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exis [7]
4 years ago
14

Two skydivers jump out of a plane. As the skydivers are in free fall, the potential energy they possessed at the airplane door I

s being converted to kinetic energy
True
False
Chemistry
2 answers:
LiRa [457]4 years ago
7 0
That is true, the potential energy they possessed at the airplane door would be converted to kinetic energy. And if they driver is high up, he has further to fall. As the skydivers jump, the energy would be converted to kinetic energy.
ki77a [65]4 years ago
4 0
The answer is true because they had potential to do energy inside the plane and when they jumped which is free fall all that Potential energy switched to Kinetic Energy which is energy of Motion .
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What is Tyndall effect? Describe an activity to show that a true solution does not show Tyndall effect
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Answer:

The Tyndall effect is the scattering of light as a light beam passes through a colloid. The individual suspension particles scatter and reflect light, making the beam visible. The amount of scattering depends on the frequency of the light and density of the particles

Explanation:

And an activity to see if the solution doesn't show the tyndall effect is to try to shine a flaslight through it and see if you can see it coming out the other end

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Which of the following does NOT correctly describe the kinetic molecular theory? Collisions between gas particles are inelastic.
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A 0.539 g sample of a metal, M, reacts completely with sulfuric acid according to the reaction M(s)+H2SO4(aq)⟶MSO4(aq)+H2(g) A v
Charra [1.4K]

Answer:

The molar mass of the metal is 54.9 g/mol.

Explanation:

When we work with gases collected over water, the total pressure (atmospheric pressure) is equal to the sum of the vapor pressure of water and the pressure of the gas.

Patm = Pwater + PH₂

PH₂ = Patm - Pwater = 1.0079 bar - 0.03167 bar = 0.9762 bar

The pressure of H₂ is:

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We can calculate the moles of H₂ using the ideal gas equation.

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Let's consider the following balanced equation.

M(s) + H₂SO₄(aq) ⟶ MSO₄(aq) + H₂(g)

The molar ratio of M:H₂ is 1:1. So, 9.81  × 10⁻³ moles of M reacted. The molar mass of the metal is:

\frac{0.539g}{9.81 \times 10^{-3} mol} =54.9g/mol

4 0
4 years ago
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