Input interpretation
![1-chloro-5-triethylsilyl-1-pentyne | molar mass](../image_source/c165026a32834b47a8413996bea3efb9.png)
1-chloro-5-triethylsilyl-1-pentyne | molar mass
Result
![Find the molar mass, M, for 1-chloro-5-triethylsilyl-1-pentyne: M = sum _iN_im_i Plan: • Write the chemical formula and gather atomic masses from the periodic table. • Determine values for N_i and m_i using these items. • Finally, compute the mass. Write the chemical formula: C_11H_21ClSi Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 11 Cl (chlorine) | 1 H (hydrogen) | 21 Si (silicon) | 1 Look up the atomic mass, m_i, in g·mol^(-1) for each element in the periodic table: | N_i | m_i/g·mol^(-1) C (carbon) | 11 | 12.011 Cl (chlorine) | 1 | 35.45 H (hydrogen) | 21 | 1.008 Si (silicon) | 1 | 28.085 Multiply N_i by m_i to compute the mass for each element. Then sum those values to compute the molar mass, M: Answer: | | | N_i | m_i/g·mol^(-1) | mass/g·mol^(-1) C (carbon) | 11 | 12.011 | 11 × 12.011 = 132.121 Cl (chlorine) | 1 | 35.45 | 1 × 35.45 = 35.45 H (hydrogen) | 21 | 1.008 | 21 × 1.008 = 21.168 Si (silicon) | 1 | 28.085 | 1 × 28.085 = 28.085 M = 132.121 g/mol + 35.45 g/mol + 21.168 g/mol + 28.085 g/mol = 216.82 g/mol](../image_source/303d3f1640dc703a33f6b87b93788a90.png)
Find the molar mass, M, for 1-chloro-5-triethylsilyl-1-pentyne: M = sum _iN_im_i Plan: • Write the chemical formula and gather atomic masses from the periodic table. • Determine values for N_i and m_i using these items. • Finally, compute the mass. Write the chemical formula: C_11H_21ClSi Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 11 Cl (chlorine) | 1 H (hydrogen) | 21 Si (silicon) | 1 Look up the atomic mass, m_i, in g·mol^(-1) for each element in the periodic table: | N_i | m_i/g·mol^(-1) C (carbon) | 11 | 12.011 Cl (chlorine) | 1 | 35.45 H (hydrogen) | 21 | 1.008 Si (silicon) | 1 | 28.085 Multiply N_i by m_i to compute the mass for each element. Then sum those values to compute the molar mass, M: Answer: | | | N_i | m_i/g·mol^(-1) | mass/g·mol^(-1) C (carbon) | 11 | 12.011 | 11 × 12.011 = 132.121 Cl (chlorine) | 1 | 35.45 | 1 × 35.45 = 35.45 H (hydrogen) | 21 | 1.008 | 21 × 1.008 = 21.168 Si (silicon) | 1 | 28.085 | 1 × 28.085 = 28.085 M = 132.121 g/mol + 35.45 g/mol + 21.168 g/mol + 28.085 g/mol = 216.82 g/mol
Unit conversion
![0.2168 kg/mol (kilograms per mole)](../image_source/2371747eef1a3de885b495cc5461564a.png)
0.2168 kg/mol (kilograms per mole)
Comparisons
![≈ 0.3 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/33e889c31c13cab3169db7bae0aec5b5.png)
≈ 0.3 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 1.1 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/b3ec52f982f3de40aa9c542992e7ae69.png)
≈ 1.1 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 3.7 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/adf336d0b9f39bdc788ba32ad64cac75.png)
≈ 3.7 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 3.6×10^-22 grams | 3.6×10^-25 kg (kilograms) | 217 u (unified atomic mass units) | 217 Da (daltons)](../image_source/53ea54cca7890511ec015bcc127671d2.png)
Mass of a molecule m from m = M/N_A: | 3.6×10^-22 grams | 3.6×10^-25 kg (kilograms) | 217 u (unified atomic mass units) | 217 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 217](../image_source/16c4082df19cb08a65a1e236be9d39c4.png)
Relative molecular mass M_r from M_r = M_u/M: | 217