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
Ne4ueva [31]
2 years ago
10

The world's population:

Chemistry
2 answers:
Whitepunk [10]2 years ago
7 0

Answer:

is unequally distributed

Explanation:

because my finals say so

Phantasy [73]2 years ago
5 0
You can rule out "all of the above" and "decreases slightly each year" because human population is increasing.

Agricultural areas is Farm land which does not have high population. This leaves world population is unequally distributed.. Which is true
You might be interested in
Acetylene gas (c2h2) reacts with oxygen gas (o2) to produce carbon dioxide (co2) and water vapor (h2o). how many liters of c2h2
MissTica
According to the balanced equation of the reaction:

2C2H2 + 5O2 → 4CO2 + 2H2O

So we can mention all as liters,

A) as we see that 2 liters of C2H2 react with 5 liters of oxygen to produce 4 liters of CO4 and 2 liters of H2O 

So, when we have 75L of CO2

and when we have 2 L of C2H2 reacts and gives 4 L of CO2

 2C2H2 → 4CO2 

∴ The volume of C2H2 required is:

                    = 75L / 2

                    = 37.5 L

B) and, when we have 75 L of CO2


and 4CO2 → 2H2O 

∴ the volume of H2O required is: 
                               
                            = 75 L /2
                            = 37.5 L 


C) and from the balanced equation and by  the same way:

when 5 liters O2  reacts to give 4 liters of CO2

and we have 75 L of CO2:

5 O2 → 4 CO2 

   ??  ←  75 L

∴ the volume of O2 required is:

                              = 75 *(5/4)

                              = 93.75 L



D) about the using of the number of moles the answer is: 

no, there is no need to find the number of moles as we called everything in the balanced equation by liters and use it as a liter unit to get the volume, without the need to get the number of moles.
6 0
3 years ago
Read 2 more answers
Picture this in your mind as you read it: You weigh an empty, clean, dry beaker on the balance (scale). It weighs 32.15 grams. Y
AleksAgata [21]

Answer:

2.25 g

Explanation:

The mass of the solid X must be the total mass (beaker + solid X) less than the mass of the beaker. Then:

mass of the solid X = 34.40 - 32.15

mass of the solid X = 2.25 g

The difference of 0.25 g must occur for several problems: an incorrect weight in the balance, the configuration of the balance, the solid can be hydrophilic and absorbs water, and others.

6 0
3 years ago
HELPPPP PLEASEEE
Igoryamba
Atomic mass is the answer!!
Explanation: An elements atomic number won’t be able to change
6 0
2 years ago
Can u explain to me how to do this? This is my first time doing this type of question so explain or give me some of the answers
WITCHER [35]
Bruh bruh bruh bruh bruh bruh
5 0
3 years ago
Read 2 more answers
Determine whether or not each ion contributes to water hardness.
Virty [35]

Answer: The ion that contribute to water hardness are:

--> a. Ca2+

--> b. (HCO)3^- and

--> c. Mg2+

While K+ DOES NOT contribute to water hardness.

Explanation:

WATER in chemistry is known as a universal solvent. This is so because it is polar in nature and dissolves most inorganic solutes and some polar organic solutes to form aqueous solutions. It is composed of elements such as hydrogen and oxygen in the combined ratio of 2:1.

Water is said to be HARD if it does not lather readily with soap. There are two types of water hardness:

--> Permanent hardness: This is mainly due to the presence of CALCIUM and MAGNESIUM ions in the form of soluble tetraoxosulphate(VI) and chlorides. These ions are removed by adding washing soda or caustic soda.

--> Temporary hardness: This is due to the presence of calcium HYDROGENTRIOXOCARBONATES. It can be removed by boiling and using slaked lime.

Therefore from the above given ions, Ca2+,(HCO)3^- and Mg2+ contributes to water hardness.

4 0
2 years ago
Other questions:
  • A bike tire reads a pressure of 13.2 psi. What is the
    14·1 answer
  • What are four main types of fresh water ecosystems
    7·2 answers
  • Redox reaction definition
    5·1 answer
  • How many grams of water will form when 10.54g of h2o react with 95.10g of O2
    8·1 answer
  • Who answers the three economic questions in a market economy? How is this different from command economy?
    10·1 answer
  • Calculate the density (in g/mL) of a liquid that has a mass of 0.115g and a volume of 0.000265 L
    5·1 answer
  • PLEASE HELP ME!!! ASAP
    7·1 answer
  • If a mountain climber performs 180,000) of work climbing a 200 m cliff, how much force did he use?
    7·1 answer
  • Why are gamma rays not able to reflect off a mirrors surface
    5·2 answers
  • Chemical ____ are used to represent compounds ​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!