Answers
Answer:
0.21 mole of C8H18.
Explanation:
We'll begin by writing the balanced equation for the reaction. This is given below:
2C8H18 + 25O2 —> 16CO2 + 18H2O
Next, we shall determine the number of mole of C8H18 that reacted and the number of mole water (H2O) produced from the balanced equation.
This is illustrated below:
From the balanced equation above,
2 moles of C8H18 reacted to produce 18 moles of H2O.
Finally, we shall determine the number of mole C8H18 needed to produce 1.90 moles of H2O.
This can be obtained as follow:
From the balanced equation above,
2 moles of C8H18 reacted to produce 18 moles of H2O.
Therefore, Xmol of C8H18 will react to produce 1.90 moles of H2O i.e
Xmol of C8H18 = (2 × 1.90)/18
Xmol of C8H18 = 0.21 mole
Thus, 0.21 mole of C8H18 is needed for the reaction.
Related Questions
Which action will decrease the gravitational force between two objects?
A. Adding mass to one of the objects
B. Increasing the charge on one of the objects
C. Reducing the masses of the objects
D. Moving the objects closer together
Answers
Answer: C
Explanation:
The force of gravity is proportional to the amount of mass in the system, and is inversely proportional to the separation distance between the two masses.
Adding mass to one of the objects would increase the gravitational field it produces, which in return increases the force of gravity.
Increasing the charge of one of the objects would technically add mass to the system, but it can be considered negligible. The adding of charge would cause an attraction between the two objects, but that is not the gravitational force. It is the Coulomb force.
Reducing the mass of one of the objects would decrease the gravitational field it produces, which would cause the force of gravity to decrease. This is the answer.
Moving the objects closer would cause the denominator of the force equation to decrease. A smaller denominator would cause the equality to increase, aka the gravitational force.
[tex]F=GMm/r^2[/tex]
Describe the structure of an Atom (HELP!)
Answers
Answer:
The answer is A.
Explanation:
Neutrons and protons are located in the dense middle of the atom called the nucleus, and electrons are located on the electron cloud located outside of the nucleus.
The synthesis of carbohydrates can be particularly difficult because of the large number of chiral centers and OH functional groups present.
a. True
b. False
Answers
a. True
b. False
Calculate the wavelengths (in Å) for the first six Balmer lines (Ha, Hb, Hg, Hd, He, and Hz)
Answers
Explanation:
Transition of n 3→2 6→2
Name -H-α / Ba-α- H-δ- / Ba-δ
Wavelength (nm, air) -656.279 -410.1734
Energy difference (eV)- 1.89 -3.03
Color- Red -Violet
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Why critical thinking is important for chemists?
Answers
Answer:
"Critical thinking is the analysis of available facts, evidence, observations, and arguments to form a judgment. The subject is complex; several different definitions exist, which generally include the rational, skeptical, and unbiased analysis or evaluation of factual evidence. Critical thinking is self-directed, self-disciplined, self-monitored, and self-corrective thinking. It presupposes assent to rigorous standards of excellence and mindful command of their use. It entails effective communication and problem-solving abilities as well as a commitment to overcome native egocentrism and sociocentrism." - Searched it up on Wiki, so at least I stated this-.
I hope this helps..?
Answer:
Critical thinking in the area of chemistry requires students to not just think about the concepts and principles of but also how they can be applied to other areas. Critical thinking creates an area of overlapping or related information to the nature of a certain function.
Explanation:
its simple plus hope this helps
What is neutron?
What is Atom?
Answers
Answer:
A neutron is a subatomic particle with no charge and is found in the nucleus of an atom.
An atom is the smallest particle of an element that retains its identity in a chemical reaction.
Explanation:
hope this helps!! p.s. i really need brainliest :)
Answer:
See below.
Explanation:
Neutron is a subatomic particle which has a neutral charge and forms the nucleus of the atom.
Atom is the smallest unit of matter which composes solids, liquids, gases, and plasma.
what is the force needed to accelerate a sled with a mass of 2 kg at a rate of 3.0/s²
A. 6.0N
B. 3.0N
C. 1.5N
D. 3.0N
(help asap please I will give brainliest to the correct answer )
Answers
Answer:
The answer is option AExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
Force = mass × accelerationFrom the question
mass = 2 kg
acceleration = 3 m/s²
We have
Force = 2 × 3
We have the final answer as
6.0 NHope this helps you
How many atoms are in 3.5 L of Neon at STP? Show your work
Answers
Answer:
0.1734
this is the answer to the question
5. When 8.00 g of Pb(C2H3O2)2 * xH2O are heated, 1.14 g of H2O are driven off. Find the chemical formula and the name of the hydrate
Answers
Answer:
Please look in the paper ! <3
Which of the following is true of a compound but not a mixture? (1) A compound contains more than one element.
(2) All the nuclei in a compound contain the same number of protons.
(3) A compound may be heterogeneous.
(4) The composition of a compound does not vary
Answers
The composition of a compound does not vary because it is made up of fix ratio by mass.
What is compound?A compound is a chemical substance that is composed of more than one element that held together by chemical bonds and produces fix ratio by mass so we can conclude that the composition of a compound does not vary because it is made up of fix ratio by mass.
Learn more about compound here: https://brainly.com/question/634206
What would happen if organ system failed to work together
Answers
Answer:
if organ systems failed to work together then the body will not function properly and we should not able to do a simple work and suffer from many others diseases.
When fluids are subjected to increases in pressure they tend to do this.
A.) evaporate
B.) contract
C.) expand
D.) solidify
Answers
Answer:
D.) solidify
Explanation:
Calcium and water are the reactants in this chemical reaction. The products are calcium hydroxide and hydrogen gas. Which statement correctly describes the total mass of the products when the reaction is complete?
Answers
Explanation:
Using the Law of Conservation of mass,the mass of the reactants should be equal to the mass of the products after the reaction.
Think of a substance that does not dissolve in water. Explain what happens when this substance is added to water.
Answers
An example would be oil. Oil is considered to be hydrophobic (which translates to "fear of water" so it is repelled by water). It floats on the top of water, which is why oil spills result in black blobs that float on the surface of the ocean rather than mix underneath the surface.
A photon has a wavelength of 220 nm. How much energy does the
photon have?
Answers
Answer:
The energy of a photon with a wavelength of 350 nm is 5.7×10−19 J .12/05/2
Explanation:
1.is the light from the christmas tree natural or artificial?
Answers
What type of energy is transferred during heating?
A. Thermal
B. Temperate
C. Convective
D. Conductive
Thank u for helping !:)
Answers
Answer:
A.) Thermal
Explanation:
I got it correct on founders edtell
Gold can undergo transmutation. Which equation could correctly describe this radioactive decay?
Superscript 185 Subscript 79 Baseline Upper A u right arrow Superscript 181 Subscript 77 Baseline Upper Re + Superscript 4 Subscript 2 Baseline Upper H e
Superscript 185 Subscript 79 Baseline Upper A u right arrow Superscript 181 Subscript 77 Baseline Upper I r + Superscript 4 Subscript 2 Baseline Upper H e
Superscript 185 Subscript 79 Baseline Upper A u right arrow Superscript 181 Subscript 77 Baseline Upper I r + Superscript 0 Subscript negative 1 Baseline e
Superscript 185 Subscript 79 Baseline Upper A u right arrow Superscript 181 Subscript 77 Baseline Upper I r + Superscript 0 Subscript positive 1 Baseline e
um B is the answer on the unit test
Answers
Answer:
Superscript 185 Subscript 79 Baseline Upper A u right arrow Superscript 181 Subscript 77 Baseline Upper I r + Superscript 0 Subscript positive 1 Baseline e
Answer: the answer is B
Explanation:
just took the assignment
In the diagram below, west is to the left, east is to the right, and the observer is looking toward the north. What is the direction of the wind?
A. NE
B. NW
C. SE
D. SW
Answers
the ion with a 3+ charge, 28 electrons, and a mass number of 71
Answers
How does latitude
affect climate?
Answers
Answer:
as the latitude increases, the intensity of the solar energy that strikes an area decreases,and climates become cooler
Explanation:
The higher the elevation the cooler the air therefore the climate becomes colder.
Stoichiometry: mole/ mole help
Answers
Answer:
0.531 moles of CO₂ are formed.
Explanation:
Given data:
Number of moles of CO = 0.531 mol
Number of moles of CO₂ formed = ?
Amount of oxygen = excess
Solution:
Chemical equation:
2CO + O₂ → 2CO₂
Now we will compare the moles of CO with CO₂.
CO : CO₂
2 : 2
0.531 : 0.531
Thus, 0.531 moles of CO₂ are formed.
8. A fossil plant that helps support the theory of continental drift is ____.
a. Mesosaurus
b. Glossopteris
c. Glomar
d. Pangaea
Answers
Answer:
b.
Explanation:
1. Given the image below, which calculation will NOT give you the correct average atomic mass?
A. (12+12+12+12+12+12+13+13+13+13)
10
B. (60⋅12)+(40⋅13)
C. (0.6⋅12)+(0.4⋅13)
D.
Answers
Answer: I think it’s either C or Dz
Explanation:
Due how it’s calculated.
The calculation that will not give the correct average atomic mass is (60⋅12)+(40⋅13).
The average atomic mass is obtained as the sum of the products of the relative abundance of each isotope multiplied by its mass.
There are 6 C-12 isotopes and 4 C-13 isotopes. This gives a total of 10 isotopes of both types.
All calculations of average atomic mass are correct except (60⋅12)+(40⋅13).
Learn more: https://brainly.com/question/13292428
Which of these characteristics differentiate electrons from protons and neutrons
Answers
A homogeneous mixture is a solid, liquid, or gaseous mixture that has the same proportions of its components.
a. True
b. False
Answers
Answer:
true
Explanation:
It is because it appears uniformly in the eye
What information does an acid or base equilibrium constant give?
Answers
The value of the equilibrium constant shows the relative amounts or concentrations of the reactants and products.
What is the missing force?
Answers
Answer:
The missing force is the 17 newton
Explanation:
Is there a relationship between low-income neighborhoods and obesity? What do you think are some of the reasons?
Answers
Answer:
cheaper foods are usually more processed and unhealthy, therefore, poorer people are likelier to be obese.
Explanation:
Which of the following helps protect species from extinction?
Question 4 options:
laws and policies
wildlife refuges
conservation efforts
all of the above
Answers
Answer:
all of the above :)
have a nice day !
Explanation: