Question

How many molecules of HCl would react with 2 moles of Al?

2Al + 6HCl - 2AlCl3 + 3H2

O A. 2.007 x 1023

O B. 6.02 x 1023

C. 1.806 x 1023

O D. 1.806 x 1024

Answer 1

To determine how many molecules of HCl would react with 2 moles of Al, we can use the balanced chemical equation and Avogadro's number. The number of molecules of HCl that would react with 2 moles of Al is 3.612 x 10^24 molecules of HCl.

Step-by-step explanation:

To determine how many molecules of HCl would react with 2 moles of Al, we need to use the balanced chemical equation: 2Al + 6HCl -> 2AlCl3 + 3H2O. From this equation, we can see that 6 moles of HCl are required to react with 2 moles of Al.

Avogadro's number states that there are 6.02 x 10^23 molecules per mole. Therefore, the number of molecules of HCl that would react with 2 moles of Al is:

6 moles HCl x (6.02 x 10^23 molecules/mol) = 3.612 x 10^24 molecules of HCl.

Answer 2

To determine the number of molecules of HCl that would react with 2 moles of Al, we multiply the moles of HCl by Avogadro's number.

Step-by-step explanation:

To determine the number of molecules of HCl that would react with 2 moles of Al, we need to use the balanced chemical equation:

2Al + 6HCl → 2AlCl3 + 3H2O

From the equation, we can see that 2 moles of Al react with 6 moles of HCl. To convert moles to molecules, we need to multiply by Avogadro's number (6.02 x 1023 molecules/mol). Therefore, the correct answer is option B: 6.02 x 1023 molecules of HCl.