How many grams are in a sample of koh with 5.34 x 10^24 molecules?

Mass of KOH = 497.78 g

Explanation:

Given data  

mass of KOH = ?

number of KOH molecules = 5.34 × 10²⁴

molar mass of KOH = 56.12 g/mol

Solution  

1st we find out the number of moles of KOH

number of moles = number of molecules given / Avogadro number

number of moles of KOH = 5.34 × 10²⁴ / 6.022 × 10²³

number of moles of KOH = 8.87 mol

Now we find out the mass of KOH

Mass of KOH = moles × molar mass

Mass of KOH = 8.87 mol  × 56.12 g/mol

Mass of KOH = 497.78 g

just did the assignment and the answer was #1 +2 n

1. a)c-14 has two more protons

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3. c) iron and nickel.