Question

The mass of a single tungsten atom is 3.05x10-22 grams. How many tungsten atoms would there be in 135 milligrams of tungsten?

Answer 1

135 mg of tungsten contains 4.43 × 10²⁰ atoms of tungsten (3.05 × 10⁻²² g/atom).

First, we will convert 135 mg to grams using the conversion factor 1 g = 1000 mg.

$135 mg \times \frac{1g}{1000mg} = 0.135 g$

The mass of a single tungsten atom is 3.05 × 10⁻²² g. The number of atoms in 0.135 g of tungsten is:

$0.135 g \times \frac{1atom}{3.05 \times 10^{-22}g } = 4.43 \times 10^{20}atom$

135 mg of tungsten contains 4.43 × 10²⁰ atoms of tungsten (3.05 × 10⁻²² g/atom).

You can learn more about unit conversion here: brainly.com/question/19420601