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Tamiku [17]
3 years ago
11

What is the importance of measuring the age of fingerprints

Chemistry
1 answer:
ivanzaharov [21]3 years ago
8 0

Answer: Measuring the age of fingerprints is important because it can help detectives on a crime.

With fingerprints you can find the criminals record. Which would lead to their eventual arrest and a solved case.

Explanation:

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tankabanditka [31]

Answer:

True

Explanation:

3 0
3 years ago
Consider the data presented below. time (s) 0 40 80 120 160 moles of a 0.100 0.067 0.045 0.030 0.020 part a part complete determ
Whitepunk [10]
To determine which order of the reaction it is, first we need to calculate the rate of change of moles.
the data is as follows 
time         0         40        80       120       160
moles    0.100   0.067  0.045    0.030    0.020


Q1)
for the first 40 s change of moles ;
      = -d[A] / t
      = - (0.067-0.100)/40s
      = 8.25 x 10⁻⁴ mol/s
for the next 40 s
      = -(0.045-0.067)/40
      = 5.5 x 10⁻⁴ mol/s
the 40 s after that
      = -(0.030-0.045)/40 s 
     = 3.75 x 10⁻⁴ mol/s
k - rate constant
and A is the only reactant that affects the rate of the reaction

rate = k [A]ᵇ
8.25 × 10⁻⁴ mol/s = k [0.100 mol]ᵇ ----1
5.5 x 10⁻⁴ mol/s = k [0.067 mol]ᵇ   -----2
divide the 2nd equation by the 1st equation
1.5 = [1.49]ᵇ
b is almost equal to 1
Therefore this is a first order reaction

Q2)
to find out the rate constant(k), we have to first state the equation for a first order reaction.
rate = k[A]ᵇ
As A is the only reactant thats considered for the rate equation. 
Since this is a first order reaction,
b = 1
therefore the reaction is 
rate = k[A]
substituting the values,
8.25 x 10⁻⁴ mol/s = k [0.100 mol]
k = 8.25 x 10⁻⁴ mol/s /0.100mol
   = 8.25 x 10⁻³ s⁻¹

7 0
3 years ago
Which statement best defines the term innate behavior?
Murrr4er [49]

Answer:

The Answer is gonna be behavior that is simple, untaught, and born knowing:3

<em> I hope you are having a great day</em> ❤️

4 0
2 years ago
Read 2 more answers
Please help... ......
viktelen [127]

The liquid particles would have moved randomly because of the increase in thermal energy. They would move randomly and would be floating in the bottle moving randomly. The liquid would turn into gas form. Meaning that you would have water particles floating in the bottle moving randomly.

5 0
3 years ago
Biochemistry The famous Anfinsen protein folding experiment was the first to show that the amino acid sequence of a protein can
OverLord2011 [107]

Answer:

The A option is the correct answer: Non-native disulfide bonds form after beta-mercaptoethanol is removed, so the protein cannot refold correctly

Explanation:

Beta-Mercaptoehanol is responsible to reduce the four disulfide bonds present in ARNase; Urea deals with non covalente bonds.  In presence of both ARNase is denatured.

If Urea is first removed by dialysis, and later is removed Beta-Mercaptoethanol, the enzyme recovers ist activity.

If Beta-Mercaptoethanol is first removed, disulfide bonds different from native use to be formed.  As a result ARNase is not an active enzyme

5 0
2 years ago
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