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GarryVolchara [31]
3 years ago
15

Answer the two questions by using the pictures, thanks!

Chemistry
1 answer:
vladimir2022 [97]3 years ago
7 0

Answer:

  • See descriptions below.

Explanation:

<h2>Part A:</h2>

The football was launched by the girl. This is, the girl applied a <em>force </em>over the football and it started to move.

Newton's second law of<em> motion</em> tell us that the <em>net force </em>on an object is proportional to the product of the the mass of the object and the acceleration it acquires.

Then, the force applied by the girl on the football caused it to accelerate: it passed from rest to have some speed.

The same happens to the baseball lauched by the boy. It accelerated due to the force applied by the boy.

The acceleration of each ball can be calculated using Newton's second law of motion:

       a=\dfrac{Net\text{ }Force}{mass}

Thus, if you assume that both the girl and the boy applied the same force to their respective balls, the baseball, which has less mass, would acquired a greater accelaration than the football.

<h2>Part B.</h2>

After the<em> football</em> and<em> baseball leave the students' hands</em>, the only force acting on them is the force of gravity which is vertically downward.

If there was not gravitational and other forces acting after the sutdents launched the balls, they  would continue to travel in the same direction and with the same speed that it started to move.

Due to the gravitational force, the combination of the initial speed acquired by each ball, by the force applied by each student, and the downward acceleration after the balls left the students' hands make that the motion of the balls be parabolic.

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Here we will use the general formula of Nernst equation:

Ecell = E°Cell - [(RT/nF)] *㏑Q

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E°Cell is standard state cell potential = - 0.87 V

and R is a constant = 8.314 J/mol K

and T is the temperature in Kelvin = 73 + 273 = 346 K

and F is Faraday's constant = 96485 C/mole

and n is the number of moles of electron transferred in the reaction=2  

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so by substitution :

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6 0
3 years ago
The most concentrated solution is
aev [14]
The most concentrated solution is b
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PLEASE ANSWER <br> ARE THESE CORRECTTTTTT
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1. The answer is E.

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if a baloon filled with dry hydrogen weighs 35 gram,but weighs 440 grams when filled with the vapour of an organic compound. cal
Elan Coil [88]

Answer:

1) The vapor density of the organic compound is approximately 12.57

2) The relative molar mass (RMM) of the organic compound is approximately 25.14 grams  

Explanation:

1) The mass of the balloon filled with dry hydrogen = 35 grams

The mass of the balloon filled with vapor of an organic compound = 440 grams

The vapor density = (Weight of a given volume of gas)/(Weight of equal volume of hydrogen)

The vapor density of the organic compound = (440)/(35) ≈ 12.57

The vapor density of the organic compound ≈ 12.57

2) The relative molar mass (RMM) = 2 × vapor density

The relative molar mass (RMM) of the organic compound = 2 × vapor density of the organic compound

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The relative molar mass (RMM) of the organic compound ≈ 25.14 grams  

6 0
3 years ago
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