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Naily [24]
2 years ago
7

Raul designs a device to protect a raw egg from cracking when dropped from different heights. He wants his device to be as light

weight as possible while safely from a 3-meter distance. Raul builds a device that has foam and aluminum on the outside and then tests his device. His initial prototype is made of one layer of aluminum foil and a 2 cm thick layer of soft foam.
His hypothesis was: If I throw an egg covered with 2 cm foam and 1 layer of aluminum foil from a three-meter distance, then the egg will not break because energy will be transferred but stopped by these materials.

What conclusion would he get from the experiment? Explain your answer. Was his hypothesis correct or wrong? Explain your answer Explain one way in which Raul can improve the design of his prototype using what you have learned about transferring potential and kinetic energy to conduct another round of tests

Chemistry
1 answer:
Pepsi [2]2 years ago
3 0

Rahul's hypothesis was proved wrong after the experiment.

<h3>What is a hypothesis?</h3>

A research hypothesis is a statement of expectation or prediction that will be tested by research.

According to the experiment table up to 2 m height, the egg is safe, but after at 3 m height, his hypothesis went wrong.

Hence, we can say that without an experiment, a hypothesis can't be proved true.

Learn more about the hypothesis here:

brainly.com/question/17246563

#SPJ1

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disolvemos 25 g de hidroxido de sodio en agua hasta obtener 500 cm3 de disolucion. ¿Cual es la concentracion molar de la disoluc
LiRa [457]

Answer:

M=1.25M

Explanation:

Hola,

Dado que la molaridad de una solución es definida en términos de las moles de soluto y el volumen de la solución en litros:

M=\frac{n}{V}

Primero debemos calcular las moles de hidróxido de sodio, teniendo en cuenta que su masa molar es de 40 g/mol:

n=25gNaOH*\frac{1molNaOH}{40gNaOH}=0.625mol

Luego, el volumen el litros:

V=500cm^3*\frac{1L}{1000cm^3} =0.500L

Así, calculamos la concentración molar de la solución:

M=\frac{0.625mol}{0.500L}\\ \\M=1.25M

Saludos!

3 0
3 years ago
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5 0
3 years ago
what temperature does water freeze using degrees Celsius and what is the basic unit for measuring mass
Olin [163]

Freezing point is the temperature at which a substance undergoes a phase transition from liquid to solid state. Water converts from liquid state to solid ice at a temperature of 0^{0}C.

Mass is the amount of matter contained in a substance. The SI unit of mass is kilogram. 1 kilogram is equal to 1000 g. One kilogram is defined as the mass of one cubic decimeter of water at the freezing point of water.

5 0
4 years ago
The temperature at which a solid melts is not characteristic if a compound nor an element
Assoli18 [71]

Answer:

False

Explanation:

The temperature at which a solid melts, known as its melting point is highly characteristic of a compound and element.

The melting point of pure substances, compounds and elements is definite and not varied.

  • Melting point is an intensive property of matter.
  • It does not depend on the amount of matter present.
  • It is an innate or intrinsic property of every matter.
  • For example, no matter the volume or mass of water, it will always boil at 100°C, all things being equal.

Therefore, melting point of most solids is characteristic of compounds and elements.

8 0
3 years ago
Calculate the equilibrium constant at 298 K for the reaction of formaldehyde (CH2O) with hydrogen gas using the following inform
Mariana [72]

Answer:

E. 8.08 x 10⁴.

Explanation:

Hello,

In this case, for the reaction:

CH_2O(g) + 2H_2(g)  \rightleftharpoons CH_4(g) + H_2O(g)

We can compute the Gibbs free energy of reaction via:

\Delta G\°=\Delta H\°-T\Delta S\°

Since both the entropy and enthalpy of reaction are given at 298 K (standard temperature), therefore:

\Delta G\°=-94.9kJ-(298K)(-224.2\frac{J}{K}*\frac{1kJ}{1000kJ} )\\\\\Delta G\°=-28.1kJ

Then, as the equilibrium constant is computed as:

K=exp(-\frac{\Delta G\°}{RT} )

We obtain:

K=exp(-\frac{-28.1kJ/mol}{8.314x10^{-3}\frac{kJ}{mol* K}}*298K )\\\\K=8.08 x10^4

For which the answer is E. 8.08 x 10⁴.

Best regards,

3 0
4 years ago
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