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Calculate the number of kilojoules to warm 125 g of iron from 23.5Β°c to 78.0Β°c.
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Chemistry, 23.06.2019 08:50
Reacting masses1 calcium carbonate breaks down on heating to produce calcium oxide and carbondioxide gas.caco3 + cao + co2a student heats 15 g of calcium carbonate strongly in a crucible.relative atomic masses (a): ca = 40, c = 12, o = 16.calculate the mass of calcium oxide produced by this reaction.(5 marks)
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Chemistry, 23.06.2019 10:30
If a computer chip switches off -on-off in 0.015 us, what is the switching time in nanoseconds?
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5. the nucleus of an atom is (1 point)
o the central core and is composed of protons and neut...
o the central core and is composed of protons and neut...
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