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vazorg [7]
3 years ago
5

There are two suspects in a shooting investigation. Bullets are recovered from the crime scene. Both suspects own guns, and thes

e guns have been seized by the police. How will the investigators check to see if one of these guns fired the found bullets?
Chemistry
1 answer:
Gwar [14]3 years ago
7 0

Answer:

They can check if one of the bullets is gone if the gun was fully loaded or they can see if there is any particles of gun powder on the gun. I may be wrong.

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Calculate the % dissociation of 0.10 M solution of acetic acid (pKa = 4.75)
madreJ [45]

Given :

Molarity of acetic acid solution, M = 0.10 M.

pKa of acetic acid, pKa = 4.75 .

To Find :

Percentage dissociation of 0.10 M solution of acetic acid.

Solution :

We know, pK_a = -log\  K_a

Taking antilog both side, we get :

K_a = 1.78\times 10^{-5}

Since, acetic acid has 1 hydrogen atom to loose , so it is a monoprotic acid.

Now, percentage dissociation of monoprotic acid is given by :

\alpha = \sqrt{\dfrac{K_a}{C}}\\\\\alpha =\sqrt{ \dfrac{1.78\times 10^{-5}}{0.1}}\\\\\alpha =  0.0133\times 100 = 1.33 \%

Hence, this is the required solution.

3 0
3 years ago
True or False: Adding 4.18 joules to water will increase the temperature more than adding 1 calorie to water.
mote1985 [20]

Answer:

Because one calorie is equal to 4.18 J, it takes 4.18 J to raise the temperature of one gram of water by 1°C. In joules, water's specific heat is 4.18 J per gram per °C. If you look at the specific heat graph shown below, you will see that 4.18 is an unusually large value.

6 0
3 years ago
A pure substance composed of two or more different elements is aln)
kenny6666 [7]

Answer:

c

Explanation:

that is my dads answer

8 0
3 years ago
How does thermal energy flow between a hot or cold pack and the atmosphere?
barxatty [35]

Answer:

Heat is the transfer of energy. During energy transfer, the energy moves from the hotter object to the colder object. This means that the hotter object will cool down and the colder object will warm up. The energy transfer will continue until both objects are at the same temperature.

Explanation:

7 0
3 years ago
34.1 mg NaCl in 117.3 mL of solution
Solnce55 [7]

The molarity of the solution will be 4.97 M.

<h3>What is molarity?</h3>

It is the number of moles of solutes per 1 liter of solvent or solution.

Mole of 34.1 g NaCl = 34.1/58.44 = 0.5835 mol

117.3 mL = 117.3/1000 = 0.1173 L

Molarity of the solution = 0.5835/0.1173 = 4.97 M

More on molarity can be found here: brainly.com/question/2817451

#SPJ1

6 0
2 years ago
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