A. it tells the size of the atom
The answer is decomposition. Decomposition is the breakdown of a chemical compound into two or more simpler compounds or elements. Hope this helped
Answer:
A. Heat the solution
Explanation:
To make a supersaturated solution, make a saturated solution of sugar by adding 360 grams of sugar to 100 mL of water at 80 degrees Celsius. When the water cools back down to 25 degrees, that 360 grams of sugar will still be dissolved even though the water should only dissolve 210 grams of sugar.
Onization energy is the energy required to lose an electron and form an ion. The stronger is the attraction of the atom and the electron the higher the ionization energy, and the weaker is the attraction of the atom and the electron the higher the ionization energy. This leads to a clear trend in the periodic table. Given that the larger the atom the weaker the attraction of the atom to the valence electrons, the easier they will be released, and the lower the ionization energy. This is, as you go downward in a group, the ionization energy decreases. So, the element at the top of the group will exhibit the largest ionization energy. <span>Therefore, the answer is that of the four elements of group 7A, fluorine will have the largest first ionization energy.</span>
Answer:
14 g
Explanation:
First, we have to calculate the partial pressure of N₂. We know that the air is 80% nitrogen by volume, which, for a gas mixture, means that the mole fraction of N₂ is 0.80.
We can calculate the partial pressure of N₂ (pN₂) using the following expression:
pN₂ = P . x(N₂)
where,
P is the total pressure
x(N₂) is the mole fraction of N₂
pN₂ = 1.1 atm . 0.80 = 0.88 atm
Then, we can calculate the moles of N₂ using the ideal gas equation.
![P.V=n.R.T\\n=\frac{P.V}{R.T} =\frac{0.88atm.14L}{(0.082atm.L/mol.K).(25 +273)K} =0.50mol](https://tex.z-dn.net/?f=P.V%3Dn.R.T%5C%5Cn%3D%5Cfrac%7BP.V%7D%7BR.T%7D%20%3D%5Cfrac%7B0.88atm.14L%7D%7B%280.082atm.L%2Fmol.K%29.%2825%20%2B273%29K%7D%20%3D0.50mol)
Considering that the molar mass of N₂ is 28.01 g/mol, the mass of N₂ is:
![0.50mol.\frac{28.01g}{mol} =14g](https://tex.z-dn.net/?f=0.50mol.%5Cfrac%7B28.01g%7D%7Bmol%7D%20%3D14g)