1. Metformin (C4H11N5) is an oral diabetes medicine that helps control blood sugar levels. Each tablet contains 500.0 mg of metformin. In performing the calculations, work must be shown to earn credit. • Calculate the molar mass of metformin.
129.164 g/mol

• Calculate the number of moles of metformin in a single tablet.

• Jennifer is told to take two tablets with her evening meal. Calculate the number of moles of metformin that Jennifer takes daily.

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it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.