concentration of O₂ dissolved in H₂O can be written as ppm
ppm stands for parts per million - mg/kg
the amount of mg in 1 kg of solution
the mass of O₂ - 0.008 g
1000 mg equivalent to 1 g
therefore mass of O₂ in mg - 0.008 g x 1000 mg/g = 8 mg
the mass of water is 1000 g
1000 g is equivalent to 1 kg
mass of water in kg - 1000 g / 1000 g/kg = 1 kg
there's 8 mg of O₂ in 1 kg of water
therefore concentration of O₂ is - 8 mg/kg
also can be written as 8 ppm
answer is 8 ppm
Answer:
The property of metals that is the result of light reflecting off the electrons is
A. shiny
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Answer:</h2>
1. Dependant Variable
2. Scientific Method
3. Data
4. Consistency
5. Metric Balance
6. Mean
7. Technology
8. Dependant Variable
9. Hypothesis
10. Spring Scale
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Explanation:</h2>
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(>‿◠)✌</h2>
Put water in it and the salt will dissolve and the sand will stay at the bottom