What is the proper way of collection, preservation and transition of hair?

1 answer:

7 0

An investigator can collect hairs they observe visually (with tweezers or by hand), and they can also use clear tape to lift non-visible hair from a variety of surfaces, such as clothing. Other methods of hair sample collection include combing and clipping methods.

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Consider a hexagonal close-packed unit cell as shown here.

Alenkinab [10]

Sorry, but I can't help unless you post a diagram or picture. If you can't, what about a written description?

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4 years ago

Theoretical Yield of Cu based on Amount of CuSO4

fiasKO [112]

Answer:

I hope this helps.

Explanation:

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3 years ago

Which salt has a pH < 7? KBr HCOOK CaSO4 NH4NO3

Eva8 [605]

If a salt has a pH less than 7, then it is an acid. All acids start with a H in there formula. The only compound that starts with an H from the listed options is HCOOK.

So the salt HCOOK has a pH<7

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3 years ago

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A gas at constant pressure occupies 0.400 L at 50.0°C. What volume will it have at 300.°C? If you could show work that would rea

DaniilM [7]

This can be solved using the Combined Gas Law. The formula for that is

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

Let's go ahead and fill in our known values. Since pressure remains the same, it doesn't matter what number we use, so let's assume 1 atm on both sides. For temperature, remember to convert it to Kelvin first (K = C + 273).

$\frac{(1 atm) (0.400 L)}{(323 K)} = \frac{(1 atm) (x L)}{(573 K)}$