Yes, It is important to know the volume of Unknown acid or base to be titrated.
Titration is carried out in order to find out the concentration (i.e. molarity) of unknown acid or base. In this process a standard solution of acid or base is taken and is titrated with known volume of of titrant. At end point (neutralization) the amount of standard titrant utilized is calculated and following formula is employed to calculate the unknown concentration of unknown solution.
M₁V₁/n₁ = M₂V₂/n₂
Metals in their pure form are highly flammable. In this item, we are given with the pure magnesium metal in ribbon form reacting with oxygen in the combustion process. The equation that would best illustrate this given is,
2Mg + O₂ --> 2MgO
In this item, we are to determine the amount of MgO that can will be formed.
Magnesium
(4.81 g)(1 mol Mg/24.31 g Mg)(2 mol MgO/2 mol Mg)(40.3 g MgO/1 mol MgO)
= 7.97 g MgO
Oxygen
(7.46 g)(1 mol O2/32 g O2)(2 mol MgO/1 mol O2)(40.3 g MgO/1 mol MgO)
= 18.79 g MgO
This means that the amount of MgO produced is 7.97 g.
Answer:
Blood is a tissue
there are two types of blood cells thus white and red blood cells
<span>a. 3.1 calories in heat were released by the burning candy bar sample
b. The energy value of the sample was 3.1 Cal/g
c.The total caloric content of the candy bar is 232.5 Calories, derived by multiplying the total mass of the candy bar by its fuel value per gram</span>