Mole ConceptHard
Question
When the hydrocarbon propane is burned in air, carbon dioxide and water are formed. If 0.15 mol of CO2 is produced, then how many drops of water will be formed, assuming one drop is 0.05 cm3 and contains
1.70 × 1021 water molecules?
Options
A.1.2 × 1023
B.4
C.53
D.70
Solution
$C_{3}H_{8} + 5O_{2} \rightarrow 3CO_{2} + 4H_{2}O$
0.15 mole 0.20 mol
∴ Number of water droplets =$= \frac{0.2 \times 6 \times 10^{23}}{1.7 \times 10^{21}} = 70.6 = 70$
Create a free account to view solution
View Solution FreeMore Mole Concept Questions
If an iodized salt contains 1% of KI and a person takes 2 g of the salt every day, the iodine ions going into his body e...When $1{dm}^{3}$ of ${CO}_{2}$ gas is passed over hot coke the volume of gaseous mixture after complete reaction at STP ...When x g carbon is burnt with y g oxygen in a closed vessel, no residue is left behind. Which of the following statement...The mass of CO2 that must be mixed with 20 g of oxygen such that 27 ml of a sample of the resulting mixture would contai...Assuming fully decomposed, the volume of CO2 released at STP on heating 9.85g of BaCO3 (Atomic mass of Ba = 137) will be...