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Alona [7]
3 years ago
12

You are working a crime scene and discover a weapon. How do you pick up the weapon so you do not disturb

Chemistry
2 answers:
11Alexandr11 [23.1K]3 years ago
3 0

Answer:

you pick it up with gloves and make minimal contact with it

Feliz [49]3 years ago
3 0
You would pick up the weapon with gloves from the bottom, this insures that you have minimal contact with it and not much DNA is wiped off.
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Silver metal can be prepared by reducing its nitrate, AgNO3 with copper according to the following equation:
Lerok [7]

%yield = 88.5%

<h3>Further explanation</h3>

Given

Reaction

Cu(s) + 2 AgNO₃(aq) → Cu(NO₃)₂(aq) + 2Ag(s)

Required

The percent yield

Solution

mol AgNO₃(MW=169,87 g/mol) :

= mass : MW

= 127 : 169.87

= 0.748

mol Ag from equation :

= 2/2 x mol AgNO₃

= 2/2 x 0.748

= 0.748

Mass Ag (theoretical) :

= mol x Ar Ag

= 0.748 x 108

= 80.784

% yield = (actual/theoretical) x 100%

%yield = 71.5/80.784 x 100%

<em>%yield = 88.5%</em>

7 0
2 years ago
What is the formula of nitrous acid?
Charra [1.4K]
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5 0
3 years ago
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Jet001 [13]
Actions form positive ions while anions forms negative
7 0
3 years ago
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I WILL MARK BRAINLIEST How could this sentence be re-written to convey the active voice?
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5 0
2 years ago
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What is the percent of copper in CuS?
bonufazy [111]

Answer:

Element Symbol Mass Percent

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Explanation:

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7 0
2 years ago
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