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2 years ago

A mixture contains 95% sulfutic acid how many grams of mixture are needed to get 100g H2so4

Chemistry

1 answer:

I am Lyosha [343]2 years ago

6 0

Answer:

Explanation:

it's worth pointing out that the terms solute and solvent do not really apply here because sulfuric acid is miscible in water, meaning that the two liquids can be mixed in all proportions to form a homogeneous mixture, i.e. a solution.

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anastassius [24]

Answer:

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Explanation:

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2 years ago

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fgiga [73]

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2 years ago

When a strip of magnesium metal is placed in an aqueous solution of copper(II) nitrate, elemental copper coats the surface of th

Lera25 [3.4K]

Answer:

1. 2+ ( $Cu^{2+}$ ).

2. 0 ( $Cu^0$ ).

Explanation:

Hello,

In this case, the described chemical reaction is a redox reaction in fact, since the oxidation states of both magnesium and copper change as shown due to the displacement:

$Mg(s)+Cu(NO_3)_2(aq)\rightarrow Mg(NO_3)_2(aq)+Cu(s)$

Therefore:

1. Since copper is the cation in the copper (II) nitrate, the (II) means that its charge is 2+ ( $Cu^{2+}$ ).

2. Since copper is alone, it means no electrons are being neither shared not given, its charge is 0 ( $Cu^0$ ).

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2 years ago

(b)

mixas84 [53]

Answer:

Group 18th

Explanation:

The group 18th of periodic table which is composed of Noble gases mainly was missing from the Mendeleev's periodic table. The reason for this is that Noble gases are least reactive, therefore, it was difficult to predict such elements which do not react with other elements.

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2 years ago