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faust18 [17]
3 years ago
9

What is the H+ ion concentration of a solution with a pH of 7?

Chemistry
2 answers:
wariber [46]3 years ago
7 0

Answer:

10-7mol/l

Explanation:

nata0808 [166]3 years ago
6 0

Answer: 10-7mol/l

Explanation:

BRAINS

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Determine the number of grams of sodium carbonate needed to prepare 100.0 ml of a 2.5 m solution
SCORPION-xisa [38]

Answer:

26.5 g

Explanation:

First we convert 100.0 mL to L:

  • 100.0 mL / 1000 = 0.100 L

Now we <u>calculate how many moles of sodium carbonate are needed</u>, using the <em>definition of molarity</em>:

  • Molarity = moles / liters
  • moles = molarity * liters
  • 2.5 M * 0.100 L = 0.25 mol

Finally we <u>convert 0.25 moles of sodium carbonate into grams</u>, using its <em>molar mass</em>:

  • 0.25 mol * 106 g/mol = 26.5 g
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2 years ago
As a result, there is no overall electric force on an atom. true or false
Mamont248 [21]

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Explanation:

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What is the the electron configuration for the element ge. use the noble gas preceding for the inner electron?
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[Ar] 3d^10 4s^2 4p^2
3 0
3 years ago
Which environmental changes occur Fastest
aleksklad [387]
Assuming you have multiple choices... According to the internet, this question is a multiple choice question.

Here are following answers.

"The environmental change that occurs faster is definitely volcanic eruption. It may happen in an instant and destroy everything in its way, whereas the process of regrowth of forest after volcanic eruption is a slow one."

Oil spills may also have the fastest occurring changes in the environment.

Quoted answers are NOT Mine! All credits reserved to the owners:

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7 0
3 years ago
Read 2 more answers
Help please with the 2 questions i will mark you brainliest
stich3 [128]

Answer:

The first one would be "Both Mixtures and Compounds", while the second one would be "Solution 2 - Because she used more salt".

Explanation:

An element is made up of atoms, but to make a mixture or compound you are combining multiple elements. And when look at the second question, assuming they have the same amount of water, there is a higher ratio of salt in the second one, which would make it more concentrated.

4 0
2 years ago
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