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Flauer [41]
3 years ago
5

Watson and Crick worked out the structure of DNA molecules in 1952. This discovery affected the legal system that is used in soc

iety by changing how criminal trials are conducted. Which of these would most likely happen thanks to the understanding of DNA structure?
A. John Doe is convicted of speeding based on DNA evidence from police radar.

B. John Doe is convicted of murder based on DNA evidence found at the crime scene.

C. John Doe is convicted of bank robbery based on DNA evidence from dye on the money.

D. John Doe is convicted of shoplifting based on DNA evidence from a department store camera.
Chemistry
2 answers:
tangare [24]3 years ago
8 0

Vesalius is the answer

alexandr1967 [171]3 years ago
5 0
B. john doe is convicted of murder based on DNA evidence fond at the crime scene

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Becky leaves home and rides a distance of 30 km. it took her 2.5 hours. what is her speed
Charra [1.4K]
Becky's speed is her distance travelled which is 30 km divided by her time travelled of 2.5 hours which gives her average speed of 12 km/hour which is a quite good speed if she was say riding a bicycle and which would give her a good aerobic workout. 
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Air is made up of different gases, such as oxygen, nitrogen, and carbon dioxide.
marysya [2.9K]

Answer:

option A

Explanation:

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2 years ago
During the process of heat transfer, the heat transferred to or from a system's surroundings is always?
OleMash [197]

Answer:

During the process of heat transfer, the heat transferred to or from a system's surroundings is always equal in magnitude to the heat transferred to or from the system, but opposite in sign.

<h2>What is the 1st law of thermodynamics?</h2>

The total energy of an isolated system is said to stay constant according to the first rule of thermodynamics. Energy cannot be generated or destroyed, but it may be transformed from one form into another inside a closed system, which is known as the conservation of energy.

This rule states that when a system is exposed to a certain amount of heat, the amount of heat that the system absorbs is equal to the product of the increase in internal energy (change in internal energy) of the system and the external work that the system does. The relationship between a system's internal energy and work output and the heat given to it is demonstrated by the first law of thermodynamics. This equation provides the foundation for the majority of practical innovations like heat engines, freezers, and air conditioners.

The equation for the first law of thermodynamics is given as; ΔU = q + W

Where,

  • ΔU = change in internal energy of the system.
  • q = algebraic sum of heat transfer between system and surroundings.
  • W = work interaction of the system with its surroundings.

The heat transported to or from a system's surroundings during the process of heat transfer is always opposite in sign, but equal in size, to the heat transferred to or from the system.

What is heat transfer?

       The flow of thermal energy between physical systems is known as heat transfer. The temperatures of the systems and the characteristics of the medium used to transmit the heat affect how quickly it transfers. Conduction, convection, and radiation are the three basic ways that heat is transferred. It is crucial to employ heat transfer, or the movement of energy in the form of heat, in applications of the First Law of Thermodynamics since it is a mechanism through which a system changes its internal energy. Diffusion and conduction are two different concepts. Diffusion linked to fluid mixing is not the same as conduction.

    The Second Law of Thermodynamics controls the direction of heat transmission, which is from one area of high temperature to another area of lower temperature. The internal energy of the systems from and to which the energy is transmitted is altered during heat transfer. Heat transfer will take place in a way that makes the group of systems' entropy higher.

   In physics, heat is described as the flow of thermal energy over a boundary that is clearly defined surrounding a thermodynamic system. The amount of work that a thermodynamic system may accomplish is known as the thermodynamic free energy. Enthalpy is a thermodynamic potential with the letter "H" that is made up of the system's internal energy (U) plus the volumetric product of pressure (P) and temperature (T) (V). A joule is a unit used to measure energy, effort, or heat production.

  The quantity of heat transmitted in a thermodynamic process that modifies a system's state relies on how that process happens, not just the net difference between the process' beginning and ending states, since heat transfer is a process function (or route function), as opposed to a function of state.

 The heat transfer coefficient, which represents the relationship between the heat flux and the thermodynamic force that drives the flow of heat, is used to determine both thermodynamic and mechanical heat transfer. A quantitative, vectorial description of the movement of heat through a surface is called a heat flux.

     The term "heat" is sometimes used interchangeably with "thermal energy" in technical applications. This usage derives from the historical understanding of heat as a fluid (caloric) that may be transported by a variety of reasons, which is also prevalent in laypeople's language and daily life.

Thank you,

Eddie

8 0
1 year ago
Well can someone help me
NNADVOKAT [17]
Chlorophyll is an example of a pigment.
5 0
2 years ago
Write balanced chemical equation for the oxidation of fe2+(aq) by s2o2−6 (aq).
Iteru [2.4K]
To write a balanced chemical equation for the given redox reaction, we need to know the half reactions of the substances involved. Redox reaction means oxidation-reduction reaction. Oxidation is when one loses electrons making it more positive while reduction is gaining electrons which makes it more negative. Iron here is being oxidized and will have the half reaction:

<span>Fe2+(aq) ---> Fe3+(aq) + e+
</span>
<span> S2O2−6 is being reduced in the process and will have a half reaction of:

</span>S2O2-6 + 4H+ + 2e- ----> <span>2H2SO3
</span>
Adding the two half reactions would yield to the balanced chemical equation. We do as follows:


2 (Fe2+ ---> Fe3+ + e+)
S2O2-6 + 4H+ + 2e- ----> 2H2SO3
----------------------------------------------------------------
2Fe2+ + S2O2-6 + 4H+  ----> 2Fe3+ + 2H2SO3  ( balanced oxidation - reduction reaction )
6 0
3 years ago
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