Question

5. Gold is a precious metal that is chemically unreactive. It is used mainly in jewelry, dentistry, and electronic devices. A piece of gold ingot with a mass of 301 g has a volume of 15.6 cm2. Calculate the density of gold. C 0 6. How many atoms are there in one mole of titanium? 7. A tentative explanation used to explain observed facts or laws is called 8. The SI base units of length and mass are , respectively

Answer 1

Answer 5:

Density is defined as the ratio of the mass of the compound divided by the volume it occupies:

density = m / v

having the mass of 310 g and the volume of 15.6 cm3, we divide the 2 values

density = 301 g / 15.6 cm3

density = 19.23 g / cm3

Answer 6:

The number of avogadro, is defined as the number of atoms, molecules, ions that is contained in one mole.

It is defined as 1 mole of molecules, atoms or ions there are 6.02 * 10 ^ 23 molecules of any compound.

That is, in one mole of titanium there are 6.02 * 10 ^ 23 titanium molecules.

Answer 7:

Avogadro's law.

Answer 8:

The basic units of length and mass in the international system are meters (m) and Kilograms (Kg)

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