All categories

4 years ago

URGENT PLZ HELP!!!!! 50 POINTS!!!!!!!!!

Chemistry

2 answers:

Studentka2010 [4]4 years ago

7 0

Answer:

Just because a charred body is found at a fire scene does not mean that the fire caused the death. For example, the victim could have been killed prior to the fire and the fire set to cover the homicide. Careful examination of the body and the scene will determine how death occurred and what relationship the victim had to the fire. One way to see if the victim was deceased prior to the fire is to check the lungs for signs smoke inhalation, if no signs are present, then the person was dead before the fire started.

Explanation:

Vlad [161]4 years ago

5 0

You would check to see if there where any wounds on the body look or traces of Poisson in the throat then you could determine if it was because of the fire.

You might be interested in

Nitrate salts (NO3), when heated, can produce nitrites (NO2) plus oxygen (O2). A sample of potassium nitrate is heated, and the

Lostsunrise [7]

Answer: a) 0.070 moles of oxygen were produced.

b) New pressure due to the oxygen gas is 2.4 atm

Explanation:

According to ideal gas equation:

$PV=nRT$

P = pressure of gas = 2.7 atm

V = Volume of gas = 700 ml = 0.7 L

n = number of moles = ?

R = gas constant = $0.0821Latm/Kmol$

T =temperature = 329 K

$n=\frac{PV}{RT}$

$n=\frac{2.7atm\times 0.7L}{0.0821 L atm/K mol\times 329K}=0.070moles$

Thus 0.070 moles of oxygen were produced.

When the 700 mL flask cools to a temperature of 293K.

$PV=nRT$

$P=\frac{nRT}{V}$

$P=\frac{0.070\times 0.0821\times 293}{0.7}$

$P=2.4atm$

The new pressure due to the oxygen gas is 2.4 atm

7 0

4 years ago

What is acid rain? Which fossil fuel causes acid rain? What are the chemical reactions that produce the acid?

Ahat [919]

Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

When we burn the coal that produce sulfur dioxide .

6 0

3 years ago

Wisdom teeth are the third and final set of human molars that come in during the late teens or early twenties. In some cases, th

Marina86 [1]

The answer is Vestigal. It is a type of anatomical structure that no longer serves any function. Over time they are no longer needed in the body. Apart from the wisdom tooth, another example would be the tail bone which has no use for humans.

5 0

3 years ago

Read 2 more answers

Write the balanced NET ionic equation for the reaction when AlCl 3 NaOH are mixed in aqueous solution. If no reaction occurs, wr

bekas [8.4K]

it makes aloh

AlCl3 + 3NaOH = AlOH3 + 3NaCl

Al3+ + 3Cl- + 3Na+ + 3OH- = AlOH3 + 3Na+ + 3Cl-

all cancels out except

Al3+ + 3OH- = AlOH3

8 0

4 years ago

Which is required for karst topography to form?

m_a_m_a [10]

D. Chemical weathering
*i think .

8 0

3 years ago