Molarity (M) Horizontal (±0.05cm) Vertical (±0.05cm) ?4 (Degrees) n2 Uncertainty 0 137.2 66.5 55.86 1.341 0.00026 0.2 137.2 69.5 56.86 1.351 0.00026 0.4 137.2 72.4 57.82 1.361 0.00025 0.6 137.2 74 58.34 1.366 0.00025 0.8 137.2 76.7 59.21 1.375 0.00024 1 137.2 79.1 59.96 1.382 0.00023 1.2 137.2 81.9 60.83 1.39 0.00023 1.4 137.2 84 61.48 1.396 0.00022 1.6 137.2 86.2 62.14 1.402 0.00021 1.8 137.2 88.4 62.79 1.407 0.00021 2 137.2 89.4 63.09 1.41 0.00021 2.2 137.2 93.6 64.3 1.42 0.0002