Answer: The initial temperature was 263 K
Explanation:
Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.
The combined gas equation is,
where,
= initial pressure of gas = 0.939 atm
= final pressure of gas = 1.00 atm
= initial volume of gas = 9.40 L
= final volume of gas = 10.0 L
= initial temperature of gas = ?
= final temperature of gas = 
Now put all the given values in the above equation, we get:
Thus the initial temperature was 263 K
The internal energy has the symbol U. Q is positive if heat is added to the system, and negative if heat is removed;
....."W is positive if work is done by the system"........
and negative if work is done on the system.
So, work done by a system is positive.
Answer:
The corpuscular model of matter is a model of the microscopic structure of matter, which seeks to explain the properties and behavior in each state of aggregation
Explanation:
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They have seven electrons in their valence shell, so halogens are very reactive.
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Answer:
4. Atoms in crystals are in an ordered array. In amorphous materials, they are randomly distributed.
Explanation:
