When conducting an experiment what is the difference between an independent variable and a dependent variable ?

What is the empirical formula of vanadium 1 oxide given that 20.38 grams of vandium combines with oxygen to form 23.58 grams of the oxide

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

(1.6 × 10-19)(5.0 × 106) = c × 10d identify the missing numbers below to show the result of multiplying the numbers.