Mnemonic devices are used as a strategy for improving memory. Mnemonic devices make it easier to remember information that is difficult, long, or complex.

What exactly is a mnemonic device? This is a technique that people use in order to remember long lists or a lot of commonly-grouped information in an easy-to-remember way. For example, you may have heard of the word VIBGYOR or the phase ROY G BIV. This is a mnemonic device used to remember the colors of the rainbow. Each letter stands for a color–Violet, Indigo, Blue, Green, Yellow, Orange, Red. You can also make a sentence out of the letters, a name, or anything else that helps shorten the information and makes it more memorable for you. This can be by using acronyms, phrases, rhymes, or any other type of learning aid that works for you.

Explanation:

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Explanation:

n N2(g) = 15.367 mol

Explanation:

airbags generally vary between 35 and 60 liters in volume and for the airbag system to activate, it takes about 20 Kgf/cm² of pressure; with this data taken from literature and knowing the temperature of reaction (495 °C), we determine the moles of nitrogen needed from the ideal gas law.

ideal gas law:

∴ P = 20 Kgf/cm² * ( 0.9678 atm / Kgf/cm² ) = 19.356 atm

∴ V = 50 L average volume

∴ R = 0.082 atm * L / K * mol

∴ T = 495°C + 273 = 768 K

⇒ n = PV / RT

⇒ n = ((19.356 atm) * (50 L)) / ((0.082atm*L/K*mol) * (768K))

⇒ n = 15.367 mol N2(g)