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3 years ago

Which of the following elements has the highest electronegativity?

Chemistry

2 answers:

blsea [12.9K]3 years ago

7 0

Answer:

B) Florine

Explanation:

Thus, fluorine is the most electronegative element.

Please mark brainliest and have a great day!

Alekssandra [29.7K]3 years ago

7 0

The answer is b) florine

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In all states of matter, atoms of all elements A. bind together the same way. B. are in constant motion. C. are the same size. D

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B: Are in constant motion

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Two 2 1/2 inch plastic strips and two 5 1/3 inch plastic stripa are used to form arectengale what is the perimter of the rectang

Ymorist [56]

Answer:The perimeter of the rectangle is $\frac{47}{3} inch$ or 15.66 inch.

Explanation:

Length of strip (I) = $2\frac{1}{2} inch=\frac{5}{2}inch$

Length of strip (II) = $5\frac{1}{3} inch=\frac{16}{3} inch$

According to question two strips of length $1 inch$ and two strips of lenght $\frac{5}{3} inch$ is used in making rectangle:

Perimeter of rectangle = Sum of all sides of rectangle

Perimeter of rectangle = $\frac{5}{2} inch+\frac{5}{2} inch +\frac{16}{3} inch+\frac{16}{3} inch=\frac{47}{3} inch$

The perimeter of the rectangle is $\frac{47}{3} inch$ or 15.66 inch.

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3 years ago

A _________________ is developed through the scientific method, and it can be modified or improved upon. It may be represented b

katovenus [111]

I think that the best phrase to fit into the blank is a "scientific theory".

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Worth 100 points plus ill mark brainliest

nalin [4]

Answer:

4.92 grams of sodium phosphate (Na₃PO₄) are required to make 125 milliliters of a 0.240 M.

Explanation:

Molarity is a measure of concentration that indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:

$Molarity=\frac{number of moles}{volume}$

Molarity is expressed in units $\frac{moles}{liter}$ .

In this case:

Molarity= 0.240 M
number of moles= ?
volume= 125 mL= 0.125 L

Replacing in the definition of molarity:

$0.240 M=\frac{number of moles}{0.125 L}$

Solving:

number of moles= 0.240 M*0.125 L

number of moles= 0.03 moles

Being the molar mass of sodium phosphate 164 g/mole, that is, the mass of one mole of the compound, you can calculate the mass of 0.03 moles using the following rule of three: if 1 mole of the compound has 164 grams, 0.03 moles contains how much mass?

$mass=\frac{0.03 moles*164 grams}{1 mole}$

mass= 4.92 grams

<u><em>4.92 grams of sodium phosphate (Na₃PO₄) are required to make 125 milliliters of a 0.240 M.</em></u>

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3 years ago

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