Yes, you can dissolve 0.35 moles of Potassium Permanganate (KMnO4) into 500 mL of water.
Explanation:To answer whether you can dissolve 0.35 moles of Potassium Permanganate (KMnO4) into 500 mL of water, we need to consider the solubility of the compound. Potassium Permanganate is highly soluble in water, with a solubility of about 7 g per 100 mL of water at room temperature. The molar mass of KMnO4 is 158.034 g/mol, so 0.35 moles would weigh 55.3119 g. Since you have 500 mL of water, which is about 500 g, you can dissolve 55.3119 g of KMnO4 into it.
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A gas has a pressure of 0.410 atm and volume of 32 L. At what pressure, would the volume of the gas change to 28 L
Marine organisms that are well adapted to drastic changes in salinity would most likely be found in which environment?
a. Hydrothermal vent
b. Estuary
c. Open ocean
d. Deep ocean
K12 the answer is estuary
Hope this helps!
which of the following groups contain 3 elements with stable electron configuration
a. xenon, neon, boron
b. calcium, krypton, argon c. helium, xenon, carbon d. argon, neon, xenon
Option d, which includes argon, neon, and xenon, contains three elements with stable electron configurations as they are all noble gases with full valence shells.
The student's question pertains to the electron configuration of elements, specifically identifying a group of elements that all have stable electron configurations. A stable electron configuration typically means having a full valence shell of electrons, which is characteristic of the noble gases. Noble gases include helium, neon, argon, krypton, xenon, and radon, and they are known for being chemically inert, or nonreactive, due to their complete electron shells. The correct answer to the question is option d. argon, neon, xenon, as all three of these elements are noble gases and therefore have a stable electron configuration.
Sulfuric acid reacts with aluminum hydroxide by double replacement. if 34 g of sulfuric acid react with 33 g of aluminum hydroxide, identify the limiting reactant.
To determine the limiting reactant between sulfuric acid and aluminum hydroxide, calculate the moles of each reactant using their molar masses. Comparisons based on the stoichiometric ratios from the balanced chemical equation reveal that sulfuric acid is the limiting reactant.
Explanation:To identify the limiting reactant when 34 g of sulfuric acid reacts with 33 g of aluminum hydroxide, we need to calculate the moles of each reactant based on their molar masses. The balanced chemical equation for the reaction between sulfuric acid (H₂SO₄) and aluminum hydroxide (Al(OH)₃) is:
3 H₂SO₄(aq) + 2 Al(OH)₃(s) → Al₂(SO₄)₃(aq) + 6 H₂O(l)
First, determine the molar mass of H₂SO₄, which is approximately 98 g/mol, and Al(OH)₃, which is approximately 78 g/mol. Then, calculate the moles of each reactant:
Moles of H₂SO₄ = 34 g / 98 g/mol = 0.347 molesMoles of Al(OH)₃ = 33 g / 78 g/mol = 0.423 molesThe balanced equation shows that 3 moles of H₂SO₄ react with 2 moles of Al(OH)₃. We then set up ratios to see which reactant is limiting:
0.347 moles H₂SO₄ × (2 moles Al(OH)₃ / 3 moles H₂SO₄) = 0.231 moles Al(OH)₃ required0.423 moles Al(OH)₃ × (3 moles H₂SO₄ / 2 moles Al(OH)₃) = 0.635 moles H₂SO₄ requiredSince we only have 0.347 moles of H₂SO₄ but require 0.635 moles to react with all the available Al(OH)₃, sulfuric acid is the limiting reactant.
Will maynez burns a 0.8-g peanut beneath 76 g of water, which increases in temperature from 22âc to 46 âc. (the specific heat capacity of water is 1.0 cal/(gââc).)
What is the ph of a 0.01 m solution of the strong acid hno3 in water?
The pH of a 0.01 M solution of the strong acid [tex]HNO\(_3\)[/tex] in water is 2.
To determine the pH of a strong acid solution, we can use the fact that strong acids completely dissociate in water. This means that for a 0.01 M solution of [tex]HNO\(_3\)[/tex], all of the [tex]HNO\(_3\)[/tex] molecules dissociate into H⁺ ions and [tex]NO\(_3\)\(^-\)[/tex] ions. Therefore, the concentration of H⁺ ions in the solution is equal to the concentration of the [tex]HNO\(_3\)[/tex] solution, which is 0.01 M.
The pH of a solution is defined as the negative logarithm (base 10) of the hydrogen ion concentration [H⁺]:
[tex]\[ \text{pH} = -\log_{10} [\text{H}^+] \][/tex]
Substituting the concentration of H⁺ ions into the equation gives:
[tex]\[ \text{pH} = -\log_{10} (0.01) \] \[ \text{pH} = -\log_{10} (10^{-2}) \] \[ \text{pH} = -(-2) \] \[ \text{pH} = 2 \][/tex]
Thus, the pH of a 0.01 M [tex]HNO\(_3\)[/tex] solution is 2.
Which of the following applies to a good hypothesis?
Select all that apply
- It explains the data that relates to the specific problem.
- It leads to correct predictions, some of which produce new evidence or experiments.
- It is biased by the experimenter's presuppositions.
- It is formulated based on subjective observations.
- It is formulated based on objective observations
The statements that applies to a good hypothesis are.
It explains the data that relates to the specific problem.It leads to correct predictions, some of which produce new evidence or experiments. It is formulated based on objective observationsGood hypothesis explained.
A good hypothesis ought to give an clarification for the information related to the issue being examined. It ought to too lead to forecasts that can be tried and possibly create modern prove or tests.
A good hypothesis ought to be defined based on objective perceptions, meaning it ought to be grounded in irrefutable and quantifiable information instead of subjective conclusions or inclinations.
It is worth noticing that a hypothesis can be impacted by earlier
information or foundation presumptions, but it ought to still be based on objective perceptions and open to experimental testing and confirmation.
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51.7ml at 27 Celsius and 90kpa to stp
What is the energy of an object in motion
It's kinetic energy :)
What is the mass of 1.71 ✕ 1023 molecules of h2so4?
The volume of a gas is 4.00 liters at 293 k and constant pressure. for the volume of the gas to become 3.00 liters, the kelvin temperature must be equal to
Answer:
3.00 * 293 / 4.00
Explanation:
Using Charles's law, which states the direct proportionality between volume and temperature of a gas at constant pressure, the final temperature needed for the gas to reach a volume of 3.00 liters is approximately 219.75 K.
The question is asking about the relationship between the volume and temperature of a gas at constant pressure. This relationship is described by Charles's law, which states that the volume of a gas is directly proportional to its temperature when pressure is held constant. In mathematical terms, V1/T1 = V2/T2, where V1 and T1 are the initial volume and temperature, and V2 and T2 are the final volume and temperature.
Given the initial volume of 4.00 liters and temperature of 293 K, if the volume decreases to 3.00 liters, we can solve for the new temperature using Charles's law:
(4.00 L / 293 K) = (3.00 L / T2)
By cross-multiplying and solving for T2, we get:
T2 = (3.00 L * 293 K) / 4.00 L = 219.75 K
So, for the volume of the gas to become 3.00 liters at constant pressure, the kelvin temperature must be approximately 219.75 K.
The number of protons is different for each element and is know as the
If the strength of the magnetic field at B is 6 units, the strength of the magnetic field at A is _____.
file:///C:/AOP/SH2016Curric/AOP.COM.Science.09IPC.2015/IntegratedPhysicsandChemistry2015/9/magnetic_field_ex1.gif
The magnetic field strength at point A cannot be determined based solely on the strength at point B being 6 units. Factors such as distance from the magnet, the presence of ferromagnetic materials, and orientation relative to the magnetic lines of force could affect its strength.
Explanation:Unfortunately, there is missing information in your question. The strength of the magnetic field at point A cannot be determined, just with the strength at point B being 6 units. The magnetic field strength can vary depending on factors like the distance from the magnet, if any ferromagnetic materials are near, and the orientation relative to the magnetic lines of force. Without additional context or information, it's impossible to infer the magnetic field strength at point A accurately.
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An explanation based on experimentation and data is a scientific
Olympic athletes have lower resting heart rates because
When 7.94 g of xylene was added to 132.5 g of cyclohexane, the freezing point of the solution was -4.9oC. What is the molar mass of xylene?
Why will oil and water never mix second law of thermodynamics?
What type of reaction is
Na2S (I) + CdNO3 (I) => CdS (s) + 2NaNO3 (I)
A. Double-Displacement
B. Single-Displacement
C. Decomposition
D. Synthesis
Answer:
The correct answer is A. Double-Displacement
Explanation:
A double displacement reaction is that two elements found in different compounds exchange positions, forming two new compounds. These chemical reactions do not present changes in the number of oxidation or relative load of the element. Generally the exchange occurs between reagents that are ionic compounds in solution, where the anions and cations of the compounds are exchanged.
Double displacement reactions follow the following general chemical equation:
AB + CD --- AD + CB
The initial compounds AB and CD react by exchanging "their partners" and thus form two new compounds: AD and CB. This reaction takes place if and only if A and D are more similar than A and C, or if CB links are more stable than those of CD. Since the reaction is a simple ion exchange, none of these gain or lose electrons, as mentioned above. Thus, if A is a +1 charge cation in compound AB, it will have the same +1 charge in compound AD.
The solvent of the double displacement reactions is almost always water and the reagents and products are usually ionic compounds, although they can also be acids or bases.
On the other hand, a precipitation reaction occurs when two aqueous ionic compounds form a new ionic compound that is not soluble in water. It is an example of double displacement reactions. In most precipitation reactions, one salt is soluble and the other precipitates. The insoluble compound that results is called precipitate. The solvent and soluble reaction compounds are called the supernatant. This is the type of reaction that happens in this case. In this case the insoluble compound is cadmium sulfide CdS.
HELP. Check all answers that apply.
Copper oxide is a(n):
atom.
molecule.
subatomic particle.
element.
compound.
A sample of ammonia contains 0.500 mol. What volume at STP would the gas occupy?
Identify which statement describes the following process. 2Ce + 3Cu2+ → 3Cu + 2Ce3+
A-Ce is oxidized because it is losing electrons and Cu is reduced because it is gaining electrons.
B-Ce is oxidized because it is losing electrons and Cu is reduced because it is losing electrons.
C-Ce is reduced because it is losing electrons and Cu is oxidized because it is gaining electrons.
D-Ce is reduced because it is gaining electrons and Cu is oxidized because it is losing electrons.
The correct statement describing the process is A. Ce is oxidized because it is losing electrons and Cu is reduced because it is gaining electrons.
To understand the oxidation and reduction processes in the given chemical reaction, we need to look at the changes in the oxidation states of the elements involved:
The reaction is:
[tex]\[ 2\text{Ce} + 3\text{Cu}^{2+} \rightarrow 3\text{Cu} + 2\text{Ce}^{3+} \][/tex]
For cerium (Ce), it starts with an oxidation state of 0 (since it is an elemental form) and ends up as Ce³⁺ , which means its oxidation state has increased from 0 to +3. An increase in oxidation state indicates that the element has lost electrons, which is the definition of oxidation. Therefore, Ce is oxidized. For copper (Cu), it starts with an oxidation state of +2 (since it is in the form of Cu²⁺ ions) and ends up as elemental copper with an oxidation state of 0. A decrease in oxidation state indicates that the element has gained electrons, which is the definition of reduction. Therefore, Cu is reduced. The correct description of the process is that Ce is oxidized because it loses electrons, and Cu is reduced because it gains electrons, which corresponds to option A. The other options contain incorrect descriptions of the oxidation and reduction processes for Ce and Cu.The vapor pressure of water at 25.0 oc is 23.8 torr. determine the mass of glucose (molar mass = 180. g/mol) needed to add to 27.78 moles of water to make a solution that has a vapor pressure of 23.1 torr.
what is part of the first stage in the process of technological design
Answer:
Researching information
Explanation: Edge 2020
hope this helps <3. Brainliest?
Identifying the problem is the first stage in the process of technological design.
What do you mean by technological design?Technological design is a distinctive process with a number of defining characteristics: It is purposeful; it is based on certain requirements; it is iterative; it is creative; and it is systematic.
The four steps in the technological design process are:
Identify the problem Design a solution or product Implement the design Evaluate the product/solution.Hence, identifying the problem is the first stage in the process of technological design.
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How many nad+ are reduced in the β-oxidation of stearoyl-coa to form nine molecules of acetyl-coa?
Calculate the mass of chromium found in the 2.50 g sample of stainless steel
To find the mass of 0.560 moles of chromium, multiply the number of moles by the molar mass of chromium (51.996 g/mol), resulting in 29.11816 grams.
Explanation:
To calculate the mass of chromium found in a 2.50 g sample of stainless steel, we need to know the percentage composition of chromium in the alloy. However, the question provides data for 0.560 moles of chromium and not the composition of the stainless steel sample. To find the mass of 0.560 moles of chromium, we use the molar mass of chromium.
Steps to Calculate Mass of Chromium
Determine the molar mass of chromium from the periodic table, which is approximately 51.996 g/mol.Multiply the number of moles of chromium (0.560 moles) by its molar mass.The resultant product gives the mass of 0.560 moles of chromium.Performing this calculation: 0.560 moles × 51.996 g/mol = 29.11816 grams of chromium.
What is the pH of blood, given the hydrogen ion concentration is 4.0 × 10-8M?
The pH of blood with a hydrogen ion concentration of 4.0 × 10⁻⁸ M, we use the formula pH = -log[H+]. This results in a pH of approximately 7.4, indicating that blood is slightly alkaline.
The pH of blood given the hydrogen ion concentration, use the formula: pH = -log[H+]
Given: [H+] = 4.0 × 10⁻⁸ M
Step-by-step calculation:
First, find the log of 4.0 × 10⁻⁸log(4.0 × 10-8) = log(4.0) + log(10⁻⁸)log(4.0) ≈ 0.6021log(10-8) = -8Therefore, log(4.0 × 10⁻⁸) ≈ 0.6021 - 8 = -7.3979So, the pH = -(-7.3979) = 7.3979
Conclusion: The pH of blood is approximately 7.4, which is slightly alkaline.
Molecules of hydrogen escape from earth, but molecules of oxygen and nitrogen are held to the surface and remain in the atmosphere. explain.
Answer:
Hydrogen is a light molecule
Explanation:
The molecular weight of a gas determines its molecular speed. Hydrogen is a very light gas, far lighter than oxygen or nitrogen. These heavier gases cannot escape the earth because of their molecular weight but hydrogen does escape the earth surface because it is very light molecule having very high molecular speed.
Which of these choices is an indirect cost of using coal?
A. Cost to transport coal
B. Cost of maintaining power plants
C. Cost to mine coal
D. Cost of pollution from burning coal
Answer:
D. Cost of pollution from burning coal
Explanation:
Energy resources can be classified into two categories: renewable and non-renewable.
Renewable resources are those that can be replenished within a short time. This includes, wind energy, solar, hydrothermal etc
Non-renewable resources in contrast, are finite and are in limited supply. This includes, fossil fuels like coal, oil and natural gas as well as nuclear energy.
Coal is a fossil fuel which also the most common source of energy. However, it pollutes the environment by emitting carbon dioxide which is greenhouse gas.
In an ecosystem ,cost of pollution from burning coal is an indirect cost of using coal.
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
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In a reaction, a gas being produced is
Three different sub-atomic particles are described below:
Particle X: Uncharged
Particle Y: Present outside the nucleus
Particle Z: Attracts Particle Y
Which statement is true?
X is a neutron, Y is an electron, and Z is a proton.
X is a neutron, Y is a proton, and Z is an electron.
X is a proton, Y is an electron, and Z is a neutron.
X is an electron, Y is a proton, and Z is a neutron.
Answer:
The first answer
Explanation:
Why? Because i got it right on my test.
I didn't copy of the other persons answer.