Louisa found that she could melt 150g of lead at 3275 C. At what temperature could she melt 75g of lead?

She could melt 75g of lead at 1637.5 C

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Year  1936,  lehman predicted that the earths 'inner core' is solid. she observed that the seismic signals during her study were bent and did not pass through instead bouncing back. later it was confirmed that the earth's inner core was solid made up of nickel-iron and had a molten outer core.