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zimovet [89]
3 years ago
12

Which statement best defines a universal law

Chemistry
1 answer:
zvonat [6]3 years ago
5 0
<span>The law of attraction in physics Newton's gravitational pull means to lie close to each other. In the field of physics of each object with mass m1 always have attractive forces with another object (with mass m2). For example, a particle with other particles will always mutual attraction. <span>Examples put forward by Sir Isaac Newton in the field of classical mechanics that anything on the atmosphere will be pulled by the earth, which was then known as the phenomenon of falling objects.

</span><span>Attractive force of gravity is expressed by Isaac Newton via Writing in the journal Philosophiæ Naturalis Principia Mathematica on July 5, 1687 in the form of the following formula:

    </span><span>F = G \ frac {M_1 m_2} {r ^ 2},

</span><span>Where:

    </span><span>F is the force of gravity between the two masses,
    </span><span>G is the gravitational konstante,
    </span><span>m1 is the mass of the first object
    </span><span>m2 is the mass of the object, and
    </span><span>r is the distance between the two masses.

</span>This theory is then developed further that any celestial body will be mutual attraction, and this could explain why the earth should revolve around the sun to offset the attractive force of gravity of the earth-sun. <span>By using the gravitational pull of this phenomenon as well, meteors closer to the Earth in its journey in space will be attracted fall to earth.</span></span>
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A 240.0 gram piece of copper is dropped into 400.0 grams of water at 24.0 °C. If the final temperature of water is 42.0 °C, what
ludmilkaskok [199]

The initial temperature of the copper piece if a 240.0 gram piece of copper is dropped into 400.0 grams of water at 24.0 °C is 345.5°C

<h3>How to calculate temperature?</h3>

The initial temperature of the copper metal can be calculated using the following formula on calorimetry:

Q = mc∆T

mc∆T (water) = - mc∆T (metal)

Where;

  • m = mass
  • c = specific heat capacity
  • ∆T = change in temperature

According to this question, a 240.0 gram piece of copper is dropped into 400.0 grams of water at 24.0 °C. If the final temperature of water is 42.0 °C, the initial temperature of the copper is as follows:

400 × 4.18 × (42°C - 24°C) = 240 × 0.39 × (T - 24°C)

30,096 = 93.6T - 2246.4

93.6T = 32342.4

T = 345.5°C

Therefore, the initial temperature of the copper piece if a 240.0 gram piece of copper is dropped into 400.0 grams of water at 24.0 °C is 345.5°C.

Learn more about temperature at: brainly.com/question/15267055

8 0
2 years ago
Ba(OH)2:_______.
vova2212 [387]

Answer: D

Explanation: Expand this (OH)2 you will get 2O, 2H

Hence 1Ba, 2O, 2H

5 0
3 years ago
The ideal gas constant is..?
Mice21 [21]

Answer:

hope it is use full to you

Explanation:

The gas constant is denoted by the symbol R or R. It is equivalent to the Boltzmann constant, but expressed in units of energy per temperature increment per mole, i.e. the pressure–volume product, rather than energy per temperature increment per particle.

it is a physical constant that is featured in many fundamental equations in the physical sciences, such as the ideal gas law, the Arrhenius equation, and the Nernst equation.  As a consequence, the value of the gas constant is also exactly defined.

5 0
3 years ago
Driving water out of crystals. Which piece of equipment are you likely to use. Crucible Erlenmeyer flask evaporating dish
lora16 [44]

Driving water out of crystals are crystallization process.

The piece of equipment used are evaporating dish.

Explanation:

Crystallization process

  • Crystallization is a process of converting crystalline solid state into liquid state.
  • It works both in purification and separation step.
  • Steps involved in the crystallization process are  

        a) Nucleation

        b) Crystal growth

  • It is the oldest unit operation methods.
  • Methods involved in this process are solvent evaporation, slow cooling, solvent diffusion and sublimation.

Evaporating dish

  • Evaporating dish is a shallow open container.
  • Evaporating dish is used to heat and evaporate solids.
  • It is made by borosilicate glass or porcelain, which is non-reactive and withstand heat from Bunsen burner.  

8 0
3 years ago
A student develops the list shown below that includes laboratory equipment and materials for constructing a voltaic cell.
PSYCHO15rus [73]
Well this answer is not true and is false
3 0
4 years ago
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