Answer:
A pH less than 7 is an acid, with number 1 indicating stronger acids
Explanation:
The pH scale has a range of 1 to 14. The following has been concluded on the pH scale:
1. Between 1 and 6 indicates an acid solution.
2. 7 indicates a neutral solution
3. Between 8 and 14 indicates an alkaline or basic solution.
Now with these information, we can answer the above questions as follow:
A pH less than 7 is an acid, with number 1 indicating stronger acids
Number of moles = 2.00
Volume = 4.00 L
M = n / V
M = 2.00 / 4.00
M = 0.5 mol/L
hope this helps!
Answer:
The volume of gold is 3.3 cm³.
Explanation:
Density:
Density is equal to the mass of substance divided by its volume.
Units:
SI unit of density is Kg/m³.
Other units are given below,
g/cm³, g/mL , kg/L
Formula:
D=m/v
D= density
m=mass
V=volume
Symbol:
The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.
Given data:
Mass of gold = 63 g
Density of gold = 19.32 g/cm³
Volume of gold = ?
Solution:
d = m/v
v = m/d
v = 63 g/ 19.32 g/cm³
v = 3.3 cm³.
Answer:
- <u>A saturated solution</u>
Explanation:
The solutions that contain the maximum amount of solute that can be dissolved at the given temperature (and pressure). are called saturated solution.
The term saturated means that the solution cannot dissolve more solute at the given conditions of temperature and pressure.
The solubility of solutes are reported in tables or graphs. They tell the amount of solute (usually in grams) that can be dissolved at different temperatures in an amount of solvent or solution (usually in 100 grams of solvent).
The solutions that have less solute that they can dissolve are named unsaturated. And those solutions that contain more dissolved solute than what they can dissolve (an unstable condition) are called supersaturated. Normally, a supersaturated solution will not hold that amount of solute for long because even a small movement will produce the precipitaion of part of the solute, bringing the solution to the saturation point.