 , there are four different carbon atoms, thus four products will be formed and either of them are not a structure of A.

Considering structure 5, there are three different carbon atoms,  thus three different structure are formed and thus the A is structure 5.

4 0
3 years ago
Ammonium hydroxide is _____.<br> an acid<br> a base<br> a neutral
Igoryamba
Ammonium hydroxide is basic
5 0
3 years ago
Draw structures from the following names, and determine which compounds are optically active:(b) 3-chloro-3-methylpentane
VladimirAG [237]

The given compound 3-chloro-3-methylpentane is not optically active .

Because this compound  have plane of symmetry (POS) and center  of symmetry (COS) i.e.  have di-symmetry . And also forms  superimposable mirror image . the compound is not optically active .

It does not have chiral center.

Here the carbon atom has only 3 distinct groups i.e. ethyl , chlorine ,  methyl .

<h3>What is di-symmetry?</h3>

Di-symmetry is that which have no center of symmetry and plane of symmetry and alternate axis of symmetry .

<h3>Chiral center :</h3>

Have Sp3 hybridized center (4sigma bond ) .

4 distinct group  is attached to the chiral atom. form non -superimposable mirror image .

<h3>What is optical isomerism ?</h3>

Same molecular formula and same structural formula . also have same physical and chemical properties .

They differ in their behavior towards plane polarized light (ppl) .

Learn more about chiral center here:

brainly.com/question/9522537

#SPJ4

8 0
2 years ago
Other questions:
  • What is 7.09x10 to the 5 minus 6.10xto the 4 in scientific notation
    6·1 answer
  • 17, A compound is a substance composed of two or
    10·2 answers
  • Which compounds are the Bronsted- Lowry bases in the equilibrium?
    13·2 answers
  • Which color has the longest wavelength?
    8·1 answer
  • Patients give doctors information inside the protection of confidentiality agreements. Should the doctor refer the patient to a
    7·1 answer
  • What is the Relative Formula Mass of Potassium bromide?
    5·1 answer
  • Чим відрізняється аніон хлор від атому хлор
    6·1 answer
  • How many moles are in 6.5e23 atoms of Ne?
    8·1 answer
  • HELP PLEASE!!!!! <br> show work
    11·1 answer
  • What part of the autonomic
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!