Please help me, im studying for finals and i need an answer to this question! Will mark brainliest for the answers that are the
best!
1 answer:
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"0.538 g" would be the mass of the water.
Given values are:
Hydrated salt,
- 1.167 g
Anhydrous salt,
- 0.629 g
→ The mass of water lost by the salt will be:
=
By substituting the given values, we get\
=
=
Thus the above answer is appropriate.
Learn more:
Answer: The boiling point of water at 81 kPa will be 298.17 K.
Explanation:
The boiling point of water is 373 K at atmospheric pressure. So, to calculate the boiling point at 81 kPa, we use the law given by Gay-Lussac.
Gay-Lussac Law states that pressure is directly proportional to the temperature when volume and moles remain constant.
Mathematically,
where,
= Initial pressure and temperature
= Final pressure and temperature
We are given:
Putting values in above equation, we get:
Hence, the boiling point of water at 81 kPa will be 298.17 K.