Answer:
The older scientist were ignorant
Explanation:
they thought that they were better than the younger scientist. to put it in simply they were ignorant to think younger is worse
 
        
                    
             
        
        
        
You correctly said that you need the combined gas law. 
combine gas law----> P1V1/T1= P2V2/T2
P1= ?
V1= 2.58 L
T1= 368K
P2= 777 torr
V2= 1.53 L
T2= 495K
Now we plug in the values. 
(P1 X 2.58)/ 368= (777 X 1.53)/ 495 K
P1= 343 torr
        
             
        
        
        
Answer:
two electrons
Explanation:
Since every electron has a single negative charge, the addition of two electrons results in an oxygen ion with a charge of - 2
 
        
             
        
        
        
Many forensic tools that are available now were not available in the 15th century. For starters, microscopes did not exist in the fifteenth century so no finer details could be examined on documents. Now, there exist many different types of microscopes. Moreover, with new methods such as carbon dating, the age of different documents may be determine. 
All of these differences from the fifteenth century have helped forensic analysts better analyze documents than analysts in the past could.
        
             
        
        
        
Standard:560,000
Short form: 560 thousand
Word form: Five hundred six hundred thousand
Expanded form: 500,000+60,000