Answer:
The mean of the 12 Zambian One kwacha coins is 5.583
Explanation:
Mean = Sum of the total masses ÷ No of different masses
Mean = 5.683+ 5.549 +5.548 + 5.552 + 5.620 + 5.536 + 5.539 + 5.684 + 5.551 + 5.552 + 5.554 + 5.632 ÷ 2
Mean = 67 ÷ 12
Mean = 5.583
The mean of the different Zambian one kwacha coins is 5.583
Answer:
C. SOIL THAT IS A MIXTURE OF STILT AND CLAY
PLS MAKE ME BRAINLEST!
An endothermic chemical reactions products tend to have a higher potential energy than the reactants. Thus making the /\ H positive, not negative.
Conditions such as high pressure and high temperature must occur.
Hey there!
The number of vacancies per unit volume => ( Nv = 2.3*10²⁵ m⁻³ )
Avogrado's number => ( NA = 6.022*10²³ atoms/mol )
Density of material ( p ) in g/m³ :
1 g/cm³ = 1000000 g/m³ so:
7.40 * ( 1000000 ) = 7.40*10⁶ g/m³
Atomic mass = 85.5 g/mol
* Calculate the number of atomic sites per unit volume :
N = NA * p / A
N = ( 6.022*10²³ ) * ( 7.40*10⁶ ) / 85.5
N = 4.45*10³⁰ / 85.5
N = 5.212*10²⁸ atoms/m³
Therefore:
Calculate the fraction of vacancies :
Fv = Nv / N
Fv = 2.3*10²⁵ / 5.212*10²⁸
FV = 4.441*10⁻⁴
Hope that helps!