Answer:
4.20 atm
Explanation:
PV = nRT
convert the temperature from Celsius to Kelvin:
T(K) = T(C) + 273.15
T(K) = 17 + 273.15
T(K) = 290.15 K
plug in the values:
n = 0.4 moles
V = 7.0 L
R = 0.08206 L atm / (mol K) (Gas constant)
T = 290.15 K
PV = nRT
P = nRT / V
P = (0.4 moles) x (0.08206 L atm / (mol K)) x (290.15 K) / (7.0 L)
P = 4.20 atm (rounded to two significant figures)
Therefore, the pressure of the gas is 4.20 atm.
Deposition is a process that… A: moves rock particles. B: drops sediment. C: breaks down rock. D: dissolves sediment
Answer:
cbbb vdf jfjd hx
Explanation:
HELP ME PLEASE
Which of the following best explains why ice help keep aquatic animal alive in the winters?
Responses
Because water temporarily freezes the fish and actually extends their life span.
Because frozen water is less dense than liquid water and therefore floats in liquid water.
Because water contains hydrogen and oxygen and those two elements are important elements for life.
Because the frozen water is more dense than liquid water and therefore floats in liquid water
Answer: Because frozen water is less dense than liquid water and therefore floats in liquid water.
A 25.1 L sample of a gas is held at 6.9 atm and 133 C. How many moles of gas are in the
sample?
we can use the ideal gas law, which relates the pressure (P), volume (V), temperature (T), and number of moles (n) of a gas. There are 2.32 moles of gas in the sample.
How to calculate no. of moles in the given sample?
To find the number of moles of gas in the sample, we can use the ideal gas law, which relates the pressure (P), volume (V), temperature (T), and number of moles (n) of a gas:
PV = nRT
where R is the gas constant. We can rearrange this equation to solve for n:
n = PV/RT
where P is the pressure in atmospheres, V is the volume in liters, T is the temperature in Kelvin, and R is the gas constant (0.08206 L atm/(mol K)).
First, we need to convert the temperature from Celsius to Kelvin by adding 273.15:
T = 133 C + 273.15 = 406.15 K
Then, we can plug in the given values:
n = (6.9 atm)(25.1 L)/(0.08206 L atm/(mol K))(406.15 K)
n = 2.32 moles
Therefore, there are 2.32 moles of gas in the sample.
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What is the correct answer help
The bond is a double covalent bond
What type of Bond is in N2 molecule?
The bond in the N2 molecule is a double covalent bond. In a covalent bond, atoms share electrons to fill their outermost valence shells and achieve greater stability.
In the case of the N2 molecule, each nitrogen atom has five valence electrons, and they share three electrons with each other to form a triple covalent bond. This results in a stable N2 molecule, with each nitrogen atom having a full outer shell of eight electrons.
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How much water, in grams, can be made from 8.73 × 10^24 hydrogen molecules?
Explanation:
Refer to pic..........
A solution is prepared by adding 750.0 mL of 4.00 x 10^-33 M Ce(NO3)3 to 300.0 mL of 2.00 x 10^-2 M KIO3. Will Ce(IO3)3 (Ksp = 1.9 × 10^-10) precipitate from this solution?
Ce(IO3)3 will not precipitate from the solution.
Solution explained.
To determine if Ce(IO3)3 will precipitate from the solution, we need to calculate the concentration of Ce3+ and IO3- ions in the solution, and then use the solubility product constant (Ksp) to determine if a precipitate will form.
First, let's calculate the number of moles of Ce(NO3)3 added to the solution:
nCe(NO3)3 = (750.0 mL) (4.00 x 10^-33 mol/L) = 3.00 x 10^-30 mol Ce(NO3)3
Next, let's calculate the number of moles of KIO3 in the solution:
nKIO3 = (300.0 mL) (2.00 x 10^-2 mol/L) = 6.00 x 10^-3 mol KIO3
Since KIO3 is a strong electrolyte, it will dissociate completely in solution, giving us the same number of moles of IO3- ions:
nIO3- = 6.00 x 10^-3 mol
Since Ce(NO3)3 is also a strong electrolyte, it will dissociate completely to give us 3 times the number of moles of Ce3+ ions:
nCe3+ = 3.00 x 10^-30 mol x 3 = 9.00 x 10^-30 mol
Now, let's calculate the concentration of Ce3+ ions:
[Ce3+] = (9.00 x 10^-30 mol) / (1050.0 mL) = 8.57 x 10^-34 M
Finally, we can calculate the ion product (IP) of Ce(IO3)3:
IP = [Ce3+] [IO3-]^3 = (8.57 x 10^-34)^1 (6.00 x 10^-3)^3 = 7.34 x 10^-41
Comparing this value to the Ksp of Ce(IO3)3 (1.9 × 10^-10), we see that IP << Ksp.
Therefore, Ce(IO3)3 will not precipitate from the solution, and the solution will remain homogeneous.
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2. When a bubble escapes form a sunken ship, it has a volume of 12.0ml at a pressure of 400.0 atm. and a temp.. of -3.00°C. It reaches the surface where the pressure is 1.10 atm. and the temperature is 27.0°C. What is its new volume? ( round the answer to nearest tens for sig figs)
Answer: 4848.22 mL
Explanation:
V2= P1V1T2/(T1 P2) = (400.00 X 12.0 X 300.15)/(270.15 x 1.10)
Which orbitals can overlap to form a pi bond?
Answer:
Explanation:
In addition, use Form 1099-MISC to report that you made direct sales of at least $5,000 of consumer products to a buyer for resale anywhere other than a permanent retail establishment.
Answer:
Pi bonds are formed from the overlap of parallel p orbitals on adjacent atoms. They are not formed from hybrid orbitals.
__C2H5OH + __O2 -> __CO2 + H2O Balance the Equation
Answer: C2H5OH + 3O2-------=2CO2 + 3H2O
Explanation:
What is the molarity of ZnCl2 that forms when 20.0 g of zinc completely reacts with CuCl2 according to the following reaction? Assume a final volume of 285 mL . Zn(s)+CuCl2(aq)→ZnCl2(aq)+Cu(s)
Its molarity of [tex]ZnCl_{2}[/tex] produced by the full reaction of 20.0 g of zinc with [tex]CuCl_{2}[/tex] is 1.364 M.
What in chemistry is molarity?The proportion of solute moles to solution length is known as molarity. By dividing the number of moles of HCl but by amount (L) of the fluid where it had been dissolved, we may get the acid solution's molarity.
Molarity of product Zinc Chloride which is formed when 25.0 g of Zinc completely reacts with copper(II) chloride:
[tex]ZN(s) + CuCl_{2} (aq)[/tex] → [tex]ZnCl _{2} (aq) + Cu(s)[/tex]
Firstly no of moles of Zn can be obtained from :
[tex]Moles of Zn = \frac{Mass of Zn }{ Molar mass of Zn}[/tex], molar mass of Zn = 65.38 g/mol
hence moles of Zn = 25.0 g / 65.38 g/mol = 0.382 mol.
Now some conversion are needed to be done like:
1 m L = 0.001 L
Volume of solution = 285 mL
Hence 285 mL = 285 × 0.001 L = 0.28 L
Finally Molarity of [tex]ZnCl_{2}[/tex] can be calculated by:
Molarity of [tex]ZnCl_{2}[/tex] = [tex]\frac{number of moles of solute }{volume of solution in litres}[/tex]
Molarity = [tex]\frac{0.382mol}{0.28L}[/tex]
= 1.364 M.
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In the spring, Florida plants respond to ________.
increased daylight hours and temperature
decreased daylight hours and temperature
increased daylight hours and decreased temperatures
decreased daylight hours and increased temperatures
The answer is (A), Greater growth and activity are seen in plants during Florida's spring season, which is mainly caused by a combination of two environmental factors: longer daylight hours and warmer temperatures.
What kinds of flora can you find in Florida?The Atlas of Florida Vascular Plants estimates that Florida is home to more than 4,200 plant varieties that are not grown in cultivation. Nearly 3,000 of those 4,200 species are regarded as local. The bulk of plants are terrestrial, or land-based.
What blossom is unique to Florida?One of the cheeriest plants you can cultivate in your garden is the coreopsis, the official state flower of Florida. However, plant breeders have been hard at work and you can now find choices with single or double flowers, or blooms in hues of gold, yellow, and even orange, red, and pink.
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MgCl2 is electrolyzed to produce Mg and Cl2. 1311 g of MgCl2 decomposed, what is the percent yield for this reaction if 246.43 g of magnesium are recovered ?
PLEASE HELP
***write a balanced equation
The percent yield for this reaction is 147.2%.
What is a good percentage yield?
A good percentage yield depends on the specific reaction and the conditions under which it is performed. In general, a high percentage yield (e.g. 90% or higher) is desirable, as it indicates that the reaction is efficient and that little of the starting material was wasted. However, a 100% yield is often not possible in practice due to factors such as incomplete reactions, impurities in the reactants, and loss of product during isolation and purification.
The balanced equation for the electrolysis of MgCl2 is:
2 MgCl2(l) → 2 Mg(l) + Cl2(g)
To calculate the percent yield, we need to first find the theoretical yield of magnesium. This can be calculated using stoichiometry and the given amount of MgCl2:
Molar mass of MgCl2 = 95.211 g/mol
Moles of MgCl2 = 1311 g / 95.211 g/mol = 13.77 mol
From the balanced equation, 2 moles of Mg are produced for every 2 moles of MgCl2.
Therefore, moles of Mg produced = 13.77 mol / 2 = 6.885 mol
Theoretical yield of Mg = 6.885 mol x 24.305 g/mol = 167.38 g
Now we can calculate the percent yield using the actual yield of Mg:
Percent yield = (Actual yield / Theoretical yield) x 100%
Percent yield = (246.43 g / 167.38 g) x 100% = 147.2%
Therefore, the percent yield for this reaction is 147.2%.
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Organisms need certain types of nutrients for growth, repair, and other life processes. You get these nutrients from the foods you eat. Please list the three nutrients needed and provide at least one food source where you can find each nutrient.
sciences
Answer:
The three nutrients needed for growth, repair, and other life processes are:
Proteins: Proteins are important for building and repairing tissues in the body, as well as for producing enzymes and hormones. Good food sources of protein include chicken, fish, eggs, beans, lentils, nuts, and seeds.
Carbohydrates: Carbohydrates are the primary source of energy for the body. Good food sources of carbohydrates include whole grains, fruits, vegetables, and legumes.
Fats: Fats are important for insulation, protection, and energy storage in the body. Good food sources of healthy fats include avocados, nuts, seeds, olive oil, and fatty fish such as salmon.
Explanation:
Identify the Lewis base in this balanced equation:
A Lewis base compound has a pair of electrons that are 'donated' to an electron-acceptor forming a covalent bond. A Lewis Base will have lone-pair electrons. All anions are Lewis Bases considering they donate electrons.
Is NH3 a Lewis base?Image result for Identify the Lewis base in this balanced equation: Identify the Lewis base in this balanced equation: - 1
The lone pair on the nitrogen atom is transferred to the hydrogen ion, making the NH3 a Lewis base while the H+ is a Lewis acid.
Is BF3 a Lewis base?Image end result for Identify the Lewis base in this balanced equation: Identify the Lewis base in this balanced equation: - 1
BF3 is a Lewis acid, but be aware it has no H to donate, it represents a new type of acids.
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Answer:NH3
Just know I got it wrong so you can get it right
Which of the following is NOT a safety precaution for handling radioactive material?
A. Store radioactive material in a shielded container.
B. Remove all metal before entering the containment room.
C. Use tongs or robotic arms to handle materials.
D. Monitor exposure with a film dose bandage.
The option which is not a safety precaution for handling Radioactive material is option B. Remove all metal before entering the containment room.
Radioactive substances are those which have an unstable nucleus. They achieve stability by emitting radiations like alpha particles, beta particles and gamma rays.
Working or experimenting on such substances can pose serious health risks like cancer, cardiovascular diseases etc.
Therefore following strict safety precautions while handling radioactive material is mandatory.
Certain safety measure could include
1) Protect the skin from radiation exposure by using film bandages.
2) When the radioactive sample is not in use, store them in a shielded container right away.
3) Always use gloves, tongs or remote operated robotic arms to handle the samples.
4) Do not eat, drink, smoke, or apply cosmetics in the laboratory.
5) Wear disposable clothes to reduce the risk of contamination from the samples.
Therefore, The option which is not a safety precaution for handling Radioactive material is option B. Remove all metal before entering the containment room.
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Question 3 (1 point) The diagram on the below shows water molecules and ions from an NaCl crystal. What is the most likely reason that each water molecule is arranged so that the oxygen part of the molecule faces a sodium ion?
Answer:
There is attraction between oxygen atom and sodium ion due to their significant electonegative difference so therefore they face each other........
Which part of this system is most greatly impacted when human activities release excessive amounts of carbon dioxide and other greenhouse gases into the atmosphere?
When human activities release excessive amounts of carbon dioxide and other greenhouse gases into the atmosphere, then atmosphere is most greatly impacted.
What are greenhouse gases?Greenhouse gases are gases the in the atmosphere of Earth that trap heat.
The greenhouse gases trap heat in the atmosphere and contribute to the phenomenon of global warming, which has numerous negative effects on the climate and environment.
Excessive greenhouse gas emissions can cause rising global temperatures, more frequent and severe weather events, sea level rise, ocean acidification, and other environmental changes that have significant impacts on ecosystems, agriculture and human societies. Therefore, it is important to reduce greenhouse gas emissions to mitigate the impacts of the climate change.
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PLS HELP! ILL MARK BRAINLIEST
1,6,4 coefficients ensure that there are equal numbers of atoms of each element on both sides of the equation. So correct option is A.
Describe Chemical Equation?A chemical equation is a symbolic representation of a chemical reaction, which shows the reactants, products, and their relative amounts. It is a shorthand way of describing a chemical reaction using chemical symbols and formulas.
A chemical equation consists of two sides, the reactant side and the product side, separated by an arrow, which represents the direction of the reaction. The reactant side lists the starting materials or reactants, while the product side lists the substances that are formed as a result of the reaction.
The balanced chemical equation for the reaction is:
P4O10 + 6 H2O → 4 H3PO4
The correct set of coefficients to balance the equation is:
A. 1,6,4
These coefficients ensure that there are equal numbers of atoms of each element on both sides of the equation.
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Does someone know the answer to this?
(This is middle school science)
Radioactive dating measures the ratio of C¹²(normal) and C¹⁴ (radioactive) in fossils to determine the exact age of the specimen. C¹⁴ is unstable and has a half life of 5730 years.
What are the ages of organism?The organism ages the amount of C¹⁴ diminishes but the amount of C¹² remains constant. The ratio of C¹⁴ to C¹² is used to analyze the decay of atomic particles to determine exact age.
Relative dating uses rock layers and index fossils to determine an object's estimated age. Relative dating is a method of dating archaeological structures or discoveries based on how they are temporally or formally compared to others. This is in contrast to absolute dating, where the material itself dates.
Therefore, Relative dating can be done by stratigraphic dating, typology or climatic dating.
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you have 5L of a stock solution of 6M AgNO3, you need a 3M AgNO3 strength solution for a lab assignment. What volume of 3M could you make from the stock solution.
The volume of 3M from making stock solution is 7.5 liters.
To make a 3M solution from a 6M stock solution of AgNO3, we need to add water to the stock solution. Let us assume x liters of 3M solution from 5 liters of the 6M stock solution.
The amount of AgNO3 in the 5 liters of the stock solution is:
5 L * 6 mol/L = 30 mol AgNO3
To make a 3M solution, we need:
3 mol/L * x L = 3x mol AgNO3
We can use the formula:
C1V1 = C2V2
where,
C1 = concentration of the stock solution
C2 = concentration of the final solution
V1 = volume of stock solution
V2 = volume of the final solution
In this case, we know that:
C1 = 6 M
C2 = 3 M
V1 = x
V2 = 5 L + x
In this case, we know that:
C1 = 6 M
C2 = 3 M
V1 = x
V2 = 5 L + x
let us substitute the above values in the formula
6 M * V1 = 3 M * (5 L + x)
Solving for x, we get:
x = 2.5 L
Therefore, to make a 3M solution from a 6M stock solution, a final volume of 5 + 2.5 = 7.5 liters to get a 3M solution.
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How are cellular respiration and photosynthesis related?
A.
They both use ATP energy to produce radiant energy.
B.
They both use light energy to produce chemical energy.
C.
All of their chemical products are gases found in the atmosphere.
D.
The chemical products of one are the reactants of the other.
Answer:
I'm pretty sure its A
Explanation:
I hope this helps
At what temperature will 65 g of Neon gas (Ne) occupy 12.30 liters at 1256 torr?
Explain the process.
Answer:
T
=
447
K
≈
174
∘
C
.
Explanation:
This is what we're given:
P
(pressure), which is
1.95 atm
.
V
(volume), which is
12.30 L
.
n
(number of moles), which is
0.654
moles of neon gas.
We have to find
T
, or temperature. To do this, we'll need to use the Ideal Gas Law, which is:
P
V
=
n
R
T
Rearranging this equation to get temperature on one side, we get:
T
=
P
V
n
R
Pressure is in
a
t
m
and volume is in
L
. This tells us that we'll need to use the value of
0.08206 L atm/K mol
for
R
, the ideal gas constant.
Plugging in all of the values, we can solve for temperature:
T
=
p
V
n
R
T
=
1.95
atm
×
12.30
L
0.654
mol
×
0.08206
L
atm
K
−
1
mol
T
=
447
K
We can then convert to celsius, which equals to around
174
∘
C
.
Answer link
Explanation:
Helpppp
Present Your Findings
When you are finished with the experiment, complete the following data analysis and record your answers in the Essay box below.
Determine the volume of the box and the block.
Determine the ratio of the block to the box:
Multiply this number by 100 to turn it into a percent.
Complete this statement: The volume of the block is _____ percent of the volume of the box.
Determine the ratio of the number of hits to the number of shots:
Multiply this number by 100 to turn it into a percent.
Complete this statement: The block was hit _____ percent of the time.
Compare the results of step 2 to the results of step 3. Are the percentages similar?
Write a conclusion discussing the following items:
Based on your findings, do you think Rutherford's hypothesis was reasonable?
Restate Rutherford's hypothesis and describe how you tested it.
State whether your results support the hypothesis. If they do not, can you suggest some error in experimental procedure (other than general human error) that might explain it?
Finally, explain how this experiment confirms the nuclear model of the atom and the idea that most of the atom is empty space.
An hypothetical scenario is going to be used for this experiment.
Hypothetical Scenario:
The experiment aimed to test the effectiveness of different types of basketballs on shooting accuracy. Three test groups were created: one group was given a standard rubber basketball, another group was given a leather basketball, and the third group was given a synthetic basketball. Ten shots were taken with each ball and the number of hits were recorded.
Data Analysis:
The volume of the box was 50 cubic feet and the volume of the block was 5 cubic feet.The ratio of the block to the box was 1:10.The volume of the block is 10% of the volume of the box.The ratio of the number of hits to the number of shots was as follows: rubber ball - 7/10, leather ball - 8/10, synthetic ball - 6/10.The rubber ball was hit 70% of the time, the leather ball was hit 80% of the time, and the synthetic ball was hit 60% of the time.The percentage of the block to the box and the percentage of hits for each ball were not related.What is the conclusion?Conclusion:
Based on the findings, Rutherford's hypothesis was reasonable.
Rutherford's hypothesis was that atoms have a small, dense, positively charged nucleus and the rest of the atom is empty space where negatively charged electrons orbit. This hypothesis was tested by firing alpha particles at a thin gold foil and observing the deflection of the particles. The results of the experiment showed that most alpha particles passed through the gold foil, but a small percentage were deflected at large angles, suggesting the presence of a small, positively charged nucleus in the atom.Therefore, the results of the basketball experiment do not relate to Rutherford's hypothesis.
The experiment confirms the nuclear model of the atom and the idea that most of the atom is empty space because the majority of the alpha particles passed through the gold foil without any deflection, which implies that the atom is mostly empty space. The deflection of some particles suggested the presence of a small, positively charged nucleus, which supports the nuclear model of the atom.Learn more about volume on:
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As each successive member of the alkene series is considered, the ratio of carbon atoms to hydrogen atoms
A) decreases
B) increases
C) remains the same
Answer:
B) increases
Explanation:
Floods can drastically change the land in an area due to
Explanation:
Floods can drastically change the land in an area due to what is known as erosion. Erosion is the process of water carrying away small pieces of rock and soil. Over time, this can lead to large changes in the landscape. Floods can also deposit sediment, which can change the land in a different way. Deposition is the process of sediment being left behind by water. This can cause the land to become higher in some areas and lower in others.
3. If excess ammonium sulfate reacts with 35.0 grams of calcium hydroxide, how many grams of ammonia are produced?
Taking into account the reaction stoichiometry, 33.108 grams of NH₄HO are formed if excess ammonium sulfate reacts with 35.0 grams of calcium hydroxide.
Reaction stoichiometryIn first place, the balanced reaction is:
(NH₄)₂SO₄ + Ca(OH)₂ → CaSO₄ + 2 NH₄HO
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amount of moles of each compound participate in the reaction:
(NH₄)₂SO₄: 1 moleCa(OH)₂: 1 moleCaSO₄: 1 moleNH₄HO: 2 molesThe molar mass of the compounds is:
(NH₄)₂SO₄: 132 g/moleCa(OH)₂: 74 g/moleCaSO₄: 136 g/moleNH₄HO: 35 g/moleBy reaction stoichiometry, the following mass quantities of each compound participate in the reaction:
(NH₄)₂SO₄: 1 mole ×132 g/mole= 132 gramsCa(OH)₂: 1 mole ×74 g/mole= 74 gramsCaSO₄: 1 mole ×136 g/mole= 136 gramsNH₄HO: 2 mole ×35 g/mole= 70 gramsMass of N₂O formedThe following rule of three can be applied: if by reaction stoichiometry 74 grams of Ca(OH)₂ form 70 grams of NH₄HO, 35 grams of Ca(OH)₂ form how much mass of NH₄HO?
mass of NH₄HO= (35 grams of Ca(OH)₂ ×70 grams of NH₄HO) ÷74 grams of Ca(OH)₂
mass of NH₄HO= 33.108 grams
Finally, 33.108 grams of NH₄HO are formed.
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Jana is a scientist and is designing a portable water warmer that can help her warm up her samples while away from the lab. The device will store two chemicals separately. When she wants to warm up water, she will activate the device, which will mix the chemicals together to generate energy in the form of heat. The heat will increase the temperature of a third part of the device, which is filled with water. Jana wants to find the best amount of two chemicals that will generate energy in a safe and portable way. She mixes copper sulphate and zinc in a beaker and records her observations in the table.
Jana needs her device to be able to warm water to temperatures between 70 °C and 100 °C. She tests the device using different amounts of copper sulfate and zinc and records the resulting water temperature at different time intervals.
The table shows the amount of zinc and copper sulfate that were used for each trial. The graph shows the data she collected on the temperature of the water.
⦁ Determine the type of reaction that took place in the beaker. Justify your answer using evidence from the graph.
⦁ Interpret the factors that affected the water temperature. List at least 2 factors.
⦁ How could Jana modify her design to meet the temperature constraints? Provide at least 3 ideas.
⦁ Is this copper sulfate and zinc reaction balanced? Justify your answer.
CuSO4 (aq) + H2O (aq) + Zn(s) Cu(s) + ZnSO4(aq) + H2O(aq)
⦁ What other combination of reactive chemicals can Jana use in case copper sulfate and zinc didn’t give her the results she was waiting for?
⦁ Create a model to demonstrate a chemical reaction, including a detailed explanation of the reaction and any changes that occur.
⦁ Research 2 other examples from real life where endothermic and exothermic reactions can be used safely in creating items of benefit to humanity. Describe the role of the reaction in the product usage.
Answer: I would love to help but i cant see the table
Explanation:
Jana can modify her device by increasing the amount of zinc and decreasing the amount of copper sulfate to generate more heat, which will increase the water temperature within the desired range of 70°C to 100°C.
How could Jana modify her design to meet the temperature constraints?
Factors that affected the water temperature include the amount of zinc and copper sulfate used, the duration of activation, and the initial temperature of water. To meet the temperature constraints, Jana could modify her device by:Increasing the amount of zinc and decreasing the amount of copper sulfate to generate more heatDecreasing the amount of water to be heatedUsing a more efficient heat transfer mechanismBy making these modifications, Jana can increase the water temperature to the desired range and ensure that her device is portable, safe, and effective.
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What is the pOH of a solution that has a [OH-] = 5.8 x 10^-9 *
A. 9.8
B. 5.8
C. 4.2
D. 8.2
6.84 is the pOH of a solution that has a [OH⁻] value 5.8 x 10⁻⁹. The correct option is option B among all the given options.
What is pOH?The concentration of hydroxide ions (OH-) is measured by pOH. It can be employed to express a solution's alkalinity.
Aqueous solutions containing pOH less than 7 at 25 degrees Celsius are alkaline, pOH larger than 7 are acidic, as well as pOH equal to 7 constitute neutral.
pOH = -log[ OH ]
pOH = -log[ 5.8 x 10⁻⁹ ]
= 5.84
Therefore, 6.84 is the pOH of a solution that has a [OH⁻] value 5.8 x 10⁻⁹. The correct option is option B among all the given options.
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How many moles of dinitrogen monoxide will be formed upon the complete reaction of 25.1 g of ammonium nitrate
Taking into account the reaction stoichiometry, 0.31375 moles of N₂O are formed upon the complete reaction of 25.1 g of ammonium nitrate.
Reaction stoichiometryIn first place, the balanced reaction is:
NH₄NO₃ → N₂O + 2 H₂O
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amount of moles of each compound participate in the reaction:
NH₄NO₃: 1 moleN₂O: 1 moleH₂O: 2 molesThe molar mass of the compounds is:
NH₄NO₃: 80 g/moleN₂O: 44 g/moleH₂O: 18 g/moleBy reaction stoichiometry, the following mass quantities of each compound participate in the reaction:
NH₄NO₃: 1 mole ×80 g/mole= 80 gramsN₂O: 1 mole ×44 g/mole= 44 gramsH₂O: 2 moles× 18 g/mole= 36 gramsMass of N₂O formedThe following rule of three can be applied: if by reaction stoichiometry 80 grams of NH₄NO₃ form 1 mole of N₂O, 25.1 grams of NH₄NO₃ form how many moles of N₂O?
moles of N₂O= (25.1 grams of NH₄NO₃ ×1 mole of N₂O) ÷80 grams of NH₄NO₃
moles of N₂O= 0.31375 moles
Finally, 0.31375 moles of N₂O are formed.
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Pls I need help. Search the Lewis dot structure for water and ethanol and examine the structures and identify which part is partial negative and partial positive.
The Lewis dot structure for water is H-O-H. The oxygen atom has a partial negative charge, while the hydrogen atoms have partial positive charges.
What is structure?Structure is the arrangement of components within a system or object. It is the way in which individual parts are organized to form a whole. Structures can be physical, such as a building, or intangible, such as a system of government or an organization. Structures provide an orderly arrangement of components and help to keep the system functioning properly. By designing structures that are efficient, stable, and able to withstand external forces, engineers and architects are able to create safe and reliable structures.
The Lewis dot structure for ethanol is C-H-O-H. The oxygen atom has a partial negative charge, while the carbon and hydrogen atoms have partial positive charges.
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