Answer:- 0.0634 M
Explanation:
molarity is defined as the number of moles of solute in 1 L of solution 
molar mass of Ni(NO₃)₂ - 182.7 g/mol
number of moles of Ni(NO₃)₂ - 5.80 g/ 182.7 g/mol = 0.0317 mol
number of moles in 500 mL - 0.0317 mol
therefore number of moles in 1000 mL - 0.0317 mol / 500 mL x 1000 mL/L 
molarity of the solution is - 0.0634 M
 
        
             
        
        
        
Since the synthesizer is an electronic instrument, oscillation is not a factor in sound generation is a false statement.
<h3>
What is oscillation in sound?</h3>
An oscillation is known to be that which need to be forced of it is in line or in response to an kind of excitation or free vibration.
Hence in the case above, Since the synthesizer is an electronic instrument, oscillation is not a factor in sound generation is a false statement.
Learn more about sound generation from
brainly.com/question/23749502
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The company should choose the cylinder because it has approximately 11.6 cubic inches less wasted space than the prism. 
<h3>What are the volumes of the ball, prism and cylinder?</h3>
The volume of the ball is calculated from its radius.
Radius of the ball = 1.5 inches 
Volume of the spherical ball = 14.14 cubic inches
Volume of two balls = 28.28 cubic inches
Volume of prism = 54 cubic inches 
Volume of cylinder = 42.41 cubic inches
Difference between volumes = 11.6 cubic inches 
Therefore, the company should choose the cylinder because it has approximately 11.6 cubic inches less wasted space than the prism.
Learn more about volume of cylinder and square-based prism at: brainly.com/question/5219097
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D. All of the are important features of this model
 
        
             
        
        
        
Ben I do want that answer key