Exactly 80 liters of 20% are needed.
Let quantity of 20% alcohol solution be added : x liters
Here is the work:
> x*20% + 40 * 50% = (x+40) * 30%
> x*0.2 + 40*0.5 = (x+40)*0.3 ..(converting percentages into decimal)
> 0.2x + 20 = 0.3x + 12
> 20-12 = 0.3x - 0.2x (Rearranging similar terms)
> 8 = 0.1 x
Hence x = 8/0.1
Ans 80 Litres
Answer:
a ship floats because of the mass and the parts of the ship help with staying on top of the water the buoyancy force is helpful for the ship to float which means weightless-airlessness and lightness.
Explanation:
The plot is simply defined as what takes place or happens in a story. The plot techniques that the writer use to keep the reader engaged is the slow pace builds suspense and Foreshadowing hints at Boxer's fate.
A good plot is based on a specific moment. A story without a good plot can be boring and people may not like it.
It can be an interruption of a pattern, or an action that leads to raises a dramatic question, which is answered as the course of the story goes.
For every good story, there should be a good plot outline.
Learn more from
brainly.com/question/12800579
Studying will aid students perparing for tests.
When ice is added to the water, there will be an energy flux from the water to the ice.
<h3>
How does heat flux work?</h3>
When we have a system with two objects of different temperatures, to reach equilibrium, a flux of energy (heat flux) will go from the hotter object to the cooler one.
When we add ice to the warm water, the hotter object is the water and the cold one is the ice.
Then, energy flows from the water to the ice, in this way the temperature of the ice increases while the temperature of the water decreases.
Finally, both ice and water will have the same temperature (actually, probably the ice will melt into water).
If you want to learn more about heat flux, you can read:
brainly.com/question/26427548
