state two advantages of parallel over series connection in table form?
Answers
Advantages of parallel combination over series combination are:
1) In parallel combination each appliance gets the full voltage.
2) If one appliance is switched on/of others are not affected.
3) The parallel circuit divide the current through the appliances. Each appliance gets proper current depending on its resistance.
4) In a parallel combination it is very easy to connect or disconnect a new appliance without affecting the working of other appliances.
choose what you like!
Note that there are also some disadvantages to using parallel connections over series connections, such as increased complexity in wiring and the need for additional safety measures when working with high voltage circuits. The choice between series and parallel connections depends on the specific requirements of the circuit and the devices being used.
Related Questions
2 moles of NO, was placed in an empty I dm' bottle and allowed to reach equilibrium according to the equation:
At equilibrium, 1.2 moles of N,O, dissociated. Calculate the value of the equilibrium constant for the reaction at that
temperature.
Answers
2NO(g) ⇌ N2(g) + O2(g)
According to the problem statement, 2 moles of NO were placed in a 1 dm^3 bottle and allowed to reach equilibrium, and at equilibrium, 1.2 moles of NO had dissociated. This means that the initial concentration of NO was:
[NO]initial = 2 mol / 1 dm^3 = 2 M
And the concentration of NO at equilibrium is:
[NO]equilibrium = (2 - 1.2) mol / 1 dm^3 = 0.8 M
Since the stoichiometry of the balanced equation is 2:1:1 for NO, N2, and O2, respectively, the equilibrium concentrations of N2 and O2 will also be 0.6 M.
The equilibrium constant (Kc) can be calculated using the equilibrium concentrations of the reactants and products, raised to the power of their stoichiometric coefficients. Therefore:
Kc = ([N2][O2]) / ([NO]^2)
Substituting the equilibrium concentrations into the equation, we get:
Kc = (0.6 M x 0.6 M) / (0.8 M x 0.8 M)
Kc = 0.5625
Therefore, the value of the equilibrium constant for the reaction at that temperature is 0.5625. Note that the units of Kc depend on the stoichiometry of the balanced equation. Since the stoichiometric coefficients are all 1, the units of Kc in this case are M^-1
I need help asap!!!!!
Answers
A balanced equation obeys the law of conservation of mass which states that the number of reactants and products on both sides of the equation should be always equal.
What is a balanced equation?An equation in which the number of atoms of each element in the chemical reaction and the total charge are found to be the same for both the reactants and products. The mass of the reactants is equal to the mass of products.
The following steps are used to balance the given equation.
At first count all the number of atoms of each element on either side of the reaction.The number of 'Mg' atoms are equal on both sides. In order to balance 'NO₃' molecules multiply HNO₃ by 2.To balance the number of 'Cl' atoms, multiply 'HCl' with 2.The number of 'O' atoms on both sides are equal. i.e., 6.There are 2 'H' atoms on both side of the equation.Thus the balanced equation obtained is:
Mg (NO₃)₂ + 2HCl → 2HNO₃ + MgCl₂
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suppose that a radioactive isotope starts off with a certain amount of the radioactive element, which then decays. after 45 hours, the material has decayed to half of its original amount. how many hours would you have to wait for the isotope to decay from 100% to 12.5% of its original amount of the isotope?
Answers
After 135 hours the concentration of the isotope will decay to 12.5% of the initial concentration of the sample.
So, it is given that the half life of the sample which is radioactive is 45 ours.
It means, the concentration of the sample becomes half in every 45 hours.
So, let us say that the initial concentration of the sample is A.
So, after 45 hours the concentration will become A/2 which is 50% of A.
Now, the If initial concentration is taken as A/2 then after 45 more hours the concentration will be A/4 which is 25% of A.
Now, if the concentration is taken to be A/4, then again after 45 hours, the concentration will become A/8 which is 12.5% of A.
SO, it took (45 + 45 + 45) Hours.
It took 135 hours for concentration to decay to 12.5%.
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The maximum theoretical suction life of a centrifugal pump at sea level is approximately?
a) 15 feet
b) 20 feet
c) 34 feet
d) 40 feet
Answers
The maximum theoretical suction life of a centrifugal pump at sea level is approximately a) 15 feet
What is the hypothetical pump's suction lift at mean sea level?
The maximum height that any centrifugal pump may theoretically raise water is 10.33 metres above sea level. Suction lift is the vertical distance on the suction side of the pump between the pump impeller and the liquid surface if the liquid is below the pump datum.
The hoover is created by the ground-level pump, which can theoretically raise a maximum of roughly 30 feet (34 feet if a flawless hoover could be created).
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I NEED HELP PLEASE, THANKS!
Electrochemistry is important in many aspects of daily life.
i. Define voltaic cell.
ii. Fill in the blanks for the drawing of a voltaic cell that’s made with copper/copper (II) nitrate (E° = 0.34 V) and zinc/zinc (II) nitrate (E° = –0.76 V). Briefly explain the role of the salt bridge.
iii. Using the equation E°cell = E°cathode – E°anode, calculate the overall cell potential for the cell.
iiii.
a. _____________
b. _____________
c. _____________
d. _____________
e. _____________
f. _____________
g. _____________
h. _____________
Answers
Answer:
Here's what I get
Explanation:
(i) Voltaic cell
A voltaic cell is a device that uses a chemical reaction to produce electrical energy.
(ii) Overall Cell Potential
The standard reduction potentials for the half-reactions are
ℰ°/V
Cu²⁺ + 2e⁻ ⇌ Cu 0.34
Zn²⁺ + 2e⁻ ⇌ Zn -0.76
The half-reaction with the more positive potential is the reduction half-reaction. It is the reaction that occurs at the cathode.
The half-reaction with the more negative potential is the oxidation half-reaction. It is the reaction that occurs at the anode.
We reverse that half-reaction and subtract the voltages to get the cell reaction.
ℰ°/V
Cathode: Cu²⁺ + 2e⁻ ⇌ Cu 0.34
Anode: Zn ⇌ Zn²⁺ + 2e⁻ -0.76
Cell: Zn + Cu²⁺ ⇌ Zn²⁺ + Cu 1.10
\(\mathcal{E}_{\text{cell}}^{\circ} = \mathcal{E}_{\text{cat}}^{\circ} - \mathcal{E}_{\text{an}}^{\circ} = \text{0.34 V} - \text{(-0.76 V)} = \text{0.34 V} + \text{0.76 V} = \textbf{1.10 V}\)
(iii) Diagram
The specific labels will depend on your textbook.
They are often as follows.
a. Electron flow
b. Voltmeter or lightbulb
c. Electron flow
d. Cathode or Cu
e. Cu²⁺(aq) and NO₃⁻(aq)
f. Salt bridge
g. Zn²⁺(aq) and NO₃⁻(aq)
h. Anode or Zn
The salt bridge enables ions to flow in the internal circuit and to maintain electrical neutrality in the two compartments.
It often consists of a saturated solution of KCl.
As Zn²⁺ ions form in the anode compartment, Cl⁻ ions move in to provide partners for them.
As Cu²⁺ ions are removed from the cathode compartment, K⁺ ions move in to replace them.
Answer:a. Electron flow
b. Voltmeter or lightbulb
c. Electron flow
d. Cathode or Cu
e. Cu²⁺(aq) and NO₃⁻(aq)
f. Salt bridge
g. Zn²⁺(aq) and NO₃⁻(aq)
h. Anode or Zn
Explanation:
please hep!! water has a density of 1.0 g/mL. a plastic cup floats when it is placed into a container of water. what can you conclude about the density of the plastic cup? (look at the picture)
Answers
Water has a density of 1.0 g/mL. A plastic cup floats when it is placed into a container of water as it is less denser than water.
Density is a key notion in physics and material science that quantifies how tightly packed a substance's particles or molecules are within a certain volume. It is a measure of the mass contained in a certain amount of space that gives useful information about the properties of various materials.
It is vital to highlight that density is a material attribute that remains constant regardless of sample size. A little piece of iron, for example, has the same density as a huge iron block, despite the larger block having more mass.
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why do we need to rinse the mouth before collecting the saliva
Answers
Formula to find mass percent of an element
Answers
Answer:
Explanation:
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Featured snippet from the web
To find the mass percent composition of an element, divide the mass contribution of the element by the total molecular mass. This number must then be multiplied by 100% to be expressed as a percent.
Which particle is NOT made up of quarks?
A: a proton
B: a neutron
C: an electron
Answers
Answer: C: an electron
Explanation:
Answer:
C: electrons
Explanation:
5.00g of CaC12 in 95.0 g of water
Answers
Answer:
Explanation:
lo8
All of the following are qualitative tests that are often used to identify unknown ionic compounds except __________
Answers
All of the following are qualitative tests that are often used to identify unknown ionic compounds except titration.
Qualitative tests are conducted to determine the presence or absence of certain ions or compounds in a sample based on their characteristic reactions. Common qualitative tests include flame tests, precipitation reactions, color changes, and gas evolution tests.
Titration, on the other hand, is a quantitative technique used to determine the concentration of a specific substance in a solution by reacting it with a standardized solution of another substance. It is not typically used as a qualitative test for identifying unknown ionic compounds.
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A student is making a solution of NaCl in water. If the student uses 7.76 grams of NaCl and enough water to make 5.13 liters of solution, what is the molarity of the student's salt solution?
Answers
M=moles/L solution
7.76 g. • 1 mol/58g = 0.134 mol NaCl
M= 0.134/5.13 = 0.000261 M
What is the value of Ksp for bismuth sulphide (Bi2S3) which has a solubility of 1.0×10 −15 mol/L at 25∘C ?
Answers
The value of the Ksp for the bismuth sulphide (Bi₂S₃) and which has the solubility of 1.0 × 10⁻¹⁵ mol/L at 25 °C is 1.1 × 10⁷³.
The chemical equation is :
Bi₂S₃ ⇄ 2Bi³⁺ + 3S²⁻
The expression for the ksp is as follows :
ksp = [Bi³⁺]² [S²⁻]³
The solubility = 1.0 × 10⁻¹⁵ mol/L
[Bi³⁺] = 2 ( 1.0 × 10⁻¹⁵ ) = 2 × 10⁻¹⁵
[S²⁻] = 3 ( 1.0 × 10⁻¹⁵ ) = 3 × 10⁻¹⁵
ksp = (2 × 10⁻¹⁵ )² ( 3 × 10⁻¹⁵ )³
ksp = 1.1 × 10⁷³
Thus, the ksp for the Bi₂S₃ is 1.1 × 10⁷³.
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Q3 - Complete the word equation *
1 point
Bromine +
Chlorine
Bromide +
Potassium
Chloride
Bromine +
Potassium
Chloride
Hydrogen
bromide +
Potassium
Chloride
Chlorine +
Potassium
Bromide ->
Answers
Distinguish among solids, liquids, and gases on the basis of their shape, their volume, and how their particles are packed together.
Answers
explain how iodine can be obtained from iodine-sodium chloride mixture
Answers
When this vapour hits a cold surface, it undergoes deposition where it changes from a gas to a solid
Calculate the percent error if a thermometer reads 76.25 °C, and a reference thermometer reads 74.96 °C. b. The heat of neutralization in an experiment was determined to be -58.7 kJ/mol. The literature value for this heat of neutralization is –56.2 kJ/mol. Calculate the percent error.
Answers
The percent error for the thermometer reading is approximately 1.72%. For the heat of neutralization, the percent error is approximately 4.46%.
The percent error is calculated using the formula:
\(\[\text{{Percent Error}} = \left|\frac{{\text{{Experimental Value}} - \text{{Accepted Value}}}}{{\text{{Accepted Value}}}}\right| \times 100\%\]\)
For the thermometer reading, the experimental value is 76.25 °C and the accepted value is 74.96 °C. Plugging these values into the formula, we get:
\(\[\text{{Percent Error}} = \left|\frac{{76.25 - 74.96}}{{74.96}}\right| \times 100\% \approx 1.72\%\]\)
For the heat of neutralization, the experimental value is -58.7 kJ/mol and the accepted value is -56.2 kJ/mol. Plugging these values into the formula, we get:
\(\[\text{{Percent Error}} = \left|\frac{{-58.7 - (-56.2)}}{{-56.2}}\right| \times 100\% \approx 4.46\%\]\)
The percent error provides a measure of the deviation between the experimental and accepted values, expressed as a percentage. In both cases, a positive percent error indicates that the experimental value is higher than the accepted value, while a negative percent error indicates that the experimental value is lower. The percent error allows for comparison and evaluation of the accuracy of measurements or experimental results.
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0.3747x + 11.598 pls help meeeeeeeeeeeeeeeeeeeeeeeeeeee
Answers
Answer:
that isn't a full equation but I will assume this is = to 0
that makes x 30.95
Explanation:
The smallest particle of an element that retains the properties of that element is a(n) ____. a. atom c. proton b. electron d. neutron
Answers
Answer: proton
Explanation:
They are what give an atom it’s identity
Beryllium can be extracted from beryllium chloride. Beryllium chloride is heated with potassium to produce beryllium and potassium chloride. Complete the equation for the reaction
Answers
The complete chemical equation of the chemical reaction in which Beryllium chloride is heated with potassium to produce beryllium and potassium chloride is as follows:
BeCl₂ + 2 K ---> Be + 2 KClWhat is a chemical equation?Chemical equations are symbols and chemical formulas that depict a chemical reaction symbolically.
Chemical equations use the symbols of the elements, ions, or compounds that are involved in the reaction to represent the reaction.
The given reaction describes how Beryllium can be extracted from beryllium chloride.
The chemical reaction is as follows: Beryllium chloride is heated with potassium to produce beryllium and potassium chloride.
The chemical equation of the reaction is as follows:
BeCl₂ + 2 K ---> Be + 2 KCl
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Which species will have the strongest mass shift on a magnetic susceptibility balance?.
Answers
O2 is the correct answer.
Explanation:
On a magnetic susceptibility balance, the O2 species will have the strongest mass shift since stronger paramagnetic species will have a larger mass shift.
The oxygen atoms in the O2 species are paramagnetic because unpaired electrons rotate in the same direction, increasing the magnetic field force. As a result, the oxygen atoms with two unpaired electrons will exhibit the largest mass shift on a magnetic susceptibility balance.
The magnitude of the mass shift is -O2, which increases with species paramagneticity. The mass shift increases with species paramagneticity. Therefore, on a magnetic susceptibility balance, oxygen will have the highest mass shift since it has two unpaired electrons in the molecular orbital diagram.
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Two liquids A & B are miscible with each other at room temperature. Which separation technique will you apply to separate the mixture of A & B if the difference in their boiling points is 27-degree celsius
Answers
Fractional distillation
give latin name of silver
Answers
The Latin word for silver is argentum.
A car in a parking lot travels back and forth in a parking lane in an effort to find a good parking spot
Answers
It is to be noted that the Total Distance traveled is 130 meters while the total displacement is 40 meters to the right.
What is Displacement?A displacement is a vector in geometry and mechanics whose length is the smallest distance between the beginning and final positions of a moving point P.
Displacement = final position - beginning position = change in position is the formula.
The distance is determined by adding up all the ground that was covered. That is, add the distances from A to B, then from B to C to D, and then from D to E. This means one must add 40 m (A to B) and 45 m (B to C to D) and 45 m (D to E).
The displacement is determined by simply measuring from the starting position (A) to the final position (E). This is 40 m, directed to the right.
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Full Question:
A car in a parking lot travels back and forth in a parking lane in an effort to find a good parking spot. Given the images attached, find the Distance traveled and the Displacement.
ito ang kontinenteng nagtataglay ng pinakamaraming bansa sa lahat ng kontinente
Answers
Answer:
Africa
Explanation:
Ang Africa ay ang kontinente na mayroong pinakamataas na bilang ng mga bansa sa lahat ng mga kontinente.
Kasalukuyan, ang bilang ng mga bansa sa kontinente ay 54, ito ay 53 bago ang South Sudan ang pinakabagong sumali.
Ang bilang na ito ay pinaniniwalaang tataas sa mga darating na taon dahil sa kaguluhan ng iba't ibang mga segment sa ilang mga bansa para sa kalayaan
PLEASE HELP ! (PICTURE)❗️
Answers
Answer:
si
Explanation:
The different possible ways for arranging the particles of a system are called _____. The greater the number of these states, the _____ the entropy of the system
Answers
The different possible ways of arranging the particles of a system are called states. The greater the number of these states, the higher the entropy of the system.
By ascribing definite values to a satisfactory amount of variables, one can define the state of a system. In simple terms, it is the description of a system condition in terms of properties that are measurable or observable, for example, pressure, temperature, etc.
Entropy is a measure of the disorder or randomness in a system, and an increase in the number of states corresponds to an increase in entropy. The S.I. unit for entropy is joules per kelvin. Entropy is a measurable physical property. In a thermodynamic system, it is an extensive property.
Example: There is an increase in entropy when a block of ice melts.
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Pls help me I don’t know how to do this
Answers
Explanation:
We have a 63.9 g sample of calcium hydroxide. First we have to convert those grams into moles. To do that we have to use the molar mass of calcium hydroxide.
Calcium hydroxide = Ca(OH)₂
molar mass of Ca = 40.08 g/mol
molar mass of O = 16.00 g/mol
molar mass of H = 1.01 g/mol
molar mass of Ca(OH)₂ = 1 * 40.08 g/mol + 2 * 16.00 g/mol + 2 * 1.01 g/mol
molar mass of Ca(OH)₂ = 74.10 g/mol
mass of Ca(OH)₂ = 63.9 g
moles of Ca(OH)₂ = 63.9 g /(74.10 g/mol)
moles of Ca(OH)₂ = 0.862 moles
In 1 molecule of Ca we have 2 atoms of O. So in 1 mol of Ca(OH)₂ we will have 2 moles of O atoms.
1 mol of Ca(OH)₂ = 2 moles of O atoms
moles of O atoms = 0.862 moles of Ca(OH)₂ * 2 moles of O /1 mol of Ca(OH)₂
moles of O atoms = 1.724 moles
One mol is similar to a dozen. When we say that we need a dozen eggs we know that we need 12 eggs. If we want a mol of eggs, we want 6.022*10^23 eggs. So one mol of something is 6.022 * 10^23 of that.
1 mol of O atoms = 6.022 * 10^23 atoms
n° of O atoms = 1.724 moles * 6.022 * 10^23 atoms/1 mol
n° of O atoms = 1.04 * 10^24 atoms
Answer: In a 63.9 g sample of Ca(OH)₂ we have 1.04 *10^24 atoms of oxygen.
How does a balanced chemical equation demonstrate the Law of Conservation of Mass? (1 point)
O it shows that only physical changes follow the Law of Conservation of Mass
O it shows that no atoms have been gained or lost during the reaction
O it shows that the properties of the elements stay the same after the reaction
O it shows that all compounds remain bonded after the reaction
Answers
Explanation:
A balanced equation demonstrates the conservation of mass by having the same number of each type of atom on both sides of the arrow. enjoy
Answer:
It show that no atoms have been gained or lost during reaction
Explanation:
(science)
if you have visited a natural history museum, you have probably seen the dinosaur exhibits. of course, dinosaurs do not exist today. we know about them because of the discovery of what?
a. herds
b. fossils
c. stories
d. hatchlings
Answers
b. fossils we know about them because of the discovery .
What proof does science have that dinosaurs ever lived on Earth?The Earth was the home of the dinosaurs for at least 230 million years, according to a wealth of fossilized bones, teeth, trackways, and other physical evidence. But no dinosaur bones have been discovered in strata younger than 66 million years old, not even a single trace.
In June 2022, Dippy returned to the Natural History Museum as a component of a traveling exhibition. The replica will then be loaned to another institution for a period of three years. Applications for the future location were made available by the Museum in March 2022.
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