Question

How many moles are in 8.0 gram sample of C3H4

Answer 1

To find the number of moles in an 8.0 gram sample of C3H4, we need to calculate the molar mass of C3H4 and then divide the given mass by the molar mass.

no. of moles in 8.0 gram sample of C3H4

Step-by-step explanation:

To determine the number of moles in an 8.0 gram sample of C3H4, we need to first calculate the molar mass of C3H4. The molar mass of C is 12.011 g/mol, and the molar mass of H is 1.0079 g/mol. By multiplying the molar masses by the number of moles of each element in the compound and adding them together, we can find the molar mass of C3H4. Then, we divide the given mass of 8.0 grams by the molar mass to find the number of moles.

C3H4 has 3 moles of C and 4 moles of H. The molar mass of C3H4 is therefore (3 mol C * 12.011 g/mol) + (4 mol H * 1.0079 g/mol) = 40.0597 g/mol. To find the number of moles in the 8.0 gram sample, we divide 8.0 g by 40.0597 g/mol, giving us approximately 0.1997 moles of C3H4.

Answer 2

0.18 mol C₃H₈

Step-by-step explanation:

to find the mole you have to convert the 8.0grams into moles.

8.0g C₃H₈ 1 mol C₃H₈

1 44.0g C₃H₈

*Pretend that those are a table*

I got 44.0g because Carbon is 12.0g you multiply that 3 times because it has a subscript of 3 and do the same for Hydrogen (1.0 x 8) then add those which would be 44.0g.

1 mol of C₃H₈ = 44.0g C₃H₈

now just mulitply and divide them.

8.0g x 1 = 8.0

1 x 44.0g = 44.0

8.0/44.0 = 0.18 mol C₃H₈