When the vapor pressure of a liquid is equal to the atmospheric pressure, the liquid _____
O has no observable changes
O boils vigorously
O begins to boil
O evaporates

The Δ Hrxn, in kJ/mol, for this reaction= 11.04 kJ/mol

Given

0.848 g ammonium nitrate

The enthalpy change : +0.117 kJ

Required

Δ Hrxn, in kJ/mol

Solution

Delta H reaction (ΔH) is the amount of heat change between the system and its environment  

The value of ° H ° can be calculated from the change in enthalpy of standard formation:  

∆H ° rxn = ∑n ∆Hf ° (product) - ∑n ∆Hf ° (reactants)  

mass of NH4NO3 = 0.848 g

mol of NH4NO3(MW = 80 g/mol)

mol = 0.848 : 80

mol = 0.0106

The Δ Hrxn :

= 0.117 kJ : 0.0106 mol

= 11.04 kJ/mol

1.43 × 10⁻²⁰ mol Li

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Step 1: Define

8.63 × 10³ atoms Li

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

1.43355 × 10⁻²⁰ mol Li ≈ 1.43 × 10⁻²⁰ mol Li

Answer: first is last second is first and 3rd is second

Explanation:

Answer:

Examples of EM waves are radio waves, microwaves, infrared waves, X-rays, gamma rays, etc.

Answer:

Electromagnetic waves can be split into a range of frequencies. This is known as the electromagnetic spectrum. Examples of EM waves are radio waves, microwaves, infrared waves, X-rays, gamma rays, etc.

Explanation:

Answer:

i think i like 14 or 8 atom

Explanation:

Answer:

3 moles of Oxygen

Explanation:

The chemical formula of a compound is a representation which shows all the elements therein and the mole relationship between them expressed as subscripts.

   NaHCO₃  implies:

      1 mole of baking soda contains:

     1 mole of Na

     1 mole of Hydrogen

     1 mole of carbon

  And 3 moles of Oxygen

In the given question, 136293840 seconds are present in 4.3 years.

A second is a unit of time that is equal to 1/60th of a minute and is used to measure short periods of time.

To convert 4.3 years to seconds, we can use the following conversion factors:

1 year = 365.25 days (accounting for leap years)

1 day = 24 hours

1 hour = 60 minutes

1 minute = 60 seconds

So, we can start by multiplying the number of years by the number of days per year:

4.3 years [tex]\times[/tex] 365.25 days/year = 1577.475 days

Next, we can multiply the number of days by the number of hours per day:

1577.475 days [tex]\times[/tex] 24 hours/day = 37859.4 hours

Then, we can multiply the number of hours by the number of minutes per hour:

37859.4 hours [tex]\times[/tex] 60 minutes/hour = 2271564 minutes

Finally, we can multiply the number of minutes by the number of seconds per minute to get the total number of seconds:

2271564 minutes [tex]\times[/tex] 60 seconds/minute = 136293840 seconds

Therefore, in 4.3 years there are approximately 136293840 seconds.

Learn more about second here:

https://brainly.com/question/31828197

#SPJ6

Answer:

He was having a tough time as his mother abandoned him at the age of three or we can say his mother passed which led to his insecurity.

Answer:

Okay, Left top= waning gibbous

left second= new moon

left third= third quarter

left fourth= waxing crescent

right top= Waning crescent

right second= first quarter

right third= full moon

right fourth= Waxing gibbous

hope you do good :)

Answer:

first one waining gibbious

secound one waining crecent

third one new moon

fourth one first quarter

fithe one third quarter

sixth one  full moon

sevnth one waxing crecent

eithe one waxing gibbious

Explanation:

Answer:

diffusion

Explanation:

is the movement of molecules from high concentration to low concentration.

Answer:

1 Sodium, 1 Aluminum (1 Sulfur, 4 Oxygen)

Explanation:

hope that helps

HI has the least volume

Given

Gasses and molar mass

Required

The least volume

Solution

Ideal gas law

PV=nRT

V = (nRT)/P

n = mass : MW(Molar weight=molar mass)

[tex]\tt V=\dfrac{\dfrac{mass}{MW}RT }{P}\\\\V=\dfrac{mass.RT}{MW.P}[/tex]

so V is inversely proportional to MW(molar mass)

Because the values of P, R, T, and mass are the same, what matters is the value of the molar mass of each compound. The larger the molar mass the smaller the volume

From the available molar mass data, HI has the largest molar mass, so HI has the smallest volume

Answer:

Opposite charges attract one another. The slight positive charges on the hydrogen atoms in a water molecule attract the slight negative charges on the oxygen atoms of other water molecules. This tiny force of attraction is called a hydrogen bond.

Considering the definition of hydrogen bond, the correct answer is option A: he Oxygen has a partial negative charge which attracts atoms and molecules that have a position or partial positive charge.

In hydrogen bonds, a molecule that presents hydrogen interacts with another that presents an atom with high electronegativity, such as oxygen, fluorine or nitrogen (O, F, N). In this way, between the hydrogen, which has a low electronegativity and the electronegative atom, an interaction is established, due to their opposite charges.

On the other hand, electronegativity is the ability of an atom to attract shared electrons in a covalent bond.

In the case of water, because oxygen is more electronegative than hydrogen, electrons, which have a negative charge, are more likely to be closer to the oxygen atom than to the hydrogen atom, which causes each hydrogen atom to have a positive charge is called a positive partial charge, and that of oxygen, a negative charge, since it has the electrons closer together.

In summary, the correct answer is option A: he Oxygen has a partial negative charge which attracts atoms and molecules that have a position or partial positive charge.

Learn more:

Answer:

there is no picture so we can't tell why the containers are heavy

But, an irregular surface, for every bump, the light bounces down up down up down up.

I hope this helped! +*♡

Answer:

Mass = 5013.36 g

Explanation:

Given data:

Number of moles of CsPO₄ = 22 mol

Mass of sample = ?

Solution:

Formula:

Mass = number of moles × molar mass

Molar mass of CsPO₄ = 132.91×1 + 30.97×1 +16×4 = 227.88 g/mol

by putting values,

Mass = 22 mol ×  227.88 g/mol

Mass = 5013.36 g

Answer:

The level of CO2 in the blood is detected by chemoreceptors located in the aortic arch

and carotid arteries. These send impulses to either the cardioaccelerator or

cardioinhibitor center in the hypothalamus of the brain, which in turn sends an

impulse to the pacemaker of the heart to increase or decrease heart rate. Draw a

feedback diagram to illustrate what happens to restore homeostasis when blood CO2

rises.

Explanation:

The level of CO2 in the blood is detected by chemoreceptors located in the aortic arch

and carotid arteries. These send impulses to either the cardioaccelerator or

cardioinhibitor center in the hypothalamus of the brain, which in turn sends an

impulse to the pacemaker of the heart to increase or decrease heart rate. Draw a

feedback diagram to illustrate what happens to restore homeostasis when blood CO2

rises.

Answer:

the third one because oceans don't affect the weather  

Explanation:

Answer:

fe

Explanation:

forms one binary compounds with chlorine

Answer:

carbon dioxide I beleive.

Explanation:

dry ice is frozen liquid carbon dioxide and when it melts it gives off carbon dioxide gas.

Answer:

784.4kg

Explanation:

Given parameters:

Mass of Mg  = 200kg

Unknown:

Mass of MgCl₂  = ?

Solution:

  The reaction equation is given as:

            Mg  +  Cl₂ →   MgCl₂

Find the number of moles of the given specie;

  Number of moles of Mg = [tex]\frac{mass}{molar mass}[/tex]   = [tex]\frac{200000}{24.3}[/tex]   = 8230.5mole

So;

   1 mole of Mg will produce 1 mole of MgCl₂

   8230.5mole of Mg will produce 8230.5mole of MgCl₂

Mass of MgCl₂   = number of moles x molar mass

                    Molar mass of MgCl₂  = 24.3 + 2(35.5) = 95.3g/mol

 Mass of MgCl₂   = 8230.5mole x  95.3g/mol  = 784.4kg

Answer:The height of First Copy is 20 cm.

Step-by-step explanation:

Given:

Original Height = 25 cm

First copy is reduce to 80% of Original height.

Therefore to find the height of first copy can be find out by multiplying 80 with original height and then dividing by 100.

∴ Height of First Copy =

Hence Height of first copy is 20 cm

Now Another copy is reduce to 85% of First Copy.

Therefore to find the height of another copy can be find out by multiplying 85 with first copy height and then dividing by 100.

∴ Height of Another Copy =

Hence Height of Another copy is 17 cm

Explanation:

Answer:

it is D

Explanation:

edge

Answer:

It's

Explanation:

I took the edge 2023

Answer:

The answers to your question are given below

Explanation:

The equation for the reaction is given below:

2KClO₃ —> 2KCl + 3O₂

The total number of each atoms present in the reactants and products can be obtained by doing a head count as illustrated below:

Reactants >>>>>> Number of atoms

Potassium (K) >>> 2 × 1 = 2

Chlorine (Cl) >>>> 2 × 1 = 2

Oxygen (O) >>>>> 2 × 3 = 6

Products >>>>>>> Number of atoms

Potassium (K) >>> 2 × 1 = 2

Chlorine (Cl) >>>> 2 × 1 = 2

Oxygen (O) >>>>> 3 × 2 = 6

Answer:

the paper could be burn up

Answer: Calculate the heat evolved (per mo SO2) for the reaction of sulfur with oxygen to form SO . Calculate the heat evolved from a reaction mixture of 13.4L SO at 1 ATM and 273K ... N-2 (g) + Os (g) → 2 NO (g) H = +180.6 kJ.

Explanation: I hoped that was helpful!