Answer:
a. 1.49%
b. -8.95%
c. 0%
d. -1.49%
Explanation:
a. Actual length = 6.7 m
Measured length = 6.8 m
% error = (Measured length - Actual Length)/Actual Length * 100
= (6.8-6.7)/6.7 * 100 = 0.1/6.7 * 100 = 1.49%
b. Actual length = 6.7 m
Measured length = 6.1 m
% error = (Measured length - Actual Length)/Actual Length * 100
= (6.1-6.7)/6.7 * 100 = -0.6/6.7 * 100 = -8.95%
c. Actual length = 6.7 m
Measured length = 6.7 m
% error = (Measured length - Actual Length)/Actual Length * 100
= (6.7-6.7)/6.7 * 100 = 0.1/6.7 * 100 = 0%
a. Actual length = 6.7 m
Measured length = 6.6 m
% error = (Measured length - Actual Length)/Actual Length * 100
= (6.6-6.7)/6.7 * 100 = -0.1/6.7 * 100 = -1.49%
 
        
             
        
        
        
Answer:
I think they are <u>unrelated.</u>
Explanation:
 
        
                    
             
        
        
        
Answer:
The approximate age of the igneous rock is  years.
 years.
Explanation:
Chemically speaking, the Uranium-235 decays to form Lead-207 throughout time. All isotopes decay exponentially by means of the following model:
 (1)
 (1)
In addition, we can determine the time constant of the former isotope in terms of its half life, that is:
 (2)
 (2)
Where:
 - Initial mass of Uranium-235, in atoms.
 - Initial mass of Uranium-235, in atoms.
 - Current mass of Uranium-235, in atoms.
 - Current mass of Uranium-235, in atoms.
 - TIme constant, in years.
 - TIme constant, in years.
 - Half-life of Uranium-235, in years.
 - Half-life of Uranium-235, in years.
Please remind that a 1 : 1 ratio of Uranium-235 to Lead-207 atoms means that current mass of Uranium-235 is a half of its initial mass. If we know that  and
 and  , then the approximate age of the igneous rock is:
, then the approximate age of the igneous rock is:





The approximate age of the igneous rock is  years.
 years.
 
        
             
        
        
        
Answer:
53.6 grams of silver chloride was produced.
Explanation:

Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form. 
This also means that total mass on the reactant side must be equal to the total mass on the product side.
Mass of silver nitrate = 50.0 g
Mass of hydrogen chloride = 50.0 g
Mass of silver chloride = x
Mass of  nitric acid = 46.4 g
Mass of silver nitrate + Mass of hydrogen chloride =
                              Mass of silver chloride + Mass of  nitric acid
[te]50.0 g+50.0 g=x+46.4 g[/tex]

53.6 grams of silver chloride was produced.
 
        
             
        
        
        
The correct answer for the question that is being presented above is this one: "They are both balanced chemical equations." The <span>statement that is correct about the chemical reaction is that both chemical reaction are balanced chemical equations.</span>