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MMLU-Pro / 3607 / Solder is a lead-tin alloy. 1.00 gram of the alloy treated with warm 30 % HNO_3…

Problem

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question

Solder is a lead-tin alloy. 1.00 gram of the alloy treated with warm 30 % HNO_3 gave a lead nitrate solution and some insoluble white residue. After drying, the white residue weighed 0.600 g and was found to be SnO_2. What was the percentage tin in the sample? Sn + 4HNO_3 + SnO_2 + 4N_2 + 2H_2O

category

chemistry

options

  1. 42.3 %
  2. 29.4 %
  3. 35.6 %
  4. 44.7 %
  5. 38.5 %
  6. 47.2 %
  7. 60.8 %
  8. 50.1 %
  9. 55.0 %
  10. 32.9 %

src

stemez-Chemistry

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Source and history

upstream_id / Original problem ID
3607
task_id
9a5adc78-e53d-5084-a44f-3e78b6a2c66d
task_key
default--test--3607
task_revision_id
1
config / split
default / test

Official source

initial import