Determine the unknown mineral using the Information given below. Be sure to use significant figure rules when doing calculations. Mass is shown on the triple beam. 0 100 200 300 400 500 600 700 800 900 0 10 20 30 40 50 60 70 90 90 7 2 5 6 7 8 9 w Scale Test Mineral Mineral H. Density, g/cc 2.07 10 diamond tellurium 2 corundum 2.5 7.58 0 00 N galena anglesite chalcocite 2.5-3 6.4 2.5 - 3 5.6 topaz quartz feldspar apatite fluorite copper 2.5 - 3 9.0 5 gold 19.3 2.5 - 3 4 silver 2.5 - 3 10.5 O M N = calcite arsenic 3.5 5.7 barite 3 -3.5 gypsum 4.4 talc dolomite 3.5 -4 2.9 platinum 4.5 21.5 willemite 5.5 4.0 magnetite 6 5.18
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Chemistry, 22.06.2019 20:00
There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .
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Chemistry, 22.06.2019 22:30
Which of the following is not an assumption that scientists must make about the natural world? a. regularity b. causality c. predictability d. plausibility
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Determine the unknown mineral using the Information given below. Be sure to use significant figure r...
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