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3 years ago

What is the density of an 84.7 g sample of an unknown substance if the sample occupies 49.6cm cubed

Chemistry

1 answer:

Ahat [919]3 years ago

7 0

Answer:

1.70 g.cm⁻³

Solution:

Data Given;

Mass = 84.7 g

Volume = 49.6 cm³

Density = ?

Formula Used;

Density = Mass ÷ Volume

Putting values,

Density = 84.7 g ÷ 49.6 cm³

Density = 1.70 g.cm⁻³

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Read 2 more answers

What is the reduction half-reaction for the equation below?

Katen [24]

Answer:

$MnO_4^-+8H^++5e^-\rightarrow Mn^{2+}+4H_2O$

Explanation:

Hello there!

In this case, since redox reactions are characterized by the presence of a reduction reaction, whereby the oxidation of the element decreases, and an oxidation reaction whereby the oxidation of the element increases.

In such a way, for the given chemical equation, we can see Fe is increasing its oxidation state from 2+ to 3+, which means it is oxidized. On the flip side, Mn is being reduced from 7+ (MnO₄⁻) to 2+ and this, the reduction half-reaction is:

$MnO_4^-+8H^++5e^-\rightarrow Mn^{2+}+4H_2O$

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Regards!

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