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Pani-rosa [81]
3 years ago
14

A class investigated the reactivity of four metals by dropping little pieces of the

Chemistry
1 answer:
Pavlova-9 [17]3 years ago
3 0

The least reactive metal is lead, since it reacted with none of the salt solutions.

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Iron has a density of 7.86 g/cm3. Calculate the volume (in dL) of a piece of iron having a mass of 4.07 kg . Note that the densi
elena-s [515]

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The volume of the piece of iron is 5.18dL.

Explanation:

The density (ρ) is equal to the mass (m) divided the volume (V).

\rho = \frac{m}{V}

If we rearrange it, we have:

V=\frac{m}{\rho }

To express the volume in dL we will need the following relations:

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Then,

\rho = \frac{7.86g}{cm^{3} } .\frac{1cm^{3} }{1mL} .\frac{1mL}{10^{-3}L } .\frac{1kg}{10^{3}g } =7.86kg/L

Finally,

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A monosaccharide is formed from a polysaccharide in what kind of reaction?.
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