Chemistry, 29.10.2020 04:10 daltonbrown4
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1) The molecular mass of aluminum sulfate is 342 g/mol. You find through experimentation that the ratio of mass of dry salt to mass of hydrate is a ratio of close to 3/5. What is the percentage water by mass in the hydrate?
2)The molecular mass of anhydrous aluminum sulfate is 342 g/mol. The precise ratio of mass of anhydrous salt to hydrate is 61%. What is the approximate mole ratio of water to salt for aluminum sulfate hydrate? Express your answer as an integer.
3)A 2.914 g sample of gypsum (hydrated calcium sulfate, CaSO4) is heated in a crucible until it reaches a constant mass. The mass of the anhydrous CaSO4 is 2.304 g. How many millimoles of calcium sulfate remain after the heating?
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Astring vibrates with a frequency of 10 hz. why can't a person hear the sound waves produced by the vibrating string, no matter how large the amplitude of the waves? out! this is homework and due tomorrow! you so much!
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Someone please, help me, I need the answers urgent
1) The molecular mass of aluminum sulfate is 342...
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