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
MatroZZZ [7]
3 years ago
12

During the past several lessons you have learned about various processes that change Earth’s surface on different scales. Some e

vents happen quickly, within a fraction of a second, and others take millions to billions of years. Some events are global in scale while others occur on the microscopic level.
Summarize how Earth’s surface has and does change over varying time and spatial (space) scales. Use evidence with examples to support your response.

If you'd like to challenge yourself, use the ABC strategy to summarize how Earth’s surface has and does change over varying time and spatial scales. Each sentence should begin with a word that starts with the letter indicated.

C -

H -

A -

N -

G -

E -
Chemistry
2 answers:
romanna [79]3 years ago
6 0

Answer:

uhh hey

Explanation:

olasank [31]3 years ago
3 0
The earth contains a lot of different CLIMATES, in some climates it’s very HOT, the AIR blows through different and that’s what gives states different seasons at different times. the NEWS tracks the climate to let everyone know across the world how it’s gonna be outside. some climates are very dangerous, they can be mixed in with things like GASES that could kill the population, this is why we need to put a end to to the pollution and make the world a better ENVIRONMENT.
You might be interested in
For the reaction: CH3NH2(aq) + H2O(aq) ⇌ CH3NH3 +(aq) + OH- Determine the change in the pH (ΔpH) for the addition of 6.7 M CH3NH
Korolek [52]

Answer:

The change in the pH (ΔpH) is 2,17

Explanation:

The reaction:

CH₃NH₂(aq) + H₂O(aq) ⇌ CH₃NH₃⁺(aq) + OH⁻

kb = \frac{[OH^{-}][CH_{3}NH_{3}^+]}{[CH_{3}NH_{2}]} <em>(1)</em>

In equilibrium, a solution of CH₃NH₂ 4,7M produces:

[CH₃NH₂] = 4,7 - x

[CH₃NH₃⁺] = x

[OH⁻] = x

Replacing in (1):

4,38x10^{-4} = \frac{x^2}{4,7-x}

x² + 4,38x10⁻⁴x - 2,0586x10⁻³ = 0

The solutions are:

x = -0,0456 No physical sense. There are not negative concentrations.

x = 0,04515 Real answer.

The concentration of [OH⁻] is 0,04515 M.

As pOH = -log [OH⁻] And pH+pOH = 14. The pH of this solution is:

<em>pH = 12,65</em>

The addition of 6,7M produce this changes in concentrations:

[CH₃NH₂] = 4,656 + x

[CH₃NH₃⁺] = 6,74515 - x

[OH⁻] = 0,04515 - x

Replacing in (1) you will obtain:

x² - 6,7907x + 0,3025 = 0

Solving for x:

x = 6,74586 No physical sense

x = 0,04484 Real answer.

Thus, [OH⁻] = 0,04515 - 0,044842 = 3,08x10⁻⁴M

pOH = 3,51.

<em>pH = 10,49</em>

Thus ΔpH is 12,65 - 10,49 = <em>2,16 ≈ 2,17</em>

I hope it helps!

4 0
4 years ago
Should the density of a metal depend on its volume?
jekas [21]

Answer:

Density is the ratio of the mass of an object to its volume. Density is an intensive property, meaning that it does not depend on the amount of material present in the sample. ... Since a cubic centimeter is equal to a milliliter, density units can also be expressed as g/mL.

Explanation:

6 0
3 years ago
Which of the following is a true statement?
Ede4ka [16]
Energy can accomplish work
3 0
3 years ago
Read 2 more answers
Photosynthesis is the chemical process in which plants and other organisms
-Dominant- [34]

Answer:

sugar and oxygen

Explanation:

sugar (glucose) and oxygen

7 0
2 years ago
What is the percent composition by mass of sulfur in the compound mgso4
Margaret [11]

Answer:

26.7% is the percent composition by mass of sulfur in a compound named magnesium sulfate.

Explanation:

Molar mass of compound = 120 g/mol

Number of sulfur atom = 1

Atomic mass of sulfur = 32 g/mol

Percentage of element in compound :

=\frac{\text{Number of atoms}\times \text{Atomic mass}}{\text{molar mas of compound}}\times 100

Sulfur :

=\frac{1\times 32 g/mol}{120 g/mol}\times 100=26.7\%

26.7% is the percent composition by mass of sulfur in a compound named magnesium sulfate.

6 0
3 years ago
Other questions:
  • Alpha decay _____ of an element.
    13·1 answer
  • when salt is added to water how does it affect the water's freezing points? Explain the science behind how this works at the par
    5·1 answer
  • You and a friend each decide to build the same model airplane. After the airplanes are built, you decide to conduct an investiga
    14·1 answer
  • What statement describes a good scientific question? Check all that apply.<br>Please help mee!​
    8·1 answer
  • Which is an example of a homogeneous mixture?
    10·1 answer
  • HELP I REALLY NEED HELP​
    7·1 answer
  • What is the difference between a polar and a nonpolar bond?And how can i figure out if its polar or nonpolar in a bond question?
    9·2 answers
  • Explain what happens when water reacts with sodium metal. Support your answer with the relevant
    10·1 answer
  • How many hours are in 188 years
    5·1 answer
  • Hurry I need the answer asap
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!