Which element has the quantum numbers (3, 1, -1, ½)?

What’s the percent by mass of carbon in c10h14n2

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together

How many grams of sodium chloride are in 250ml of a 2.5m naci solution