Answer to Question #160830 in Chemistry for SUZANNE TILLMAN

Question

how many grams are contained in 1.52 X 10^36 particles of MgO

Answer 1

According to Avogadro's number, 1 mol of any substance contains 6.022 × 1023 particles. From here:

n (MgO) = 1.52 × 10³⁶ × 1 mol / 6.022 ×10²³ = 2.5 × 10¹² mol

According to the equation:

n = m / Mr

where n - number of moles, m - mass, Mr - molecular weight

From here:

m = n × Mr = 2.5 × 10¹² mol × 40 g/mol = 10¹⁴ g

Answer: 10¹⁴ g