a. 30 moles of H₂O
b. 2.33 moles of N₂
Further explanationGiven
a. 20 moles of NH₃
b. 3.5 moles of O₂
Required
a. moles of H₂O
b. moles of N₂
Solution
Reaction
4NH₃+3O₂⇒2N₂+6H₂O
a. From the equation, mol ratio NH₃ : H₂O = 4 : 6, so mol H₂O :
=6/4 x mol NH₃
= 6/4 x 20 moles
= 30 moles
b. From the equation, mol ratio N₂ : O₂ = 2 : 3, so mol N₂ :
=2/3 x mol O₂
= 2/3 x 3.5 moles
= 2.33 moles
The moles of H₂O produced by 20 moles of NH₃ are 30 moles, moles of N₂ produced by 3.5 moles of O₂ is 2.3 moles.
What is moles?
Moles is a unit of mass, which gives information about the relative amount of species present in any reaction.
Given chemical reaction will be represented as:
4NH₃ + 3O₂ → 2N₂ + 6H₂O
From the stoichiometry of the reaction it is clear that-
4 moles of NH₃ = produce 6 moles of H₂O
20 moles of NH₃ = produce 6/4×20=30 moles of H₂O
Again from the stoichiometry of the reaction it is clear that-
3 moles of O₂ = produce 2 moles of N₂
3.5 moles of O₂ = produce 2/3×3.5=2.3 moles of N₂
Hence required moles are 30 moles of H₂O and 2.3 moles of N₂.
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A gas occupies a volume of 0.20 L at 25 kPa. What volume will the gas occupy at 2.0 kPa?
Answer:
2 L
Explanation:
What is the charge of an atom with 21 protons and 20 electrons?
Answer:
Positive
Explanation:
If an atom has more protons than electrons, its charge with be positive. Protons have a positive charge, and electrons have a negative charge.
2.At 35°C, a small sample of methane gas (CH4) has a volume of 1.5 liters. The temperature of the methane gas is slowly cooled to 17°C. What is the new volume of the methane sample?
Answer:
V₂ = 1.41 L
Explanation:
Given data:
Initial temperature = 35°C (35 +273.15 K = 308.15 K)
Initial volume = 1.5 L
Final temperature = 17°C (17+273.15 K = 290.15 K)
Final volume = ?
Solution:
The given problem will be solve through the Charles Law.
According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.
Mathematical expression:
V₁/T₁ = V₂/T₂
V₁ = Initial volume
T₁ = Initial temperature
V₂ = Final volume
T₂ = Final temperature
Now we will put the values in formula.
V₁/T₁ = V₂/T₂
V₂ = V₁T₂/T₁
V₂ = 1.5 L × 290.15 K / 308.15 k
V₂ = 435.23 L.K / 308.15 k
V₂ = 1.41 L
When the sun shines and heats something, that energy is called-
Answer:
Solar energy.
Answer:
All of the energy from the Sun that reaches the Earth arrives as solar radiation, part of a large collection of energy called the electromagnetic radiation spectrum.
How much current is drawn by a 40-W bulb in a 120-V circuit?
does conduction reflect light?
Answer:
Conduction Should not have anything to do w/ Light.
Explanation:
The reason being is because Conduction is the process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.
please help me please
I think it is A,C,D hope this helps:)
God Bless
What do Oxygen and Hydrogen make?
love duuuh dumm dumm
What volume would be occupied by 2.79 moles of nitrogen gas at STP?
Answer:
22.4
Explanation:
Why do you think Leeuwenhoek was so excited about what he saw?
Answer:
van Leeuwenhoek called the organisms he saw in his microscope "animalcules." also he shined light on specimen so that he could see the right cells
how many formula units are in 0.96 moles of H2O
Answer:
18.02 amu
Explanation:
A car emits 411g of carbon dioxide gas in 1 mile of driving. How many liters of carbon dioxide emit at STP?
The volume of Carbon dioxide at STP = 209.22 L
Further explanationGiven
411g of Carbon dioxide gas
Required
The volume of Carbon dioxide
Solution
mol of Carbon dioxide :
= mass : MW CO₂
= 411 g : 44 g/mol
= 9.34
Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters/mol.
So for 9.34 mol :
= 9.34 x 22.4 L
= 209.22 L
Which factor can increase the potential energy of an object?
Decrease in speed
Decrease in density
Increase in temperature
Increase in height from the ground
Answer:
Increase in height from the ground.
Explanation:
Potential energy =mass×acceleration due to gravity×height.
P.E= mgh
Review the electron configurations of the elements in period 3, from sodium (Na) to argon (Ar). What do you observe?
Answer:
Electronic configuration represents the total number of electrons that a neutral element contains. We add all the superscripts to know the number of electrons in an atom. The electrons are filled according to Afbau's rule in order of increasing energies.
[tex]Na:11:1s^22s^22p^63s^1 [/tex]
[tex]Mg:12:1s^22s^22p^63s^2[/tex]
[tex]Al:13:1s^22s^22p^63s^23p^1 [/tex]
[tex]Si:14:1s^22s^22p^63s^23p^2 [/tex]
[tex]P:15:1s^22s^22p^63s^23p^3 [/tex]
[tex]S:16:1s^22s^22p^63s^23p^4 [/tex]
[tex]Cl:17:1s^22s^22p^63s^23p^5 [/tex]
[tex]Ar:18:1s^22s^22p^63s^23p^6 [/tex]
The last electron enters the third shell in all elements from Sodium to Argon.
Answer: After the 3s sublevel is filled with two electrons, each additional electron goes into the 3p sublevel.
Explanation: plato/ edmentem answer
Can someone plz help me with this science
Answer:
The answer is A.
Explanation:
The answer is A because it is talking about a living organism.
Hope this helps! :)
Lab: Acids and Bases Assignment: Lab Report
What is the purpose of the lab, the importance of the topic, and the question you are trying to answer?
What is your hypothesis (or hypotheses) for this experiment?
What methods are you using to test this (or each) hypothesis?
Section II: Data and Observations
Locate the data and observations collected in your lab guide. What are the key results? How would you best summarize the data to relate your findings?
Do you have quantitative data (numerical results or calculations)? Do you have qualitative data (written observations and descriptions)? How can you organize this date for your report?
Section III: Analysis and Discussion
What do the key results indicate?
If you constructed graphs, what trends do they indicate in your data?
Were there any problems with the experiment or the methods? Did you have any surprising results?
Section IV: Conclusions
What do the results tell you about your hypothesis(es)?
How do the data support your claim above?
If you could repeat the experiment and make it better, what would you do differently and why?
Answer:
Lab: Acids and Bases Assignment: Lab Report
The main point is to help the scientific method and to also see how it works.Sometimes people refer to the tentative answer as "an educated guess." Keep in mind, though, that the hypothesis also has to be testable since the next step is to do an experiment to determine whether or not the hypothesis is right! A hypothesis leads to one or more predictions that can be tested by experimenting.>State the hypotheses. Every hypothesis test requires the analyst to state a null hypothesis and an alternative hypothesis. The hypotheses are stated in such a way that they are mutually exclusive. That is, if one is true, the other must be false; and vice versa.>Formulate an analysis plan. The analysis plan describes how to use sample data to accept or reject the null hypothesis. It should specify the following elements.>Analyze sample data.Using sample data, perform computations called for in the analysis plan.>Interpret the results. If the sample findings are unlikely, given the null hypothesis, the researcher rejects the null hypothesis. Typically, this involves comparing the P-value to the significance level, and rejecting the null hypothesis when the P-value is less than the significance level and etc.Section II: Data and Observations
In a lab guide, the key results are those that support my working hypotheses or serve to reject these assumptions. Moreover, the key results may also be other discoveries that are important to understand the processes and/or mechanisms investigated in the experiment.•?
Section III: Analysis and Discussion
Key Results are the measures and milestones that indicate how you know you will accomplish our Objective.A linear pattern is a continuous decrease or increase in numbers over time. On a graph, this data appears as a straight line angled diagonally up or down (the angle may be steep or shallow). So the trend either can be upward or downward.Yes, i was surprised and learn so much and it was no problem.Section IV: Conclusions
Results will tell you which hypothesis is true.describe specific part of the procedure.If I were able to repeat the lab and do it differently I would try to do two different things to improve it. I would try to create the model in a simpler manner that allowed me to better see how the erosion factored in. I would also try to take more detailed notes on it if I were to repeat it.i hope it's helpAnswer:
anyone know the section II answers for a lab like this but its the thermal energy transfer lab
Explanation:
^^
What would be the new pressure if a gas at 1 atm pressure and 20c was heated to 80c
Answer:I think it’s
Explanation:
190c
Under which conditions will sugar most likely dissolve fastest in a cup of water?
A. A sugar cube with stirring at 5°C
B. A sugar cube without stirring at 15°C
C. Sugar crystals with stirring at 15°C
D. Sugar crystals without stirring at 5°C
Answer:
The correct answer would be C
Explanation:
Plz correct me if wrong
The condition in which sugar is most likely to dissolve fastest in a cup of water is when sugar crystals with stirring at 15°C. Therefore, option C is correct.
What conditions are required for dissolution?Dissolution is the process by which a solute dissolves in a solvent to form a homogeneous mixture called a solution. The conditions required for dissolution are:
Agitation: The solute and solvent must be mixed together so that they come into contact with each other.Temperature: Increasing the temperature of the solvent increases the kinetic energy of its molecules, making it easier for the solute to dissolve.Pressure: Increasing the pressure of a gas above a liquid solvent can force more gas molecules into the solvent, increasing its solubility.Surface area: The rate of dissolution is directly proportional to the surface area of the solute particles exposed to the solvent. Polarity: A solute will dissolve in a solvent that has similar polarity.Thus, option C is correct.
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How does sexual reproduction increase the chance of a population's survival?
A. Offspring are produced in greater numbers
B. Offspring are produced in a shorter amount of time
C. Sexual reproduction produces offspring in both plants and animals
D. Sexual reproduction produces more genetically diverse offsprings
C? i think, the rest just isnt right. i wouldve thought there was an answer that would say "it provides us with more organisms" but the closest one to that is C
Answer:
D
Explanation:
the more genetic variation in a population the better their chances are to survive
Ello fellers
A chemical change is also known as a:
1.endothermic reaction
2.exothermic reaction
3.solution
4.chemical reaction
What does x mean- like person x person?
Answer:
× = and
Explanation:
person and person
What is an oxidation number?
a
The charge acquired by an atom in a chemical bond
b
The number of electrons involved in a chemical bond
c
The number of oxygen atoms an element will bond with
d
The number of oxygen atoms a compound has
Answer:
d
Explanation:
i hope it helps you good luck
The ability of iron to conduct electricity is a physical property of iron. *
True
False
Answer:
True
Explanation:
A physical property is a property that can be measured without changing the chemical composition of the substance.
The chemical composition of iron does not change when it conducts electricity so conductivity is a physical property.
Hope that helps.
Atoms of different element can not have same atomic number because only same type of atoms combine to form element. Atoms belonging to different element can have different atomic number. Therefore, the given statement is true.
What is element?Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same. Two or more than two atoms with different physical or chemical properties can not combine together to form an element.
A physical property is a property that can be measured without changing the chemical composition of the substance. So, ability of iron to conduct electricity is a physical property of iron
Therefore, the given statement is true.
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Which is true of scientific questions?
A. Few scientific questions lead to useful investigations.
B. Scientific questions are answered by doing experiments.
C. Many scientific questions are too complex to be tested.
D. Scientific questions are biased by the opinions of scientists.
what are the 9 properties of minerals and explain each property?
Answer:
hardness-Hardness is the ability of a material to resist deformation
luster-the way light interacts with the surface of a crystal
color-the quality of an object or substance with respect to light reflected by the object
streak- the color of the powder produced when it is dragged across an un-weathered surface.
specif gravity-the density of that object divided by the density of water cleavage -the tendency of a mineral to break along smooth planes
fracture-any separation in a geologic formation
tenacity-refers to a mineral's toughness or resistance to breaking or being deformed.
lol sorry that took awhile
Explain the trend you see in your graph and explain why this occurs at a particle level what is happening when the volume or pressure increases what does the particles do within the sample explain this concept in detail
Answer:
incline
Explanation:
What is a quantum of energy?
Answer:
In chemistry and physics, quantum refers to a single packet of matter or energy. In practical use, it refers to the minimum amount of energy required for a change or the minimum value of any physical property in an interaction. Quantum is the singular form of the word. Quanta is the plural form of the term.
Explanation:
Answer:
quantum of energy
Explanation:
The term quantum of energy means that the energy is not transferred continuously but as discrete packets of energy. Amount of energy required to move an electron from one energy level to another. The amount of energy an electron gains or loses is. Not always the same. The higher energy levels are.
hope it helps!
How are the electron structures of boron (B) and aluminum (Al) similar?
A. They both have valence electrons in the second energy level.
B. They both have 3 electrons in each sublevel.
C. They both have 1 electron in a p orbital.
D. The highest sublevel that has electrons is the 3p sublevel.
my brain isn't functioning correctly. 2 days up working on homework lol
Answer:
C: They both have 1 electron in a p orbital.
Explanation:
Find the electron configuration of B
Boron is 1s 2s2 2p1
Find the electron configuration of Al
Aluminum is 1s2 2s2 2p6 3s2 2p1
If you look at the p orbital, they both have 1 electron.
Therefore, the correct answer is C.
Hope it helped!
An atom has 25 protons, 30 neutrons, and 25 electrons. What is the charge of the
atom's nucleus?
F +25
G +30
H -25
J -30
Which statement defines the heat capacity of a sample?
the temperature of a given substance
the temperature that a given sample can withstand
the quantity of heat that is required to raise the sample’s temperature by 1°C (or Kelvin)
the quantity of heat that is required to raise 1 g of the sample by 1°C (or Kelvin) at a given pressure
Answer:
b
Explanation:
Answer:
D. the quantity of heat that is required to raise 1 g of the sample by 1°C (or Kelvin) at a given pressure
Explanation:
