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3 years ago

The density of a metal is 11.0 g/cm3 Find the mass of 6.0 cm3

Chemistry

1 answer:

ra1l [238]3 years ago

6 0

Answer:

The mass of the metal is 66 g

Explanation:

We use the formula:

Density =mass/ volume

11, 0 g/cm3= mass/ 6, 0 cm3

mass= 11, 0 g/cm3 x 6, 0 cm3= 66 g

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Strike441 [17]

Answer:

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Explanation:

When we are asked to convert from grams of a substance into moles, we have to use the substance's molar mass.

Meaning that for this problem, we'll <em>use the molar mass of hydrogen peroxide</em> (H₂O₂), as follows:

272 g ÷ 34 g/mol = 8 mol

There are 8 moles in 272 grams of hydrogen peroxide.

7 0

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3 years ago

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3 0

4 years ago

Given the chemical reaction: Hg2+(aq) + Cu(s) + Hg(s) + Cu2+(aq)

Pavel [41]

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Explanation:

Equilibrium state is the state when reactants and products are present but the concentrations does not change with time.

The equilibrium is dynamic in nature and the reactions are continuous in nature. Rate of forward reaction is equal to the rate of backward reaction.

The standard emf of a cell is related to Gibbs free energy by following relation:

$\Delta G=-nFE^0$

The Gibbs free energy is related to equilibrium constant by following relation:

$\Delta G=-2.303RTlog K$

For equilibrium $\Delta G=0$

Thus $0=-nFE^0$

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3 years ago