Suppose that, from measurements in a microscope, you determine that a certain layer of graphene covers an area of 1.50μm2. convert this to square meters.

Measuring which physical property is most likely to produce the most precise results when trying to identify a substance

To save time, you can approximate the initial mass of the solid to the nearest ±1 g. for example, if you are asked to add 14.3 g of copper, add between 13 g and 15 g. which of the following sets include two samples with an equal density? which all that apply below 15.4 g gold and 18.7 g silver 15.2 g copper and 50.0 g copper 20.2 g silver and 20.2 g copper 11.2 g gold and 14.9 g gold

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.