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
11Alexandr11 [23.1K]
3 years ago
8

Ice usually forms on the top part of lakes not the bottom , the reason for this occurence is?​

Chemistry
1 answer:
Bingel [31]3 years ago
5 0

Answer:

Ice is less dense than water because of the way it forms a hexagonal crystalline structure. Each water molecule consists of two hydrogen atoms bonded to the bottom of an oxygen atom. ... In the winter, temperatures in a lake get close enough to freezing that the colder water is less dense and floats to the top

Explanation:

You might be interested in
What is the reducing agent in the reaction below?
frez [133]
Option (a) is correct.
A reducing agent is the one which loses electrons to other substance and an oxidizing agent is one which accepts electrons. 
Here, In CrO_{3}, Cr has oxidation number 6+  in the L.H.S of the equation, but on R.H.S its oxidation number is 0 i.e. it Cr has gained electrons such that total charge is 0.
And the oxidation state of Al in the left-hand side of equation is 0 and in right-hand side, it is +6.i.e. it has donated its electrons to Cr. 

Hence, Cr is the oxidizing agent and Al is the reducing agent. 
4 0
3 years ago
Read 2 more answers
Identify whether each reaction represents a chemical reaction or a nuclear reaction by filling in the blank with the word ‘chemi
svetoff [14.1K]
Answer 1) Cl_{2} + H_{2} ----> 2 HCl 
This is a pure chemical reaction that is taking place.

In this reaction the two chemical species which are Chlorine and Hydrogen undergo addition reaction and form two moles of hydrochloric acid. No new species is formed except the combination of reactants which gives the product.

Answer 2) H + H ----> He + n
This is a nuclear reaction.

As the reactant species is undergoing a reaction which is resulting in formation of new species completely different than the elements in reactants. 

Also there is a neutron which is generated after the reaction this is clear indication of nuclear fusion reaction. Hence, it can be called as nuclear reaction.

6 0
3 years ago
Read 2 more answers
Which statement describes the Arrhenius interpretation of acids and bases
KIM [24]
<span>it is limited to situations that involve aqueous solutions of specific compounds

I hope this helps</span>
8 0
3 years ago
Read 2 more answers
What is the molar mass of H3PO4?
SCORPION-xisa [38]

Answer:

Molar mass of H3PO4  = 97.99 g/mol (Approx.)

Explanation:

Find:

Molar mass of H3PO4

Given;

Molar mass of H = 1.0079 g/mol

Molar mass of P = 30.974 g/mol

Molar mass of O = 15.999 g/mol

Computation:

Molar mass of H3PO4  = (1.0079)(3) + 30.974 + 15.999(4)

Molar mass of H3PO4  = 3.0237 + 30.974 + 63.996

Molar mass of H3PO4  = 97.9937

Molar mass of H3PO4  = 97.99 g/mol (Approx.)

4 0
3 years ago
Read 2 more answers
What part of the Earth is made up of the tectonic plates? List and describe the motion of the three types of plate boundaries
Tasya [4]
The Earth consists of four concentric layers: inner core, outer core, mantle and crust. The crust is made up of tectonic plates, which are in constant motion. Divergent, convergent, and transform.
8 0
3 years ago
Other questions:
  • Although both fission and fusion generate energy, fusion produces much more energy than nuclear fission and produces less nuclea
    7·2 answers
  • Choose the appropriate volumetric device to use for each of the volume measuring applications.
    13·1 answer
  • ammonia (NH3(g) Hf=-45.9 kJ/mol) reacts. with oxygen to produce nitrogen and water (H2O(g) Hf = -241.8 kJ/mol according to the e
    5·2 answers
  • Calculate to three significant digits the density of dinitrogen monoxide gas at exactly and exactly . You can assume dinitrogen
    7·1 answer
  • QUESTION 10
    14·1 answer
  • What is the coefficient in a chemical equation
    10·2 answers
  • 20 POINTS PLZ ANSWER FAST !!!!!!!!!!!!!!!!!!
    7·1 answer
  • Which chemical symbols will complete the equation for this single displacement reaction?
    12·2 answers
  • Which of the following atoms has the highest ionization energy?<br> Na, Cs, K, Li
    13·1 answer
  • Place the parts of the human circulatory system in order from highest to lowest degree of internal organization.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!