Are there formulas to solve the following problem?
Complete the following table by replacing question marks with the correct numbers: (Note: Each horizontal row is a separate example, so in row #1, 175.32 grams of NaCl is how many moles of NaCl and how many molecules of NaCl does it contain?)
Grams of NaCl Moles of NaCl Number of molecules of NaCl
175.32 ? ?
? 0.333 ?
? ? 6.02 x 1023
To solve this problem, we need to use the concept of molar mass and Avogadro's number. Here's how you can find the missing values:
1. Grams to Moles: To find the moles of NaCl, divide the given grams of NaCl by the molar mass of NaCl. The molar mass of NaCl is 58.44 g/mol. So, in the first row, you would divide 175.32 grams by 58.44 g/mol to get the moles of NaCl.
2. Moles to Number of molecules: To convert moles of NaCl to the number of molecules, we use Avogadro's number, which is 6.02 x 10^23 molecules/mol. Multiply the moles of NaCl by Avogadro's number to get the number of molecules. In the first row, you would multiply the obtained moles of NaCl by 6.02 x 10^23 molecules/mol.
3. Number of molecules to Moles: To convert the number of molecules to moles, divide the given number of molecules by Avogadro's number. In the third row, divide the given number of molecules (which is 6.02 x 10^23) by Avogadro's number.
4. Moles to Grams: To convert moles of NaCl to grams, multiply the given moles by the molar mass of NaCl. Same as in step 1, the molar mass of NaCl is 58.44 g/mol. In the second row, multiply 0.333 moles by 58.44 g/mol to get the grams of NaCl.
Using these steps, you can calculate the missing values in the table.
Yes there are.
mols = grams/molar mass
and 1 mol of anything(NaCl for example) contains 6.02E23 molecules of anythings (molecules NaCl for example)
The two facts will work all of the question marks although some of the equations must be rearranged.