What is the average atomic mass (in amu) of element m
1 answer:
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Answer:
0.020 mol
Explanation:
Let's consider the following relations:
- 20 drops of a liquid have a volume of 1 mL.
- The density of the solution is 1.685 g/mL, that is, each milliliter of solution has a mass of 1.685 g of solution.
- There are 85 g of phosphoric acid per 100 grams of solution (85 % by weight).
- The molar mass of phosphoric acid is 97.99 g/mol
With these relations, we can calculate the moles of phosphoric acid in 27 drops of solution.
<u>Answer:</u> The boiling point of water in Tibet is 69.9°C
<u>Explanation:</u>
To calculate the boiling point of water in Tibet, we use the Clausius-Clayperon equation, which is:
where,
= initial pressure which is the pressure at normal boiling point = 1 atm = 760 mmHg (Conversion factor: 1 atm = 760 mmHg)
= final pressure = 240. mmHg
= Heat of vaporization = 40.7 kJ/mol = 40700 J/mol (Conversion factor: 1 kJ = 1000 J)
R = Gas constant = 8.314 J/mol K
= initial temperature or normal boiling point of water =
= final temperature = ?
Putting values in above equation, we get:
Converting the temperature from kelvins to degree Celsius, by using the conversion factor:
Hence, the boiling point of water in Tibet is 69.9°C
Answer:
2 double bonds and 1 single bond
Explanation:
The structural formular of the chlorate ion is given in the attached image.
The bonds present are;
- A single bond between Cl and O
- Two double bonds between Cl and O
