A compund containing elements A and B has the formula A3B. If a jar containing 100 molecules of the compound A3B, how many atoms of type A are in the jar?
What is 3atoms/molecule* 100 molecules equal to?
Catie, the answer is 300, i had a hard time with this one also. lol the extra credit packet is kinda tricky...watch out!
To find out how many atoms of element A are in the jar, we need to first determine the number of moles of the compound A3B.
Given that the compound has the formula A3B, it means that for every 1 molecule of A3B, there are 3 atoms of element A.
Now, let's calculate the number of moles of A3B in the jar:
1 mole of any substance contains Avogadro's number of molecules, which is approximately 6.022 × 10^23.
Since we have 100 molecules of A3B, the number of moles would be:
Number of moles = Number of molecules / Avogadro's number
Number of moles = 100 / (6.022 × 10^23)
Now, let's find the number of atoms of element A:
Since there are 3 atoms of element A in 1 molecule of A3B, for every mole of A3B, there would be 3 moles of element A.
Number of atoms of A = Number of moles of A3B × 3
Now, substitute the value of the number of moles of A3B:
Number of atoms of A = (100 / (6.022 × 10^23)) × 3
Using this equation, you can calculate the number of atoms of type A in the jar.