What is the mass in grams of 4.50x10^16 atoms of K

The answer to your question is 2.92 x 10⁻⁶ g

Explanation:

Data

mass of K = ?

atoms of K = 4.50 x 10¹⁶

Process

To answer this question just remember that the atomic mass of any element is equivalent to Avogadro's number.

1.- Look for the atomic number of Potassium

Atomic number = 39.10 g

2.- Use proportions and cross multiplication

                 39.10 g of K 6.023 x 10²³ atoms

                      x              4.50 x 10¹⁶ atoms

                            x = (4.50 x 10¹⁶ x 39.10) / 6.023 x 10²³

-Simplify

                            x = 1.7595 x 10¹⁸ / 6.023 x 10²³

-Result

                            x = 2.92 x 10⁻⁶ g

african americans demonstrated their newly found freedom by relocating often in search of relatives whom they had been separated from during slavery. others established schools to educate freed people and they built institutions such as churches and political organizations to advocate for their rights.