Chemistry, 16.12.2021 04:40 robert7248
The average electric bill in a residential area is $72 for the month of April. The standard deviation is $6. If the amounts of the electric bills are normally distributed, find the probability that the mean of the bill for 15 residents will be less than $75. Round your answer to the nearest ten thousandth.
Answers: 3
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Determine the wavelength of the light absorbed when an electron in a hydrogen atom makes a transition from an orbital in the n=3 level to an orbital in the n=7 level.
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An alkaline battery produces electrical energy according to the following equation. zn(s) + 2 mno2(s) + h2o(l) zn(oh)2(s) + mn2o3(s) (a) determine the limiting reactant if 17.5 g zn and 31.0 g mno2 are used. (type your answer using the format ch4 for ch4.) (b) determine the mass of zn(oh)2 produced. _ g
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Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.
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The average electric bill in a residential area is $72 for the month of April. The standard deviatio...
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