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MissTica
3 years ago
11

A student mixes 86.3 g of water at 50.3°c with 60.9 g of water at 16.7°c in an insulated flask. what is the final temperature of

the combined water?
Chemistry
1 answer:
AlekseyPX3 years ago
8 0
Forget it boi im a savage
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Answer:

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Explanation:

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Explanation:

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3 years ago
The mass of a 50-mL volumetric flask is 40.638 g. After adding 15.0 mL of 95% ethanol and adding enough water to complete the vo
Nuetrik [128]

Answer

0.9516 grams / mL (50.00 has 4 sig digs.)

Remark

You have a couple of extraneous numbers there. You don't care about anything except the mass of the flask +  water/alcohol mixture  (88.219 grams). and the mass of the flask (40.638 grams)

Formulas

  • mass water/alcohol mixture = mass of the flask with fluid - mass flask
  • density = mass / volume

Solution

mass water/alcohol mixture = 88.219 - 40.638 = 47.581

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  • Density = 47.581/50
  • Density = 0.95162  There are 4 sig digs so the answer should be
  • 0.9516
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Chemist determined by measurements that 0.015 moles of nickel participated in a chemical reaction. Calculate the mass of nickel
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Mass of Ni = 0.015 mol Ni × (58.693 g Ni/1 mol Ni) = 0.88 g Ni

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