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Tresset [83]
3 years ago
7

15.6 grams of lead(II) nitrate is in a test tube. A 4.8-g sample of potassium iodide is an Erlenmeyer flask. The substance in th

e test tube is poured into the Erlenmeyer flask so that the two substances react. The mass of the Erlenmeyer flask 115.6 grams. What is the mass of the combined products & Erlenmeyer flask?
Physics
1 answer:
miv72 [106K]3 years ago
6 0

<u>Answer:</u>

 Mass of combined products = 20.4 grams

 Mass of combined product and Erlenmeyer flask = 136 grams

<u>Explanation:</u>

  By law of mass conservation, mass cannot be destroyed or created. So mass before reaction is mass after reaction.

  Mass of  lead(II) nitrate  = 15.6 grams

  Mass of potassium iodide = 4.8 grams

  Mass of the Erlenmeyer flask = 115.6 grams

  Mass of reactants = 15.6 + 4.8 = 20.4 grams

  So mass of products = 20.4 grams

  Mass of combined product and Erlenmeyer flask = 115.6 + 20.4 = 136 grams

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Answer:

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3 years ago
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Hence, sentences A and D describe examples of energy transformation.

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