Question

What mass of Calcium is found in 6.77 x 10^26 atoms?

a) 40.08 g
b) 4.01 g
c) 0.04 g
d) 0.40 g

Answer 1

The mass of Calcium found in 6.77 x 10^26 atoms is approximately 451.2 g.

Step-by-step explanation:

To calculate the mass of Calcium found in 6.77 x 10^26 atoms, you need to use the molar mass of Calcium. The molar mass of Calcium (Ca) is 40.08 g/mol. Since 1 mole of Calcium contains 6.022 x 10^23 atoms, you can calculate the mass of Calcium in 6.77 x 10^26 atoms using the formula:

Mass = (number of atoms/ Avogadro's number) x molar mass

Mass = (6.77 x 10^26 / 6.022 x 10^23) x 40.08 = 451.2 g

Therefore, the mass of Calcium found in 6.77 x 10^26 atoms is approximately 451.2 g.