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How are visible light and other regions of the electromagnetic spectrum essential tools in the exploration of the universe ?
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Calculate the ph of a .10m nh4cl solution. the kb value for nh3 is 1.8×10^-5
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Which number should be placed before f2 on the reactants side equation to make equation balanced? xe + > xef4
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2.38g of black copper (ii) oxide is completely reduced by hydrogen to give copper and water. what are the masses of copper and water formed? ?
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How are visible light and other regions of the electromagnetic spectrum essential tools in the explo...
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