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
mart [117]
2 years ago
9

Which statement describes a cycle of Earth's surface?

Chemistry
2 answers:
lord [1]2 years ago
5 0
The answer is .......


<span>A.Nitrogen from the atmosphere is used and replaced directly by plants on the surface.
</span>
hope it helps yall!


have a great one! :)



Elis [28]2 years ago
3 0
Its a im smart lol....................................................
You might be interested in
Which compound contains a triple bond?
Masteriza [31]

Answer: C2H2

Explanation: Because each of the lines represent one bond, and because there are three lines (bonds) between the carbons, it means that they are bonded by three bonds, also known as a triple bond.

5 0
3 years ago
Read 2 more answers
Consider the reversible reaction A ( g ) − ⇀ ↽ − B ( g ) Which K values would indicate that there is more B than A at equilibriu
oksano4ka [1.4K]

Answer:

5000 and 8\times 10^{7} indicate that there is more B than A at equilibrium

Explanation:

For the given reaction: K=\frac{[B]}{[A]}

where [B] and [A] represents equilibrium concentration B and A respectively. K represents equilibrium constant

More B than A at equilibrium means, [B] > [A]

So, K=\frac{[B]}{[A]}>1

As, both 5000 and 8\times 10^{7} are greater than 1 therefore these two K values indicate that there is more B than A at equilibrium

4 0
2 years ago
A balloon filled with helium occupies 21.0ft³ at 55.0°F. Find the temperature of the helium if the volume of the balloon decreas
harkovskaia [24]

Answer:

Assuming pressure is held constant,the question reduces to a ratio and proportion type of question where;

At constant pressure,

21.0ft³-55.0°F

11.0fy³=11.0ft³/21.0ft³×55°F

The temperature is 28.809°F≈29°F

6 0
3 years ago
Which substance is not a fossil fuel?
amid [387]
Biogas is not a fossil fuel
3 0
3 years ago
Students in a chemistry class added 5 g of Zinc to 50 g of hydrochloric acid. A chemical reaction occurred that produced zinc ch
Vinil7 [7]

Answer:

Mass = 11 g

Explanation:

Given data:

Mass of Zn = 5 g

Mass of HCl = 50 g

Mass of hydrogen gas produced = 6 g

Mass of zinc chloride produced = ?

Solution:

Chemical equation:

Zn + 2HCl    →   ZnCl₂ + H₂

Number of moles of Zn:

Number of moles = mass / molar mass

Number of moles = 5 g / 65.38 g/mol

Number of moles = 0.08 mol

Number of moles of HCl :

Number of moles = mass / molar mass

Number of moles = 50 g / 36.5 g/mol

Number of moles = 1.4 mol

Now we will compare the moles of both reactant with zinc chloride.

              Zn           :           ZnCl₂

               1             :             1

              0.08       :        0.08

            HCl          :         ZnCl₂

              2            :           1

             1.4          :         1/2×1.4 =0.7 mol

The number of moles of zinc chloride produced by Zn are less so it will limiting reactant.

Mass of zinc chloride:

Mass = number of moles × molar mass

Mass = 0.08 mol × 136.3 g/mol

Mass = 11 g

5 0
3 years ago
Other questions:
  • List three evidences of physical and chemical change. ( If you know only one or two please write them anyways please)
    15·1 answer
  • What is the SI unit of pressure and from what units is it derived
    5·1 answer
  • An atom has a nucleus that has mass and volume. How does the mass of the nucleus compare to the mass of the atom? How does the v
    14·1 answer
  • White blood cells, part of the ___________ system, work closely with the ___________ system to protect us from infection and dis
    5·1 answer
  • Which statement is true about sodium hydroxide (NaOH)?
    11·2 answers
  • Use Coulomb's Law to explain why and how atomic radius and IE have an inverse relationship.
    10·1 answer
  • What is the mass number of sodium?
    5·2 answers
  • Which of the following would be considered a compound?<br> He<br> CI<br> NaCl<br> B
    10·1 answer
  • Organisms, or living things are made of tiny particles that can join together and make larger structures.
    15·1 answer
  • You have been shipwrecked on a deserted island with no running water/fresh water, you have your clothes and a plastic bag contai
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!