A positive change atom of hydrogen-ion. A normal hydrogen atomic nucleus
This equation shows how HF, hydrofluoric acid behaves in water.
HF (aq) ----> H+ (aq) + F- (aq). In water acids will dissociate into positive cations and negative anions. The strength or weakness of an acid depends on its ability to dissociate in water. Substances that dissociate completely are strong acids while partial dissociation indicates a weak acid. HF is considered to be a weak acid because it does not completely dissociates in water. There is instead an equilibrium between HF molecules and the dissociates.
<u>Answer:</u> The density of NaCl solution is 3.930 g/mL
<u>Explanation:</u>
We are given:
Mass of cylinder, = 21.577 g
Mass of NaCl and cylinder combined, M = 39.664 g
Mass of NaCl, =
To calculate density of a substance, we use the equation:
We are given:
Mass of NaCl = 18.087 g
Volume of NaCl solution = 4.602 mL
Putting values in above equation, we get:
Hence, the density of NaCl solution is 3.930 g/mL
Skeletal Equation
Ba(NO3)2 + KCl = BaCl2+ KNO3
Balanced equation
Ba(NO3)2 + 2KCl = BaCl2 + 2KNO3