JAMB UTME - Chemistry - 2007 | Green Bridge CBT

Calculate the number of moles of HCl present in 20cm3 of a 0.75M solution of the acid

0.015 mole Richtige Antwort

0.038 mole

3.800 moles

1.500 moles

Antwortdetails

To calculate the number of moles of HCl, we need to use the formula: moles = concentration x volume We are given the volume of the solution as 20 cm^3, and the concentration as 0.75 M. First, we need to convert the volume to liters: 20 cm^3 = 20/1000 L = 0.02 L Then we can plug in the values: moles = 0.75 M x 0.02 L = 0.015 moles Therefore, the number of moles of HCl present in the solution is 0.015 mole. So the correct option is 0.015 mole.

Lies die Unterrichtsnotiz zu Stoichiometry And Chemical Reactions (WAEC)






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