Imagine you are a detective examining a crime scene. You are trying to

Chemistry

2 answers:

castortr0y [3K]3 months ago

4 0

Answer:

C. strands of hair discovered at the scene.

Explanation:

By utilizing the strands of hair, you can retrieve the DNA of the individual involved. This will provide a clearer lead in resolving the case.

I hope this information is helpful....

Tems11 [2.7K]3 months ago

3 0

Answer:

C. Strands of hair located at the crime scene.

Explanation:

Strands of hair from the crime scene are highly valuable for identifying the perpetrator, as they allow for the extraction of the criminal's DNA through DNA fingerprinting techniques. The analysis involves looking at the chemical composition of the hair and obtaining DNA from the hair follicle. For DNA extraction, the hair samples need to have an attached follicle. Nuclear DNA can be effectively gathered from the hair's root, whereas hair that’s been cut without the follicle won’t be effective. The DNA can remain viable in hair for about 1,000 to 10,000 years.

You might be interested in

A chamber with a fixed volume is shown above. The temperature of the gas inside the chamber before heating is 25.2 C and it’s pr

KiRa [2933]

Answer:

Explanation:

Given data:

Initial temperature T₁ = 25.2°C = 298.2K

Initial pressure P₁ = 0.6atm

Final temperature = 72.4°C = 345.4K

What we need to find:

Final pressure = ?

To determine this, we apply a modified version of the combined gas law with constant volume. This simplifies our calculations to:

$\frac{P_{1} }{T_{1} } = \frac{P_{2} }{T_{2} }$

Here, P and T signify pressure and temperatures, 1 refers to initial and 2 to final temperatures.

Now we can substitute the known variables:

$\frac{0.6}{298.2} = \frac{P_{2} }{345.4}$

P₂ = 0.7atm

3 0

4 months ago

Given the following equation and heat of reaction: 2 moles of A combine with 2 moles of B to produce 6 moles of C and 26 kJ What

KiRa [2933]

Answer: The change in enthalpy will be -13.

Explanation:-

Endothermic reactions absorb heat, while exothermic reactions release heat. In the case of an endothermic reaction, the change in enthalpy is represented as positive, whereas for an exothermic reaction, it is negative.

$\Delta H$ $\Delta H$