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Iron reacts with sulfur to form iron sulfide. if 60 grams of iron reacts with sulfur to produce 90 grams of iron sulfide, how much sulfur has been used in the chemical reaction?
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If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.
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The diagram shows a boulder rolling down a hill into a valley and then up the opposite hill. at which position does the boulder have the greatest kinetic energy? ab c d
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What energy transformations occur each time the skateboarder rolls up the ramp?
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If forces acting on an object are unbalanced, the object could experience a change in . mass, speed,...
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