How many atoms are in 2.45 moles of Potassium (K)?

How is the way a mixture is combined different from how a compound is combined?

Five different substances are given to you to be dissolved in water. which substances are most likely to undergo dissolution in water? check all that apply. view available hint(s) check all that apply. sodium fluoride, naf octane, c8h18 propanol, ch3ch2ch2oh potassium iodide, ki benzene, c6h6

Anitrogen atom and an oxygen atom combine chemically to form nitric oxide. what is nitric oxide?