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The red line of the hydrogen emission spectrum has a wavelength of 656.1 nm. calculate the energy of one photon
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Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?
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Asample of tin (ii) chloride has a mass of 0.49 g. after heating, it has a mass of 0.41 g. what is the percent by mass of water in the hydrate? %
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Reactions in cells take place at about a. 40°c b. 0° c. 100°c d. 60°c
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The red line of the hydrogen emission spectrum has a wavelength of 656.1 nm. calculate the energy of...
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