Question

C6H6=65мл Po-0,88 г/мл Найти m-C6h6Cl6????

Answer 1

HV
C H +CI =》C H CI
6 6 2 (I) 6 6 6

Answer 2

To find the mass of m-C6H6Cl6 (meta-dichlorobenzene), we first need to determine the number of moles of C6H6 (benzene) and Po (polonium) based on the given information. Then, we can calculate the mass of m-C6H6Cl6.

1. Calculate the number of moles of C6H6 (benzene): Given volume of C6H6 (benzene) = 65 mL

We know that the density of C6H6 is 0.88 g/mL. So, the mass of C6H6 is: Mass of C6H6 = Volume of C6H6 × Density of C6H6 Mass of C6H6 = 65 mL × 0.88 g/mL Mass of C6H6 = 57.2 g

Next, we need to convert the mass of C6H6 into moles using its molar mass: Molar mass of C6H6 = 6 × Atomic mass of C + 6 × Atomic mass of H Molar mass of C6H6 = 6 × 12.01 g/mol + 6 × 1.01 g/mol Molar mass of C6H6 = 78.11 g/mol

Number of moles of C6H6 = Mass of C6H6 / Molar mass of C6H6 Number of moles of C6H6 = 57.2 g / 78.11 g/mol Number of moles of C6H6 ≈ 0.732 mol

2. Calculate the number of moles of Po (polonium): The given information doesn't include the molar mass of Po, and polonium is not typically used in this context. It's important to note that polonium is a highly radioactive element and is not commonly encountered or used in chemical calculations. Without the molar mass of Po, we cannot calculate its moles.

3. Calculate the molar mass of m-C6H6Cl6: m-C6H6Cl6 consists of one C6H6 unit and six chlorine atoms. The molar mass of m-C6H6Cl6 can be calculated as follows:

Molar mass of C6H6Cl6 = Molar mass of C6H6 + 6 × Molar mass of Cl Molar mass of C6H6Cl6 ≈ 78.11 g/mol + 6 × 35.45 g/mol Molar mass of C6H6Cl6 ≈ 78.11 g/mol + 212.7 g/mol Molar mass of C6H6Cl6 ≈ 290.81 g/mol

4. Calculate the mass of m-C6H6Cl6: Mass of m-C6H6Cl6 = Number of moles of C6H6 × Molar mass of m-C6H6Cl6 Mass of m-C6H6Cl6 = 0.732 mol × 290.81 g/mol Mass of m-C6H6Cl6 ≈ 212.69 g

Therefore, the mass of m-C6H6Cl6 is approximately 212.69 grams.