21.If the anion in an ionic compound is a nonmetal, you must change its ending -ate

-ite

-ide

Compare and contrast physical changes with chemical changes.

Classify this reaction: 2al+n2-> aln.

While in europe, if you drive 125 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car’s gas mileage is 32.0 mi/gal? assume that 1 euro=1.26 dollars