YPart A How many grams are in 2.20 mol of sodium chloride (NaCl)? Express your answer...

Question

Question

Answer 1

Answer #1

Part A:

Molar mass of NaCl = 58.44g.mol

moles of NaCl = mass of NaCl in gram / molar mass of NaCl

Hence, mass of NaCl in gram = moles of NaCl x molar mass of NaCl

Now, mass of 2.22 moles of NaCl = 2.22 x 58.44

mass of 2.22 moles of NaCl = 129.73g

Part B:

Number of molecules of H2O in 1 mole of ice = 6.022 x 10²³ [ie. Avogadro`s constant]

So, number of molecules of H2O in 1.50 mole of ice = 1.50 x 6.022 x 10²³

= 9.03 x 10²³ molecules

Answer 2

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