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Paraphin [41]
3 years ago
8

When the water level of a stream or river exceeds its natural banks, it has reached its

Chemistry
2 answers:
Tom [10]3 years ago
8 0
The answer is B. 
The water level has risen over the banks. which means the water is overflowed. 
laiz [17]3 years ago
4 0
B. Flood stage. Hope this helps.
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Question 7
Svet_ta [14]

Answer:

Check if the ions of two compounds exchange places.

Explanation:

The definition of single replacement is a reaction when an ion replaces another ion, thus the name.

7 0
3 years ago
Read 2 more answers
Can anyone please help me!! What is d. Beat the eggs?? A physical or a chemical change?
Stells [14]

Answer:

physical change

Explanation:

im not 100% but thats what i would pick because all you are doing is changing the state they are in. the eggs arnt chemically changing at all. i think ur overthinking it

6 0
3 years ago
What is the effect of high activation energy on a chemical reaction?
alex41 [277]
<h3><u>Answer;</u></h3>

It makes the reaction harder to start

<h3><u>Explanation</u>;</h3>
  • <em><u>Activation energy is minimum amount of energy that is required for a reaction to start. Activation energy determines the rate of a chemical reaction such that the higher the activation energy, the lower the rate of chemical reaction and vice versa.</u></em>
  • The source of activation energy needed to push chemical reactions forward is obtained from the surroundings. Catalyst speed up chemical reaction by lowering the activation energy. Therefore, catalysis is the increase in the rate of a chemical reaction by lowering its activation energy.
4 0
3 years ago
Which are processes that add to the genetic differences in siblings? Cheek all that apply. Interphase Independent assortment Cyt
dangina [55]

Answer:

Crossing over Mitosis

Explanation:

A process called meiosis ensures siblings share just about 50% of their genotype. That's how siblings can have different DNA. Meiosis is a form of cell division that is only used to produce a special category of cells, called gametes.

3 0
3 years ago
Which of the following is not a mixture?
MakcuM [25]

Answer:

Sugar

Explanation:

Mixtures are substances that made of two or more elements or other substances that are joined together by physical methods and when mixed can be also be separated by physical method into the original individual elements.

Air is a mixture of gases such as oxygen, nitrogen, carbon dioxide and rare gases. When an amount of air is collected, its constituents can be collected separately.

Likewise 7 up and sea water

Sugar is a compound made of carbon, hydrogen and oxygen, when sugar is decomposed, it's original constituents are not recovered but sugar is decomposed into carbon dioxide and water

4 0
3 years ago
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