how many moles of cac2 are needed to react completely with 49.0 g h2o
Answers
To react completely with 49.0 g H₂O, you would need approximately 1.36 of CaC₂.
To calculate the number of moles of CaC₂ required, we need to convert the given mass of H₂O to moles using the molar mass of water (H₂O). The molar mass of H₂O is 2(1.008 g/mol) + 16.00 g/mol = 18.02 g/mol.
Moles of H₂O = Mass of H₂O / Molar mass of H₂O
Moles of H₂O = 49.0 g / 18.02 g/mol ≈ 2.72 mol
The balanced chemical equation for the reaction between CaC₂ and H₂O is:
CaC₂ + 2H₂O → Ca(OH)₂ + C₂H₂
Moles of CaC₂ = Moles of H₂O / 2
Moles of CaC₂ = 2.72 mol / 2 ≈ 1.36 mol
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Related Questions
10. When a substance is analyzed using an electron microscope, it is found
to contain only one type of atom.
This substance is
A an element
B. a mixture
C. neither of the other three
D. a compound
Answers
plzzzzzzzzzzzzz help i will mark you brainlest true orfalse/Air masses are responsible for the weather in a region
Answers
Answer:
True
Explanation:
Answer:
It is true!
I hope this helps. Have an awesome day <3
A machine uses filtration to separate a component from orange juice. Which component does the machine most likely separate from the mixture?(1 point)
water
water
pulp
pulp
sugar
sugar
pigment
Which method of separation would be most appropriate for separating a mixture of water and alcohol?(1 point)
chromatography
chromatography
distillation
distillation
filtration
filtration
evaporation
Which method separates components of a mixture according to how quickly the particles travel through a medium?(1 point)
chromatography
chromatography
filtration
filtration
evaporation
evaporation
distillation
The boiling point of water is 100ºC. The boiling point of acetone is 56ºC. Which statement about distilling a mixture of acetone and water is correct?(1 point)
Acetone remains in the original container.
Acetone remains in the original container.
Acetone is captured and cooled.
Acetone is captured and cooled.
Water is collected as it leaves the mixture.
Water is collected as it leaves the mixture.
Water will vaporize from the mixture before acetone.
Substance A and substance B are mixed together. To separate the mixture, water is added, and substance A is filtered out. Then, the remaining liquid is heated to remove the water, leaving a residue of substance B. Which statement about substance A and substance B could be correct?(1 point)
Substance A is rice, and substance B is sugar.
Substance A is rice, and substance B is sugar.
Substance A is sand, and substance B is alcohol.
Substance A is sand, and substance B is alcohol.
Substance A is alcohol, and substance B is salt.
Substance A is alcohol, and substance B is salt.
Substance A is sugar, and substance B is instant coffee.
Answers
Pulp
distillation
chromatography
Acetone is captured and cooled.
Substance A is rice, and substance B is sugar.
To separate the components of a mixture the substances to be separated must differ in a given physical property.
In chemistry, there are diverse separation techniques used to separate the components of a mixture. Separation depends on differences in a given physical property such as boiling point, solubility in a solvent, difference in particle size etc.
Filtration can be used to separate a solid from a liquid hence it can be used to separate pulp from orange juice.
To separate water and alcohol, distillation is used because such a separation depends on the difference in the boiling points of water and alcohol. Water boils at a higher temperature than alcohol hence the mixture can be separated by distillation.
Chromatography is a method of separation that is dependent on how quickly a the components of a mixture move through a stationary phase.
Acetone has a lower boiling point than water hence it collected first and cooled before water.
Clearly, substance A must be a solid since it is filtered out after adding water. Substance B must be a water soluble substance which can be recovered from water by evaporation to dryness. Hence substance A is rice, and substance B is sugar.
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list 3 ways to increase the solubility of a liquid
Answers
Answer:
Three ways I can come up with are increasing the temperature, increased the amount of solvent, and using a solvent with similar polarity as the solute.
Explanation:
This protein takes oxygen from hemoglobin in order to
O break down stored fats for energy.
O transport water-insoluble lipids in the bloodstream.
transport oxygen from the lungs to tissues around the body.
O store it for muscle cells.
Answers
Answer:
i'm pretty sure it's 'transport oxygen from the lungs to tissues around the body'
Answer:
Transportation of Oxygen from Lungs to Tissues
The concentration of an H2C2O4 solution is determined by titrating it with a 0.1968 M solution of permanganate. The balanced net ionic equation for the reaction is shown below. 2 MnO4-(aq) + 5 H2C2O4(aq)+6 H3O+(aq)2 Mn2+(aq) + 10 CO2(g)+14 H2O(l) In one experiment, 24.98 mL of the 0.1968 M MnO4- the solution is required to react completely with 20.00 mL of the H2C2O4 solution. Calculate the concentration of the H2C2O4 solution.
Answers
Answer:
0.6145M
Explanation:
Based on the chemical equation, 2 moles of MnO₄⁻ reacts with 5 moles of H₂C₂O₄.
To solve this problem, we need to find moles of MnO₄⁻, with the chemical equation the moles of H₂C₂O₄ and, the concentration of this solution.
Moles MnO₄⁻:
24.98mL = 0.02498L * (0.1968mol / L) = 4.916x10⁻³ moles MnO₄⁻
Moles H₂C₂O₄:
4.916x10⁻³ moles MnO₄⁻* (5 moles H₂C₂O₄ / 2 moles MnO₄⁻) =
0.01229 moles H₂C₂O₄
Molarity H₂C₂O₄:
0.01229 moles H₂C₂O₄ / 0.0200L =
0.6145MA solution of the ionic salt
Lihco3 would have ____ pH.
ANSWER : BASIC
Answers
Hope this helps
A solution of the ionic salt Lihco3 would have 11.3 pH.
What is ionic salt ?In chemistry, salt exists as a chemical compound consisting of an ionic group of positively charged cations and negatively charged anions, which results in a combination with no net electric charge. A common example stands table salt, with positively charged sodium ions and negatively charged chloride ions.
The fragment ions in a salt compound can be either inorganic, such as chloride (Cl−), or organic, such as acetate (CH3CO−2). Each ion can be either monatomic, such as fluoride (F−), or polyatomic, such as sulfate (SO2−4).
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based on this, would you expect mercury to currently have a molten interior? explain your reasoning.
Answers
It is expected that mercury would have a molten interior based on its small size, rapid rotation, and density. Mercury is one of the four inner planets in our solar system.
It is the smallest planet in our solar system and the one closest to the Sun. Mercury's diameter is just 40% of the Earth's diameter, making it the smallest planet in our solar system. It has a rocky surface that is heavily cratered and has numerous cliffs. Additionally, Mercury has a molten core that accounts for roughly 85 percent of its volume.Mercury's rapid rotation and density suggest that it has a molten interior. Mercury rotates three times on its axis for every two times it orbits the Sun.
This leads to a considerable amount of friction that warms the interior of the planet. Mercury's density is also quite high, indicating that the planet's interior is made up of metals such as iron, nickel, and sulfur, which have relatively high melting points. As a result, the planet's core is assumed to be molten.The above mentioned facts lead to the conclusion that Mercury would have a molten interior.
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what three geologic events occur due to movement of material within the earth
Answers
Answer:
Convection currents are a circular current caused by the difference in temperatures from the bottom to the top of the mantle. It is because of these currents that the plates of the Earth have moved in the past and are moving today. These plate movements cause earthquakes, mountain building, and volcanism.
Explanation:
Describe what happens to the light ray when it travels through air then into water
Answers
Answer:
when light travels into the water from the air, it slows down (because water is a more dense substance) which causes it to change direction and makes it seem to bend. this is called refraction. mediums that are more dense have a higher refraction index. for example, air has a ri of 1, but water is about 1.33.
Me pueden ayudar en esto Litio (Li) y Oxígeno (O) necesito saber Diferencia de Electronegatividad, Tipo de Enlace según Tabla 1, Porcentaje de carácter iónico según Tabla 2
Answers
Answer:
Ver explicacion
Explanation:
El litio es un metal y el oxígeno no es un metal.
La electronegatividad del litio es 0,98 mientras que la electronegatividad del oxígeno es 3,44.
La diferencia de electronegatividad entre el oxígeno y el litio es 3,44 - 0,98 = 2,46
Basado en esta amplia diferencia en electronegatividad, el enlace entre el oxígeno y el litio es un enlace iónico.
El porcentaje de carácter iónico del enlace se obtiene de;
Porcentaje de carácter iónico = 100 * (1-exp (-0,25 * (Electronegatividad del elemento A-Electronegatividad del elemento B) ^ 2))
Porcentaje de carácter iónico = 100 * (1-exp (-0,25 * (2,46) ^ 2)
Porcentaje de carácter iónico = 77,97%
How many atoms of titanium are there in 0.820 mole of each of the following? 1st attempt Part 1 (1point) ilmenite, FeTiO 3
Ti atoms Part 2 titanium(IV) chloride Ti atoms Part 1 ilmenite, FeTiO 3
Ti atoms Part 2 titanium(IV) chloride Ti atoms
Answers
To determine the number of atoms of titanium in 0.820 mole of each compound, we need to use Avogadro's number, which is 6.022 x 10²³ atoms/mol.
1. Ilmenite, FeTiO3:
In 1 mole of FeTiO3, there is 1 mole of titanium atoms.Therefore, in 0.820 mole of FeTiO3, there are 0.820 moles of titanium atoms.The number of titanium atoms in 0.820 mole of ilmenite is 0.820 x 6.022 x 10²³ atoms.2. Titanium(IV) chloride, TiCl4:
In 1 mole of TiCl4, there is 1 mole of titanium atoms.Therefore, in 0.820 mole of TiCl4, there are 0.820 moles of titanium atoms.The number of titanium atoms in 0.820 mole of titanium(IV) chloride is 0.820 x 6.022 x 10²³ atoms.Thus, the number of titanium atoms in 0.820 mole of ilmenite is 4.917 x 10²³ atoms, and the number of titanium atoms in 0.820 mole of titanium(IV) chloride is 4.917 x 10²³ atoms.
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Both plant and animal cells contain mitochondrion however they are not in equal amounts. Between the cheek and onion cells, which one do you think would contains the greater amount of mitochondrion and why?
Answers
Answer:
cells, like plants and animals, also have membrane-bound nuclei and organelles (e.g., mitochondria, cytoplasmic curriculum, lysosomes). Cheek cells, like other squamous cells in animals, appear scale-like under the microscope.
Hope this helps!! if it does...
Plants and animal cell also have membrane-bound nuclei and organelles (e.g., mitochondria, cytoplasmic curriculum, lysosomes). Cheek cells, like other squamous cells in animals, appear scale-like under the microscope.
What is cell?Cell is defined as the base of life as it is the structural as well as functional unit of life. Cell is made up of pre existing cells and the cell contain various cell organelles such as mitochondria, endoplasmic reticulum, ribosomes, golgi appratus, nucleus, and cytoplasm.
Basically, cell is of two type one in prokaryotic and another one is eukaryotic. The prokaryotic cell is known as pre mature cells as they do not contain cell organelles and eukaryotic cell are known as advanced and developed cells as they contain several cell organelles.
The unicellular animals are made up of single cell and all the functions carried out in a single cell like amoeba and multicellular organisms are made up of multiple cells and there is specific cell for specific functions.
Therefore, Plants and animal cell also have membrane-bound nuclei and organelles (e.g., mitochondria, cytoplasmic curriculum, lysosomes). Cheek cells, like other squamous cells in animals, appear scale-like under the microscope.
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If an ideal gas at a constant temperature is initially at a pressure of 3.8 atm and is then allowed to expand to a volume of 5.6 L and a pressure of 2.1 atm, what is the initial volume of the gas?
Answers
Answer:
The most common example is the molar volume of a gas at STP (Standard Temperature and Pressure), which is equal to 22.4 L for 1 mole of any ideal gas at a temperature equal to 273.15 K and a pressure equal to 1.00 atm.If an ideal gas at a constant temperature is initially at a pressure of 3.8 atm and is then allowed to expand to a volume of 5.6 L and a pressure of 2.1 - 18914… ... of 5.6 L and a pressure of 2.1 atm, what is the initial volume of the gas? ... An ideal gas is at a pressure of 1.4 atm and has a volume of 3 L.
Explanation:
I hope I help :)
Create an element card that has the following information:
Atomic Number
Atomic Mass
Chemical Symbol
Name of the Element (in English and 1 other language)
A drawing that would symbolize that element (should relate in some way to the uses of the element.)
please please please helpppppppppppppppp
Answers
Answer:
Atomic number:6
Atomic mass:12.011
Chemical symbol:C
Name of element: Carbon, Carbone (french)
Image is in my explanation
Explanation:
would a mix of ki and na2so3 perform the same reduction and precipitation of copper(ii) as a mix of nai and na2so3 ?
Answers
No, a mixture of KI and Na2SO3 would not perform the same reduction and precipitation of copper(II) as a mixture of NaI and Na2SO3. This is because the reducing power of the two mixtures is different due to the different nature of the cations (K+ vs Na+).
What is Reduction?
Reduction is a chemical process in which a substance gains electrons and undergoes a decrease in oxidation state. It is a key aspect of many chemical reactions, including combustion, corrosion, and the synthesis of organic compounds.
In the reduction of copper(II) to copper(I), iodide ion (I-) acts as the reducing agent, which gets oxidized to iodine (I2). In the presence of sodium sulfite (Na2SO3), the iodine reacts with sulfite ion (SO32-) to form iodide ion and sulfate ion (SO42-), while copper(I) ions get precipitated as copper(I) sulfite.
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pls help because im not smart.-.
Answers
Answer:
Im not smart either but im pretty sure its D because its a pie chart so its asking how many and pie charts tell you how much something has
Explanation:
A solution containing 0.0158 M a diprotic acid with the formula H2A and 0.0226 M of its salt Na2A. The K2 values for the acid are 1.20 x 10¯2 (Ka2) and 5.37 × 10¯7 (Ka2). What is the pH of the solution?
Answers
The pH of the solution is 6.11.
The first step is to write out the chemical equations for the ionization of the diprotic acid, H2A. The equations are:
\(H_2A \rightleftharpoons H^+ + HA^- \ \ \ \ (K_{a1})$$HA^- \rightleftharpoons H^+ + A^{2-} \ \ \ \ (K_{a2})$\)
The equilibrium constant for the second ionization, Ka2, is given as 5.37 × 10⁻⁷. We can use the equation for Ka2 to calculate the concentration of H+ in the solution:
\(K_{a2} = \frac{[H^+][A^{2-}]}{[HA^-]}$$[H^+] = \frac{K_{a2}[HA^-]}{[A^{2-}]}$[H^+] = \frac{5.37 \times 10^{-7}(0.0226)}{0.0158}$$[H^+] = 7.7 \times 10^{-7} \ M$\)
Now, we can use the equation for the pH of a solution to calculate the pH of the solution:
pH = -log[H+]
pH = -log(7.7 × 10⁻⁷)
pH = 6.11
Therefore, the pH of the solution is 6.11.
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which type of molecules are transported by aquaporins
Answers
Answer:
Water,
Explanation:
Aquaporins are channels in the membrane that allow water to pass through via osmosis. Aquaporins are unique among the transporters because they are always open. Other channel transporters and carrier transporters open and close, depending on the circumstances.
Identify the type of reaction
CaCl2 + AgNO3 --> AgCl + Ca(NO3)2
Answers
Answer:
It is Double Replacment
Explanation:
They traded bonds.
Balanced Equation is 2AgNO3 + CaCl2 = 2 AgCl +1Ca(NO3)2
Which is not on a station model? *
precipitation
wind direction
fronts
cloud cover
Answers
Which of the following states of matter has a definite volume
Answers
Answer:
Solid and Liquids
Explanation:
Solid has both definite shape and volume
It's stays on what is there natural appearance.. while
Liquid has definite volume but has indefinite shape
Answer:
\(\boxed {\boxed {\sf Solids \ and \ liquids}}\)
Explanation:
Let's review the 3 main states of matter:
Solid:
Particles vibrate, but are stationary. The solid doesn't change under normal conditions. Definite shape and volumeLiquid:
Particles flow and glide. The liquid fills the container. Indefinite shape, definite volumeGas:
Particles fly around rapidly. The gas fills it's container and is very compressible. Indefinite shape and volumeSo, we see that the 2 states of matter with definite volume are solids and liquids.
Which statement is true of the following reaction? upper h subscript 2 plus upper o subscript 2 right arrow upper 2 h superscript plus, plus upper o superscript 2 minus. it is balanced for oxidation state and for number of atoms. it is not balanced for oxidation state or for number of atoms. it is not balanced for oxidation state but is balanced for number of atoms. it is balanced for oxidation state but is not balanced for number of atoms.
Answers
Answer:
B) It is not balanced for oxidation state or for number of atoms
Explanation:
I got this question correct on my Edge quiz, so I know that this is the right answer.
The reactant side has 2 oxygen atoms, while the product side only has 1. This means the mass isn't balenced. In addition, the oxidation (charge) on the reactant side is 0, while it's -2 on the product side. This means the oxidation nor mass is balenced.
Hope that helps you!
Answer:
b
Explanation:
When a strip of zinc metal is added to a test tube of hydrochloric acid, the liquid forms bubbles, and the test tube feels hot. The bubbles are a result of the formation of hydrogen gas. What does the hot test tube indicate?
Answers
Answer:
Exothermic Reaction
Explanation:
The test tube feels hot as a result of an increase in temperature of the surroundings. This means that due to the reaction between zinc metal and hydrochloric acid, heat was released. The hot test tube indicates that this is an exothermic reaction.
Answer:
the reaction releases heat
Explanation:
Based on the standard free energies of formation, which of the following reactions represent a feasible way to synthesize the product?
A. N2(g)+2O2(g)→2NO2(g); ΔG ∘f=102.6 kJ/mol
B. 2Na(s)+O2(g) →Na2O2(s); ΔG∘f=-451.0 kJ/mol
C. 2C(s)+2H2(g) →C2H4(g); ΔG∘f=68.20 kJ/mol
D. Ca(s)+12O2(g) →CaO(s); ΔG∘f=-604.0 kJ/mol
Answers
Based on the standard free energies of formation, reactions B. and D. represent a feasible way to synthesize the product.
The feasible way to synthesize a product can be determined by examining the standard free energies of the formation of the reactants and products. A negative standard free energy of formation indicates that the compound is stable and feasible to form.
A. The standard free energy of formation of \(NO_2\) is positive (102.6 kJ/mol) , indicating that the reaction is not feasible.
B. The standard free energy of formation of \(Na_2O_2\) is negative(-451.0 kJ/mol), indicating that the reaction is feasible.
C. The standard free energy of formation of \(C_2H_4\) is positive( 68.20 kJ/mol), indicating that the reaction is not feasible.
D. The standard free energy of formation of CaO is negative(-604.0 kJ/mol), indicating that the reaction is feasible.
Therefore, the feasible reactions to synthesize the product are B and D.
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Why is the Sun's lifespan primarily based on its initial mass?
Answers
Answer:
Probably because there is more helium to burn. After billions of years there's only gonna be helium so no more of that firey energy.
I think....
piece of platinum metal with a density of 24.9 g/cm3 has a volume of 7.85 cm3. what is its mass? round your answer to the nearest gram.
Answers
The mass of the platinum metal is approximately 195 grams.
The mass of the platinum metal can be calculated using the formula:
mass = density x volume
Substituting the given values, we get:
mass = 24.9 g/cm3 x 7.85 cm3
mass = 195.465 g
Rounding this answer to the nearest gram, we get:
mass ≈ 195 g
Therefore, the mass of the platinum metal is approximately 195 grams.
It's important to note that density is a physical property of matter that describes the relationship between the mass of an object and its volume. In this case, the density of platinum is quite high, which is why it's often used in applications that require a high degree of durability and resistance to wear and tear.
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1.2 mol Zn and 5.5 mol HCl react according
to the equation
Zn + 2HCl → ZnCl₂ + H₂.
If the limiting reactant is Zn, calculate the
amount of ZnCl₂ formed.
Answer in units of mol. Answer in units of
mol.
outs
porad
mol.
******
002 (part 2 of 2) 10.0 points
Calculate the amount of H2₂ formed.
Answer in units of mol.
Answers
If 1.2 mol Zn and 5.5 mol HCl combine, with Zn acting as the limiting reactant, 1.2 mol ZnCl2 and 1.2 mol H2 resulting from the reaction.
How do you determine a reaction's limiting rate?By dividing the volume of each solution by its molarity, you can get the number of moles of each reactant. By dividing the number of moles of each reactant by its stoichiometric coefficient in the balanced chemical equation, you may determine which reactant is the limiting one.
Reaction stoichiometry
The balanced reaction is:
Zn + 2 HCl → ZnCl₂ + H₂
Zn: 1 mole
HCl: 2 moles
ZnCl₂: 1 mole
H₂: 1 mole
moles of ZnCl₂= (1.2 moles of Zn× 1 mole of ZnCl₂)÷ 1 mole of Zn
moles of ZnCl₂= 1.2 moles
moles of H₂= (1.2 moles of Zn× 1 mole of H₂)÷ 1 mole of Zn
moles of H₂= 1.2 moles
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If this same quantity of energy were transferred to 2.5 kg of water at it's boiling point what fraction of the water would be vaporized
Answers
Answer:
Fraction of water that can be vaporized = 0.0961 or 9.61%
Note : The question is incomplete. The complete question is given below:
A serving of Cheez-Its releases 130 kcal (1 kcal = 4.18 kJ) when digested by your body.
If this same quantity of energy were transferred to 2.5 kg of water at its boiling point, what fraction of the water would be vaporized?
Explanation:
Energy released by a serving of Cheeze-Its = 130 kcal
Since 1 kcal = 4.18 kJ, 130 kcal = 130 * 4.18 kJ = 543.4 kJ
Heat of vaporization (evaporating or condensing) Hv, of water = 2260 J/g
From formula, quantity of heat, Q = mass * heat of vaporization
mass of water = 2.5 kg = 2500 g
Q = 2500 g * 2260 J/g
Q = 5650000 J = 5650 kJ
Therefore 2.5 kg of water requires 5650 kJ of heat for complete vaporization
Fraction of water that can be vaporized by 543.4 kJ energy = 543.4/5650
Fraction of water that can be vaporized = 0.0961 or 9.61%
one meter cubed of co2, initially at 150c and 50bar, is isothermally compressed in a frictionless piston/cylinder device to final pressure of 300 bar. Calculatei. The volume of the compressed gasii. The work done to compress the gasiii. the heat flow on compressor asuming carbon dioxidea. Is an ideal gas b. Obeys the principle of corresponding states of Sec. 6.6 c. Obeys the Peng-Robinson equation of state
Answers
The volume and work done for the isothermal compression of \(CO_2\) from 50 bar to 300 bar, assuming that it is an ideal gas. The heat flow on the compressor depends on the assumptions made about the behavior of \(CO_2\).
What is Work Done?
In physics, work is done when a force applied to an object moves it through a distance. Mathematically, work is defined as the product of force and displacement, where both force and displacement are vectors.
i. The volume of the compressed gas is approximately 0.273 \(m^{3}\).
ii. The work done to compress the gas is approximately 19,506 J.
iii. The heat flow on the compressor depends on the assumptions made about the behavior of \(CO_2\).
Finally, if we assume that \(CO_2\) obeys the Peng-Robinson equation of state, then we need to use the appropriate equation to calculate the compressibility factor and the heat flow.
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