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Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.
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The molality of calcium chloride (cacl2) in an aqueous solution is 2.46 m. what is mole fraction of the solute?
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Which of these statements best explains why space exploration should be encouraged? it prepares humans to live without oxygen. it dispel myths about objects in space. it prevents comets and asteroids from striking earth. it creates technology to absorb harmful radiations in space.
Answers: 1
To an engineer, identifying a need means that .
a project must be thoroughly researched
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