determine d no of moles in d following samples 2.5*10
To determine the number of moles in a sample, you need to know both the mass of the sample and the molar mass of the substance. However, in the given question, there is no mass mentioned for the sample.
It appears that the information provided is incomplete. To find the number of moles, you need to know the mass of the sample in grams. Once you have the mass, you can use the following formula to calculate the number of moles:
Number of moles = Mass of the sample / Molar mass
Please provide the mass of the sample, and I will be happy to help you calculate the number of moles.