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3 years ago

Explain. How you would separate a mixture of water, sand, salt, and iron feelings into its four component parts

1 answer:

8 0

Mix it. The salt will dissolve, eventually the sand and metal will settle. Pour out most of the water, let it evaporate leaving the salt. Use a magnet for the iron, which leaves the sand.

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How many molecules of H2O are equivalent to 98.2 g of H2O

GREYUIT [131]

Answer:

Demo Mole Quantities

58.5g NaCl(mol/58.5g)(6.02 x 1023/mol) = 6.02 x 1023 Na

Cl21 pre-1982 pennies (after 1982 pennies are mostly zinc with copper coating)

63.5g Cu( mol/ 63.5g)(6.02 x 1023/mol) = 6.02 x 1023 Cu

19.0g Al (mol/27.0g)(6.02 x 1023/mol) = 4.24 x 1023 Al

Explanation:

3 0

3 years ago

Write the Iconic Bond to Metals

Nutka1998 [239]

Answer: The ionic compound formed is magnesium chloride having formula $MgCl_2$

Explanation:

Ionic compound is defined as the compound which is formed by complete transfer of electrons from one atom to another atom.

The atom which looses the electron is known as electropositive atom and the atom which gains the electron is known as electronegative atom. This bond is usually formed between a metal and a non-metal.

Magnesium is the 12th element of the periodic table having electronic configuration of $1s^22s^22p^63s^2$

This element will loose 2 electrons to form $Mg^{2+}$ ion

Chlorine is the 17th element of the periodic table having electronic configuration of $1s^22s^22p^63s^23p^5$

This element will gain 1 electron to form $Cl^{-}$ ion

So, for every 1 atom of magnesium, 2 atoms of chlorine are required. Thus, the chemical formula becomes $MgCl_2$

Hence, the ionic compound formed is magnesium chloride having formula $MgCl_2$

6 0

3 years ago

Which is more stable, half filled or full filled? Why?

lorasvet [3.4K]

subshells have two reasons of stability-
 1) half filled and full filled subshells lead to symmetry as symmetry always increases stability in the nature.
2) in half filled and full filled subshells there are maximum no Of exchanges so exchanges releases energy so it increase stability.. Exchange of e-s also can b understood as delocalization of e-s which is similar like resonance and resonance always increases stability

5 0

3 years ago

Which of the following statements concerning coordinate covalent bonds is correct? Group of answer choices One of the atoms invo

lys-0071 [83]

One of the atoms involved must be a metal and the other a nonmetal

6 0

3 years ago

To change a solid to a liquid, you need to increase / decrease the amount of heat energy

nataly862011 [7]

Increase because of the higher the temp

7 0

3 years ago

Read 2 more answers