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
Nezavi [6.7K]
3 years ago
9

HELP ME NOW PLEASE 80 points

Chemistry
2 answers:
Ainat [17]3 years ago
5 0

Answer:

id.k sorry

Explanation:

Law Incorporation [45]3 years ago
4 0

Answer:

1. Algae

2. Insects

3. Crayfish

4. Trout

5. Herons

Explanation:

You might be interested in
Which arrow represents the change of state described
Mama L [17]

Answer:N

Explanation:

6 0
3 years ago
Enter the ions formed when (NH4)2S dissolves in water.
lisabon 2012 [21]

The ions formed are NH4(+) and S(2-)

The dissolution reaction of (NH4) 2S in water is as follows:


(NH4) 2S ==> 2 NH4 (+) + S (2-).



Ammonium sulfide is the ammonium salt of hydrogen sulfide. It has the formula (NH4) 2S and belongs to the sulfide family.


It is a relatively unstable compound (crystals decomposing at -18 ° C, but exists and is more stable in aqueous solution.) With a pKa exceeding 15, the hydrosulfide ion cannot be significantly deprotonated by ammonia. Thus, such solutions consist mainly of a mixture of ammonia and hydrosulphide of ammonium, it has a smell, close to that of hydrogen sulfide, and its aqueous solutions can be precisely by emitting H2S.

5 0
3 years ago
Read 2 more answers
Iron and oxygen react together to make iron (III) oxide (rust). You know that this is a chemical reaction and not a nuclear reac
Alona [7]
The atoms didn't change we only added 2 different ones together. 2nd one is right
7 0
3 years ago
Read 2 more answers
2 HCl + Na2SO4 > 2 NaCl + H2SO4
Cerrena [4.2K]

Answer:

15

Explanation:

8 0
2 years ago
Is it possible to transfer heat from a cold reservoir to a hot reservoir?
tankabanditka [31]

Answer is: B.) Yes, if work is done, this transfer process can take place.

For example,  air conditioner involves a cyclic process that transfers heat from a cold reservoir to a hot reservoir, but with use of electricity.

Thermal conductuction is the transfer of heat through physical contact. Thermal conduction is the transfer of heat by microscopic collisions of particles. Heat spontaneously flows from a hotter to a colder body.

The process of heat conduction depends on four basic factors: the temperature gradient, the cross section of the materials involved, their path length and the properties of those materials.

8 0
3 years ago
Read 2 more answers
Other questions:
  • if 203 mL of water is added to 5.00 mL of 4.16 M KCl solution, what is the concentration of the dilute solution
    11·1 answer
  • The specific branch of chemistry that focuses on molecules such as salts and water that constitute non-living matter, but are st
    12·2 answers
  • Write the correct term: In gaseous substances, the individual molecules are relatively (close/far apart) and are moving freely,
    6·1 answer
  • A tropical cyclone is a weather event that causes strong winds and heavy rainfall. What is the source of energy for a tropical c
    6·1 answer
  • what is the oxidation number for chromium in each of these compounds. show your work. A. K2CrO4 B.Cr2O3
    15·1 answer
  • What are the four most important elements on earth?
    12·2 answers
  • Given the following reaction: 3CuCl2(aq) 2Na3PO4(aq) --> Cu3(PO4)2(s) 6NaCl(aq) MM (g/mol) 134.45 163.94 380.58 58.44 If 285
    12·1 answer
  • The percent composition by mass of an unknown compound with a molecular mass of 90.078 u is 40.002% C, 6.7135% H, and 53.284% O.
    6·1 answer
  • Pablo wants to enter the science fair. Which question could be answered through scientific investigation?
    7·2 answers
  • Why are weather satellites useful in areas that are affected by hurricanes?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!