Yes. Look up Newton’s laws of physics. That should help
You need the solubility of the LiCl in water at 20°C.
The solubilities are shown in tables. Many books contain those tables. You have to make sure that the solubility is shown in the same solvent and at the same temperature that you are going to prepare the solution.
In this case the solubility of LiCl in water at 20°C is 83.05 g of LiCl in 100 g of H2O. Check if your book and your teacher work with the same value.
Using 8.05 g LiCl / 100 g of water you get:
300 g of water * 83.05 g LiCl / 100 g of water = 249.15 g of LiCl.
Answer: 249.15 g of LiCl
The answer is: D) O, F, and Kr.
Atomic radius of bromine (Br) is 114 pm.
Atomic radius of oxygen (O) is 73 pm.
Atomic radius of fluorine (F) is 72 pm.
Atomic radius of krypron (Kr) is 112 pm.
The atomic radius of a chemical element is a measure of the size of its atom.
The atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.
The atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.
1) Neutralization equation:
HBr + NaOH --> NaBr + H2O
2) 1: 1 molar ratio => 1 mol NaOH neutralizez 1 mol HBr
3) M = n / V => n = M*V
=> M*V for NaOH = M*V for HBr
0.01888 l * 0.100M = x * 0.025 l => 0.01888 l * 0.10 M / 0.025 l = 0.0755 M
Answer: 0.0755 M
