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3 years ago

7

A chemical company makes two brands of antifreeze. the first brand is 70% pure antifreeze, and the second brand is 95% pure anti

freeze. in order to obtain 160 gallons of a mixture that contains 80% pure antifreeze, how many gallons of each brand of antifreeze must be used?

1 answer:

Irina18 [472]3 years ago

6 0

64 gallons of 95%
96 gallons of 70%

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<u>For b:</u> The chemical name and chemical formula formed is strontium oxide and $SrO$

<u>For c:</u> The chemical name and chemical formula formed is aluminium chloride and $AlCl_3$

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For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.

The nomenclature of ionic compounds is given by:

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<u>For a:</u> Sodium and nitrogen:

Sodium is the 11th element of periodic table having electronic configuration of $[Ne]3s^1$

To form $Na^{+}$ ion, this element will loose 1 electron.

Nitrogen is the 7th element of periodic table having electronic configuration of $[He]2s^22p^3$ .

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Strontium is the 38th element of periodic table having electronic configuration of $[Kr]5s^2$ .

To form $Sr^{2+}$ ion, this element will loose 2 electrons.

Oxygen is the 8th element of periodic table having electronic configuration of $[He]2s^22p^4$ .

To form $O^{2-}$ ion, this element will gain 2 electrons.

By criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound.

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