Answer:
<h2>Sodium Sulfide</h2>
Explanation:
Na2s means two sodium atoms and 1 sulfur atom. Sodium Sulfide is the answer. There isn't really a way to explain further.
<em>PLEASE MARK BRAINLIEST</em>
The cylinder's acceleration is
θ
<h3>
How do you determine a cylinder's acceleration?</h3>
The cylinder's complete radius, 
, from the center marks the contact point, therefore the torque created by friction is given by 
, where is the rotating acceleration. This rotational acceleration's corresponding linear acceleration, 
, is equal to . The cylinder, which has its mass concentrated in its center, triumphs in the competition, followed by the disc and the hoop, with their respective final velocities being roughly 
. We can also see that our findings are unaffected by the cylinders' masses.
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It should be 0.25 M. Use the formula C1*V1=C2*V2, for those values, as it is right when it changed colour. Remember to change the if those are not the same (but in your case it is, so no need this time).
C1*V1=C2*V2
C1*27ml=0.55M*12.5ml
C1=(0.55M*12.5ml)/27ml = 0.25M
Because if you have a liquid then you need a glass to keep it together and when it is a solid it is already together so you don't need to do anything
