Input interpretation
![(1-phenylethyl)xylene | molar mass](../image_source/4c98c38ac28feeecaf43ba32f3b9d4a4.png)
(1-phenylethyl)xylene | molar mass
Result
![Find the molar mass, M, for (1-phenylethyl)xylene: 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_16H_18 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 16 H (hydrogen) | 18 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) | 16 | 12.011 H (hydrogen) | 18 | 1.008 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) | 16 | 12.011 | 16 × 12.011 = 192.176 H (hydrogen) | 18 | 1.008 | 18 × 1.008 = 18.144 M = 192.176 g/mol + 18.144 g/mol = 210.320 g/mol](../image_source/9f3b25093456018d8e6f1cdbc4804dc0.png)
Find the molar mass, M, for (1-phenylethyl)xylene: 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_16H_18 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 16 H (hydrogen) | 18 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) | 16 | 12.011 H (hydrogen) | 18 | 1.008 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) | 16 | 12.011 | 16 × 12.011 = 192.176 H (hydrogen) | 18 | 1.008 | 18 × 1.008 = 18.144 M = 192.176 g/mol + 18.144 g/mol = 210.320 g/mol
Unit conversion
![0.21032 kg/mol (kilograms per mole)](../image_source/c5a3869bb96a4e5fc77f63374e2a54e4.png)
0.21032 kg/mol (kilograms per mole)
Comparisons
![≈ 0.29 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/34745a13c7941099e96756827b8e3934.png)
≈ 0.29 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 1.1 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/4bd702cfac9130bf526a6189f88b5995.png)
≈ 1.1 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 3.6 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/89748bd723e886b78728f3159ba254e5.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/76f699a0ce154621e1203f207275d1e1.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/9c3123147eb9bcaa4f057a3123de79c3.png)
Relative molecular mass M_r from M_r = M_u/M: | 210