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3 years ago

6

The figure represents a solid block of copper metal in a beaker at 30°C Which of the following best represents the particle arra

ngement as a student tips the beaker, which is kept at
30°C?

1 answer:

maria [59]3 years ago

6 0

Answer:

35

Explanation:

i think it is 30

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What is the pH of a solution with [H+]=6.2x10-9 M?

Serga [27]

Answer: 8.2

Explanation:

pH of a solution is - Log [ H+].

pH = - Log [ 6.2 x 10-9 M]

= 9 - 0.7924

pH = 8.24 approx 8.2

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3 years ago

As pH increases, what happens to the hydrogen ion concentration?

levacccp [35]

Answer:

According to libretexts the answer would be B. decreases.

Explanation:

If the hydrogen concentration increases, the pH decreases, causing the solution to become more acidic. This happens when an acid is introduced. ... If the hydrogen concentration decreases, the pH increases, resulting in a solution that is less acidic and more basic

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What is the volume of 3.00 M sulfuric aid that contain 9.809 g of H2SO4 (98.09g/mol)

Slav-nsk [51]

Given :

Molarity of sulfuric acid solution is 3.0 M.

Amount of sulfuric acid present in solution is 9.809 g.

To Find :

The volume of solution.

Solution :

We know, molarity is given by :

$Molarity = \dfrac{number \ of \ moles \times 1000}{Volume\ ( ml )}\\\\M = \dfrac{w \times 1000}{M.M \times V}\\\\3 = \dfrac{9.809\times 1000}{98.09 \times V}\\\\V = \dfrac{1000}{10\times 3}\ ml\\\\V = 33.33 \ ml$

Therefore, volume required is 33.33 ml .

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If these teams are pulling with the same amount of force what will happen?

Usimov [2.4K]

They will not move...

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2 years ago

Express the following quantity in scientific notation. The answer needs to have the correct number of significant figures. 21,30

melisa1 [442]

2.13 x 10 E 7 i believe this is correct

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