1. For determining the specific gravity of soil solids, using a pycnometer of 500 cc, the following data is available: Weight of dry empty pycnometer(W₁) = 125 g; Weight of dried soil and pycnometer(W₂) = 500 g; Weight of dried soil and distilled water filled to the top of the pycnometer(W₃) = 850 g. Determine the specific gravity of the soil.