The condensed structural formula of the organic compound cannot be determined from the given information. However, the compound is basic and is a reducing agent.
What is a condensed structural formula?Condensed structural formulas are the formula of organic compounds that conserves space and are easier and faster to write out, displaying the atoms' positions similar to a structural formula but on a single line.
When demonstrating how a group of atoms in a molecule are linked to a single atom, condensed structural formulae are also helpful.
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Should scientists continue to find new ways to use ethanol?
Answer:
Ethanol has been used as a fuel source for many years, and it is often blended with gasoline to create a biofuel. It is also commonly used as a solvent, in the manufacture of personal care products, and as a feedstock for the production of chemicals such as acetaldehyde and ethylene.
However, the use of ethanol has been a subject of debate, as it has both benefits and drawbacks. Ethanol is considered a renewable fuel source, as it can be produced from various biomass sources such as corn, sugarcane, and switchgrass. It is also biodegradable and non-toxic, which makes it a cleaner-burning fuel compared to traditional gasoline.
On the other hand, the production of ethanol requires a significant amount of energy and resources, such as water and fertilizer. Additionally, the production of ethanol from crops such as corn can lead to competition with food production, which can increase food prices and impact food security.
Therefore, whether or not scientists should continue to find new ways to use ethanol depends on the specific applications and the associated benefits and drawbacks. It is important to weigh the environmental and economic impacts of ethanol production and use, and to consider alternative fuel sources and technologies that can minimize these impacts.
metals are lustrous but an iron rod used in construction sites does not shine. explain why ?
An iron rod used in construction sites does not shine because it is often coated with a layer of rust.
What is rust ?
Rust is a type of corrosion that occurs when iron or steel is exposed to oxygen and moisture over time.
Metals are lustrous because of their ability to reflect light due to the presence of free electrons in their outermost energy levels. When light strikes a metal surface, these free electrons absorb the energy of the light and then re-emit it in all directions, giving the metal its characteristic shine. However, an iron rod used in construction sites does not shine because it is often coated with a layer of rust or other contaminants that can prevent the reflection of light. Rust is formed by the reaction of iron with oxygen in the presence of water or moisture. This rust layer can obscure the metallic luster of the iron and make it appear dull. Additionally, the iron used in construction sites is often not polished or finished to a high degree, which can also contribute to its lack of shine. The surface of the iron can have rough edges or irregularities that can scatter light, rather than reflect it uniformly, leading to a loss of shine.
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O Cr³+ because it loses electrons
O Na because it loses electrons
O Cr³+ because it gains electrons
O Na because it gains electrons
Cr³+ + 3Na
3Na+ + Cr
The symbol is shown as Cr³+ because it loses electrons. Option A
What is oxidation?When we talk about the process of oxidation, what is going on is the loss of electrons. Thus it is possible to say that ocidation is electron loss. The electrons that are lost would lead to the formation of a specie that has a positive ion.
The magnitude of the positive charge that we see in the compound is based on the number of electrons that it has lost in the process of the oxidation of the compound. There are three electrons that have been lost for chromium as shown.
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how much energy did it take to change 312g of water into steam at STP
At STP, it requires 705.3 kJ of energy to convert 312 g of water into steam
To solve this problem
We must make use of the heat that causes water to vaporize.
The amount of energy needed to convert one mole of water from a liquid to a gas at its boiling point is known as the heat of vaporization of water, and its value is 40.7 kJ/mol.
We can begin by figuring out how many moles there are in 312 g of water:
n = m/M
Where
n is the molecular weight m is the massThe molar mass of water is MWater's molecular weight (H2O) is calculated as follows: 2(1.008 g/mol) + 15.999 g/mol = 18.015 g/mol n = 312 g / 18.015 g/mol = 17.32 mol
Therefore, in order to produce steam at STP, 17.32 moles of water are required.
The energy required to vaporize 1 mole of water at STP is 40.7 kJ, so the energy required to vaporize 17.32 moles of water is:
E = n x ΔHvap
E = 17.32 mol x 40.7 kJ/mol
E = 705.3 kJ
Therefore, at STP, it requires 705.3 kJ of energy to convert 312 g of water into steam.
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How is the equation E=mc^2 related to energy production in the Sun?
The relationship between the equation E=mc^2 and the energy production in the Sun is Nuclear fusion
What is Nuclear fusion?Nuclear fusion is a reaction that occurs when two or more atomic nuclei unite to produce one or more distinct atomic nuclei and subatomic particles. The difference in mass between the reactants and products manifests itself as either energy release or absorption.
Nuclear fusion occurs when two light atomic nuclei combine to form a single heavier nucleus. This generates a tremendous quantity of energy while also occasionally releasing other chemicals, such as hydrogen fusion, which produces helium.
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If the pH at 50.0 mL NaOH added is 4.0 and the pH at 150.0 mL NaOH added is 8.0, determine the values Ka1 and Ka2 for the diprotic acid.
The [tex]Ka_{1[/tex] and [tex]Ka_{2}[/tex] of a diprotic acid if the pH at 50.0 mL [tex]NaOH[/tex] added is 4.0 and the pH at 150.0 mL [tex]NaOH[/tex]added is 8.0 is [tex]1.0*10^{-4}[/tex] and [tex]1.0*10^{-8}[/tex] respectively.
How to calculate equivalence point?To reach the first equivalence point, 50.0 mL of [tex]NaOH[/tex] must be added. This is where [tex][H_{2}A]=[HA^{-}][/tex]
[tex]pH=pKa_{1} +log\frac{[HA^{-} ]}{[H_{2}A] } 4.0=pKa_{1}[/tex]
[tex]Ka_{1}= antilog (-4)[/tex]
[tex]Ka_{1} = 1.0 *10^{-4}[/tex]
It takes 50.0 mL of [tex]NaOH[/tex]to get to the first equivalency point. In this location [tex][HA^{-} ]=[A^{2-}][/tex]
[tex]pH=pKa_{2} +log\frac{[HA^{-} ]}{[H_{2}A] } 8.0=pKa_{2}[/tex]
[tex]Ka_{2}= antilog (-8)[/tex]
[tex]Ka_{2} = 1.0 *10^{-8}[/tex]
A known concentration of [tex]NaOH[/tex] solution is used to titrate a diprotic acid. The diprotic acid's molecular weight (or molar mass) is measured in grams per mole.
The mass in grams of the initial acid sample can be determined by weighing it.
The quantity of [tex]NaOH[/tex]titrant required to reach the first equivalence point can be used to identify moles.
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explain the role of pharmaceutical chemist in the synthesis of effective new drugs
Pharmaceutical chemists play a crucial role in the synthesis of effective new drugs. They design and synthesize new chemical compounds, and modify existing ones to optimize their pharmacological activity, selectivity, and safety.
Pharmaceutical chemists use their knowledge of chemistry and biochemistry to design and optimize molecules that can bind to specific biological targets, such as enzymes or receptors. They also investigate the structure-activity relationships of drugs and study the pharmacokinetics and metabolism of new compounds.
Pharmaceutical chemists work in interdisciplinary teams with other scientists, including biologists, pharmacologists, and clinical researchers, to develop and test new drugs. Their work helps to identify and optimize promising drug candidates, to advance them through preclinical and clinical development toward regulatory approval, and eventual commercialization.
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The pH of Diet Coke is 3.36.
What is the [H1+] for Diet Coke?
What is the pOH for Diet Coke?
What is the [OH-] for Diet Coke?
Identify the type of solution made with Diet Coke.
The acidity of a solution can be expressed as:
pH = -log₁₀[H⁺]. Historically, pH is an acronym for "potential of Hydrogen". The scale goes from 1 to 14, where acidic solutions are measured to have lower pH values than basic or alkaline solutions. a pH of 7 represents a neutral solution.
Similarly, the alkalinity of a solution can be expressed as:
pOH = -log₁₀[OH⁻], where a high pOH represents a basic solution and a low pOH represents an acidic solution.
The mathematical relationship between pH and pOH is given by the following equation: pH + pOH = 14
If the pH of Diet Coke is 3.36, then 3.36 = -log₁₀[H⁺]
[tex]\therefore\,\,[H^+] = 10^{-3.36} = 0.0004365 \approx \boxed{4.37\times10^{-4} \,\text{mol\,L}^{-1}}[/tex]
Now we can use the relationship between pH and pOH, and thus:
[tex]\text{pOH} = 14 - \text{pH} =14-3.36\,{=10.64}[/tex]
If the pOH of Diet Coke is 10.64, then 10.64 = -log₁₀[OH⁻]
[tex]\therefore\,\,[OH^-] = 10^{-10.64} = 2.2909\times10^{-11} \approx \boxed{2.29\times10^{-11} \,\text{mol\,L}^{-1}}[/tex]
The solution made with diet coke is an acidic solution
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Eneregy that is produced by electrons trasfering from one object to another
The energy that is produced by electrons transferring from one object to another is called electrical energy.
What are electrons ?
Electrons are negatively charged subatomic particles that orbit the nucleus of an atom. They are one of the three fundamental particles that make up an atom, along with protons and neutrons.
Electrical energy is a form of energy that is associated with the movement of charged particles, specifically electrons, through conductive materials such as wires. When electrons move through a wire, they can transfer energy to other objects, such as light bulbs or motors, causing them to perform work. Electrical energy can be generated from a variety of sources, including chemical reactions, mechanical motion, and solar power. It is used in a wide range of applications, from powering homes and businesses to running electronic devices and transportation systems.
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draw an aromatic ring, which contains only hydrogens and 5 carbons. add charges and lone pairs if needed.
The aromatic ring shown here contains 5 carbon atoms and has no charges or lone pairs.
What is atoms?Atoms are the building blocks of matter and the fundamental units of all matter. They are the basic particles that make up everything in the universe. An atom is composed of three main components: protons, neutrons, and electrons. Protons and neutrons are located in the nucleus of the atom, while electrons orbit around the nucleus. Atoms can combine with other atoms to form molecules, which are the basic components of all living things.
Each carbon atom has three single bonds to hydrogen atoms, forming a hexagonal shape with alternating single and double bonds. This is the structure of benzene, an aromatic hydrocarbon.
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The titration of 25.00mL of 0.166 M NaOH required 19.5 mL of HCH3COO. what is the value forbthe unknown concentration of HCH3COO?
Answer:
unknown concentration of CH₃COOH = 0.2128 mol/L
Volumetric Analysis: TitrationVolumetric analysis is a quantitative laboratory technique used to determine the concentration of a solution by reacting it with a standard solution. A simple titration is an example of volumetric analysis, with others being back titrations, and double titrations
A Simple titration involves the slow adding of one solution of a unknown concentration (known as titrant), from a burette, to another solution, in a conical flask, of known volume and known concentration (known as a standard solution) The titrant is added until the second solution is neutralised by the titrant, which is often apparent via colour change from using an indicator. This point where the colour change occurs, is called the end point, and marks when the reaction is complete.
The volume of titrant used to neutralise the standard solution, is known as the titre, and is used in volumetric analysis, to calculate the unknown concentration of the titrant.
In titration of 0.02500 L of 0.166 mol/L NaOH (standard solution = flask), with a CH₃COOH titrant (unknown concentration = burette), the titre required to meet end point = 0.0195 L of CH₃COOH
To find the concentration, we require moles, and volume (titre). To calculate moles, we can consider the equation of the reaction:
CH₃COOH(aq) + NaOH(aq) → NaCH₃COO(aq) + H₂O(l)
The stoichiometry of the above reaction is 1 : 1. Therefore:
moles of CH₃COOH = moles of NaOH
Stoichiometry:The ratio of coefficients of reactants and products in a reaction equation, is known as the stoichiometry of the reaction.
Thus, mol(NaOH) = concentration×Volume
= 0.166×0.02500 = 4.15×10⁻³ mol
mol(NaOH) = mol(CH₃COOH) = 4.15×10⁻³ mol
Therefore, concentration of CH₃COOH = mol/volume (titre)
= 4.15×10⁻³/0.0195 = 0.2128 mol/L
∴ unknown concentration of CH₃COOH = 0.2128 mol/L
Hybridization=1/2[V+M-C+A]
for ethyne C2H2 central atom is carbon and one hydrogen atom is bonded with carbon
therefor
hybridization = 0.5[4 + 1)
hybridization = 2.5
but the hybridization of C2H2 is sp
The hybridization of the carbon atom in C2H2 is actually sp, not 2.5 as calculated using the formula hybridization = 1/2[V+M-C+A]. This formula gives an estimate of the hybridization state of an atom based on the number of valence electrons (V), monovalent atoms (M), cations (C), and anions (A) surrounding it.
In the case of C2H2, the carbon atom has four valence electrons and is bonded to two hydrogen atoms and another carbon atom, making the total number of surrounding atoms (M) equal to three. There are no cations or anions surrounding the carbon atom. Applying the formula, we get hybridization = 0.5[4 + 3] = 3.5/2 = 1.75. However, this value is not a possible hybridization state for carbon.
The actual hybridization state of the carbon atom in C2H2 is sp because it forms two sigma bonds with the two hydrogen atoms using the 2s and one of the 2p orbitals, leaving the remaining two p orbitals unhybridized. This unhybridized p orbital overlap to form a pi bond between the two carbon atoms. Thus, the carbon atom in C2H2 uses two hybridized sp orbitals and two unhybridized p orbitals to form its bonds.
Overall, the hybridization state of an atom cannot be accurately determined using a formula alone and requires knowledge of the molecular geometry and bonding of the molecule.
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The question is incomplete. the complete question is
Hybridization=1/2[V+M-C+A]
for ethyne C2H2 central atom is carbon and one hydrogen atom is bonded with carbon
therefor
hybridization = 0.5[4 + 1)
hybridization = 2.5
but the hybridization of C2H2 is sp
Are these answers correct?
what is the mass of 37.2 L of hydrogen gas at 273K and 1 atm?
The mass of 37.2L of hydrogen gas at 273K and 1 atm is 3.32 grams.
How to calculate mass?The mass of a gas can be calculated by multiplying the number of moles of the substance by its molar mass.
However, the number of moles in the substance needs to be calculated first by using the Avogadro's equation as follows;
PV = nRT
Where;
P = pressureV = volume n = number of molesT = temperatureR = gas law constant1 × 37.2 = n × 0.0821 × 273
37.2 = 22.4133n
n = 1.66 moles
mass of hydrogen gas = 1.66mol × 2g/mol = 3.32 grams.
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how many moles of o2 are required to form 12 moles of copper (III) oxide
The balanced chemical equation for the formation of copper (III) oxide [tex]Cu2O3[/tex](Cu2O3) from copper[tex](Cu)[/tex] (Cu) and oxygen[tex]O2[/tex] (O2) is:
[tex]4Cu + 3O2 ---- > 2Cu2O3[/tex] 4Cu + 3O2 → 2Cu2O3
How many moles of o2 are required to form 12 moles of copper (III) oxide?
From the equation, we can see that for every [tex]3[/tex] 3 moles of [tex]O2[/tex] O2, [tex]2[/tex]2 moles of [tex]Cu2O3[/tex] Cu2O3 are formed. Therefore, the number of moles of [tex]O2[/tex] O2 required to form [tex]12[/tex] 12 moles of [tex]Cu2O3[/tex] Cu2O3 can be calculated as follows:
Number of moles of[tex]O2 = (12 mol Cu2O3) * (3 mol O2/2 mol Cu2O3)[/tex]
O2 = (12 mol Cu2O3) x (3 mol O2/2 mol Cu2O3)
Number of moles of [tex]O2 = 18[/tex] O2 = 18 moles of [tex]O2[/tex] O2
Therefore, [tex]18[/tex] 18 moles of [tex]O2[/tex] O2 are required to form [tex]12[/tex] 12 moles of copper (III) oxide.
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can someone help me on number 4 and 5
4. The speed of the wave is 280 meters per second.
5. The frequency of the wave is approximately 64.71 Hertz.
Calculating for speed and frequencySpeed = frequency x wavelength
4. To calculate the speed of the wave as:
speed = frequency x wavelength
speed = 560 Hz x 0.50 m
speed = 280 m/s
Therefore, the speed of the wave is 280 meters per second.
5. To solve for the frequency,
frequency = speed ÷ wavelength
frequency = 22 m/s ÷ 0.34 m
frequency ≈ 64.71 Hz
Therefore, the frequency of the wave is approximately 64.71 Hertz.
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4. The speed of the wave with frequency of 560 Hz is 280 m/s
5. The frequency of the wave moving at 22 m/s is 64.71 Hertz
4. How do i determine the speed of the wave?The speed of the wave can be obtained as follow:
Frequency of sound wave (f) = 560 HzWavelength of sound wave (λ) = 0.50 mSpeed of wave (v) =?Speed of wave (v) = wavelength (λ) × frequency (f)
Speed of wave (v) = 0.5 × 560
Speed of wave (v) = 280 m/s
Thus, the speed of the wave is 280 m/s
5. How do i determine the frequency?The frequency of the wave can be obtained as shown below:
Speed of wave (v) = 22 m/sWavelength of wave (λ) = 0.34 mFrequency of wave (f) =?Speed of wave (v) = wavelength (λ) × frequency (f)
22 = 0.34 × frequency
Divide both sides by 0.34
Frequency = 22 / 0.34
Frequency of wave = 64.71 Hertz
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What are the weather conditions such as temperature clouds and precipitation for point A?
Explain reasoning
Any liquid or frozen water that condenses in the atmosphere and falls to the ground is referred to as precipitation. Rain, sleet, and snow are only a few of its various manifestations and evaporation.
Thus, Precipitation is one of the three main processes that make up the global water cycle, together with evaporation and condensation.
Water vapour in the clouds condenses into increasing-sized droplets of water, forming precipitation.
Particles of clean or smoke within the air are basic for precipitation. These particles, called “condensation nuclei,” give a surface for water vapor to condense upon.
Thus, Any liquid or frozen water that condenses in the atmosphere and falls to the ground is referred to as precipitation. Rain, sleet, and snow are only a few of its various manifestations and evaporation.
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can someone please help me with this chemistry question!!!
The conjugate acid-base pairs in this reaction are:
Acid: H₂SO₄ Base: H₂OConjugate Acid: H₃O⁺Conjugate Base: SO₄²⁻-What are conjugate acid-base pairs?Two substances that only differ by the presence of a proton (H+) are said to be a conjugate acid-base pair.
When a proton is added to a base, a conjugate acid is formed, while when a proton is taken away from an acid, a conjugate base is formed.
The balanced equation for the acid-base reaction between an acid and a base producing H₃O⁺ and SO₄²⁻ is:
H₂SO₄ + 2 H₂O → 2 H₃O⁺ + SO₄²⁻
The acid and base are H₂SO₄ and H₂O, respectively. H₂SO₄ donates a proton to the H₂O, forming the conjugate acid H₃O⁺ and the conjugate base SO₄²⁻-.
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Imagine you fill a balloon with air to a volume of 240. mL. Initially the air temperature is 25*C and the air pressure is 1.0 atm. You carry the balloon with you up a mountain where the air pressure is 0.75 atm and the temperature is 25*C.
A) when the balloon is carried up the mountain, what changes? What stays the same?
B) the air pressure outside of the balloon has decreased. Can the air pressure on the inside decrease so that the pressures are equal? Why or why not?
C) what happens to the volume occupied by the air inside the balloon? Explain your thinking.
D) solve for the new volume of the balloon
arrangement around the central atom in BrF4.octahedral
Answer:
The shape of BrF4– is square planar because the central atom Bromine is sp3d2 hybridized. The central atom Br has four bond pairs and two lone pairs present on it. The electron pair geometry of BrF4– is octahedral.
The acid dissociation constant K of hypobromous acid (HBrO) is 2.3 × 10 ^-9.
Calculate the pH of a 5.8M solution of hypobromous acid. Round your answer to 1 decimal place.
The pH of a 5.8M solution of hypobromous acid is 4.9.
Dissociation of hypobromous acid (HBrO)
HBrO ⇌ H⁺ + BrO⁻
Acid dissociation constant (K) of HBrO is given as 2.3×10⁻⁹
K = [H⁺][BrO⁻]/[HBrO]
Solution of hypobromous acid 5.8M
H⁺ and BrO⁻ are produced when x moles of HBrO dissociate into x moles of H+.
Equilibrium concentration of HBrO = (5.8 - x) M
K = [H⁺][BrO⁻]/[HBrO] = x²/(5.8 - x)
x = (-b ± √(b²-4ac)/2a)
a = 1, b = 0, and c = -K(5.8)
x = (-0 ± √(0² - 4(1)(-2.3 × 10⁻⁹)(5.8))/2(1)
x = 1.227×10⁻⁵
The equilibrium concentration of H+ and BrO- is 1.227×10⁻⁵ M, and the equilibrium concentration of HBrO is 5.8 M
Therefore, pH of the solution
pH = -log[H⁺]pH = -log(1.227ₓ10⁻⁵) = 4.9
The pH of a 5.8M solution of hypobromous acid is 4.9.
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Consider the following system at equilibrium: N2(g) + 3 H2(g) 2 NH3(g) + heat After reaching equilibrium, an engineer suggests increasing the heat to speed up the reaction to get more product. Will the engineer's suggestion work? Answer using a CER response format. Be sure to include evidence from the equation and apply Le Chatelier's Principle in your explanation.
The engineer's suggestion will not work because according to the Le Chatelier's Principle, the reaction will be favored in the condition that if lower the temperature.
The reaction is as :
N₂(g) + 3 H₂(g) ⇄ 2 NH₃(g) + heat
The forward reaction is the exothermic reaction. According to the Le Chatelier's Principle, the reaction will be favored in the condition that if lower the temperature. At the very low temperature it will create the reaction that is to occur at the very slowly and therefore, it is not the efficient.
At the low temperature and the high pressure the reaction favored the forward reaction.
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I could really use some help with this, and I would greatly appreciate any help with this.
3. Your cooler holds 15.0 liters of water. How many liters of 5.0 M concentrated lemonade solution is needed to make a 0.85 M solution?
We need 2.55 liters of 5.0 M concentrated lemonade solution to make a 0.85 M solution in a 15.0-liter cooler.
To make a 0.85 M solution of lemonade, we need to calculate the amount of concentrated lemonade solution required. We can use the formula:
[tex]C_1V_1 = C_2V_2[/tex]
where [tex]C_1[/tex] is the initial concentration (5.0 M), [tex]V_1[/tex] is the volume of concentrated solution we need to add (unknown), [tex]C_2[/tex] is the final concentration (0.85 M), and [tex]V_2[/tex] is the final volume of the solution (15.0 L).
Rearranging the formula, we get:
[tex]V_1 = (C_2 x V_2) / C_1[/tex]
Plugging in the values, we get:
V1 = (0.85 M x 15.0 L) / 5.0 M = 2.55 L
Therefore, we need 2.55 liters of 5.0 M concentrated lemonade solution to make a 0.85 M solution in a 15.0-liter cooler.
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What is the molarity of a 450 mL solution containing 3.5 moles of potassium nitrate?
How many moles of sodium nitrate are in 0.33 L of a 0.33 M solution?
What volume of 2.6 M potassium chlorate (PClO3 molar mass= 123 g/mol) contains 48 g of solute?
What mass of ammonia (NH3) is contained in 1500 mL of 0.75 M solution?
A 2.0 M HCl has a volume of 800 mL. What is the mole value?
What is the mass percent of magnesium acetate solution made with 34 g of solute and 150 g of water?
A 325 g sample of a sodium fluoride solution contains 15 g of solute. Determine the mass percent of the solute.
What is the total mass of a solution when the mass of the solute is 17g and the mass percent of the solute is 42%?
1. The molarity of the solution is 7.78 M. 2. There are 0.109 moles of sodium nitrate in 0.33 L of a 0.33 M solution.
2. We are given 3.5 moles of potassium nitrate in 450 mL of solution. To find molarity, we need to convert mL to L:
450 mL = 0.45 L
Then we can use formula:
Molarity = moles of solute/liters of solution
Molarity = 3.5 moles / 0.45 L= 7.78 M
2. We are given volume of 0.33 L and a molarity of 0.33 M for sodium nitrate. To find the number of moles of sodium nitrate, using:
moles of solute = molarity x liters of solution
moles of solute = 0.33 M x 0.33 L = 0.109 moles
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--The complete Question is 1. What is the molarity of a 450 mL solution containing 3.5 moles of potassium nitrate?
2. How many moles of sodium nitrate are in 0.33 L of a 0.33 M solution? --
A solution of nitric acid (HNO3) is 36.5 m with a density of 1.41 g/mL.
a) Determine the molarity of the solution.
b) Determine the percent by mass of HNO3 in the solution.
The solution has a molarity of 38.767 M., HNO3 is present in the solution at a mass percentage of 62291%.
a) Determine the molarity of the solution.Molarity = moles of solute/volume of solution (in litres)
moles of nitric acid is present in the solution:
mass of nitric acid = density x volume x molar mass
mass of nitric acid = [tex]1.41 g/mL x 1000 mL x 63.01 g/\\olmass of nitric acid = 89.1201 g[/tex]
number of moles of nitric acid = mass / molar mass
number of moles of nitric acid = [tex]89.1201 g / 63.01 g/mol[/tex]
number of moles of nitric acid = [tex]1.4145 mol[/tex]
Now, calculate the molarity:
Molarity = moles of solute/volume of solution
Molarity = [tex]1.4145 mol / 0.0365 L[/tex]
Molarity = [tex]38.767 M[/tex]
B)Determine the per cent by mass of HNO3 in the solution.% by mass = (mass of HNO3 / total mass of solution) x 100%
mass of HNO3 = volume of solution x density x molarity x molar mass
mass of HNO3 = [tex]0.0365 L x 1.41 g/mL x 38.767 mol/L x 63.01 g/mol[/tex]
mass of HNO3 = 32.0131 g
the total mass of the solution:
total mass of solution = volume of solution x density
total mass of solution = 0.0365 L x 1.41 g/mL
total mass of solution = 0.051365 g
Finally, the per cent by mass:
% by mass = (mass of HNO3 / total mass of solution) x 100%
% by mass = [tex](32.0131 g / 0.051365 g) *100%[/tex]
% by mass = 62291%
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The solution has a molarity of 38.767 M and contains 62291% HNO3 by mass.
What is molarity?
The molarity (M) of a solution is defined as the number of moles of solute dissolved in one liter of solution.
The formula for determining molarity is moles of solute/liters of solution.
Mass / molar mass = number of nitric acid moles.
Nitric acid's molecular weight is equal to 89.1201 g divided by 63.01 g/mol, or 1.4145 mol, while formic acid's mass is equal to 1.49*1000*63.01, or 89.1201 g.
The moles of a solute divided by the volume of a solution is the molality.
Mass of HNO3 = volume of solution x density x molarity x molar mass Mass of HNO3 = 0.0365 * 38.767 * 63.01 = 32.01
Molarity = 1.4145 / 0.0365 = 38.767 M
Total mass of solution equals volume of solution times density, or 0.051 g. Percent by mass equals mass of HNO3 divided by total mass of solution, or 32.01/0.051, multiplied by 100%, or 62291%.
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A flashbulb of volume 2.00 mL contains O2(g) at a pressure of 2.30 atm and a temperature of 20.0 °C. How many grams of O2(g) does the flashbulb contain?
Answer:
la bombilla de flash contiene 0,00550 gramos de O2
Explanation:
If 2.05 mol of an ideal gas at 279 K has a volume of 206 L, what will its pressure be in kPa?
Use one of the following values:
R = 0.0821 atm • L/mol • K
R = 8.31 kPa • L/mol • K
R = 62.4 torr • L/mol • K
The pressure of the ideal gas if it has a volume of 206L and a temperature of 279K is 23.07 atm.
How to calculate pressure?The pressure of an ideal gas can be calculated using Avogadro's equation as follows;
PV = nRT
Where;
P = pressureV = volumen = no of molesT = temperatureR = gas law constantAccording to this question, 2.05 mol of an ideal gas at 279 K has a volume of 206 L. The pressure can be calculated as follows:
P × 206 = 2.05 × 8.31 × 279
206P = 4,752.9045
P = 23.07 atm
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I need help please!!!
The mass (in grams) of Ni(OH)₂ that will be formed from the reaction, given that 24 g of NaOH is added to 0.550 L of 1 M Ni(NO₃)₂ is 27.81 g
How do i determine the mass of Ni(OH)₂ formed?First, we shall determine the mass in 0.550 L of 1 M Ni(NO₃)₂. Details below:
Volume = 0.550 Molarity = 1 MMole of Ni(NO₃)₂ = molarity × volume = 1 × 0.55 = 0.55 moleMolar mass of Ni(NO₃)₂ = 182.7 g/molMass of Ni(NO₃)₂ =?Mass = Mole × molar mass
Mass of Ni(NO₃)₂ = 0.55 × 182.7
Mass of Ni(NO₃)₂ = 100.485 g
Next, we shall determine the limiting reactant. Details below:
2NaOH + Ni(NO₃)₂ -> Ni(OH)₂ + 2NaNO₃
Molar mass of NaOH = 40 g/molMass of NaOH from the balanced equation = 2 × 40 = 80 g Molar mass of Ni(NO₃)₂ = 182.7 g/molMass of Ni(NO₃)₂ from the balanced equation = 1 × 182.7 = 182.7 gFrom the balanced equation above,
80 g of NaOH reacted with 182.7 g of Ni(NO₃)₂
Therefore,
24 g of NaOH will react with = (24 × 182.7) / 80 = 54.81 g of Ni(NO₃)₂
From the above calculation, we can see that only 54.81 g of Ni(NO₃)₂ out of 100.485 g is needed to react with 24 g NaOH.
Thus, the limiting reactant is NaOH.
Finally, we shall determine the mass of Ni(OH)₂ formed from the reaction. Details below:
2NaOH + Ni(NO₃)₂ -> Ni(OH)₂ + 2NaNO₃
Molar mass of NaOH = 40 g/molMass of NaOH from the balanced equation = 2 × 40 = 80 g Molar mass of Ni(OH)₂ = 92.7 g/molMass of Ni(OH)₂ from the balanced equation = 1 × 92.7 = 92.7 gFrom the balanced equation above,
80 g of NaOH reacted to produce 92.7 g of Ni(OH)₂
Therefore,
24 g of NaOH will react to produce = (24 × 92.7) / 80 = 27.81 g of Ni(OH)₂
Thus, the mass of Ni(OH)₂ formed is 27.81 g
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I WILL GIVE YOU 35 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS PLEASE
Answer: You need to use 5.75 grams of NaCl to make a 2.81 L of a 0.035 M solution.
Explanation: To calculate the mass of NaCl required to make a 2.81 L of a 0.035 M solution, you can use the formula:
mass = moles x molar mass
where moles = volume x molarity.
First, calculate the moles of NaCl required:
moles = volume x molarity
moles = 2.81 L x 0.035 mol/L
moles = 0.09835 mol
Next, calculate the molar mass of NaCl, which is the sum of the atomic masses of sodium and chlorine:
molar mass = 23.0 g/mol + 35.5 g/mol
molar mass = 58.5 g/mol
Finally, use the formula to calculate the mass of NaCl required:
mass = moles x molar mass
mass = 0.09835 mol x 58.5 g/mol
mass = 5.75 g
Therefore, you need to use 5.75 grams of NaCl to make a 2.81 L of a 0.035 M solution.
Answer:
[tex]5.7534*10^{-3} g[/tex]
Explanation:
Concerning the Haber-Bosch for the synthesis of ammonia,
N₂(g) + 3H₂(g) ⇌ 2NH₃(g)
which of the following statements is/are true?
I. Ammonia is continually liquified and removed from the reactor.
II. The temperature of the reaction mixture is kept below the boiling point of ammonia (-33 °C).
III. The reaction is carried out at low pressure.
a. I and II
b. II only
c. III only
d. I only
e. I, II, and III
Answer: e. I, II, and III. The Haber-Bosch process uses nitrogen gas and hydrogen gas to form ammonia gas. In order to facilitate the reaction, the temperature of the reaction mixture is kept below the boiling point of ammonia (-33°C), the reaction is carried out at low pressure.
What is Haber-Bosch process?The Haber-Bosch process is an industrial process used to synthesize ammonia (NH₃) from nitrogen and hydrogen. Developed in the early 20th century by German chemists Fritz Haber and Carl Bosch, the Haber-Bosch process combines nitrogen gas (N₂) and hydrogen gas (H₂) at high temperature (400-500 °C) and pressure (150-200 atmospheres) in the presence of a metal catalyst (e.g., iron) to form ammonia molecules. The product of the reaction is then purified, concentrated, and stored for use in industry. The Haber-Bosch process is the main method used today to produce ammonia for use in fertilizers and other chemicals, and has been critical in meeting the growing global demands for food production.
What is reaction mixture?A reaction mixture is a combination of two or more reactant chemicals mixed together for the purpose of producing a new chemical compound. The mixture is heated or mixed, and the reaction between the reactants creates new molecules and ions. In some cases, the reactants may be changed in their physical state, such as in a gas or liquid form. In other cases, the reactants may remain in the same state and form a new compound, such as in the formation of sodium chloride from sodium and chlorine.
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