A chemist must prepare 850.0 mL of potassium hydroxide solution with a pH of 12.60 at 25 °C. She will do this in three steps: • Fill a 850.0 mL volumetric flask about halfway with distilled water. • Weigh out a small amount of solid potassium hydroxide and add it to the flask. . Fill the flask to the mark with distilled water. Calculate the mass of potassium hydroxide that the chemist must weigh out in the second step. Round your answer to 2 significant digits. 6.0 0x10 X Ś ?

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A chemist must prepare 850.0 mL of potassium hydroxide solution with a pH of 12.60 at 25 °C.
She will do this in three steps:
• Fill a 850.0 mL volumetric flask about halfway with distilled water.
• Weigh out a small amount of solid potassium hydroxide and add it to the flask.
.
Fill the flask to the mark with distilled water.
Calculate the mass of potassium hydroxide that the chemist must weigh out in the second step. Round your answer to 2 significant digits.
6.0
0x10
X
Ś
?
Transcribed Image Text:A chemist must prepare 850.0 mL of potassium hydroxide solution with a pH of 12.60 at 25 °C. She will do this in three steps: • Fill a 850.0 mL volumetric flask about halfway with distilled water. • Weigh out a small amount of solid potassium hydroxide and add it to the flask. . Fill the flask to the mark with distilled water. Calculate the mass of potassium hydroxide that the chemist must weigh out in the second step. Round your answer to 2 significant digits. 6.0 0x10 X Ś ?
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