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Nalu Nalu
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Posts: 823
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6 years ago
In the developing solution, which chemical blackens the exposed silver halide crystals?
 a. Sodium sulfite
  b. Sodium carbonate
  c. Hydroquinone
  d. Potassium bromide
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whitneyracquelwhitneyracquel
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6 years ago
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This helped my grade so much Perfect
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