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
Bess [88]
3 years ago
12

50 POINTS WILL GIVE BRAINLYEST!!!!!!!!!

Chemistry
2 answers:
alina1380 [7]3 years ago
6 0

Answer:

true

Explanation:

Heat travels from the hot cocoa in the cup to your hands. No energy is transferred. Heat is transferred from your hands to the hot cocoa in the cup.

Juli2301 [7.4K]3 years ago
6 0

Answer: the answer is true

Explanation: brainlest please

You might be interested in
HELP PLEASE!!!<br><br> HCl is _____.<br><br> a base<br> a neutral<br> an acid
jeka57 [31]

Answer:

an acid

Explanation:

Hydrochloric acid or muriatic acid is a colorless inorganic chemical system with the formula HCl. Hydrochloric acid has a distinctive pungent smell. It is classified as strongly acidic and can attack the skin over a wide composition range, since the hydrogen chloride completely dissociates in an aqueous solution. Wikipedia

6 0
3 years ago
4. By what quantity must the heat capacity be divided to obtain the specific heat of that material? (I poin
charle [14.2K]

Answer:

its mass

its temperature

Explanation:

The heat capacity of a body is the amount of heat needed to raise that temperature of a body by 1k or 1°C.

It is expresses as:

              H = m c Ф

where m is the mass of the body

           c is the specific heat of the body

           Ф is the temperature change of the body

Specific heat capacity is that heat content needed to raise the temperature of a unit mass of a substance by 1k or 1°C

Heat capacity is also known as heat content;

 To solve the problem:

 since H = m c Ф

  we make the unknown c the subject of the expression;

                c = \frac{H}{m (t_{2} - t_{1} )} = H / mФ

So to obtain the specific heat capacity, divided the heat capacity by mass and its temperature change.

8 0
4 years ago
Which of the following is not a organic compound, a -corn oil b -b r o m i n e c -m e t h a n e d- protein
Flura [38]
A corn oil. Because oil is treated with a solvent. After that it is refined which gets rid of free fatty acids. Finally, it is sent through steam distillation to get rid of volatile organic compounds.
6 0
4 years ago
Read 2 more answers
Mass of NaOH = 0.2 <br> Volume of solution 500 ml
Yuliya22 [10]
Density will be mass/volume= 0.2/500 = 0.0004
6 0
3 years ago
According to Hund's rule of maximum spin multiplicity, how many singly-occupied orbitals are there in the valence shells of the
leva [86]

Answer:

A) carbon  - 2

B) cobalt  - 3

C) sulfur   - 2

D) fluorine   - 1

E) titanium   - 2

F) germanium  - 2

Explanation:

Hund's rule of maximum multiplicity:-

Firstly, every orbital which is present in the sublevel is singly occupied and then the orbital is doubly occupied.  

(A) Carbon.

The electronic configuration is -  

1s^22s^22p^2

Thus, 2s orbital is fully filled and p orbital can singly filled 3 electrons. Thus, Carbon has 2 singly occupied orbitals.

(B) Cobalt.

The electronic configuration is -  

1s^22s^22p^63s^23p^63d^{7}4s^2

Thus, 4s orbital is fully filled and d orbital can singly filled 5 electrons. Thus, 4 electrons will be paired in 2 orbitals and 3 orbitals will be singly filled in cobalt.

(C) Sulfur.

The electronic configuration is -  

1s^22s^22p^63s^23p^4

Thus, 3s orbital is fully filled and p orbital can singly filled 3 electrons. Thus, 2 electrons will be paired in 1 orbital and 2 orbitals will be singly filled in sulfur.

D) fluorine

The electronic configuration is -  

1s^22s^22p^5

Thus, 2s orbital is fully filled and p orbital can singly filled 3 electrons. Thus, 4 electrons will be paired in 2 orbitals and 1 orbital will be singly filled in fluorine.

E) Titanium

The electronic configuration is -  

1s^22s^22p^63s^23p^63d^{2}4s^2

Thus, 4s orbital is fully filled and d orbital can singly filled 5 electrons. Thus, 2 orbitals will be singly filled in titanium.

F) Germanium

The electronic configuration is -  

1s^22s^22p^63s^23p^63d^{10}4s^24p^2

Thus, 4s, 3d orbitals are fully filled and p orbital can singly filled 3 electrons. Thus, Germanium has 2 singly occupied orbitals.

4 0
3 years ago
Other questions:
  • What is the main distinction between ionic and covalent bonding?
    6·1 answer
  • What are the chemical properties of acids
    10·1 answer
  • What type of solution is aerated water.why is it so.
    12·1 answer
  • Calculate the number of C atoms in 11g of carbon dioxide
    7·1 answer
  • what is the molarity of 20.0 ml of a KCl solution that reacts completely with 30.0 ml of a 0.400 M Pb(NO3)2 solution?
    7·1 answer
  • Nitrogen has an atomic mass of about 14 amu and an atomic number of 7. how many neutrons does nitrogen have?
    9·2 answers
  • Look at the potential energy diagram for a chemical reaction.
    11·1 answer
  • What is the number of molecules present in 1.12 dm^3 of nitrogen gas at STP​
    12·1 answer
  • 8. A wave has a frequency of 46 Hz and a wavelength of 2.1 meters. What is the speed of the wave?
    13·1 answer
  • Ibuprofen can be found in 800 mg doses in over-the-counter analgesics, such as Advil and Motrin. How many grams of iburofen
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!