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Compare and contrast physical changes with chemical changes.
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How does the motion of particles in a gas change as the gas cools
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Complete each row of the table below by filling in the missing prefix or missing exponent.
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Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.
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Which two minerals are softer than a human finger nail 1)calcite and halite 2)sulfer and fluoriye...
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