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marin [14]
3 years ago
14

What is always included in a comparative investigation?

Chemistry
2 answers:
quester [9]3 years ago
7 0

Answer:it’s is B a scientific question not hypothesis

Explanation:

Taya2010 [7]3 years ago
6 0

Answer:

the answer is scientific question

Explanation:

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What is the pH of a 2.0 x 10^-4 M solution of nitric acid (HNO3)
Semmy [17]

Hello!

datos:

Molarity = 2.0*10^{-4}\:M\:(mol/L)


ps: The ionization constant of the nitric acid is strong (100% ionized in water) or completely dissociates in water, so the pH will be:

pH = - log\:[H_3O^+]

pH = - log\:[2*10^{-4}]

pH = 4 - log\:2

pH = 4 - 0.30

\boxed{\boxed{pH = 3.70}}\end{array}}\qquad\checkmark

Note:. The pH <7, then we have an acidic solution.

I Hope this helps, greetings ... DexteR!

3 0
3 years ago
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If the map shows the average high temperature in July for two cities in Texas. like Del Rio=36°c
Sedbober [7]

Answer:

D

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3 years ago
Solution A has twice as much solute as solution B is it possible for the solutions to have the same concentration
pishuonlain [190]
Yes. As long as the ratio of solute and solvent is same for both solution, the solution has the same concentration. for example, solution A has 2 ml of water, and 1 ml of sucrose. Solution B has 4ml of water and 2ml of sucrose. Both has a ratio of water to sucrose by 2 : 1. they have the same concentration of 50% sucrose. 
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What thype of bond requires the give and take of electrons ?
DedPeter [7]
Ionic bond involves electrostatic attraction between oppositely charged ions.
The ions are atoms that have gained 1 or more electrons and atoms that have lost 1 or more electrons.
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6 0
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explain what happens when anhydrous calcium chloride are exposed to the atmosphere for about two days​
PtichkaEL [24]

Answer:

Explanation:

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