No. It appears behind the equation
If the ratio of mass to volume is higher, then density is higher. If the ratio of mass to volume is lower, the density is lower.
Explanation :
According to the Bronsted Lowry concept, Bronsted Lowry-acid is a substance that donates one or more hydrogen ion in a reaction and Bronsted Lowry-base is a substance that accepts one or more hydrogen ion in a reaction.
Or we can say that, conjugate acid is proton donor and conjugate base is proton acceptor
The given equilibrium reaction is,

In this reaction,
and
are act as Bronsted Lowry base and acid respectively and
and
are act as Bronsted Lowry acid and base respectively.
The formula of conjugate of
is, 
The formula of conjugate of
is, 
Answer:
Ethos, because she is using her own knowledge as a tool.
Explanation:
Harriet Tubman was an activist and served as a spy for Union Army. <u>'Harriet Tubman: Conductor on the Underground Railroad'</u> is a book written by Ann Petry narrating the accounts of life of Harriet Tubman who helped free 300 slaves using the paths of Underground Railroad.
In the given excerpt, Tubman has used the rhetorical appeal of 'ethos' as she is using her own knowledge as a tool. While rescuing slaves using Underground Railroad, Tubman made up several stories to keep the slaves moving and encourage them in their paths of freedom. The path for freedom was dangerous, and Tubman knew that some may back up from this, so she kept telling them about people who chose to struggle for freedom, made up stories about them and used this knowledge as a tool to keep the slaves encouraged and motivated. And no one asked her even one question as they trusted her (credibility-- element of ethos).
Thus, the tool Tubman has used in the given excerpt is ethos.
Answer:
14mph
Explanation:
270 minutes = 4 hr and 1/2hr
63 miles = 63/4.5 = 14 miles per hour
Making the speed 14mph
Equation = h = 4.5
(4h x 4h ) + (1 x 311/100) = 60
= 4h x 4h +( 1 x 311/100) =60
= 16h^2 + (1 x 311/100) =60
= 256h + (1 x 311/100) =60
= 256h + 14 = 60
= 270h = 60
= h = 4.5