2 years ago

How many electrons would make the d shell complete?

Chemistry

1 answer:

Mila [183]2 years ago

3 0

Answer:

Explanation:

The answer for the first question is definitely D. 10, as it is a neutral atom, therefore numbers of p+ and e- are the same.

Hope it helps you

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If Marie and Calvin dissolve 50 grams of KBr in 100 grams of water at 90oC, the solution is

hram777 [196]

Answer:

The solution is 50 %wt

Explanation:

50% wt is a sort of concentration and means, that 50 g of solute (in this case, the potassium bromide) dissolved in 100 g of water.

It is the same to say, that there are 50g of KBr for every 100g of H₂O

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2 years ago

Indicate the pH value as pH < 7, pH = 7 or PH > 7 for each of the following substances.

Galina-37 [17]

Explanation:

a) PH>7

b)PH=7

c)PH>7

d) PH>7

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2 years ago

How does the rock cycle and plate tectonics interfere with geochemists trying to determine the age of the Earth? Chose the best

Phoenix [80]

Answer:

The rock cycle and plate tectonics cause Earth's rocks to break down over time and they are recycled through natural processes.

Explanation:

Rock cycle(Attachment-1)

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2 years ago

Where is the most basic building blocks of all organisms

Naily [24]

Answer:

Cells

Explanation:

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3 years ago

Paul determines that the hydrogen ion concentration of his unknown solution is 3.60×10^-5 M. what is the pH of this solution?

vivado [14]

Answer:

Explanation:

The pH of a substance can be found by using the formula

$p H = - log[ H^{ + } ]$

where [ H+ ] is the hydrogen ion concentration of the solution

From the question

[ H + ] = 3.60 × 10^-5 M

So the pH is

$pH = - log(3.60 \times {10}^{ - 5} ) \\ =4.44369749923$

We have the final answer as

Hope this helps you

4 0

2 years ago