I don’t understand ions and some stuff in chem. I just missed 10 days of school. I don’t understand the following equations either that need to be answered in Roman Numerals. Examples, Explanations and Answers would all be great for help to get me back on track. Thank you!

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Alice did an experiment to find the relationship between the angle at which a ray of light strikes a mirror and the angle at which the mirror reflects the light. she placed a ray box in front of a mirror. she changed the angle at which the light from the ray box struck the mirror and noted the corresponding angle at which the mirror reflected the light. which of the following is the dependent variable in this experiment? the mirror used to reflect the light the ray box used as the source of light angle at which the light from the ray box strikes the mirror angle at which the mirror reflects the light from the ray box