HELLO AND GOOD EVENING EVERYONE
mY QUESTION THAT IS QUITE MAKING ME FRUSTERATED IS : HOW MANY MASSES OF Cl2 MOECULE WOULD I EXPECT TO FIND IN A SAMPLE OF CHLORINE GAS?
AND IT IS FOR SURE A GAS
PLEASE HELP ME WITH MY HOMEWORK
THANKYOU
Hello! I'd be happy to help you with your homework question.
To determine the number of Cl2 molecules in a sample of chlorine gas, we need to use Avogadro's number and the concept of molar mass.
1. Start by finding the molar mass of Cl2. Chlorine gas (Cl2) is composed of two chlorine atoms, and each chlorine atom has an atomic mass of approximately 35.5 grams/mole. So, the molar mass of Cl2 is 35.5 grams/mole + 35.5 grams/mole = 71 grams/mole.
2. Now, determine the mass of the chlorine gas sample you are given. Let's say you have X grams of chlorine gas.
3. Use the molar mass of Cl2 calculated in step 1 to relate the mass of the sample to the number of moles of Cl2. We can use the formula:
Moles of Cl2 = Mass of sample (in grams) / Molar mass of Cl2 (in grams/mole)
So, Moles of Cl2 = X grams / 71 grams/mole
4. Lastly, use Avogadro's number to convert moles of Cl2 to the number of Cl2 molecules. Avogadro's number is approximately 6.022 x 10^23 molecules/mole. Multiply the moles of Cl2 from step 3 by Avogadro's number to get the number of Cl2 molecules:
Number of Cl2 molecules = Moles of Cl2 * Avogadro's number
Number of Cl2 molecules = [X grams / 71 grams/mole] * (6.022 x 10^23 molecules/mole)
By following these steps and plugging in the value of X (the mass of the chlorine gas sample you have), you can determine the number of Cl2 molecules in that sample of chlorine gas.
I hope this helps! Let me know if you have any further questions.