Answer:
0.0560 mol
Explanation:
You need to use the ideal gas law equation:
P = 750 torr
V = 1.35 L
n = moles
R = 62.364 L torr
T = 17.0 ˚C + 273.15 = 290.15 K
Rearranging the equation for n:
n = 0.0560 mol
<span>An acid. Nonmetal oxides such as sulfur trioxide or nitrous oxide will combine with water to make, respectively, sulfuric acid and nitric acid. Nonmetal is a characteristic of an element within the oxide that is not oxygen. An oxide is a compound that contains at least one oxygen atom combined with another element.</span>
First, determine the amount of substance in moles by dividing the given amount in grams by the molar mass.
17.8 grams LiF x (1 mole / 25.94 grams LiF) = 0.686 moles LiF
Divide this amount of substance by the volume of the solution in liters.
molarity = 0.686 moles LiF / 0.915 L sol'n
The molarity is therefore, 0.75 M.
Atomic radius is the distance from the nucleus to the last valance electron up to which the effect nucleus can be felt. The size of the atom depends on the Electrostatic interaction between nucleus and electron. Number of atomic orbitals present. With the increase in numbers of orbitals down the group the size of the atom increases. Again, as the numbers of electrons increases in the period ,the electrostatic interaction between nucleus and electron increases along the period. Therefore, size of atoms decreases along the period.
As expected the element with highest atomic radius is the last element of group 1 , Which is FRANCIUM ( Fr)