Question: can someone help with this and show work pleass Solve the grobjems on paper and upload a .pdi. No need to write down the questions,

can someone help with this and show work pleass

Solve the grobjems on paper and upload a .pdi. No need to write down the questions, just mumber theen. Show your work and use correct units and senificant figures. 1) Ks yraphite a pure substance? Why? 2) Is evaporation a plyysical change or a chernical change? Why? 4) Convert 19.2M1 to calories. Alower case calories? 5) You discolve some sait in water and the water gets colder. Is this proceis exothermic or endotheric? Dees heat get refeased from the iniveure or enter the mixture fromi the wrroundings? 6) The coldest low in San Diego was 25.0.\%F. Convert 25.07k to ' C and to K. Show your work and watdh SF'y. The numbers in the teinperature conversion formuas are exact numbers havine infinite precision so ther dont limat your SF's 7) How much heat is required to warm 2000g of wate from 11C to 51C for a shower

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