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What does x represent in the formula for the compound xcl4?
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Compare and contrast physical changes with chemical changes.
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Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.
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When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from...
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