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Flauer [41]
3 years ago
5

Watson and Crick worked out the structure of DNA molecules in 1952. This discovery affected the legal system that is used in soc

iety by changing how criminal trials are conducted. Which of these would most likely happen thanks to the understanding of DNA structure?
A. John Doe is convicted of speeding based on DNA evidence from police radar.

B. John Doe is convicted of murder based on DNA evidence found at the crime scene.

C. John Doe is convicted of bank robbery based on DNA evidence from dye on the money.

D. John Doe is convicted of shoplifting based on DNA evidence from a department store camera.
Chemistry
2 answers:
tangare [24]3 years ago
8 0

Vesalius is the answer

alexandr1967 [171]3 years ago
5 0
B. john doe is convicted of murder based on DNA evidence fond at the crime scene

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Answer: Europe

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A metallurgical firm wishes to dispose of 1200 gallons of waste sulfuric acid whose molarity is 1.05 M. Before disposal, it will
Reil [10]

Answer:

The balanced chemical equation for this process:

H_2SO_4(aq)+Ca(OH)_2(s)\rightarrow 2H_2O(l)+CaSO_4(aq)

$194.51 is the cost that the firm will incur from this use of slaked lime.

Explanation:

The balanced chemical equation for this process

H_2SO_4(aq)+Ca(OH)_2(s)\rightarrow 2H_2O(l)+CaSO_4(aq)

Moles of sulfuric acid = n

Volume of sulfuric acid disposed = V = 1200 gallons = 3.785 × 1200 L = 4,542 L

1 gallon = 3.785 Liter

Morality of the sulfuric acid = M = 1.05 m

Molarity(M)=\frac{n}{V(L)}

n=m\times V=1.05 M\times 4,542 L=4,769.1 mol

According to reaction, 1 mol of sulfuric acid reacts with 1 mole of calcium hydroxide.Then 4,769.1 moles of sulfuric acid will recat with ;

\frac{1}{1}\times 4,769.1 mol=4,769.1 mol of calcium hydroxide

Mass of 4,769.1 moles of calcium hydroxide:

4,769.1 mol  74 g/mol = 352,913.4 g

= \frac{352,913.4 }{453.6} pounds =778.03 pounds

(1 pound = 453.6 grams)

Cost of 1 pound of slaked lime  = $0.25

Cost of 778.03 pounds of slaked lime  = $0.25 × 778.03 = $194.51

$194.51 is the cost that the firm will incur from this use of slaked lime.

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