Asample of nitrogen in a glass bulb has a mass of 245 mg. what is this mass in kilograms? give your answer to the correct number of significant figures. kg

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false

Molecular iodine, i2(g), dissociates into iodine atoms at 625 k with a first-order rate constant of 0.271 s−1. part a part complete what is the half-life for this reaction?

(04.05 hc) analyze the given diagram of the carbon cycle below. part 1: which compound does c represent? part 2: name a process that could release this compound into the air. part 3: explain how the elements that form it are conserved during the carbon cycle. use complete sentences to explain your answer. justify how this compound was created from a recycling of carbon in the carbon cycle. use complete sentences to explain your answer.