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Rus_ich [418]
3 years ago
7

Chemistry EASY question. just tell me the correct letter. brainliest if your right!

Chemistry
1 answer:
Licemer1 [7]3 years ago
8 0
A. Hydrogen and ionizes to form hydrogen ions
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Is a landslide an example of erosion or weathering
Shtirlitz [24]

Answer:

It is a example of erosion

Explanation: because pieces of rock erode making it unstable a causes a landslide

7 0
3 years ago
What are 2 ways microscopes have changed and improved from the 16th century to present day?
Ivan

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Glass and lens making have improved, and electronic features for microscopes have become available

Explanation:

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2 years ago
What gas makes up close to 1/4 of the air surronding the earth?
Olegator [25]
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4 0
3 years ago
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Fill in the blank! (for 15 pts)
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4 0
2 years ago
At a certain temperature, the ph of a neutral solution is 7.43. what is the value of kw at that temperature? express your answer
Delvig [45]

The formula for Kw is:

Kw= [H]*[OH]

where [H] and [OH] are concentrations 

We are given the pH so we can calculate the [H] concentration from the formula:
pH=-log[H] 
7.43 = -log[H]

[H] = 3.715x10^-8 M

In neutral solution, [H] = [OH], therefore: 

<span>[OH]= 3.715x10^-8 M

Calculating Kw:

Kw = (3.715x10^-8)*( 3.715x10^-8)</span>

<span>Kw = 1.38 x 10^-15 </span>

7 0
3 years ago
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