How many moles of N2O5 are needed
to produce 7.90 g of NO2?

Answer:

M = 1.04 M

Explanation:

Given data

Molarity of solution = ?

Mass of HCl = 6.27 g

Volume of solution = 163 mL (163 mL× 1L /1000 mL = 0.163 L)

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

Number of moles of HCl:

Number of moles = mass/molar mass

Number of moles = 6.27 g / 36.5 g/mol

Number of moles = 0.17 mol

Molarity:

M = 0.17 mol/ 0.163 L

M = 1.04 M

Answer:

4.6

Explanation:

CnHm is the general closed chemical formula of liquid hydrocarbons used as a fuel in the internal combustion engines. However, hydrocarbons consist of hydrogen and carbon and also small amounts of O2, H2, S, H2O, and some metals containing crude oil derivatives .

Answer:

HNO3

Explanation:

HNO3 is nitric acid. Nitric acid as a compound contains Hydrogen, Nitrogen and Oxygen molecules, therefore its chemical formula is HNO3. Very useful for fertiliser and chemical making. This acid can be manufactured from ammonia and it is a very important chemical that is used for manufacturing fertilizers.

Nitric acid is useful for the manufacturing of ammonium nitrate and calcium ammonium nitrate which have uses as fertilizers.

Answer:14.4g

Explanation:

Answer:

.574

Explanation:

smallest number of digits in the expression was 3, so the final answer should have 3 sig figs

Answer:

CH3CH2CH2CH3 <CH3CH2OCH3<CH3CH2OCH2CH3< CH3CH2CH2CH2NH2

Explanation:

Some important factors affect the boiling point of aliphatic compounds. Prominent among them are;

1) relative molecular mass

2) nature of intermolecular

3) surface area of compound.

In this case, the nature of intermolecular forces and the molecular mass of the compounds are worthy of mention.

The degree of dipole interaction in CH3CH2CH2CH2NH2 is far greater than that in the ethers hence the amine has the highest boiling point followed by the ether of higher molecular mass then the ether of lower molecular mass and finally the alkane has the lowest boiling point because only dispersion forces are involved.

The correct ranking of the given organic compounds from highest to lowest boiling points is given by;

Option D; CH3CH2CH2CH2NH2 < CH3CH2OCH2CH3 < CH3CH2OCH3 < CH3CH2CH2CH3

We are given the organic compounds;

CH3CH2OCH2CH3

CH3CH2OCH3

CH3CH2CH2CH3

CH3CH2CH2CH2NH2

The family names of the given organic compounds are;

CH3CH2OCH2CH3 is an ether

CH3CH2OCH3 is an ether

CH3CH2CH2CH3 is an alkane

CH3CH2CH2CH2NH2 is an amine

The boiling points are given in the order from highest to lowest as;

Alkanes < Ethers < Amines

This is because Amines have higher possibility of hydrogen bonding than the others.

Lastly, a longer chain ether will have a higher boiling point than the shorter chain one because it can have more Vander walls force interactions.

Thus, the correct order of arrangement of the given organic compounds from highest to lowest boiling point is;

CH3CH2CH2CH2NH2 > CH3CH2OCH2CH3 > CH3CH2OCH3 > CH3CH2CH2CH3

Read more about ranking of organic compounds according to boiling points at; https://brainly.com/question/13708633

a)CH3-CH2-CH2-CH=CH2

b)CH3-CH2-CH2-CH2-CH2-CH2-CH3

c)CH≡C-CH2-CH2-CH2-CH3

d)CH3-CH2-CH2-CH2-CH2-CH2-CH=CH2

e)CH3-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3

give me brain list

Answer:

1. an incomplete octet is an valence shell that is not fully stable since it doesn't have 8 electrons

2.an odd electron molecule is a molecule that has an odd number of electrons but is still stable

3. there are extra electrons in an expanded octet because the molecules' central atoms make extra bonds that don't comply with the octet rule.

Explanation:

Answer:

See explanation

Explanation:

Hydrogen has only one valence electron. Sometimes, hydrogen is included as part of group 1 or 17 in the periodic table. Is this correct? Well, the answer to this question is not so straight forward!

Let us remember that hydrogen forms a univalent positive ion H^+ just like the group 1 elements, but it also forms a univalent negative ion H^- just like group 17 elements. Also, hydrogen is a gas and forms a molecular diatomic compound just like group 17 elements. This is not the case with other group 1 elements. We can see that hydrogen is chemically and physically dissimilar to other group 1 elements hence one can logically argue against its inclusion in group 1. Also, it is not a halogen, so we can also argue against its inclusion in group 17.

However, it is convenient to include hydrogen in the main groups 1 or 17 when discussing its chemical properties in order to make it easier to assimilate. If we place hydrogen in group 1, we can understand that it forms univalent positive ions. Similarly, if we place it in group 17, we understand that it forms univalent negative ions.

Most times hydrogen is just written separately at the top right corner of the periodic table and not as a member of any group because of the issues outlined above.

Hydrogen is placed in the main group of the periodic table since it has only one electron in it and it also behaves like alkali metal properties.

Hydrogen forms a univalent positive ion [tex]H^+[/tex]group 1 elements, but it also forms a univalent negative ion [tex]H^-[/tex]group 17 elements. Also, hydrogen is a gas and forms a molecular diatomic compound just like group 17 elements.

This is not the case with other group 1 elements. We can see that hydrogen is chemically and physically dissimilar to other group 1 elements hence one can logically argue against its inclusion in group 1. Also, it is not a halogen, so we can also argue against its inclusion in group 17.

If we place hydrogen in group 1, we can understand that it forms univalent positive ions and if it is placed in halogen group it will form univalent negative ion.

Find more information about Hydrogen here:

brainly.com/question/25597694

Answer:

B.... i think so, not sure lol

Answer:

B. Driving to get supplies

Explanation:

Don't drive in the middle of a tornado EHLBFDHS

Answer:

The particles in a liquid as it freezes slow down.

Explanation:

This is because heat is energy and when there is less heat, there is less energy causing the particles to slow down.

Look at the mole ratio in the balanced equation

2CO + O2 ==> 2CO2

3.44 mol O2 x 2 mol CO/mol O2 = 6.88 moles CO

Answer:

Volume required = 0.327 L

Explanation:

Given data:

Volume in L = ?

Molarity of solution = 1.772 M

Mass of BaCl₂ = 123 g

Solution:

First of all we will calculate the number of moles of BaCl₂,

Number of moles = mass/molar mass

Number of moles = 123 g/ 208.23 g/mol

Number of moles = 0.58 mol

Now, given problem will solve by using molarity formula.

Molarity = number of moles / volume in L

1.772 M = 0.58 mol / Volume in L

Volume in L = 0.58 mol  / 1.772 M

Volume in L = 0.327 L

Answer:

Plants are made of gas and mass

Answer:

hello again :-)))))))

Answer:

uifhiuwrhuio fw

Explanation:

hfuiwehgu34iht3uht34[pht349348ut0tg

Answer:

b. 1

Explanation:

If we consider it carefully we will notice that the electronic configuration of iron III is; [Ar] 3d5 4s0.

Now, three electrons from the d orbital are paired with the three electrons from three F atoms according to the valence bond theory. This leaves out one pair of electrons localized on the d orbital of iron.

Hence the compound has one lone pair of electrons.

Answer:

total is 20.8

Explanation:

thttjhrrdghg

Answer:

D. It is extremely reactive.​

Explanation:

Hello!

In this case, since potassium is an alkali metal, it is known those are extremely reactive because the energy required to ionize them is very low, it means they react so easily. For instance, even in the presence of water, potassium is able to react and form a purple flame as a product of the reaction:

[tex]2K+2H_2O\rightarrow 2KOH+H_2[/tex]

As well as potassium, the rest of the elements belonging to the alkali metals series are extremely reactive; therefore the answer is D. It is extremely reactive.​

Best regards!

Answer:

FeCl₂

Explanation:

Empirical formula is the simplest formula of a compound.

Mass percentage of Chlorine  = 56%

Mass percentage Iron  = 100  - 56  = 44%

                                                              Elements  

                                                 Fe                                 Cl

Percentage mass                    44                                  56

moles                                      44/55.85                   56/35.5

                                                  0.79                         1.56

Divide by the smallest

number                                    0.79/0.79                 1.56/0.79

                                                        1                                 2

The empirical formula of the compound is FeCl₂

Answer:

SUPER MARIOLWEJHRTÑWQEGTPWIQETGQWKÑEJGBKSDLJBGKSJDLGB

Explanation:

Answer:

B) increases

higher temperature = higher pressure

The enthalpy change accompanying the reaction of 0.95 g of S is -11.85 kJ

Given

ΔH° for the reaction is -790 kJ

Required

The enthalpy change

Solution

Reaction

2S (s) + 3O₂(g) = 2SO₃ (g)

mol of S(MW=32 g/mol) :

[tex]\tt mol=\dfrac{0.95}{32}=0.03[/tex]

For 2 mol S, the entalphy = -790kJ

The enthalpy change for 0.03 mol :

[tex]\tt \dfrac{0.03}{2}\times -790~kJ=-11.85~kJ[/tex]

The enthalpy change accompanying the reaction will be "-11.85 kJ".

Given:

Value of ΔH°,

According to the question,

→ [tex]2S(s) +3O_2(g) =2SO_3(g)[/tex]

Mol of S will be:

= [tex]\frac{0.95}{32}[/tex]

= [tex]0.03[/tex]

hence,

The enthalpy change for 0.03 mol will be:

= [tex]\frac{0.03}{2}\times -790[/tex]

= [tex]-11.85 \ kJ[/tex]

Thus the answer above is correct.

Learn more:

https://brainly.com/question/13799877

You haven't provided two critical pieces of info needed to answer this question. First, what's the half-life of Californium-252, and second, what's the initial amount of Californium-252. Given these two values, you can then set up an exponential equation to find the time elapsed.

Answer: I think that is C, a light sensor but im not sure

Explanation:

Answer:

temperature probe

Explanation:

Answer:5.=D

6.=B

Explanation:

Answer:

I believe the answer is Reflecting Telescope

Explanation:

-leeknowishawt

Answer:

Option 1

Explanation:

Harry: *wakes up and finds himself at the bottom of a mountain slope and asks, "Where are we?"

Harry: "Are we in Iceland?"

Hans: "Nej."

The Professor: *Gets up and says, "what do you mean? No----What are your reasons?"

Harry: *Rises* "No, Hans is wrong."

After all the innumerable surprises of this journey, a yet more singular one was reserved to us. I expected to see a cone covered by snow, by extensive and widespread glaciers, in the midst of the arid deserts of the extreme northern regions, beneath the full rays of a polar sky, beyond the highest latitudes.

*Time passes while we try to figure out what is happening and where we are. Harry finds that he was saved from death because Hans had saved him.*

Answer:

Both diseases affect the control of voluntary muscles.

Explanation:

Parkinson's disease is a progressive brain disease that affects movement. It affects the nerve cells that produce dopamine in the part of the brain called substantia nigra. The symptoms include shaking, stiffness, and difficulty with walking, balance, and coordination. Symptoms get worse with time, often leaving people with difficulty walking and talking.

ALS (amyotrophic lateral sclerosis) is a progressive nervous system disease that affects nerve cells in the brain and spinal cord. The first symptoms usually involve muscle weakness, and as the disease progresses, it results in the loss of muscle control.

Scientists don't know the exact cause of these diseases. As the cause is not known, there is no exact way to prevent them. There is no cure for them, either. The treatment is focused on the management of symptoms.

This is why the third option is the correct one.

Answer:

A

Explanation:

Answer:

B. The western coast of the united states

Explanation:

I'm not sure if its correct but its pretty simple to understand, if you look at the arrows red represents heat, and blue represents cold,  the red arrows (warm climate) is at the left more towards the U.S, therefore looking at the guide of North West South and East, it is at the western coast of the u.s

Hope this help! <3

Answer:

Drowned

Explanation:

We can use drown here, that sounds appropriate.