Biology

Biology, 18.07.2019 13:00, natalie2sheffield

Asap pls why do you think that even though a hot tub is smaller than a pool, the concentration on chlorine needed is greater? (think about temperature).

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Mathematics, 27.07.2019 14:30, ejdjsnsb

The scale factor of two similar swimming pools is 4: 7. the amount of a chlorine mixture to be added is proportional to the volume of water in the pool. if 3 cups of the chlorine mixture are needed for the smaller pool, how much of the chlorine mixture is needed for the larger pool?

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Chemistry, 12.08.2019 23:30, michealjackson2002

Chlorine is used to disinfect swimming pools. the accepted concentration for this purpose is 1 ppm chlorine, or 1 g of chlorine per million grams of water. calculate the volume of a chlorine solution (in milliliters) a homeowner should add to her swimming pool if the solution contains 6.0 percent chlorine by mass and there are 2.0 x 10^4 gallons (gal) of water in the pool (1 gal =3.79 l; density of liquids= 1.0 g/ml).

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Engineering, 13.09.2019 18:30, nataliemoore1974

A200 m3 swimming pool has been overly chlorinated by accidently dumping an entire container of chlorine, which amounted to 500 grams. this creates a chlorine concentration well in excess of the 0.20 mg/l that was the objective at the time. with which volumetric rate (in l/min) of freshwater should the pool be flushed to decrease the concentration to the desired level in 36 hours? you may assume the chlorine does not degrade chemically during those hours.

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Physics, 24.09.2019 01:30, jessiegarrison1

You decide it is time to clean your pool since summer is quickly approaching. your pool maintenance guide specifies that the chlorine, cl2, concentration of the pool should be between 1 and 3 ppm. in order to determine if your pool is safe to swim in, you send a sample of pool water to a chemist for analysis of the cl2 content. the chemist reports a chlorine concentration of 2.96 × 10–5 m. convert the concentration of cl2 to parts-per-million (ppm).

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