Assuming we start with 100 grams of calcium cyanide (CN) and 45 grams of iron (III) sulfate. How much of the excess reactant is left over?

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves

Type the correct answer in each box.balance the chemical equation.__ n203 ➡️ __ n2 +__ o2