Answer:
The answer to your question is    Final volume = 58.37 ml
Explanation:
Data
density = 8.96 g/cm³
mass = 75 g
volume of water = 50 ml
Process
1.- Calculate the volume of copper
   Density = mass / volume
Solve for volume
   Volume = mass / density
Substitution
   Volume = 75/8.96
Simplification
   Volume = 8.37cm³    or 8.37 cm³
2.- Calculate the new volume of water in the graduated cylinder
   Final volume = 50 + 8.37
   Final volume = 58.37 ml
 
        
             
        
        
        
What effect does removing predators have on prey? 
:It means that as they are removed the predators go hungry and they could become extinct.
Hope I helped!
        
                    
             
        
        
        
The molar mass of the unknown gas is 184.96 g/mol 
<h3>Graham's law of diffusion </h3>
This states that the rate of diffusion of a gas is inversely proportional to the square root of the molar mass i.e 
R ∝ 1/ √M
R₁/R₂ = √(M₂/M₁) 
<h3>How to determine the molar mass of the unknown gas </h3>
The following data were obtained from the question:
- Rate of unknown gas (R₁) = R
- Rate of CH₄ (R₂) = 3.4R
- Molar mass of CH₄ (M₂) = 16 g/mol 
- Molar mass of unknown gas (M₁) =? 
The molar mass of the unknown gas can be obtained as follow:
 
R₁/R₂ = √(M₂/M₁) 
R / 3.4R = √(16 / M₁) 
1 / 3.4 = √(16 / M₁) 
Square both side 
(1 / 3.4)² = 16 / M₁
Cross multiply 
(1 / 3.4)² × M₁ = 16
Divide both side by (1 / 3.4)²
M₁ = 16 / (1 / 3.4)²
M₁ = 184.96 g/mol 
Learn more about Graham's law of diffusion:
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C₂H₆O is referred to the chemical formula corresponds to this structural formula and is denoted as option D.
<h3>What is Chemical formula?</h3>
This contains information about the chemical proportion of atoms present in a molecule.
In this scenario, there are two carbon atoms, six hydrogen atoms and one oxygen atom which can be written as C₂H₆O. This is therefore the most appropriate choice in this scenario.
Read more about Chemical formula here brainly.com/question/26388921
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