Answer:
17%
Explanation:
Given parameters:
Atomic mass of nickel isotope = 57.9g/mol
Experimental value of atomic mass = 59.6g/mol
Unknown:
Percentage error in the measurement.
Solution:
The percentage error shows how much uncertainty was introduced into a measurement. To calculate this, we simply use the expression below:
Percentage error =
Percentage error = x 100 = 17%
Answer:
Final pressure of the air inside is 0.83atm
Explanation:
Boyle's law is the gas law that relates the change in volume when pressure change at constant temperature and vice versa. The equation is:
P₁V₁ = P₂V₂
<em>Where P is pressure and V is volume of 1, initial state and 2, final state of the gas</em>
<em />
Replacing:
P₁ = 0.5atm
V₁ = 2.5L
P₂ = ?
V₂ = 1.5L
P₁V₁ = P₂V₂
0.5atm*2.5L = P₂*1.5L
0.83atm = P₂
<h3>Final pressure of the air inside is 0.83atm</h3>
<em />
Vectors include magnitude & direction so the third option is the correct answer :)
In this item, it is assume that we are to express the dissociation of the formula unit given to be FeCl₂ into its ionic components.
As seen in the chemical formula, the unit is composed of iron (Fe) and chlorine (Cl). The dissociation is written as follows;
FeCl₂ --> Fe²⁺ + Cl⁻
This equation is balanced by multiplying the appropriate component with a number that would equate the number of atoms in both sides of the equation.
<em> FeCl₂ --> Fe²⁺ + 2Cl⁻</em>
Answer:
1. How did life begin?
2. Are we alone in the universe?
3. What makes us human?