How many grams are there in 1.5 x10^25 molecules of CO2?
My son got 1.1 x 10^6 grams is this correct?
(1.5e25)*(44.01) then divided 6.02*10^23 from both sides
The answer would be 1096.56 g CO2
The correct answer is 1097g
1.5 x 10^25 molecules (1g/6.02x10^23) = 1096g
To calculate the number of grams in a given number of molecules, you need to use the molar mass of the compound in question.
The molar mass of CO2 (carbon dioxide) is calculated by summing the atomic masses of each element present. Carbon (C) has an atomic mass of approximately 12.01 grams/mole, while oxygen (O) has an atomic mass of approximately 16.00 grams/mole.
The molar mass of CO2 can therefore be calculated as:
(1 x 12.01 grams/mole) + (2 x 16.00 grams/mole) = 44.01 grams/mole
Now, let's calculate the number of moles of CO2 in 1.5 x 10^25 molecules:
1.5 x 10^25 molecules / (6.022 x 10^23 molecules/mole) = 2.49 x 10^1 moles
Finally, to convert the number of moles to grams, multiply by the molar mass of CO2:
2.49 x 10^1 moles × 44.01 grams/mole = 1094.25 grams
Therefore, the correct answer is approximately 1094.25 grams. Your son's answer of 1.1 x 10^6 grams is not correct.
Nope. One mole has 6.022x10^23
moles CO2=(1.5e25)/(6.022e23)=24.9 moles