How many chlorine atoms are in 5.0 g of C2H3Cl3O2?
What mass of C2H3Cl3O2 would contain 1.0g Cl?
There are 6.02 x 10^23 atoms in a mole of anything. Calculate the molar mass of your compound, that mass will contain 6.02 x 10^23 molecules of that material (whatever it is), then calculate the number of molecules in 5.0 g of the material. The number of Cl atoms will be three times that because there are 3 Cl atoms in a mole of the material. After you do this, part b of your question should be apparent. If not, post your work and repost but tell us what you don't understand.
i got 2.96x10^26
5,5*10^22 atoms
good anwer
To find the number of chlorine atoms in 5.0 g of C2H3Cl3O2, we need to follow these steps:
Step 1: Calculate the molar mass of C2H3Cl3O2
The molar mass is the sum of the atomic masses of all the individual elements in the compound. The atomic masses can be found on the periodic table.
Molar mass of C2H3Cl3O2 = (2 * molar mass of C) + (3 * molar mass of H) + (3 * molar mass of Cl) + (2 * molar mass of O)
Step 2: Convert grams to moles
To calculate the number of moles of C2H3Cl3O2, divide the given mass (5.0 g) by the molar mass from step 1.
Step 3: Calculate the number of molecules of C2H3Cl3O2
The Avogadro's number, 6.02 x 10^23, represents the number of molecules in one mole of a substance. Multiply the number of moles from step 2 by Avogadro's number.
Step 4: Calculate the number of chlorine atoms
Since there are 3 Cl atoms in one molecule of C2H3Cl3O2, multiply the number of molecules from step 3 by 3 to get the total number of chlorine atoms.
For part b of your question, we need to find the mass of C2H3Cl3O2 that contains 1.0g Cl. We can use a similar process, but in this case, we know the mass of Cl and need to find the mass of the entire compound.
Step 1: Calculate the molar mass of Cl
This is the atomic mass of chlorine found on the periodic table.
Step 2: Convert grams of Cl to moles
To find the number of moles of Cl, divide the given mass (1.0 g) by the molar mass of Cl from step 1.
Step 3: Calculate the number of moles C2H3Cl3O2
Since the ratio of Cl to C2H3Cl3O2 in the compound is 3:1, divide the number of moles of Cl from step 2 by 3 to find the number of moles of C2H3Cl3O2.
Step 4: Calculate the mass of C2H3Cl3O2
Multiply the number of moles of C2H3Cl3O2 from step 3 by the molar mass from step 1 to get the mass.