An aqueous solution has 0.0065 g of oxygen dissolved in 2.5 L  of water. Calculate the dissolved oxygen concentration of this solution in parts per million. What mass of solute, in mg, is present in a 250 mL sample of potassium chloride solution with a concentration of 4.6 ppm? In some areas, drinking water is fluoridated to reduce tooth decay. The maximum acceptable concentration (MAC) of fluoride ions in drinking water is 1.50 ppm.

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An aqueous solution has 0.0065 g of oxygen dissolved in 2.5 L  of water. Calculate the dissolved oxygen concentration of this solution in parts per million.

What mass of solute, in mg, is present in a 250 mL sample of potassium chloride solution with a concentration of 4.6 ppm?
In some areas, drinking water is fluoridated to reduce tooth decay. The maximum acceptable concentration (MAC) of fluoride ions in drinking water is 1.50 ppm.

In Dublin, California, a malfunction occurred in the fluoridation equipment caused fluoride levels to rise as high as 200 ppm. This resulted in many people becoming ill.

During the malfunction, 639 kg of fluoride ions where injected into a storage tank of water. Given that the resulting concentration was 200 ppm, calculate the volume, in ML, of the water storage tank.

 

 

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