i would say 4 because 4 is a gross number
In a double displacement reaction hydrogen chloride and sodium hydroxide react to produce sodium chloride, another product is WATER.
NaOH + HCl ----> NaCl + H₂O
The density of the spoon : 1.2 g/cm³
<h3>Further explanation</h3>
Given
mass of the spoon = 30 g
volume = 25 ml
Required
Density
Solution
Density is a quantity derived from the mass and volume
Density is the ratio of mass per unit volume
Density formula:
ρ = density
m = mass
v = volume
Input the value :
ρ = 30 g : 25 ml
ρ = 1.2 g/ml
The law that relates temperature, pressure, volume, and the number of moles of a gas under perfect conditions is ideal gas law (option C).
<h3>What is ideal gas law?</h3>
Ideal gas law in physics refers to the equation of state of an ideal gas. The law equation is as follows:
PV = nRT
Where;
- P = pressure
- V = volume
- n = number of moles
- T = temperature
- R = gas law constant
Therefore, it can be said that the law that relates temperature, pressure, volume, and the number of moles of a gas under perfect conditions is ideal gas law.
Learn more about ideal gas law at: brainly.com/question/13821925
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