The work done for the system, given that the internal energy changes by -536 Joules, is 1227 joules
How do i determine the work done for the system?From the question given above, the following data were obtained:
Heat generated (q) = 691 JoulesChange in internal energy (ΔU) = -536 JoulesWork done (W) = ?The work done for the system can be obtained as illustrated below:
ΔU = q - w
Inputting the given parameters, we have:
-536 = 691 - w
Collect like terms
-536 - 691 = -w
-1227 = -w
Multiply through by -1
w = 1227 joules
Thus, we can conclude that the work done for the system is 1227 joules
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PLEASE HELP QUICKLY!!!
HI gas is removed from the system
at equilibrium below. How does the
system adjust to reestablish
equilibrium?
51.8 kJ + H₂(g) + 1₂(g) = 2HI(g)
A. The reaction shifts to the right (products) and the concentrations
of I, and H₂ decrease.
B. The reaction shifts to the left (reactants) and the concentrations
of H₂ and I increase.
C. The reaction shifts to the right (products) and the concentrations
of I, and H₂ increase.
D. The reaction shifts to the left (reactants) and the concentration of
HI increases.
Answer:
A. The reaction shifts to the right (products) and the concentrations of I and H₂ decrease.
Explanation:
If gas is removed from the system at equilibrium, the system will try to compensate for the loss by shifting the reaction in a direction that produces more gas molecules. This is known as Le Chatelier's principle, which states that a system at equilibrium will respond to a disturbance by shifting in a way that minimizes the effect of the disturbance.
In this case, since gas is being removed from the system, the reaction will shift to the side that produces more gas molecules. Looking at the balanced equation, we can see that 2HI(g) has a greater number of gas molecules compared to H₂(g) and I₂(g). Therefore, the system will shift to the right (products) to produce more HI(g) and reestablish equilibrium.
The data in the table below represents the pressure of the gas as the temperature changes. Plot a graph of this data, using the blank graph provided below. Draw a trend line and calculate its slope. How are the variables related? What will the pressure of the gas be at 0°C?
Answer: A
Explanation:
Calculate the wavelength of the line in the emission line spectrum of hydrogen caused by the transition of the electron from an orbital with =n8 to an orbital with =n1. Round your answer to 3 significant digits. in nm
Answer:
The wavelength of the emission line caused by the electron transition from n=8 to n=1 in hydrogen is 1320 nm, rounded to 3 significant figures.
Explanation:
Here are the steps to solve this problem:
1) We are given that the electron is transitioning from an orbital n=8 to n=1 in the emission spectrum of hydrogen.
2) According to the Rydberg formula for hydrogen, the wavelength of an emission line is given by:
λ = 1240/ (1/n^2_f - 1/n^2_i) nm
Where:
n_f is the final orbital (1 in this case)
n_i is the initial orbital (8 in this case)
3) Plugging in the values n_f = 1 and n_i = 8 into the Rydberg formula, we get:
λ = 1240/ (1/1^2 - 1/8^2)
= 1240/(1 - 0.0625)
= 1240/0.9375
= 1324 nm
4) Rounding this to 3 significant figures gives:
1320 nm
So the final answer is:
1320 nm
Heat capacity of liquid water 4.18J/(g•k) Energy transferred?
The energy required to heat 1.00 g of water from 26.5°C to 83.7°C is 230 J. The energy formula for heating is, Energy = mcΔT.
Energy = mass × specific heat capacity × temperature change
Substituting the given values into the equation, we have:
Energy = 1.00 g × 4.18 J/(g·°C) × (83.7°C - 26.5°C) = 230 J
Therefore, the energy required is 230 J.
In this case, we are given the mass of water as 1.00 g and the specific heat capacity of water as 4.18 J/(g·°C).
The temperature change is 83.7°C - 26.5°C. By substituting these values into the equation, we find that the energy required is 230 J. This means that to heat 1.00 g of water from 26.5°C to 83.7°C, 230 J of energy must be supplied. The specific heat capacity is the amount of energy which is needed to increase the temperature of 1g of a substance by 1°C and in this case, it is 4.18 J/(g·°C) for water.
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Complete question:
The specific heat capacity of liquid water is 4.18 J/(g.k). How would you calculate the quantity of energy required to heat 1.00 g of water from 26.5 C to 83.7 C?
if 500 mL of Ag+ solution contain 1.0 mols of Ag+, what is the molarity of the solution
If 500 mL of Ag+ solution contain 1.0 mols of Ag+, what is the molarity of the solution
To calculate the molarity of the solution, we need to use the formula
Molarity = moles of solute / volume of solution in liters
We are given that the volume of the solution is 500 mL, which is the same as 0.5 L. We are also given that the solution contains 1.0 mole of Ag+.
Substituting these values into the formula, we get:
Molarity = 1.0 mol / 0.5 L = 2.0 M
Therefore, the molarity of the solution is 2.0 M.
Using the molarity formula, where molarity is equal to number of moles divided by volume(in liters) of the mixture is 2 mol/L.
Here, it is given that 500 mL of the Ag+ solution contains 1.0 mole of Ag+. To find molarity, the volume must first be converted to liters.
Solution volume = 500 mL = 500/1000 = 0.5 L
The molarity (M) can then be calculated using the following formula:
Molarity (M) equals moles of solute divided by the volume of solution (in liters).
Molarity = 1.0 mol / 0.5 L = 2.0 mol/L
As a result, the Ag+ solution has a molarity of 2.0 mol/L.
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How do you balance
Ca(OH2) aq + H3PO4
In a neutralization equation?
Answer:
To balance this equation, we need two phosphate ions and three calcium ions. We end up with six water molecules to balance the equation: 2 H 3 PO 4 (aq) + 3 Ca (OH) 2 (aq) → 6 H 2 O (ℓ) + Ca 3 (PO 4) 2 (s) This chemical equation is now balanced.
Explanation:
if a given sample of metal has a mass of 2.68 g and a volume of 1.03 cm3, what is its density?
Answer: If a given sample of metal has a mass of 2.68 g and a volume of 1.03 cm³, the density of the metal will be 2.6019417476 g/cm³.
Explanation:
To find out the density of any object we must have known values of mass of the object and volume of the object.
Mass- Mass is the amount of matter present in any object or particle. The S.I. unit of mass is the kilogram.
Volume- Volume is defined as the amount of space occupied by an object or particle. The measuring unit of volume is cubic meter (m³)- for larger volumes and cubic centimeters (ccm³) and cubic millimeters (cmm³) for smaller volumes.
Density- Density is the measurement that compares the mass of an object with its volume. The S.I. unit of density is kilogram per cubic meter (kg /m³) and the C.G.S unit is gram per cubic centimeter ( g/ ccm³). Density is denoted by rho (ρ).
The density of an object can be calculated by the following formula:
Density (ρ) = mass (m)/ volume (v)
In the given question, the mass of the object is 2.68 g. i.e. m = 2.68 g and the volume of the given sample is 1.03 cm³ i.e. v = 1.03 cm³.
Hence, by using the above formula and putting the values of mass and volume, we can calculate the density of the sample as below-
Density = mass (m)/ volume (v)
= 2.68 / 1.03
= 2.6019417476 g/cm³
Therefore, for the given sample of metal that has a mass of 2.68 g and volume of 1.03 cm³ will have a density of 2.6019417476 g/cm³.
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calculate the volume of hydrogen in the reaction of 73 grams of zinc and 73 grams of hydrochloric acid (under normal conditions) please help
The volume of hydrogen gas produced in the reaction of 73 grams of zinc and 73 grams of hydrochloric acid (under normal conditions) is approximately 22.4 liters.
To calculate the volume of hydrogen gas produced in the reaction of zinc and hydrochloric acid, we need to use the principles of stoichiometry and the ideal gas law.
First, let's write the balanced chemical equation for the reaction between zinc (Zn) and hydrochloric acid (HCl):
Zn + 2HCl →[tex]ZnCl_2[/tex]+ H2
From the equation, we can see that one mole of zinc reacts with two moles of hydrochloric acid to produce one mole of hydrogen gas. To determine the number of moles of zinc and hydrochloric acid, we need to convert the given masses into moles.
The molar mass of zinc (Zn) is approximately 65.38 g/mol, so 73 grams of zinc is equal to:
73 g Zn * (1 mol Zn / 65.38 g Zn) ≈ 1.116 mol Zn
Similarly, the molar mass of hydrochloric acid (HCl) is approximately 36.46 g/mol, so 73 grams of HCl is equal to:
73 g HCl * (1 mol HCl / 36.46 g HCl) ≈ 2.002 mol HCl
According to the balanced equation, the reaction produces one mole of hydrogen gas for every two moles of hydrochloric acid. Therefore, since we have 2.002 moles of HCl, we expect to produce half that amount, or approximately 1.001 moles of hydrogen gas.
To calculate the volume of hydrogen gas, we can use the ideal gas law, which states:
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. In this case, we assume the reaction is conducted under normal conditions, which means a pressure of 1 atmosphere and a temperature of 273.15 Kelvin.
Rearranging the equation to solve for V, we have:
V = nRT / P
Substituting the values, we get:
V = (1.001 mol) * (0.0821 L·atm/(mol·K)) * (273.15 K) / (1 atm) ≈ 22.4 L
Therefore, the volume of hydrogen gas produced in the reaction is approximately 22.4 liters.
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Please help!
- Which of the following compound is insoluble in water?
A. BaS
B. Hg2Cl2
C. MgSO4
D. (NH4)2CO3
E. All of these compounds are soluble in water.
thank you :)
Stephan’s mother cuts a twig from a rose bush and plants it in the soil. After a few days, Stephan observes a new plant growing. Which characteristic does the growth of the new plant depict?
The growth of the new plant depicts the asexual reproduction characteristic. The characteristic that describes the growth of the new plant in Stephan's mother cutting a twig from a rose bush and planting it in the soil is asexual reproduction.
Asexual reproduction is the mode of reproduction by which organisms generate offspring that are identical to the parent's without the fusion of gametes. Asexual reproduction is a type of reproduction in which the offspring is produced from a single parent.
The offspring created are clones of the parent plant, meaning they are identical to the parent.The new plant in Stephan’s mother cutting a twig from a rose bush and planting it in the soil depicts the process of asexual reproduction, which is the ability of a plant to reproduce without seeds. In asexual reproduction, plants can reproduce vegetatively by cloning themselves using their roots, bulbs, or stems.
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The equilibrium constant for the reaction below is 2.5 x 10³ at a certain temperature.
2SO₂(g) + O₂(g)2SO3(g)
If at equilibrium, [SO₂] = 0.0651 M and [0₂] = 0.114 M, what is [SO3]? Round your answer to 2 significant figures.
Using the equilibrium constant expression and given concentrations of SO₂ and O₂, the approximate concentration of SO₃ at equilibrium is 0.436 M, rounded to 2 significant figures.
The equilibrium constant expression for the given reaction is:
Kc = [SO₃]² / ([SO₂]² * [O₂])
Given that the equilibrium constant (Kc) is 2.5 x 10³, [SO₂] = 0.0651 M, and [O₂] = 0.114 M, we can substitute these values into the equilibrium constant expression:
2.5 x 10³ = [SO₃]² / (0.0651² * 0.114)
To solve for [SO₃], we can rearrange the equation:
[SO₃]² = (2.5 x 10³) * (0.0651² * 0.114)
[SO₃]² = 0.1902643
Taking the square root of both sides:
[SO₃] = √(0.1902643)
[SO₃] ≈ 0.436 M
Therefore, at equilibrium, the concentration of SO₃ is approximately 0.436 M, rounded to 2 significant figures.
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a speaker wire is sold for 27 cent per foot what the correct conversation factor for this relationship
Correct conversion factor for the relationship is 1 foot = $0.27. This means that for every 1 foot of speaker wire, the cost is $0.27.
Understanding Conversion FactorThe conversion factor expresses the relationship between the units of measurement (foot and dollar) and their respective quantities (1 foot and $0.27).
Conversion factors are derived from equivalences or conversion rates between units. They are typically expressed as a fraction or ratio, where the numerator and denominator have different units but represent the same quantity.
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