State the mass of a 10.0-cm3 sample of pyrite

50 g.

Explanation:

To obtain the mass of 10 cm³ sample of pyrite, we must first obtain the density of the sample of pyrite.

Since the sample is composed of same material, then the density of each sample will be the same.

Thus, we can obtain the density by using any of the sample as follow:

Mass = 12.5 g

Volume = 2.5 cm³

Density =?

Density = mass /volume

Density = 12.5 / 2.5

Density = 5 g/cm³

Finally, we shall determine the mass of 10 cm³ sample of pyrite as follow:

Density = 5 g/cm³

Volume = 10 cm³

Mass =?

Density = mass /volume

5 = mass /10

Cross multiply

Mass = 5 × 10

Mass = 50 g

Therefore, the mass of 10 cm³ sample of pyrite is 50 g.

confused

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the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.