All categories

3 years ago

what type of recording do you think would be the best method of submitting evidence to a crime lab? why?

Chemistry

2 answers:

Blababa [14]3 years ago

6 0

Answer:

The type of recording that is the best and most useful method of submitting evidence to a crime lab is by videography.

The videography is the type of evidence that pretty much contains everything that can be get from a recording because it has both the visual aspects and the audio aspects of the crime scene. It can be said that the videography represents the ultimate type of notes.

Explanation:

Margaret [11]3 years ago

4 0

The type of recording that is the best and most useful method of submitting evidence to a crime lab is by videography.

You might be interested in

3. A PS6 plugged into a 120 V outlet uses 3 Amps. What is the Resistance rating of

blondinia [14]

Answer:

R = 40 ohms

Explanation:

Given that,

The voltage of outlet, V = 120 V

Current flowing through the device, I = 3 A

We need to find the Resistance rating of the power cord. Let the resistance is R. We know that,

Ohm's law, V = IR

Put all the values,

$R=\dfrac{V}{I}\\\\R=\dfrac{120}{3}\\\\R=40\ \Omega$

So, the resistance rating of the power cord is equal to 40 ohms.

8 0

3 years ago

A change in the force of gravity on an object will affect its what

Gnoma [55]

A change in the force of gravity on an object will affect its weight.

4 0

3 years ago

To make a 0.500 M solution, one could take 0.500 moles of solute and add Group of answer choices enough solvent to make 1.00 kg

Fiesta28 [93]

Answer: The correct option is enough solvent to make 1.00 L of solution

Explanation:

A solution consists of solute and solvent. A solute is defined as the component present in a smaller proportion while the solvent is defined as the component that is present in a larger proportion.

Molarity is defined as the amount of solute expressed in the number of moles present per liter of solution. The units of molarity are mol/L. The formula used to calculate molarity:

$Molarity=\frac{Moles}{Volume}$ .......(1)

We are given:

Molarity of solution = 0.500 M

Moles of solute = 0.500 moles

Putting values in equation 1, we get:

$0.500mol/L=\frac{0.500mol}{\text{Volume of solution}}\\\\\text{Volume of solution}=\frac{0.500mol}{0.500mol/L}=1.00L$

Hence, the correct option is enough solvent to make 1.00 L of solution

5 0

3 years ago

Before the Internet, it was easier for small businesses to do business on a global scale. Choose the answer.

Umnica [9.8K]

I think it’s false ......

8 0

3 years ago

Read 2 more answers

Why do soluble salts have to be made by titration, using an indicator?

Radda [10]

This technique can be used to make pure crystals of a soluble salt.
The burette is filled with hydrochloric acid.
A known quantity of alkali (say 50 cm3 sodium hydroxide)
is released from a pipette into the conical flask.
The tap on the burette is turned open to allow
the acid to be added drop by drop into the alkali.
The alkali contains an indicator (phenolphthalein)
which is pink in an alkali and colorless in an acid.

When enough acid has been added to neutralize
the alkali, the indicator changes from
pink to colorless. This is the end point of the titration.

The titration can be repeated using the same amounts
of acid and alkali but without the indicator.
Pure salt crystals which are free from indicator
can then be crystallized from the neutral solution.

7 0

4 years ago