Problemas
How many molecules are there in 200 grams of CCl_(4)
Roztwór
Bernardo
professionell · Tutor durante 6 años
4.5
(236 Votos)
Respuesta
To find the number of molecules in 200 grams of
, we need to follow these steps:1. Calculate the molar mass of
.2. Convert the given mass of
to moles.3. Use Avogadro's number to find the number of molecules.Step 1: Calculate the molar mass of
.The molar mass of
is the sum of the molar masses of carbon (C) and chlorine (Cl).Molar mass of C = 12.01 g/molMolar mass of Cl = 35.45 g/molMolar mass of
= 12.01 g/mol + (4 × 35.45 g/mol) = 153.81 g/molStep 2: Convert the given mass of
to moles.Given mass of
= 200 gramsMoles of
= Given mass / Molar massMoles of
= 200 g / 153.81 g/mol = 1.30 molesStep 3: Use Avogadro's number to find the number of molecules.Avogadro's number = 6.022 × 10^23 molecules/molNumber of molecules = Moles × Avogadro's numberNumber of molecules = 1.30 moles × 6.022 × 10^23 molecules/mol = 7.83 × 10^23 moleculesTherefore, there are approximately 7.83 × 10^23 molecules in 200 grams of
.