how do components in ink contribute to uv/vis analysis and therefore suggest the colour of the ink?
this was from a practical done on tlc plates with 3 inks

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2

Suppose that a certain fortunate person has a net worth of $71.0 billion ($7.10×1010). if her stock has a good year and gains $3.20 billion (3.20×109) in value, what is her new net worth?

Acetylene gas c2h2 undergoes combustion to produce carbon dioxide and water vapor how many grams of water are produced by the same amount of c2h2?