Input interpretation
![(2, 4-difluorophenylethynyl)trimethylsilane | molar mass](../image_source/3688eee0666b74c1cc7078e60d1dd546.png)
(2, 4-difluorophenylethynyl)trimethylsilane | molar mass
Result
![Find the molar mass, M, for (2, 4-difluorophenylethynyl)trimethylsilane: 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_6H_3F_2C congruent CSi(CH_3)_3 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 11 F (fluorine) | 2 H (hydrogen) | 12 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 F (fluorine) | 2 | 18.998403163 H (hydrogen) | 12 | 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 F (fluorine) | 2 | 18.998403163 | 2 × 18.998403163 = 37.996806326 H (hydrogen) | 12 | 1.008 | 12 × 1.008 = 12.096 Si (silicon) | 1 | 28.085 | 1 × 28.085 = 28.085 M = 132.121 g/mol + 37.996806326 g/mol + 12.096 g/mol + 28.085 g/mol = 210.299 g/mol](../image_source/33126ab17ba5868c14361a735dd4f0c4.png)
Find the molar mass, M, for (2, 4-difluorophenylethynyl)trimethylsilane: 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_6H_3F_2C congruent CSi(CH_3)_3 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 11 F (fluorine) | 2 H (hydrogen) | 12 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 F (fluorine) | 2 | 18.998403163 H (hydrogen) | 12 | 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 F (fluorine) | 2 | 18.998403163 | 2 × 18.998403163 = 37.996806326 H (hydrogen) | 12 | 1.008 | 12 × 1.008 = 12.096 Si (silicon) | 1 | 28.085 | 1 × 28.085 = 28.085 M = 132.121 g/mol + 37.996806326 g/mol + 12.096 g/mol + 28.085 g/mol = 210.299 g/mol
Unit conversion
![0.2103 kg/mol (kilograms per mole)](../image_source/7217feb3af94dacf3aaffa8755cd0624.png)
0.2103 kg/mol (kilograms per mole)
Comparisons
![≈ 0.29 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/d0de47fd08afa0238853401c96ddb6c8.png)
≈ 0.29 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 1.1 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/d11bccf33f3353b9e6b84a64998dd941.png)
≈ 1.1 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 3.6 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/0448cd802f1c78e6ba0fdffeab282255.png)
≈ 3.6 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 3.5×10^-22 grams | 3.5×10^-25 kg (kilograms) | 210 u (unified atomic mass units) | 210 Da (daltons)](../image_source/b363131c33192e2901db2054f4f54564.png)
Mass of a molecule m from m = M/N_A: | 3.5×10^-22 grams | 3.5×10^-25 kg (kilograms) | 210 u (unified atomic mass units) | 210 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 210](../image_source/5ac560d1dff558699a5b8e26973d47fa.png)
Relative molecular mass M_r from M_r = M_u/M: | 210