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timurjin [86]
3 years ago
13

Rusty is a forensic investigator examining the crime scene of a homicide. The medical examiner has determined that the victim di

ed of a gunshot wound. However, there are no bullets or cartridge casings found at the scene. What type of evidence might show striations that might lead to a specific weapon?
Chemistry
1 answer:
boyakko [2]3 years ago
4 0

Answer:

The presence of dust on the victim's right or left hand

Explanation:

The presence of powder, the route of the bullet, and the damage the bullet generates tells us what the caliber of the weapon was like, and type.

The presence of gunpowder in the hand is a consequence of the person being shot, usually in the victim's skilled hand.

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A strong oxidizing agent will donate electrons readily.
alukav5142 [94]
false is the answer to this question.
8 0
3 years ago
Read 2 more answers
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
At − 12.0 ∘ C , a common temperature for household freezers, what is the maximum mass of sorbitol (C6H14O6) you can add to 2.00
allochka39001 [22]

Answer:

2,347.8 grams

Explanation:

The freezing point depression Kf of water = 1.86° C / molal.

 

To still freeze at -12° C, then the molality of the solution 12/ 1.86 = 6.45 moles

 

The molecular weight of sorbitol (C6H14O6)is:

 

6 C = 6 ×12 = 72

14 H = 14 × 1 = 14

6 O = 6 × 16 = 96

...giving a total of 182

 So one mole of sorbitol has a mass of 182 grams.

 

Since there are 2 kg of water,  2 × 6.45 moles = 12.9 moles can be added to the water to get the 12° C freezing point depression. 

Therefore

grams = moles × molar mass

12.9 moles × 182 grams / mole = 2,347.8 grams of sorbitol can be added and still freeze

7 0
4 years ago
If there are two similar,oxygen -containing ions, the ion with more oxygen atoms ends in
Taya2010 [7]
The answer is  -ate:

If there are two similar, oxygen-containing ions, the ion with more oxygen atoms ends in -ate.     
5 0
3 years ago
Read 2 more answers
Write a half-reaction for the oxidation of the manganese in MnCO3(s) to MnO2(s) in neutral groundwater where the carbonate-conta
Leokris [45]

Answer:MnCO3+2H2O----->MnO2+ HCO3-+2e-+3H+

Explanation:The equation to be balanced is

MnCO3 ------> MnO2+HCO3-

The oxidation number of Mn changes from +2 in MnCO3 to +4 in MnO2

Therefore two electrons must be added to the right as shown below:

MnCO3 -------> MnO2+ HCO3-+ 2e-Now,there is one negative charge HCO3- and 1 negative charge on the two electrons making a total of -3 charges on the right. There is zero charge on the left.

To balance the equation,add3H+on the right,to cancel out the charges.

MnCO3 --------> MnO2+HCO3-+2e-+3H+

Adding H2O to balance Hydrogen and Oxygen atoms:

MnCO3+2H2O ------->MnO2+HCO3-+2e-+3H+

3 0
4 years ago
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