Is oxygen the deadliest gas?

Answers

Answer 1

Answer:  Nitrogen is the deadliest gas

Explanation:

It is the most prevalent gas in the atmosphere. Nitrogen comprises more than 75% of the air we breathe. Therefore, N2 is the most lethal of all destructive, dangerous, and toxic gases. Since it is the gas that we breathe in the most, it is found abundantly in the atmosphere.


Related Questions

How many grams of Si are there in a sample of Si that contains the same number of moles as a 60.8 gram sample of P?

Answers

Answer:

55.1 g Si.

Explanation:

Hello there!

In this case, for the given mole-mole relationship, it is possible to set up the following mole ratio as the moles of Si and P are the same:

1 mol Si = 1 mol P.

Next, since one mole of silicon has a mass of 28.09 g and one of phosphorous of 31.0 g, we can set up the following expression for the mass of silicon:

[tex]60.8gP*\frac{1molP}{31.0gP}*\frac{1molSi}{1molP}*\frac{28.09gSi}{1molSi}[/tex]

Therefore, the result is 55.1 grams of silicon.

Best regards!

A tube contains hydrogen and oxygen gas. Its total pressure is known to be 4.53 atm. It's the pressure of the hydrogen is 2.7 atm, what us the pressure of the oxygen in atm?

Answers

Answer:

1.83 atm

Explanation:

Total pressure is the sum of partial pressures, so the pressure of hydrogen and pressure of oxygen add to equal 4.53 atm

4.53 = 2.7 + Po

Po = 4.53 - 2.7 = 1.83 atm

Earthquakes and what kind of plate boundary movement cause them?

Answers

Convergent plate boundaries if I’m not mistaken

pleaaseeee help im failing so bad3

Answers

primary and secondary!

As altitude increases, what happens to air pressure the choices are it fluctuates, it increases, it decreases or it stays the same

Answers

Answer:

it decreases

Explanation:

It is a common saying the pressure decreases with height. This means that as altitude increases, the pressure of air decreases. The higher you go above sea level, the pressure becomes lesser.

This is as a result of decrease in the amount of air above sea level and hence a decrease in the density of air as altitude increases.

Hence, with increasing altitude, pressure decreases.

Answer:

It decreases

Explanation:

as pstnonsonjoku says in their answer.

I cannot give you anything more than I just did a question on this an it was correct because i'm in a timed test and just happend to see this!

Have a great nightish day!

When performing a neutralization reaction, how should students test the solution to be sure which is the acid and which is the base?

Answers

Explanation:

La reacción entre un ácido y una base se llama neutralización. Cuando en la reacción participan un ácido fuerte y una base fuerte se obtiene una sal y agua. Si una de las especies es de naturaleza débil y la neutralización se produce en disolución acuosa también se obtiene su respectiva especie conjugada y agua.

Which of the following could be added to a solution of potassium fluoride to prepare a buffer?
A) ammonia
B) potassium acetate
C) hydrochloric acid
D) sodium fluoride
E) sodium hydroxide

Answers

I think the answer will be sodium hydroxide and the reason why is because
Sodium hydroxide is the answer

Instructions: Use the periodic table to answer the questions below:
1) How many periods are there on the periodic table?
2) How many groups are there on the periodic table?
3) Which element is found in Group 2 and Period 3?
4) Which element is found in Group 17 and Period 2?
5) Which element is found in Group 10 and Period 4?
6) Which element is found in Group 18 and Period 6?
7) Which element is found in Group 1 and Period 7?
8) Which element is found in Group 14 and Period 6?

Answers

Answer:

1. 7 periods

2. 18 groups

3.Magnessium

4.Fluorine

5.Nickel

6.Radon

7.Francium

8.Lead

Explanation:

An organism whose cell contains a nucleus.

Answers

Answer:

Eukaryotes

Explanation:

Which of the following is a TRUE statement?

a.
A molecule always has three types of elements present

b.
Compounds always include the elements hydrogen and sodium

c.
Compounds include things we use in our everyday lives

d.
All elements prefer to hang out with other elements and form molecules

Answers

Answer:

b

Explanation:

It is going to be B is B is it

Can yall help me with this one, thanks!

Answers

Answer:

Element   atom    molar mass     Total        % composition

Na               1            23                    40             57.5 %

O                 1            16                     40              40%

H                1               1                      40              2.5 %

The given compound is NaOH.

Na : number of atom= 1

Molar mass= 23 g/mol

Total mass of NaOH = 40 g/mol

% composition by mass = [tex]\frac{\text {mass of atom}}{\text {Total mass}}\times 100=\frac{23}{40}\times 100=57.5\%[/tex]

O : number of atom= 1

Molar mass= 16 g/mol

Total mass of NaOH = 40 g/mol

% composition by mass = [tex]\frac{\text {mass of atom}}{\text {Total mass}}\times 100=\frac{16}{40}\times 100=40\%[/tex]

H : number of atom= 1

Molar mass= 1 g/mol

Total mass of NaOH = 40 g/mol

% composition by mass = [tex]\frac{\text {mass of atom}}{\text {Total mass}}\times 100=\frac{1}{40}\times 100=2.5\%[/tex]

A container at equilibrium contains the following concentrations: [Hz] - 0.30 M and [HI]
0.90 M. The equilibrium constant is equal to 6.0. What is the concentration of I2 at
equilibrium?
Hzig) + 1218 = 2 Hle)

Answers

Answer: The concentration of [tex]I_2[/tex] at equilibrium is 0.45 M

Explanation:

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as [tex]K_c[/tex]  

For the given chemical reaction:

[tex]H_2(g)+I_2(g)\rightarrow 2HI(g)[/tex]

The expression for [tex]K_c[/tex] is written as:

[tex]K_c=\frac{[HI]^2}{[H_2]^1[I_2]^1}[/tex]

[tex]6.0=\frac{(0.90)^2}{(0.30)^1\times (I_2)^1}[/tex]

[tex][I_2]=0.45M[/tex]  

Thus concentration of [tex]I_2[/tex] at equilibrium is 0.45 M

If those same 25 grams are carbon are reacted, how many moles of carbon dioxide will be produced?​

Answers

Answer:

I'm am so cool I'm depressed tho so yeah good job lady

Explanation:

Do you think it is a good idea for all scientists to use the same periodic table of elements? Why or why not?

Answers

Yes because what other else can a scientist have

Hey guys so my cuz gave me this stone when he went to mexico
can u plz tell me what kind of stone this is?

Answers

Looks like candy lol .....

help me pretty please

Answers

Answer:

If i had to take a stab at it would say C

Explanation:

Answer:

I think it might be C but not 100% sure.

Explanation:

When the object transmits all color frequencies.

How many particles are in a 34 g sample of Al2(SO4)3?
please help!

Answers

Answer:

5.98 × 10^22 particles

Explanation:

To get the number of particles (nA) in a substance, we multiply the number of moles of the substance by Avogadro's number (6.02 × 10^23)

The mass of Al2(SO4)3 given in this question is as follows: 34grams.

To convert this mass value to moles, we use;

Mole = mass/molar mass

Molar Mass of Al2(SO4)3 = 27(2) + {(32 + 16(4) }3

= 54 + (32 + 64)3

= 54 + 288

= 342g/mol

mole (n) = 34/342

n = 0.0994mol

number of particles (nA) of Al2(SO4)3 = 0.0994 × 6.02 × 10^23

= 0.598 × 10^23

= 5.98 × 10^22 particles

What is the formula to find
moles

Answers

Explanation:

these are the formula that u need to know

1. moles= concentrate × volume

2. moles = mass / mr

3. moles = volume in dm3 / 24dm^3

4. moles = Pressure in pa × Volume in m3 / 8.031 × temperature in K

hope this helps :)

(True or false) The blood carries hormones to target tissues around the body so the hormones can control the activity of those cells

Answers

Answer:

True

Explanation:

Answer:

True

Explanation:

Hormones  are chemical messengers secreted into blood or extracellular fluid by one cell that affect the functioning of other cells. Most hormones circulate in blood, coming into contact with essentially all cells. However, a given hormone usually affects only a limited number of cells, which are called target cells.

Number 8


in metals, reactivity increases ____ across a period, and in non metals reactivity increases ____ across a period.


A. to the left,to the left
B. to the left, to the right
C. to the right , to the left
D. to the right, to the right

Answers

It’s B. To the left,to the right

❤️

What does the charge tell you about an atom?
Brainliest!!!!!!

Answers

Answer:

The charge will tell you if the atom is neutral, positive, or negative. "The charge of an atom is the number of protons minus the number of electrons."

Organisms change energy from the environment or from their food into other types of energy. This is called what?

Answers

Answer:

Metabolism

Explanation:

This is called Metabolism.

Metabolism is a combination of spontaneous chemical reactions which release non-spontaneous energy and chemical reactions requiring energy to proceed. In order to perform cellular processes, living organisms can take energy from food, nutrients or sunlight.

Y’all I need help ASAP

What are the correct numbers to balance this equation......?

__NaCI2+__Col2——> __Nal2+__CoCI2

Answers:
1)not possible to balance
2) 2...2—>...2...2
3) 3...3—>...3...3
4)it’s already balanced.

Answers

Answer:

yes it is already balanced

just a tricky question!!

Explanation:

Over millions of years silt washed into a lake formed layers of sedimentary rock. What type of rock was likely formed?

Answers

Answer:

Explanation:

siltstone

Over millions of years, silt washed into a lake formed layers of sedimentary rock. What type of rock was likely formed? A type of detrital sedimentary rock called siltstone was the likely product of this process.

Which of the following are things that may change during an experiment?

Answers

Answer:

The things that are changing in an experiment are called variables. A variable is any factor, trait, or condition that can exist in differing amounts or types.

How much force is needed to accelerate a 1000-kg car at a rate of 3 m/s2? a 1003 N b 0.003 N c 3000 N d 333.3 N

Answers

Answer:

Option c.

Explanation:

According to Newton's law, formula to solve this problem is:

F = m . a

Mass → 1000 kg

a → 3 m/s²

F = 1000 kg . 3m/s² →  3000 N

1 N = 1 kg .  m/s²  according to SI, Internation System of units.

You had a closed tank of air at a pressure of 4 atm and temperature of 20 degrees Celsius. When the tank and the air are heated to 40 degrees Celsius, what is the pressure if the volume remains constant?​

Answers

Answer:

The pressure will be 4.27 atm.

Explanation:

Gay-Lussac's law can be expressed mathematically as follows:

[tex]\frac{P}{T} =k[/tex]

Where P = pressure, T = temperature, K = Constant

This law indicates that the quotient between pressure and temperature is constant.

This law indicates that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move faster. Then the number of collisions with the walls increases, that is, the pressure increases. That is, the pressure of the gas is directly proportional to its temperature.

In short, when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases.

You want to study two different states, an initial state and a final state. You have a gas that is at a pressure P1 and a temperature T1 at the beginning of the experiment. By varying the temperature to a new value T2, then the pressure will change to P2, and the following will be fulfilled:

[tex]\frac{P1}{T1} =\frac{P2}{T2}[/tex]

In this case:

P1= 4 atmT1= 20 C= 293 K (being 0 C= 273 K)P2= ?T2= 40 C= 313 K

Replacing:

[tex]\frac{4 atm}{293 K} =\frac{P2}{313 K}[/tex]

Solving:

[tex]P2= 313 K* \frac{4 atm}{293 K}[/tex]

P2= 4.27 atm

The pressure will be 4.27 atm.

Pick one answer do not put any links please

Answers

The answer is D! This adaptation helps the eel fend off potential threats! Hope this helps, have a great day!

how acceptance of responsibility influence affective in communication​

Answers

Answer:

f

Explanation:

The nicotine molecule cannot make ionic bonds. Change nicotine into a different molecule, one that can now can make ionic bonds.

Answers

Answer:

See explanation

Explanation:

Nicotine is a covalent molecule. Recall that covalent molecules are not soluble in water and do not have any kind of ionic interaction.

Let us recall that nicotine contains a nitrogen atom having a lone pair of electrons. When nicotine reacts with HCl, this lone pair is protonated to form the ionic compound called nicotine hydrochloride.

C₁₀H₁₄N₂ + HCl --------> C₁₀H15N₂Cl

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