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
Grace [21]
4 years ago
14

Please help asap, thank you!

Chemistry
1 answer:
yKpoI14uk [10]4 years ago
6 0
The answer is coastal upwelling.
You might be interested in
Do you know the answer to this question?
Yakvenalex [24]
Yes i do know what this question is.
6 0
4 years ago
You are given two beakers A and B and China rose as an indicator .Beaker A has 20ml of magnesium hydroxIde and 100ml of water. a
kicyunya [14]

Answer:

The darkness of the green color produced in the beakers is different because the concentration of magnesium hydroxide is different in both beakers.

Explanation:

The reason why the flasks have different color intensity is related to the concentration of magnesium hydroxide.

An indicator usually changes color because its conformation changes according to the pH. The higher the base level, the pH is higher. Then the color shift will be more intense.

Beaker A has 20 ml of magnesium hydroxide and 100 ml of water and beaker B has 50ml of magnesium hydroxide and 100ml of water.

Beaker A is more diluted than beaker B.

Therefore, beaker B is greener than beaker A.

6 0
3 years ago
I NEED THIS ASAP <br><br> Describe or define transform plate boundary
ohaa [14]
The most famous example of this is the San Andreas Fault Zone of western North America. The San Andreas connects a divergent boundary in the Gulf of California with the Cascadia subduction zone. Another example of a transform boundary on land is the Alpine Fault of New Zealand.
4 0
3 years ago
If a solution has a concentration of 3.2x10-3 [OH-] what is the pOH of the solution?​
nasty-shy [4]

Answer:

The solution with [OH-] = 3.2x10-3 M will have an [H+] of 3.09x10–12 M.Explanation:

6 0
3 years ago
How many half-lives are required for the concentration of reactant to decrease to 1.56% of its original value?4247.56.56
neonofarm [45]

Answer:

6 half-lives are required for the concentration of reactant to decrease to 1.56% of its original value.

Explanation:

Using integrated rate law for first order kinetics as:

[A_t]=[A_0]e^{-kt}

Where,

[A_t] is the concentration at time t

[A_0] is the initial concentration

Given:

Concentration is decreased to 1.56 % which means that 0.0156 of [A_0] is decomposed. So,

\frac {[A_t]}{[A_0]} = 0.0156

Thus,

\frac {[A_t]}{[A_0]}=e^{-k\times t}

0.0156=e^{-k\times t}

kt = 4.1604

The expression for the half life is:-

Half life = 15.0 hours

t_{1/2}=\frac {ln\ 2}{k}

Where, k is rate constant

So,  

k=\frac {ln\ 2}{t_{1/2}}

\frac{4.1604}{t}=\frac {ln\ 2}{t_{1/2}}

t = 6\times t_{1/2}

<u>6 half-lives are required for the concentration of reactant to decrease to 1.56% of its original value.</u>

6 0
4 years ago
Other questions:
  • A scientist has a sample of a substance that could be magnesium, sodium, stainless steel, or copper. Name two properties the sci
    10·1 answer
  • What layer of the atmosphere has the most water
    7·1 answer
  • Explain why diamonds are useful for electrodes in batteries
    15·1 answer
  • How many neutrons does element X have if its atomic number is 32 and its mass number is 75?
    10·1 answer
  • What is the usual oxidation number of oxygen in a compound? Question 5 options: +1 +2 –1 –2
    7·2 answers
  • How many elements and how many atoms are in MgCI2
    9·1 answer
  • What's 1000000000+100000000
    8·2 answers
  • Categorize the following reaction as an acid-base neutralization, precipitation, combination, decomposition, combustion, displac
    7·1 answer
  • What is the probability of a<br> short plant in the cross<br> between a Tt and a tt plant?
    10·1 answer
  • the highest concentration of life extorts in the top 200 meters of ocean water what is the most important factor that influences
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!