A substance has a molecular formula of C8H10N4O2

Answers

Answer 1

The empirical formula of a substance = C₄H₅N₂O

Further explanation  

The empirical formula is the smallest comparison of atoms of compound forming elements.  

A molecular formula is a formula that shows the number of atomic elements that make up a compound.  

(empirical formula) n = molecular formula  

((empirical formula)n=C₈H₁₀N₄O₂

divide by 2 :

(C₄H₅N₂O)₂=C₈H₁₀N₄O₂


Related Questions


A_________is the distance from one compression to the next compression in a longitudinal wave. (Page 2 Vocabulary)
A.frequency
B.rarefaction
C.amplification
D.wavelength

Answers

Answer:

wavelength

Explanation:

A 100g of sample of a compound is combusted in excess oxygen and the products are 2.492g of CO2 and 0.6495 of H2O. Determine the empirical formula of the compound?

Answers

The empirical formula : C₁₁O₁₄O₃

Further explanation

The assumption of the compound consists of C, H, and O

mass of C in CO₂ =

[tex]\tt \dfrac{12}{44}\times 2.492=0.680~g[/tex]

mass of H in H₂O =

[tex]\tt \dfrac{2.1}{18}\times 0.6495=0.072~g[/tex]

mass of O :

mass sample-(mass C + mass H)

[tex]\tt 1-(0.68+0.072)=0.248`g[/tex]

mol of  C :

[tex]\tt \dfrac{0.68}{12}=0.056[/tex]

mol of H :

[tex]\tt \dfrac{0.072}{1}=0.072[/tex]

mol of O :

[tex]\tt \dfrac{0.248}{16}=0.0155[/tex]

divide by 0.0155(the lowest ratio)

C : H : O ⇒

[tex]\tt \dfrac{0.056}{0.0155}\div \dfrac{0.072}{0.0155}\div \dfrac{0.0155}{0.0155}=3.6\div 4.6\div 1\\\\\dfrac{11}{3}\div \dfrac{14}{3}\div \dfrac{3}{3}=11:14:3[/tex]

The first atomic structure *
Yes
NO

Answers

Answer:

Yes? Sry I’m kinda confused

Explanation:

Sry if I’m wrong

Help plzzzz urgent !!!!!!!!!!!!!!

Answers

Answer: B < C < A

Explanation:

Ok so things that have the lowest pka are the strongest acids. the higher the pka the less acidic it is.

how is oxidation of copper seen on the statue of liberty similar to flammability and how is it different from flammability?

Answers

Answer:

Flammability and oxidation of copper are both chemical properties of a substance.Chemical properties are the properties that tells us how a substance can react with others.Flammability, oxidation of copper, rusting of iron, precipitation e.t.c are chemical properties of a substance.Flammability is one important chemical property of hydrocarbons.Oxidation reaction is peculiar to copper.

Explanation:

Question 12 of 25
Which sentence describes all atoms of one element?
O A. They have the same number of protons.
OB. They have the same number of neutrons.
O C. They have the same number of isotopes.
D. They have the same properties.

Answers

Answer:

D They have the same properties.

Explanation:

The same no. of isotopes doesnot describes because isotopes have same symbol but didderent atomic mass.

Hi I really need help 7th grade science Water gets soaked up by a paper towel because of the property of blank Adhesion Cohesion Deposition Evaporation

Answers

Answer:

Adhesion

Explanation:

Water is soaked up by a paper towel because the forces of adhesion exceeds the forces of cohesion.

The forces of adhesion binds the water molecule to the paper towel while the forces of cohesion binds the water molecules to each other.

Adhesion of water to the walls of the paper exerts an upward force that draws water molecules up the paper.

Hence, the movement of water up a paper towel occurs when the forces of adhesion to the walls of the paper is greater than the forces of cohesion acting between the water molecules.

An example of a decomposer is a:

rabbit
mushroom
tulip

Answers

Answer:

mushroom

Explanation:

is silver tarnishing a physical change or a chemical change?​

Answers

Answer:

chemical

Explanation:

Some bronze objects tarnish to a dark brown color. Chemical properties can be identified by the changes they produce. The change of one substance into another substance is called a A piece of wood burning, an iron fence rusting, and a silver spoon tarnishing are all examples of chemical changes.

Which of the following is not a subatomic particle?
O Electron
O Neutron
O Nucleus
O Proton

Answers

Answer: C) Nucleus

The nucleus is not a subatomic particle, but rather made of the subatomic particles of protons and neutrons. An electron is also a subatomic particle, but it is not found in the nucleus. There are many other subatomic particles, but your teacher probably won't go over those terms until later.

The _____________ is similar to a vacumn cleaner because it cleans up cell waste.

a
endoplasmic reticulum
b
lysosome
c
mitochondria
d
cell wall

Answers

Answer is:
B. Lysosome
B, because the lysosomes used chemicals to break down and worn out cell parts

An atom with which atomic diagram is most similar to calcium?

Answers

Answer:

C

Explanation:

Calcium is an element with a total of 20 electrons.

 It has 4 shells with a configuration of:

          2, 8, 8, 2

Option C is the most similar to calcium but the number of shells is not complete.

It still requires two more shells with 8 and two electrons respectively.

Which of the following is not likely to occur if a city loses its tax base due to economic decline? A. The city will have fewer police and fire fighters. B. City residents will have adequate health care and hospital services. C. The city will have a decline in public housing. D. Public and private buildings will decay.

Answers

Answer:

B.

City residents will have adequate health care and hospital services.

Explanation:

the correct answer for edg 2020

Answer:

B

Explanation:

Describe two physical properties of matter and how those properties are measured.

Answers

Answer:

Density, solubility, melting point, boiling point, polarity, etc.

Density - Mass divided by volume = density (scale and beaker can be used)

Boiling point- Can be determined by the capillary method (where an inverted capillary is put in the liquid you’re finding out for and the liquid is heated)

What is the net force on a car stopped at a stop sign?

Answers

The car has 0 Net Force, for it is at rest and not moving

Imagine you're cooking dinner for a few of your friends. You decide to make a salad with homemade dressing. Why do you need to think about the polarity of the different ingredients in your salad dressing in order for it to turn out well? Answer in 1 to 2 paragraphs. (10 points) Think about how polar molecules only mix with other polar molecules and nonpolar molecules only mix with other nonpolar molecules.

Answers

Answer:15

Explanation:

Help please! Tell me which one goes where.

Answers

Answer:

human-F

chicken-D

rabbit-E

tortoise-C

salamander-B

fish-A

Explanation:

hope this helped!!

I tried my best!!

please mark me as brainliest

HAVE A GREAT DAY <3

Answer:

D Tortoise

B Salamander

A Fish

C Chicken

F Human

E Rabbits

Explanation:

I Really have an Explanation

The Bohr model of the atom suggest that the protons and neutrons are found in the nucleus and the electrons orbit the nucleus much line planets around the sun. How is our modern model of the atom different from this model?

Answers

Answer:

D) The electrons move around the nucleus in an electron cloud

Explanation:

i just did it on usa test prep !

What is the specific heat of a substance that absorbs 2500 joules of heat when a sample of 100g of the substance increases in temperature from 10.°C to 70.°

Answers

Answer:

0.417 J/gºC

Explanation:

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

Heat (Q) absorbed = 2500 J

Mass (M) of substance = 100 g

Initial temperature (T1) = 10 °C

Final temperature (T2) = 70 °C

Specific heat capacity (C) =?

Next, we shall determine the change in temperature (ΔT). This can be obtained as follow:

Initial temperature (T1) = 10 °C

Final temperature (T2) = 70 °C

Change in temperature (ΔT) =?

Change in temperature (ΔT) = T2 – T1

Change in temperature (ΔT) = 70 – 10

Change in temperature (ΔT) = 60 °C

Finally, we shall determine the specific heat capacity of the substance as follow:

Heat (Q) absorbed = 2500 J

Mass (M) of substance = 100 g

Change in temperature (ΔT) = 60 °C

Specific heat capacity (C) =?

Q = MCΔT

2500 = 100 × C × 60

2500 = 6000 × C

Divide both side by 6000

C = 2500 / 6000

C = 0.417 J/gºC

Therefore, the specific heat capacity of substance is 0.417 J/gºC

Fill in the coefficients that will balance the following reaction:

PbI4 +
CrCl3 →
PbCl4 +
CrI3

Answers

the equation balanced is

3 PbI4 + 4 CrCl3 → 3 PbCl4 + 4 CrI3

Answer:

3,4,3,4

Thank me later!

Explanation:

Which metallic crystal structure has a coordination number of 8

Answers

Answer:

body-centered cubic

Explanation:

:D

(10 POINTS PLS ANSWER IF U KNOW)
Is the coloring of the peppered moths an example of competition, differential reproductive success, or inherited variation? Explain why.

Answers

Answer:

Competition

Explanation:

Peppered moths get their color in lieu to become the fittest among all so that they can survive easily. During industrial age, when pollution suddenly became high these moths changed their color through evolution in order to save themselves from their predators.

PLS GIVE BRAINLIEST

An exacuted glass vessel weighs 50 g when empty, 148g when filled with an liquid of density o.989/cc and 50.5 g whenfilled with an ideal gas760 mmHg and at 300k. Determine the molecular weights of gss.​

Answers

MW of gas : 124.12 g/mol

Further explanation  

Density is a quantity derived from the mass and volume  

Density is the ratio of mass per unit volume  

With the same mass, the volume of objects that have a high density will be smaller than objects with a smaller type of density  

The unit of density can be expressed in g/cm³ or kg/m³  

Density formula:  

[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]

ρ = density  

m = mass  

v = volume  

glass vessel wieight = 50 g

glass vessel + liquid = 148 ⇒ liquid = 148 - 50 =98 g

volume of glass vessel :

[tex]\tt V=\dfrac{m}{\rho}=\dfrac{98}{0.989}=99.1~ml[/tex]

An ideal gas :

m = 50.5 - 50 = 0.5 g

P = 760 mmHg = 1 atm

T = 300 K

[tex]\tt PV=\dfrac{mass(m)}{MW}.RT\\\\MW=\dfrac{m.RT}{PV}\\\\Mw=\dfrac{0.5\times 0.082\times 300}{1\times 0.0991}=124.12~g/mol[/tex]

How many atoms of each element are in one molecule of 2-heptanone

Answers

Answer:

A chemical structure of a molecule includes the arrangement of atoms and the chemical bonds that hold the atoms together. The 2-HEPTANONE molecule contains a total of 21 bond(s) There are 7 non-H bond(s), 1 multiple bond(s), 4 rotatable bond(s), 1 double bond(s) and 1 ketone(s) (aliphatic).

Answer:

Explanation:

CH3 provides 1 Carbon

C4 provides 4 carbons

COC provides 2 more

Total 7 Carbons

======================

COCH3 Provides 1 Oxygen

======================

CH3 provides 3 Hydrogens

C4H8 provides 8 hydrogens

COCH3  has 3 more hydrogens

Total 14 hydrogens

The answer should be B.

You should note that there are no brackets which means you only need to read the small numbers going down behind each element. You might have to read that sentence a could of times, but it is important to know.

Explore the Build an Atom simulation. Identify one interesting function, quality, or graphic in the simulation.

Answers

Answer:

- Adding protons changes the identity of the atom, adding one moves from the right to left on the Periodic Table.

Where do convection currents occur?
A.
In areas with the same temperature
B.
In areas with different air pressures
C.
In areas with the same altitude
D.
In areas with different cloud types

Answers

Answer:

a because where the air travels for example a radiator

Answer:

C.

In areas with the same altitude

Explanation:

Please help this is chemistry.

Answers

Answer:

C

Explanation:

the rest are trends except for Electronegativity

when molecules move they react by cooling down.
True or False?

Answers

Answer:

false

Explanation:

when molecules move they heat up

Atoms and ions are all the same.

Answers

Answer:

Yes they are

Explanation:

For this reaction, C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O, the ∆H is –2200 kJ. If two moles of C3H8(g) reacted with excess oxygen, what would be true?
A) 4400 kj of heat released into surroundings
B) 4400 kj of heat absorbed by system
C) 1100 kJ heat released into surroundings
D) 1100 kJ heat absorbed by system

Answers

A) 4400 kj of heat released into surroundings

Further explanation

Reaction

C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O, the ∆H is –2200 kJ

Reaction exothermic( ∆H=-, released heat to surrounding) and for combustion of 1 mole of C3H8

So for two moles of C3H8, the enthalpy :

[tex]\tt -2200\times 2=-4400~kJ[/tex]

Other Questions
What are your thoughts on already being called to lead? As se dicePreferencias, obligaciones e intenciones5-10 Lee el e-mail de Pablo a Elena. Luego, describe sus obligaciones, preferencias e intenciones.I have the correct answers for the 1st one which are 2,5,7. Would someone help with the others? I don't have any correct on the 2nd question. I need to turn it in before midnight EST on 11/23/20Pablo tiene que...1. Entry field with incorrect answerinvestigar para su trabajo escrito.2. Entry field with correct answertrabajar el sbado por la tarde.3. Entry field with incorrect answerir supermercado.4. Entry field with correct answerlimpiar el apartamento. Tiene ganas de...5. Entry field with correct answerjugar al tenis con Javier.6. Entry field with incorrect answerir cine o a una fiesta con algunos de sus amigos.7. Entry field with correct answerdescansar. keisha got up and started yelling at ronnie and and threatening him, but ronnie didn't even flinch because he knew that her bark was worse than her bite. what does "her bark was worse than her bite" mean? A,B,C,D?A - Ronnie thinks that Keisha will get in trouble for yelling.B - Ronnie thinks that Keisha has bad breath.C - Ronnie thinks that Keisha is loud but not dangerous.D - Ronnie thinks that Keisha has a crush on him. if a car has traveled 24km in 2 hours, what is the average speed? 46% of the students that were surveyed like to eat at McDonald's if 351 students do not like to eat at McDonald's how many people were surveyed what did President Diem do? if you were living in paombong, what are the recips that you can produce out of vinegar PLZ HELP!!!Will mark brainliest44. Show that the quadrilateral with vertices A(0,0), B(a,0), C(a + b, c) and D(b, c) is a parallelogram. write a paragraph about 'your dream job - doctor ' Nothing. I just wanna wish everybody a Happy Thanksgiving and I am so thankful that I have this app and that I can help everyone and everyone can help me! 2. Leaves turning brown in the fallChemical or Physical or BothWhat Evidences show that its Chemical, Physical, or Both: please help me with the question. Can you give me some examples please Est ce que quelqu'un pourrait bien corriger mon expression ecrite ou donner son avie dessus s'il vous plait How is energy converted and stored in the process of photosynthesis? What do jazz and mariachi music have in common?They both represent their cultures.They both require an orchestra to perform.They both became popular in the early 1700s.They both depend heavily on electronic instruments. What innovation allowed for skyscrapersto be built during the AmericanIndustrial Revolution?A. stronger wood products based on carpentry techniquesB. stronger steel because of the Bessemer processC, the invention of cement and concreteD. the invention of the steam engine what national identities have made our country known to the world? make a list of any four and explain any two of them Determine whether the following bonds payable will be issued at par value, at a premium, or at a discount. a. Evergreen Company issued bonds payable that pay stated interest of 6 1/4%. On the date of issuance, the market interest rate was 6 3/4%.b. Seven Hills, Inc., issued 3% bonds payable when the market rate was 3 3/4%. c. Flagstaff Corporation issued 5% bonds when the market interest rate was 5%. d. The market interest rate is 4%. Rainforest Corp. issues bonds payable with a stated rate of 5 1/2%. how would you solve p-11=-14