A flask that weighs 450 g is filled with 145 ml of benzene. The weight of the flask and benzene is found to be 754 g. From this information, calculate the density of the benzene.
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Ответ:
Density,![d=2.09\ g/cm^3](/tpl/images/0880/1992/5847b.png)
Explanation:
Given that,
Mass of a flask is 450 g
Volume of benzene added to the flask is 145 mL or 145 cm³
The weight of the flask and benzene is found to be 754 g.
We need to find the density of the benzene.
Weight of benzene added = total weight of flask and benzene-mass of flask
m = 754 g - 450 g
m = 304 g
Density = mass/volume
So,
So, the density of the benzene is
.
Ответ:
-Kings raised money by collecting taxes and then spent the money to improve the city.
-The use of agriculture and irrigation resulted in a surplus of food.
-City-states traded with each other for the things they needed.
Hope this helps!
Explanation: