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3 years ago

How did Moseley establish a more accurate periodic table?

1 answer:

4 0

Moseley established a more accurate periodic table by closer determination of atomic numbers. Through the results of his measurements of the wavelengths of the X-ray spectral lines of a number of elements which showed that the ordering of the elements by atomic number.

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Select the correct answer.

erastova [34]

Scientific law

Explanation:

A scientific law is a term that refers to a fact that naturally occurs in the universe.

Scientific laws are natural laws and they hold true.

Scientific law is a well tested idea that holds through for a range of natural events.
Scientific theories are explanations of phenomenons drawn from series of tests.

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3 0

3 years ago

In the image, balls that look alike represent the same type of atom. Based on this information, what do the images below represe

jekas [21]

Answer:

B. Molecules of Elements

Explanation:

An Element is formed of like one type of atoms, and an element is a pure substance.

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3 years ago

Read 2 more answers

What is balance equation and how we balance equation

Elenna [48]

Answer:

A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge is the same for both the reactants and the products.

Explanation:

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3 years ago

Who would win Meliodas vs Naruto

Scilla [17]

Answer: Naruto,

Explanation:

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3 years ago

Read 2 more answers

Determine if each compound shown is soluble or insoluble. cu(oh)2

vredina [299]

We have to determine if the given compound is soluble or insoluble in water.

The given compound is copper (II) hydroxide, $Cu(OH)_{2}$ . According to the solubility rules the hydroxides of all metal ions are insoluble except that of ammonium and the alkali metal ions. So copper(II) hydroxide will be insoluble in water. In aqueous solution, copper (II) hydroxide would exist as a sparingly soluble compound in which the undissociated compound remains in equilibrium with the ions $Cu^{2+}$ and $OH^{-}$ . The equilibrium would remain mostly towards undissociated form.

$Cu(OH)_{2}(s)Cu^{2+}(aq)+2OH^{-}(aq)$

Therefore, $Cu(OH)_{2}$ is insoluble in water.

4 0

3 years ago