Agas originally occupying 10.1 l at 0.925 atm and 25 c is changed to 12.2 l at 625 torr. what is the new temperature?

We can use the combined gas law equation to find the new temperature 

parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation 
P - pressure 
P1 - 0.925 atm x 101 325 Pa/atm = 93 726 Pa
P2 - 625 torr x 133 Pa/torr = 83 125 Pa
V - volume 
V1 - 10.1 L
V2 - 12.2 L
T - temperature in kelvin
T1 -  25 °C + 273 = 298 K
substituting these values in the equation

T = 319 K
temperature in celsius - 319 K - 273 = 46 °C

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom