Yes, all of these energy output objects can work with a turbine. Turbines are designed to convert energy from a source, such as the wind or flowing water, into useful forms of energy, such as electricity or movement.
What is energy?Energy is an important concept in physics that describes the capacity of a physical system to do work. It is often described as the ability to do work and can be found in many forms, including kinetic energy, potential energy, thermal energy, electrical energy, and chemical energy. Kinetic energy is the energy of motion and is the result of an object's movement. Potential energy is the stored energy of an object due to its position or configuration. Thermal energy is energy contained in the movement of particles and is related to temperature.
This energy can then be used to power a variety of energy output objects, such as water heaters, light bulbs, and fans.
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C5H12(l)+8O2(g)→5CO2(g)+6H2O(g) express answers as intergers
The balanced equation for the reaction of pentane (C5H12) with oxygen gas (O2) to produce carbon dioxide (CO2) and water (H2O) is: C5H12(l) + 8O2(g) → 5CO2(g) + 6H2O(g).
What is reaction?Reaction is the process of responding to a stimulus or situation. It can be physical, emotional, mental, or social. Reactions can vary depending on the individual and the context, and they can be positive or negative. Examples of reactions include feeling anger, joy, sadness, or fear when faced with a situation.
The ratio of reactants to products in this reaction is 1:5:6:8. This means that for every 1 molecule of pentane (C5H12), 5 molecules of carbon dioxide (CO2), 6 molecules of water (H2O), and 8 molecules of oxygen gas (O2) are required. Therefore, the answer to the question is 8, as 8 molecules of oxygen gas (O2) are needed to react with 1 molecule of pentane (C5H12).
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Answer number 4 using question 3 PLEASE HELP
1.4108g of copper will be produced.
Define a displacement reaction.
When a less reactive element is pushed out of a compound that also contains a more reactive ingredient, the result is a displacement reaction. The less reactive element is now pure and left alone following a displacement reaction.
When an atom or group of atoms in a molecule are replaced by another atom, this is referred to as a displacement reaction. A + B + C = A + B + C. When A is more reactive than B, the aforementioned equation holds true.
2Al + 3CuCl2 → 3Cu + 2AlCl3.
Number of moles of Al = 0.4g/27g
= 0.0148moles
2 moles of Al will give 3 moles of Cu.
So, 0,0148moles Al will give 3/2 *0.0148 moles of copper i.e. 0.022moles
Mass of Cu will be 0.022*63.55 i.e. 1.4108g
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Calculate the percent yield of Cl2(g) in the electrolytic decomposition of hydrogen chloride if 25.8 g of HCl produces 13.6 g of chlorine gas: 2 HCl (aq) → Cl2 (g) + H2 (g)
The percent yield of Cl2 in the electrolytic decomposition of HCl is 54.18%.
What is electrolytic decomposition?Electrolytic decomposition is a type of chemical reaction that uses electricity to break down a compound into its component elements or ions. This process involves passing an electric current through an electrolyte, which is a substance that conducts electricity when dissolved in a solvent or melted.
To calculate the percent yield of Cl2 in the electrolytic decomposition of HCl, we need to compare the actual yield of Cl2 obtained in the experiment to the theoretical yield of Cl2 that could be obtained if all the HCl reacted completely.
After balancing,
2 HCl (aq) → Cl2 (g) + H2 (g)
The molar mass of HCl is 36.46 g/mol, so 25.8 g of HCl is equal to 25.8 g / 36.46 g/mol = 0.708 mol of HCl.
According to the balanced equation, 2 moles of HCl should produce 1 mole of Cl2, so the theoretical yield of Cl2 can be calculated as:
Theoretical yield of Cl2 = 0.5 × 0.708 mol = 0.354 mol
The molar mass of Cl2 is 70.90 g/mol, so the theoretical yield of Cl2 in grams is:
Theoretical yield of Cl2 = 0.354 mol × 70.90 g/mol = 25.1 g
The actual yield of Cl2 obtained in the experiment is 13.6 g.
The percent yield of Cl2 can be calculated as:
Percent yield = (Actual yield / Theoretical yield) × 100%
Percent yield = (13.6 g / 25.1 g) × 100%
Percent yield = 54.18%
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Write a symbolic notation for atom with 5 protons and 4 neutron
Answer:
it's Beryllium
Explanation:
Calcium hydroxide and hydrogen gas are produced by reaction of calcium hydride and water
Answer:
The reaction between calcium hydride (CaH2) and water (H2O) can be described by the following equation:
CaH2 + 2H2O → Ca(OH)2 + 2H2
This reaction produces calcium hydroxide (Ca(OH)2) and hydrogen gas (H2). The number of fluorine atoms is not specified in this equation.
Explanation:
Who knows and who doesn't know and who knows and who doesn't know and who knows because I thought that no one would even be happy to answer you
How many moles of Li2SO4 are in 9. 40×1024 formula units?
There are 15.6 moles of Li2SO4 in 9.40 x 10^24 formula units after dividing by Avogadro's number.
The given problem involves converting the number of formula units of Li2SO4 to the corresponding number of moles. This conversion requires the knowledge of Avogadro's number, which is the number of particles (atoms, molecules, or ions) in one mole of a substance.
To calculate the number of moles of Li2SO4, we first divide the given number of formula units (9.40 x 10^24) by Avogadro's number (6.022 x 10^23 formula units/mol) to get the number of moles (15.6 mol).
The mole is a unit of measurement used in chemistry to express amounts of a substance. One mole of any substance contains the same number of particles as there are atoms in 12 grams of carbon-12. So, the mass of one mole of a substance is equal to its molecular weight in grams.
In this problem, the mass of Li2SO4 is not given, so we cannot calculate the mass of 15.6 moles of Li2SO4. However, we can say that 15.6 moles of Li2SO4 contain 9.40 x 10^24 formula units.
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which of the following conditions would increase the rate of diffusion within cells? (check all possible correct options)a. increas temperature
b. large concentrate gradient
c. solute of large size
d. lack of carrier proteins
e. solute of small size
The circumstances listed below would accelerate diffusion within cells: 1. Boost the temperature. b. High concentration gradient e.
The spontaneous movement of particles from a high concentration area to a low concentration area is known as diffusion. In gases, liquids, and solids, it happens spontaneously as a passive transport mechanism. Temperature, concentration gradient, particle size, and the existence of barriers or impediments are some of the variables that affect the rate of diffusion. Several biological activities, such as the flow of gases into and out of cells, the transportation of nutrients and waste products across cell membranes, and the control of ion concentrations in cells, all depend on diffusion. Diffusion theory is fundamental to many disciplines, including chemistry, biology, physics, and engineering.
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An aqueous solution contains 5.0 % NaCl by mass.
Part A
Calculate the molality of the solution.
Part B
Calculate the mole fraction of the solution.
Molality of an aqueous solution of 5.0% NaCl will be 0.842 m. Mole fraction of NaCl is 0.014 and mole fraction of water is 0.98.
How do you calculate the molality of 5.0% NaCl solution?To calculate molality, we first calculate the mass of NaCl in the solution which is, 100 x 5/100% = 5g.
We then calculate the moles of NaCl in the solution,
5/58.45 = 0.08 (Molar mass of NaCl = 58.45)
Mass of water in the solution = 100g - 5g = 95g x 1/1000 = 0.095
Therefore, molality can now be calculated as,
Molality = 0.08/0.095 = 0.842 m.
How do you calculate the mole fraction of the solution?To calculate the mole fraction of the solution, we first calculate the moles of water in the solution,
Moles of water = 95/18 = 5.27 mol of water (Since molar mass of water = 18)
Now, mole fraction of NaCl = 0.08/5.27 + 0.08 = 0.014
Mole fraction of water = 5.27/5.27 + 0.08 = 0.098
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Lightning is actually an enormous display of the concept of
Lightning is actually an enormous display of the concept of Electro hydrodynamics.
What is lightning?Lightning is a sudden electrostatic discharge that occurs within a thunderstorm, creating a flash of light and a loud thunderclap. It is caused by the buildup and release of electrical energy in the atmosphere, typically between clouds, or between a cloud and the ground.
It is a natural electrostatic discharge called lightning occurs when two electrically charged regions, one in the atmosphere and one on the ground, momentarily neutralize one another. This results in the instantaneous release or discharge of an energy equivalent to one gigajoule.
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Question 11 of 20:
Select the best answer for the question.
11. A gray dog pulled a sled with a mass of 25 kilograms 100 meters. A brown dog
pulled a sled with the same mass across the same distance, but in half the time.
Which statement compares the two correctly?
O A. Both dogs used the same amount of work, and the brown dog used less power.
O B. Both dogs did the same amount of work, and the brown dog used more power.
O C. The brown dog did more work and used less power.
O D. The brown dog did less work, and both dogs used the same amount of power.
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Both dogs used the same amount of work, and the brown dog used less power.
What is the difference between work and power?Work and power are both concepts in physics that are related to the transfer of energy, but they are not the same thing. Work refers to the amount of energy transferred to or from an object as a result of a force acting on it over a certain distance, whereas power refers to the rate at which work is done.
In other words, work is a measure of the total energy transferred, while power is a measure of how quickly that energy is transferred. Mathematically, work is defined as the product of the force applied to an object and the distance over which that force is applied, while power is defined as the rate of doing work, or the amount of work done per unit time.
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Which statement best describes the difference between a physical change and a chemical change? Responses A chemical change results in a new element being formed, and a physical change results in a new compound being formed. A chemical change results in a new element being formed, and a physical change results in a new compound being formed. A physical change produces a new element, and a chemical change results in a bond breaking between atoms. A physical change produces a new element, and a chemical change results in a bond breaking between atoms. A chemical change does not result in a new substance being formed, whereas a physical change does. A chemical change does not result in a new substance being formed, whereas a physical change does. A physical change is a change from one state of matter to another; a chemical change results in a new substance formed.
A physical change is a change to a substance that does not result in the formation of a new substance.
What is formation ?Formation is the process of creating something new. It can refer to the creation of an organization, structure, or system. It is often used in business, when a company is established, or when a new product or service is created. It can also refer to the development of an idea or concept, such as a strategic plan or marketing campaign. Formation is an essential part of any entrepreneurial venture, and involves the development of a plan for a business, including the selection of personnel, market research, and the development of a financial structure. Formation is also used to refer to the development of a team or organization, and the process of creating and maintaining a cohesive and effective team of individuals.
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The molar mass of hydrogen gas is 2 g/mol. The molar mass of oxygen gas is 32 g/mol. When the reaction starts with 64 g of oxygen and a sufficient quantity of hydrogen, how many moles of water are produced? (1 point)
O 8
O 18
O 2
O 4
According to the stoichiometry of the reaction for formation of water according to the given condition, 4 moles of water are produced.
What is stoichiometry?It is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.
In the given reaction, 32 g oxygen gives 36 g water, thus 64 g oxygen gives 64×36/32=72 g which is equivalent to 72/18=4 moles of water.
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What is the importance of the pH scale in determining the acidity or basicity of a solution?
Answer:
because it provides a numerical value for the concentration of hydrogen ions in a solution.
Explanation:
Answer:
The pH scale is important in determining the acidity or basicity of a solution because it provides a numerical value for the concentration of hydrogen ions in a solution. The pH of a solution ranges from 0-14, with values below 7 being acidic, values above 7 being basic, and 7 being neutral.
Explanation:
A cylinder, with a piston pressing down with a constant pressure, is filled with 1.90 moles of a gas (n1), and its volume is 49.0 L (V1). If 0.500 mole of gas leak out, and the pressure and temperature remain the same, what is the final volume of the gas inside the cylinder? Express your answer with the appropriate unit
Answer:
the final volume of the gas inside the cylinder after 0.500 mole has leaked out is 37.0 L.
Explanation:
The ideal gas law states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature. Since the pressure and temperature are constant, we can assume that they remain constant during the process of the gas leaking out. So, the initial state (1) and the final state (2) of the gas can be described as follows:
(1) PV1 = n1RT
(2) PV2 = (n1 - 0.500)RT
Now, we can find the final volume of the gas by substituting the known values into the equation and solving for V2:
V2 = (n1RT)/P = (1.90 * 8.31 * T)/P
V2 = (1.90 * 8.31 * T)/P = (1.90 * 8.31 * T)/P = 49.0
V2 = 49.0 L * (1.90 - 0.500) / 1.90
V2 = 37.0 L
A liquid sample of water (density = 0.9971 g/mL) has a volume of 10.00 mL. The water is allowed to freeze to become ice (density = 0.934 g/mL). What will be the volume of the
ice cube?
can anyone help with this?
Combination reaction, decomposition reaction , single displacement reaction and double displacement reactions are taking place in picture .
Define combination reaction.
When two or more compounds combine to create a single new substance, this reaction is called a combination reaction. Synthesis reactions are another name for combination reactions. A+B⇒AB is the standard format for a combination reaction. Two components combining to create a compound is an example of a combination reaction.
When a less reactive element is pushed out of a compound that also contains a more reactive ingredient, the result is a displacement reaction. Decomposition reactions occur when complex chemical entities split apart into smaller components. Decomposition reactions often demand energy input. For instance, the thermal breakdown of potassium chlorate (KClO3) is a typical technique used in laboratories to generate oxygen gas.
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define Qc, and how Qc is used (in comparison to Kc) to determine the direction in which the equilibrium will shift, resulting in changes to the concentrations of reactants and products
Answer:
Explanation:
"Qc" stands for "Reaction Quotient Concentration" and represents the ratio of the concentrations of products raised to their stoichiometric coefficients, divided by the ratio of the concentrations of reactants raised to their stoichiometric coefficients at a given point in a chemical reaction.
Qc is used in comparison to "Kc," the "Equilibrium Constant Concentration," to determine the direction in which a chemical reaction at equilibrium will shift. If Qc is less than Kc, the reaction will shift in the direction that increases the concentration of products, so as to reach a new state of equilibrium with Kc. Conversely, if Qc is greater than Kc, the reaction will shift in the direction that increases the concentration of reactants, so as to reach a new state of equilibrium with Kc.
In other words, if Qc is equal to Kc, the reaction is at its state of equilibrium, and any changes to the concentrations of reactants or products will cause the reaction to shift until a new state of equilibrium is reached with the updated Kc value. If Qc is not equal to Kc, the reaction will shift until it reaches a state of equilibrium with the updated Kc value.
How many grams are in 1. 50 moles of KMnO4?
A. 165. 06
B. 660. 24
C. 237. 06
D. 484. 29
After calculation of molar mass, The amount of grams in 1.50 moles of KMnO4 is 237.06 hence its is the Option C
The question asks to calculate the mass of 1.50 moles of KMnO4. To do this, we need to know the molar mass of KMnO4, which is calculated by adding up the atomic masses of each element in the compound, taking into account their respective number of atoms. For KMnO4, the molar mass is 39.10 + 54.94 + 4(16.00) = 158.03 g/mol.
Once we have the molar mass, we can use the formula mass = number of moles x molar mass to find the mass of 1.50 moles of KMnO4. Substituting the values, we get:
mass = 1.50 moles x 158.03 g/mol = 237.06 g
Therefore, the answer is (C) 237.06 g.
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Fracture zones are cracks on the ocean floor that horizontally offset mid-ocean ridges. Fracture zones typically run perpendicular to mid-ocean ridges. The diagram below shows two tectonic plates moving apart. One plate is dark blue, and the other is light blue. Several fracture zones are shown at places where parts of the same tectonic plate are moving in the same direction but at different speeds.
Fracture zones are areas of weakness in the oceanic crust, and they form as a result of the stress of plate tectonics. They are usually narrow and can be up to several hundred kilometers in length.
What is the kilometers ?Kilometers (km) are a unit of measurement for length or distance. One kilometer is equivalent to 1000 meters and is equal to 0.6214 miles. Kilometers are commonly used to measure long distances, such as the length of a road or the distance between two cities. In science, kilometers are often used to measure the size of large objects, such as the diameter of planets, or the distance between two stars.
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Length: 2:00:00
ge 1:
2 3
5
I
Silas Calderon: Attempt 1
What do the domains Bacteria and Archaea have in common?
Prokaryotes, single-celled microorganisms without nuclei, include both bacteria and archaea.
Describe prokaryotes.
Prokaryotes are creatures without a nucleus or other organelles in their cells. Bacteria and archaea, two separate groupings of prokaryotes with allegedly independent evolutionary histories, are separated into. The majority of prokaryotes are tiny, single-celled creatures with a straightforward structure.
Both of them are microscopic, single-celled organisms with a wide range of forms. Bacteria and archaea both contain only one circular chromosome and no membrane-bound organelles. Archaea can contain flagella to help with movement, just like bacteria may.
Although there are many different shapes that bacteria and archaea can take, cocci, bacilli, and spirilli are the three that are most frequently found. In comparison to ordinary eukaryotes, bacteria and archaea are both typically tiny organisms.
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Given the reactant amounts specified in the chemical equation, determine the limiting reactant for each:
a.
b.
c.
5. For each reaction in the problem above, determine the amount in moles of excess reactant that remains.
Information 1: There are 2.0 moles of HCl. It contains 2.5 moles of NaOH.
Data 2 reveals a 2.5 mole concentration of zinc.
What is limiting agent?HCl has a molecular weight of six.
Fe(OH)3 makes up 4.0 moles, according to Data 3.
It contains 6.5 moles of H2SO4.
Answer (A) (A)
Below is a display of the suggested response.
HCl+NaOH→NaCl+H2O
1 mole of HCl and 1 mole of NaOH combine in the procedure described above.
To calculate how many moles of NaOH are needed to react with 2 mol of HCl, see the formula below.
NaOH=1mol1mol×2mol=2mol
NaOH is, however, just 2.5 moles accessible.
NaOH therefore acts as the excess reactant and HCl as the limiting reactant.
In light of this, HCl is the reaction's limiting reactant.
In response (B),
Below is a display of the suggested response.
Zn+2HCl→ZnCl2+H2
One mole of zinc reacts with two moles of HCl in the mechanism described above.
Thus, it can be determined from the calculations below how many moles of HCl are needed to react 2.5 mol of zinc.
HCl=2mol1mol×2.5mol=5mol
In contrast, there are 6 moles of HCl available.
The excess reactant in the reaction is therefore HCl, whereas the limiting reactant is Zn.
Consequently, Zn serves as the reaction's limiting reactant.
Answer (C) (C)
Below is a display of the suggested response.
2Fe(OH)3+3H2SO4→Fe2(SO4)3+6H2O
In the reaction mentioned above, 3 moles of H2SO4 and 2 moles of Fe(OH)3 react.
Thus, the calculation below determines how many moles of H2SO4 are necessary for four moles of Fe(OH)3 to react entirely.
H2SO4=3mol2mol×4mol=122mol=6mol
However, there is a limited supply of H2SO4 is 6.5 mol.
The limiting reactant in the reaction is therefore Fe(OH)3, while the excess reactant is H2SO4.
In light of this, Fe(OH)3 is the reaction's limiting reactant.
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7.
(4 points) Determine the length in m of a 40. ft city bus given
that 1 ft = 30.48 cm and 1 cm = 0.01 m. Express your answer to the
correct number of significant figures.
The length of a 40ft city bus in metres is 12.2 metres.
How to convert length?Length is the distance measured along the longest dimension of an object.
Length can be measured in metres, centimetres, inches or yards. According to this question, the length of a city bus is 40 ft.
The unit of conversion of feet to metres is as follows:
1 foot = 0.305 metre
This means that 40 ft will be equivalent to 40 × 0.305 = 12.2 metres.
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please name these compounds
1) 1-Phenyl propan -1-ol
2) 3-methyl butanal
3) 2-Cyano ethene
4) 4 - bromo-2-methyl pent -3- one
5) 3,5 -dihydroxy -3-enoic acid
What is the IUPAC names of the compounds?The IUPAC nomenclature has to do with the manner that we use in chemistry to be able to name compounds. These are the rules for the naming of compounds that have been put together by the International Union of Pure and applied chemistry.
In these rules, we would have to find out the root of the compound name by counting up the number of the chains that we have and then noting the substituents that we have on the chains.
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37. Which of the following is an example of
speed?
a. 100 m/s²
b. 500 m/s
c. 200 m/s West
d. 250 m
Answer:
b. 500 m/s
Explanation:
A scientist is trying to discover information about an unknown metal in a compound. The formula for the compound is believed
to be XBr, where X is the unknown metal. The scientist determined that a 4.742 g sample of this compound contains
4.877 x 10-2 mol Br. Calculate the atomic mass of the unknown metal, X.
atomic mass=
What is the identity of the metal? Provide the name or symbol of the element.
metal:
amu
Atomic mass of X is 813.022 g/mol and the element with an atomic mass closest to 813.022 g/mol is silver, Ag.
What is Atomic mass?
Atomic mass is the mass of an atom of a particular element, measured in atomic mass units (amu). It is equal to the sum of the number of protons and neutrons in the nucleus of an atom.
molar mass = (mass of Br) / (number of moles of Br)
molar mass = 4.742 g / (4.877 x 10-2 mol) = 974.74 g/mol
The molar mass of bromine is 80.904 g/mol, so the molar mass of the unknown metal X can be calculated as:
molar mass of X = molar mass of compound - molar mass of Br
molar mass of X = 974.74 g/mol - (3 * 80.904 g/mol) = 813.022 g/mol
The atomic mass of X can be calculated as the molar mass of X divided by the number of moles of X in the compound, which is 1:
atomic mass of X = molar mass of X / (number of moles of X)
atomic mass of X = 813.022 g/mol / 1 = 813.022 g/mol
Since the atomic mass of X is 813.022 g/mol, we can look up the element with that atomic mass in the periodic table. The element with an atomic mass closest to 813.022 g/mol is silver, Ag, with an atomic mass of 107.87 g/mol.
Therefore, Atomic mass of X is 813.022 g/mol and the element with an atomic mass closest to 813.022 g/mol is silver, Ag.
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Calculate the number of atoms in 0.25 mol of silicon
Answer: 1.5 x 10^23 atoms
Explanation:
Answer:
1.505 x 10^23 atoms in 0.25 moles of silicon.
Explanation:
The number of atoms in 0.25 moles of silicon can be calculated as follows:
1 mole of any substance contains Avogadro's number of atoms. Avogadro's number is approximately 6.022 x 10^23 atoms/mole.
So, if we have 0.25 moles of silicon, the number of atoms can be calculated as follows:
0.25 moles x (6.022 x 10^23 atoms/mole) = 1.505 x 10^23 atoms
Therefore, there are approximately 1.505 x 10^23 atoms in 0.25 moles of silicon.
when 12.0 g of hydrogen reacts with oxygen, how many grams of water are produced?
Answer:
12.0 grams of hydrogen would produce 12.0 grams of water.
Explanation:
The reaction between hydrogen and oxygen to form water can be represented as follows:
2H2(g) + O2(g) -> 2H2O(l)
From the equation, it can be seen that for every 2 grams of hydrogen, 1 gram of oxygen is required to produce 2 grams of water. Therefore, if 12.0 grams of hydrogen reacts with oxygen, 12.0/2 = 6.0 grams of oxygen would be required. This amount of oxygen would produce 2 * 6.0 = 12.0 grams of water.
Answer:
Explanation:
the grams of water produced= 44 grames
In science class, savannah measures the temperature of a liquid to be celsius. Her teacher wants her to convert the temperature to degrees fahrenheit. What is the temperature of savannah's liquid to the nearest degree fahrenheit?.
The temperature of savannah's liquid to the nearest degree Fahrenheit is 93.1
Temperature conversion formulas are defined as the conversion formulas for changing the value of temperature from one unit to another. They're colorful distinct temperature conversion styles. Kelvin, Celsius, and Fahrenheit are the most generally used scales for temperature dimension.
In science class, Savannah measures the temperature of a liquid to be 34° Celsius. Her teacher wants her to convert the temperature to degrees Fahrenheit.
The general formula to convert Celsius into Fahrenheit is
[tex]F = (C*\frac{9}{5}) +32[/tex]
Substitute C=34°,
[tex]F = (C*\frac{9}{5}) +32\\\\F = (34*\frac{9}{5}) +32\\\\F = (34*\ 1.8}) +32\\\\F = 61.2 +32\\\\F = 93.1[/tex]
Therefore, The temperature of Savannah's liquid to the nearest degree Fahrenheit is 93.1°.
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The diagram above is a molecular model of a gaseous diatomic element that is just above its boiling point. Intermolecular forces between the gas molecules will cause them to condense into the liquid phase if the temperature is lowered. Which of the following best describes how the model is limited in its depiction of the phenomenon?
Based on the model shown, the model is limited in its depiction of the condensation of gases as it does not show how the temporary fluctuating dipoles of the molecular electron clouds result in a net force of attraction between the molecules.
The correct option is D.
What are the intermolecular forces in gases?Intermolecular forces are the forces that exist between the molecules of substances such as gases, liquids, and solids. The intermolecular forces in gases are negligible.
Dipole-dipole interactions, London dispersion forces (commonly referred to as van der Waals forces), and hydrogen bonds are the three main types of intermolecular interactions.
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How many molecules (or formula units) are in each sample? Express your answer in molecules to three significant figures.
Part A: 60.1 g H2O
N = ______ molecules H20
Part B: 127 mg Na3PO4
N = ______ molecules Na3PO4
Part C: 29.6 kg C6H12O6
N = _______ molecules C6H12O6
Part D: 46.9 g N2
N = _______ molecules N2
The Avogadro constant, which is 6.022 x 10²³ molecules/mol, must be utilized in order to determine the number of formula units or molecules present in a sample.
The Avogadro constant is what?The number of entities (such as atoms, molecules, or ions) that make up one mole of a substance is represented by the Avogadro constant, a fundamental physical constant. The letter "NA" stands for the Avogadro constant value, which is approximately 6.022 x 10²³ entities per mole. This indicates that a substance has exactly 6.022 x 10²³ entities in a single mole.
Part A:
Molar mass of H₂O = 18.015 g/mol
Number of moles of H₂O = 60.1 g / 18.015 g/mol
= 3.33 mol
Number of molecules of H₂O = 3.33 mol x 6.022 x 10²³ molecules/mol
= 2.00 x 10²⁴ molecules
N = 2.00 x 10²⁴ molecules H₂O
Part B:
Molar mass of Na₃PO₄ = 163.94 g/mol
Number of moles of Na₃PO₄ = 127 mg / 1000 mg/g / 163.94 g/mol
= 7.73 x 10⁻⁴ mol
Number of formula units of Na₃PO₄ = 7.73 x 10⁻⁴ mol x 6.022 x 10²³ formula units/mol = 4.65 x 10²⁰ formula units
N = 4.65 x 10²⁰ formula units Na₃PO₄
Part C:
Molar mass of C₆H₁₂O₆ = 180.16 g/mol
Number of moles of C₆H₁₂O₆ = 29.6 kg / 1000 g/kg / 180.16 g/mol
= 0.164 mol
Number of molecules of C₆H₁₂O₆ = 0.164 mol x 6.022 x 10²³ molecules/mol = 9.88 x 10²² molecules
N = 9.88 x 10²² molecules C₆H₁₂O₆
Part D:
Molar mass of N₂ = 28.02 g/mol
Number of moles of N₂ = 46.9 g / 28.02 g/mol
= 1.67 mol
Number of molecules of N₂ = 1.67 mol x 6.022 x 10²³ molecules/mol
= 1.00 x 10²⁴ molecules
N = 1.00 x 10²⁴ molecules N₂
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