What is TRUE about the majority of explosives that forensic scientists deal with in investigations?
А.
They are made of dynamite and TNT.
B.
They are Molotov cocktails.
C. They use high explosives.
D.
They are homemade bombs.

Answers

Answer 1

Answer:D

Explanation:

Answer 2

The majority of explosives that forensic scientists deal with in investigations are homemade bombs. Therefore, option D is correct.

What are forensic scientist ?

In general, forensic scientists do the following kinds of work: They examine tangible materials gathered from crime sites. They offer forensic expert testimony both before and during court proceedings. Blood, hair, and other trace evidence are gathered by investigators and sent to crime labs for analysis.

Criminalists or crime scene investigators are generalist forensic science technicians that gather evidence at the scene of a crime and conduct scientific and technical examination in labs or offices.

A forensic scientist's key responsibilities include gathering evidence at the crime scene, documenting the findings in reports, processing the evidence at the lab, and giving testimony in court.

Thus, option D is correct.

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Related Questions

A chemist makes 380. mL of magnesium fluoride (MgF2) working solution by adding distilled water to 20.0 mL of a 18.8 L stock solution of magnesium fluoride in water.

Calculate the concentration of the chemist's working solution.

Round your answer to 3 significant digits

Answers

Answer:

0.99 μmol/L

Explanation:

From the question given above, the following data were obtained:

Volume of stock solution (V₁) = 20 mL

Concentration of stock solution (C₁) = 18.8 μmol/L

Volume of diluted solution (V₂) = 380 mL

Concentration of diluted solution (C₂) =?

The concentration of the diluted solution can be obtained as follow:

C₁V₁ = C₂V₂

18.8 × 20 = C₂ × 380

376 = C₂ × 380

Divide both side by 380

C₂ = 376 / 380

C₂ = 0.99 μmol/L

Therefore, the concentration of the diluted solution the chemist is working on is 0.99 μmol/L

What is the reaction of Dimethylamamine + acetic acid

Answers

DMA is prepared commercially by the reaction of dimethylamine with acetic anhydride or acetic acid. Dehydration of the salt of dimethylamine and acetic acid also furnishes this compound: CH3CO2H·HN(CH3)2 → H2O + CH3CON(CH3) Dimethylacetamide can also be produced by the reaction of dimethylamine with methyl acetate.

Although the Devil's Finger Fungus looks much like a plant, it is classified
in the kingdom Fungi. Which is a characteristic of fungi that is not found
in organisms of the plant kingdom?
Select one:
О
Their cells have a nucleus
O
They are heterotrophic
O
Their cells have cell walls
о
The are multicellular

Answers

Answer:

O the multicellular

Explanation:

sana nakatulong

Given all properties are present in both plant kingdom as well as on fungi kingdom species.

What are cells?

Cells are the functional and fundamental unit of any organism which may be they are from plants and animals.

In the fungi kingdom and plant kingdom, both species will have nucleus in their cells and they also have multi cells in their structure only except yeast and it belongs from fungi family. Cell are covered by the cell walls and they both are heterotrophic in nature.

Hence given all properties are present in both species.

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3. If you wish to make 500.0 mL of 0.150 M HCl solution from 6.00 M HCl stock solution, what volume of the stock would you need?


4) if 50.00 mL of 0.300 M AgNO3 are diluted to 250.0 mL, what is the concentration of the new solution?​

Answers

Answer:

3. 12.5 mL

4. 0.06 M

Explanation:

3. Determination of the volume of stock solution.

Volume of diluted solution (V₂) = 500 mL

Molarity of diluted solution (M₂) = 0.150 M

Molarity of stock solution (M₁) = 6 M

Volume of stock solution needed (V₁) =?

M₁V₁ = M₂V₂

6 × V₁ = 0.150 × 500

6 × V₁ = 75

Divide both side by 6

V₁ = 75 / 6

V₁ = 12.5 mL

Thus, the volume of the stock solution needed is 12.5 mL

4. Determination of the molarity of the diluted solution.

Volume of stock solution (V₁) = 50 mL

Molarity of stock solution (M₁) = 0.3 M

Volume of diluted solution (V₂) = 250 mL

Molarity of diluted solution (M₂) =?

M₁V₁ = M₂V₂

0.3 × 50 = M₂ × 250

15 = M₂ × 250

Divide both side by 250

M₂ = 15 / 250

M₂ = 0.06 M

Thus, the concentration of the diluted solution is 0.06 M

A beaker contains 0.125 L of a 3.00 M solution. If the volume goes up to 0.325 L, what is the new molarity?

Answers

Answer:

1.15 M

Explanation:

Step 1: Given data

Initial volume (V₁): 0.125 LInitial concentration (C₁): 3.00 MFinal volume (V₂): 0.325 LFinal concentration (C₂): ?

Step 2: Calculate the final concentration of the solution

We want to prepare a dilute solution from a concentrated one by adding water. We can calculate the concentration of the dilute solution using the dilution rule.

C₁ × V₁ = C₂ × V₂

C₂ = C₁ × V₁/V₂

C₂ = 3.00 M × 0.125 L/0.325 L = 1.15 M

Please help !!! (no links or ill report)

there is a large range of rock ages in the ocean floor due to seafloor spreading, where are the youngest rocks found?

A ) Underneath the continental plate.
B ) Far from the plate boundary/ridge
C ) On the plate boundary/ridge
D ) In the subducton zone

Answers

C. You get rocks are found on the sea floor near the mid-ocean ridges

Due today! Why is it a good idea to have floating cities?

A: We are running out of land
B: We need it for pollution cleanup
C: Oceans are rising
D: It's a sustainable way to live

Answers

Answer:

in my opinion I think the answer the be "A"

The answer is C because due to their buoyant design, floating cities would provide safe, climate-resilient housing for flood-stricken communities. Additionally, the positioning of the platforms in a floating city could cast shadows on the surface of the water, helping to lower ocean temperatures that have risen as a result of climate change.
I hope this helps !!

what is the formula for tin(III) sulfate​

Answers

Answer:

SnSO₄

Explanation:

Tin(II) sulfate is a chemical compound. It is a white solid that can absorb enough moisture from the air to become fully dissolved, forming an aqueous solution; this property is known as deliquescence.

Answer:

please give me brainlist and follow

Explanation:

SnSO₄

(a) Using the expression Ka=[H+][A−][HA] , explain how to determine which solution has the lower pH , 0.10MHF(aq) or 0.10MHC2H3O2(aq) . Do not perform any numerical calculations.

Answers

Answer:

Ka=[H+][A−]/[HA]

which solution has the lower pH, 0.10MHF(aq) or 0.10MHC2H3O2(aq) :

Higher value of Ka indicates greater ionization thus more protons in solution, higher H+ concentration in solution means lower pH value.

Since HF have higher Ka have, thus HF solution will have lower pH.

The measurement is when the solution has the lower pH so HF should have higher ka.

Measurement when the solution has the lower pH?

In the given solution, it contains the  lower pH, 0.10MHF(aq) or 0.10MHC2H3O2(aq).

Here higher value of Ka represents the high ionization so there should be more protons in the solutions. and, the higher h+ concentration have the lower pH value.

So in the case when HF has higher Ka, due to this, HF solution will have lower pH.

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please help illl mark brainlst (no links)

seafloor spreading allows the new formation of rock by:

A ) New rocks floating to the surface of the crust.
B ) The oceanic plates hit each other causing new rocks to fall off.
C ) Magma cooling on the crust.
D ) Seafloor spreading does not create new rocks.

Answers

Answer:

A ) New rocks floating to the surface of the crust.

TRUST

How many moles is 30 grams of CO2?​

Answers

Answer:

68

Explanation:

The table shows characteristics of two plants, Plant A and Plant B.

Answers

Answer:

Plant A

Explanation:

Identify the correct equilibrium constant expression
for this equation:
C6H1206(s) + 60,(g) <—>6C02(g)+ 6H2O(g)

Answers

Answer: Keq= [CO2]^6[H2O]^6/ [O2]^6

Explanation:

The correct equilibrium constant expression for this equation C6H1206(s) + 60,(g) <—>6C02(g)+ 6H2O(g) will be

keq = 6[co2] 6[h2o] / [c6h1206] 6[o].

What is the equilibrium constant?

All reactions tend towards the state of chemical equilibrium. It is the point at which both the forward process and the reverse process are taking place at the same rate.

Since the forward and reverse rates are equal, hence the concentrations of the reactants and products will be constant at the equilibrium state. Here, it is important to remember that even though the concentrations are constant at equilibrium.

The double half-arrow sign we use for writing the reversible reaction equations. It is represented as a sign of equilibrium.

therefore, the correct equilibrium constant expression will be C6H1206(s) + 60,(g) <—>6C02(g)+ 6H2O(g)

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I NEED HELP WITH THIS ASAPP

Answers

the answer is stationary bc between those two times the car is not moving as seen by the flat line

If the number of moles of a gas doubles, its volume will also double
according to
*
Please hurry! What is the answer to this?

Answers

Explanation:

Boyle's Law

When iron nail is ground into powder, it’s mass

Answers

Answer:

(a) The mass of an object remains the same always. It is independent of its location. In this case, an iron nail is ground into powder.

Explanation:

please mark this answer as brainliest

what is the mass of 1.5 x 10^21 silicon atoms?







Answers

Answer:

0. 070g

Mass of 1 Si atom =28.08/6.022*1023

So mass 1.5 *1021*4.6629*10-23

Answer:

[tex]\boxed {\boxed {\sf 0.070 \ g \ Si}}[/tex]

Explanation:

We are given a value of atoms and asked to find the mass. We can complete this in 2 steps.

1. Convert Atoms to Moles

First, we have to convert atoms to moles. We use Avogadro's Number or 6.022 × 10²³. This is the number of particles (atoms, molecules, formula units, etc.) in 1 mole of a substance.

In this case, the particles are silicon atoms. We can set up a proportion.

[tex]\frac { 6.022 \times 10^{23} \ atom \ Si }{1 \ mol \ Si}[/tex]

Multiply by the value of atoms given.

[tex]1.5 \times 10^{21} \ atom \ Si *\frac { 6.022 \times 10^{23} \ atom \ Si }{1 \ mol \ Si}[/tex]

Flip the ratio. This allows the atoms of silicon units to cancel and leave the moles of silicon.

[tex]1.5 \times 10^{21} \ atom \ Si *\frac {1 \ mol \ Si } {6.022 \times 10^{23} \ atom \ Si}[/tex]

[tex]1.5 \times 10^{21}*\frac {1 \ mol \ Si } {6.022 \times 10^{23} }[/tex]

[tex]\frac {1.5 \times 10^{21} \ mol \ Si } {6.022 \times 10^{23} }[/tex]

[tex]0.002490866822 \ mol \ Si[/tex]

2. Convert Moles to Grams

Next, we convert the moles to grams. We use the molar mass, which is found on the Periodic Table. This value is the number of grams in 1 mole of a substance. Look for silicon (Si).

Si: 28.085 g/mol

Use this value as a ratio.

[tex]\frac {28.085 \ g \ Si}{1 \ mol \ Si}[/tex]

Multiply by the number of moles we calculated.

[tex]0.002490866822 \ mol \ Si *\frac {28.085 \ g \ Si}{1 \ mol \ Si}[/tex]

The moles of silicon units cancel, so we are left with grams.

[tex]0.002490866822 *\frac {28.085 \ g \ Si}{1}[/tex]

[tex]0.002490866822 *{28.085 \ g \ Si}[/tex]

[tex]0.06995599469 \ g \ Si[/tex]

3. Round

Finally we must round our answer. The original value has 2 significant figures, so our answer must have the same. For the number we calculated, that is the thousandth place.

[tex]0.069\underline95599469 \ g Si[/tex]

The 9 tells us to round the other 9 to a 0, then the 6 to a 7.

[tex]0.070 \ g \ Si[/tex]

The mass of 1.5 × 10²¹ silicon atoms is 0.070 grams of silicon.

A group of students working in a high school chemistry lab believe they have discovered a new element! How exciting! Upon further testing by scientists (with better equipment), it is found that the new element contains 74 protons and 110 neutrons.

Answers

Pretty sure it’s tungsten , the atomic number is 74

b) A piece of solid gold was heated from 274K to 314K using 55.7J of energy to raise the
temperature. What mass of gold was present?​

Answers

Answer:

Explanation:

So we know q = mc[tex]\Delta[/tex]T.

q = 55.7 J

c = 0.129j/g°C

and [tex]\Delta[/tex]T = 314-274 = 40°C.

and m is mass which can solve since we got every other variable. We will get m = 10.8g.

Classify the following as a chemical or
physical property:
Sodium metal boils at
883 degrees C.
A.chemical
B.physical

Answers

Boiling point is a physical property. So, the answer here would be B.

Opinión personal sobre El Planeta

Answers

la tierra nuestro planeta es el único del sistema solar que sabe que mantiene vida: vida que es increíblemente diversa,

temperature usually increase when water condenses which behavior of water is most directly responsible for this phenomenon?

Answers

Answer:

Temperature usually increases when water condenses. What behavior of water is most directly responsible for this phenomenon? The release of heat by the formation of hydrogen bonds. Hydrogen bonds stabilize and keep the of ice farther apart than the water molecules of liquid water.


Cacti and succulents are better adapted
for surviving in the desert than oak
trees because cacti
A. allow more sunlight to reach the soil
B. prevent the plant from producing
flowers
c. encourage the release of carbon
dioxide from the stems
D. reduce the amount of water lost
through evaporation
Q1

Answers

Answer:

answer is C

Explanation:

encourage the release of carbon dioxide from the stems

CaCO3 For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with pH. If the solubility does change, pick the pH at which you'd expect the highest solubility. You'll find data in the ALEKS Data tab. compound Does solubility change with pH? highest solubility pH = 5 pH = 6 pH = 7 yes no yes no yes no g

Answers

Answer:

Hello attached below is the data found in Aleks Data tab

answer :

i) N0

ii) N0

iii) YES ,  pH of highest solubility = 5

Explanation:

i) For CuBr

solubility does not change with pH  hence answer = NO

ii) For MgCl2

solubility does not change with pH hence the answer = NO

iii) For Ba(OH) 2

Solubility does change with pH hence the answer = YES

and the pH at which the highest solubility will occur is = 5

attached below is the reason for the answers given

Please I will give branliest. The question is in the photo

Answers

Answer:

a. Br2(I)+2 KI(aq)》2KBr(aq)+I2

1) The Specific Heat Capacity at 25°C of Gold is 0.129 / (g°C)

a) What is the molar Specific Heat Capacity of Gold in J/(mol °C)​

Answers

Answer:

25.4 J/mol

Explanation:

The specific heat of any substance is referring to the amount of energy required to raise 1 gram of that substance 1 degree kelvin. Molar heat capacity is referring to the amount of energy required to raise 1 mole of that substance 1 degree kelvin. So in order to solve for molar heat capacity of gold we must convert from grams of gold to moles of gold.

( 0.129 J /g) ( 196.97 g/ m o l ) = 25.4 J m o l

196.97 is the molar mass of gold which can be found on the Periodic Table of Elements. Because grams are located on both sides of the denominator they cancel out leaving us with our new units of J/mol.

A chemist titrates 0.200 M NaOH, strong base, with 50.00 ML of 0.150 M HCI, strong acid. How many mL of NaOH will be required to titrate to the endpoint

Answers

[tex](normality \: of \: acid)×(volum \: of \: acid) = (normality \: of \: base)×(volum \: of \: base)[/tex]

0.15N × 50mL = 0.2N × (Vbase)

75mL = Volum of base

37.5mL of NaOH will be required to titrate 0.200 M NaOH, strong base, with 50.00 ML of 0.150 M HCI, strong acid to the endpoint.

How to calculate volume?

The volume of a solution can be calculated using the following formula:

C1V1 = C2V2

Where;

C1 = initial concentrationC2 = final concentrationV1 = initial volumeV2 = final volume

C1 = 0.200MC2 = 0.150MV1 = ?V2 = 50mL

0.2 × V1 = 0.150 × 50

0.2V1 = 7.5

V1 = 7.5/0.2

V1 = 37.5mL

Therefore, 37.5mL of NaOH will be required to titrate 0.200 M NaOH, strong base, with 50.00 mL of 0.150 M HCI, strong acid to the endpoint.

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What do you plan to do this weekend !

( Giving out Branliest ) <3

Answers

Answer:

Go to the pool , Bake, sleep, Watch ,Movies, go out with my freinds<3

Explanation:

Learning Task 3: Choose the letter of the correct answer to complete the
statement. Write your answer on your notebook.
a.
1.
is the oldest form where an image is transferred from
one surface to another.
a. Painting
b. Drawing
C. Printmaking
2. Screen frame commonly made of
covered tightly with
a mesh.
Wood
b. Plastic
C. Paper
3.
technique makes use of woven mesh to support an ink-
blocking stencil
a. Silkscreen printing
b. Intaglio printing
c. Photo emulsion printing
4 .
A tool that usually made of vinyl or rubber blade is called
a. Mesh
b. Squeegee
C. Emulsion

Answers

The oldest form where an image is transferred from one surface to another is printmaking, Screen frame commonly made of covered tightly with wood, technique makes use of woven mesh to support an ink blocking stencil is Silkscreen printing and A tool that usually made of vinyl or rubber blade is called Squeegee.

What is art?

Art is a technique in which we use different kinds of things like paintings, printings, drawings and do exhibition for the decoration purpose.

Print is the oldest art form where an image is transferred from one surface to another surface by applying liquid material on one surface and get the print of that on another surface.Screen frames are generally about 70% of the content of wood material.Silk screen painting is used to transfer ink onto a object, leaving areas made impermeable to the ink by a blocking stencil.In the squeegee paintings, a scrapping implement is used which is made up of rubber blade and vinyl and known as squeegee.

Hence C, A, A and B is the correct answers of the given questions.

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lime juice turn blue limus paper what colour

Answers

Answer:

Red

Explanation:

Lime Juice is acidic which means it would turn the blue litmus paper red

Answer:

red, Lime juice is acidic in nature so it can turn blue litmus paper to red while the alkaline solution can turn the red litmus paper blue.

Explanation:

hope this helps

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5. A flock of geese flies 50 miles per hour. Write a linearequation that gives the distance d in miles that the flockof geese flies in h hours In previewing the following timeline, which text format does it represent?19901774-83U.S.RevolutionaryWar1861-65U.S. CivilWar1914-45World War Iand 111940's-90'sCold WarKorean WarGulf1820s-80'sWestwardExpansion:War on theNativeAmericans &Mexicans1959-75Vietnam War Answer fully and correctly to get brainliest! Thanks! Find the distance between A(0, 1) and B(-4, 6) to the nearest tenth. Change the given sentence into the following tense.Virtual libraries present a new paradigm for learning in school libraries.a) simple past tense b) Past perfect tensec) present continuous tense D) simple future tensE) past progressives tense the pair of elements with the most similar chemical properties are a. Na and F b. O and Kr c. Ne and Ar d. Mg and Cl i don't know what to write and I am asking a question because I want, whats you favorite color The ____________ Desert covers 85% of Algeria. How is the Thomas train an example of a social and cultural influence on the toddler? maraming mga tugon ang ginagawa ng iba't ibang bansa sa buong daigdig para labanan ang diskriminasyon ng mga kababaihan at lgbt Complete the following equation for the cracking of the alkane C20H42.C20H42 2C4H8 + 2C2H4 +................................ Which culture did the HarlemRenaissance bring out in America?A Irish-AmericanB. Italian-AmericanC. African-AmericanD. Chinese-American To compare the driving distances for the two models, you arranged an experiment in conjunction with the Par research team. Forty golf balls of each type were subjected to driving-distance tests. You offered the idea of testing the driving distance with a mechanical hitting machine to isolate any mean differences in the distances to the two model golf balls themselves. The results of the tests, with distances measured to the nearest yard, follow. Let1=population mean driving distance for the current golf ball2=population mean driving distance for the new golf ballYou begin your report to the Par, Inc. management team by offering the following hypothesis pair as a way of representing the problem.H0 : 1 - 2 0 H1 : 1 - 2 > 0How would you explain these hypotheses to the management team?a. We assume that the current model ball has an average driving distance that is greater than the new cut-resistant ball. However, if the new model has a mean driving distance that is greater than or equal to the current model, then we should reject our assumption.b. We assume that the driving distances for the current model and the new model are equal. If the driving distances between the current and new models are very far apart, then we should reject our assumption.c. We assume that the current golf ball has an average driving distance that is greater than or equal to that of the new model ball. However, if the new model has a mean driving distance that is significantly longer, then we should reject our assumption.d. We assume that the new golf ball has an average driving distance that is greater than or equal to that of the current ball. However, if the current model has a mean driving distance that is significantly longer, then we should reject our assumption. Use your knowledge of word parts and context clues to determine the meaning if the word motivational Find PQ!!!!!!!!!!!!!!!!!!!!!!! Todos los 1. deben tener 2. Es un 3. con la 4.en que vivimos.Todos debemos seguir y respetar nuestros 5. Por lo tanto, es necesario que6. una campaa para 7. los problemas sociales y polticos. No podemoscometer los mismos 8. del pasado. Es importante superar los 9.y nuncapensar en el 10. Why principle of indemnity not applies in life insurance? All of the _____ were ready to die for their ______ A)warriors / motherlandB)sources / toleranceC)forts/ frot linesD)veterans / statues Read each group of sentences. Two of the sentences are punctuated correctly. Choose the sentence that contains incorrect comma usage. A)zeke, in fact, beat his old record in the breaststroke by almost two seconds B) cats, like other seemingly harmless animals, can cause a lot of harm with their claws C) the fledgling business, though small was doing quite well what is the wavelength of a wave with the frequency of 330 Hz and a speed of 343 m/s