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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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Answer:

Fluorine

Explanation:

It is a non-metal does not conduct electricity

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What volume of an hcl solution with a ph of 1.3 can be neutralized by one dose of milk of magnesia?
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274 mL H3 O+ and fully neutralized

It will take one teaspoon of Mg(OH)2 to completely neutralize 2.00×10^2mL  of H3O+.

<h3>What is the purpose of milk of magnesia?</h3>
  • For a brief period of time, this medicine is used to relieve sporadic constipation.
  • It is an osmotic laxative, which means that it works by drawing water into the intestines, which aids in causing bowel movement.
<h3>What dosage of milk of magnesia is recommended for constipation?</h3>
  • Take Milk of Magnesia once day, preferably before bed, in divided doses, or as prescribed by a physician.
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learn more about milk of magnesia here

brainly.com/question/15178597

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the question you are looking for is

People often take milk of magnesia to reduce the discomfort associated with acid stomach or heartburn. The recommended dose is 1 teaspoon, which contains 4.00x 10^{2} mg of Mg(OH)_2. What volume of an HCl solution with a pH of 1.3 can be neutralized by one dose of milk of magnesia? If the stomach contains 2.00x10^{2}mL of pH 1.3 solution, is all the acid neutralized? If not, what fraction is neutralized?

7 0
1 year ago
A 100.0-mL sample of 1.00 M NaOH is mixed with 50.0 mL of 1.00 M H2SO4 in a large Styrofoam coffee cup calorimeter fitted with a
worty [1.4K]

Answer:

THE ENTHALPY CHANGE IN KJ/MOLE IS +114 KJ/MOLE.

Explanation:

Heat = mass * specific heat capacity * temperature rise

Total volume = 100 + 50 = 150 mL

Total mass = density * volume

Total mass = 1 * 150 mL = 150 g

So therefore, the heat evolved during the reaction is:

Heat = 150 * 4.18 * ( 31.4 - 22.3)

Heat = 150 * 4.18 * 9.1

Heat = 5705.7 J

Equation for the reaction:

2 NaOH(aq) + H2SO4(aq) → Na2SO4(aq) + 2 H2O(l)  

From the equation, 2 moles of NaOH reacts with 1 mole of H2SO4 to produce 1 mole of Na2SO4 and 2 moles of water

50 mL of 1 M of H2SO4 contains

50 * 1 / 1000 mole of acid

= 0.05 mole of acid

The production of 1 mole of water evolved 5705.7 J of heat and hence the enthalpy changein kJ per mole will be:

0.05 mole of H2SO4 produces 5705.7 J of heat

1 mole of H2SO4 will produce 5705.7 / 0.05 J

= 114,114 J / mole

In kj/mole = 114 kJ/mole.

Hence, the enthalpy change of the reaction in kJ /mole is +114 kJ/mole.

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The answer is D hope this helps
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