A typical carbon monoxide detector will sound it’s alarm if it detects 0.050 g of CO, HOw many molecules of carbon monoxide are

Question

4 years ago

8

need to sound the alarm

1 answer:

noname [10] · Answer 1 · 2021-12-31T01:32:52+03:00

1.10 x 10²¹molecules

Explanation:

Given parameters:

Mass of CO = 0.05g

Unknown:

Number of molecules = ?

Solution:

To solve this problem, we must understand that the mole of substance is a unit that contains the Avogadro's number of particles.

Now we need to find the number of moles of CO;

Number of moles of CO = $\frac{mass}{molar mass}$

Molar mass of CO = 12 + 16 = 28g/mol

Number of moles = $\frac{0.05}{28}$ = 0.0018moles

Number of molecules of CO = 0.0018 x 6.02 x 10²³ = 1.10 x 10²¹molecules

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