F2 Of The Compounds Below Would Contain Polar Covalent Bonds.
How can you determine whether a bond is polar covalent?Although there are no strict guidelines, the general rule is that a bond is deemed nonpolar if the difference in electronegativities is less than or equal to 0.4; if the difference is larger than 0.4, the bond is termed polar.
Is there polar covalent bonding in f2?A fluorine molecule with two atoms is this. One covalent link exists because two fluorine atoms share the same valence electron pair. Due to the fact that the atoms are from the same element, the connection is nonpolar.
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When a solution of sodium hydroxide is mixed with iron (II) chloride, a green precipitate is formed. What is the balanced equation for that reaction?
The balanced chemical equation for the reaction is:
2NaOH(aq) + FeCl₂(aq) --> 2NaCl(aq) + Fe(OH)₂(s)
What is a chemical equation?Chemical equations are representations of chemical reactions using symbols and formula of the reactants and products.
The reactants are located on the left side while the products are located on the right side.
Reactants —> Products
The balancing of chemical equations follows the law of conservation of matter which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another.
How to write the balanced equationSodium hydroxide => NaOH
Iron (II) chloride => FeCl₂
2NaOH(aq) + FeCl₂(aq) --> 2NaCl(aq) + Fe(OH)₂(s)
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The diagram shows the setup of an experiment. A few observations of the experiment are listed in table below the diagram.
Experimental Observations
Description
1. Color of solution turned blue
2. Shiny hair like crystals deposited on the copper strip
Which of the following is the correct explanation for one of the given observations?
Observation 1 is a result of silver ions moving into the solution.
Observation 2 is a result of nitrate ions moving into the solution.
Observation 1 is a result of silver ions changing their oxidation state.
Observation 2 is a result of silver ions changing their oxidation state.
The proper explanations to the observation are;
Observation 1 is a result of silver ions changing their oxidation state.Observation 2 is a result of silver ions changing their oxidation state.What is a redox reaction?A redox reaction is one in which a specie is oxidized while the other specie is reduced. In the first observation, the color of the solution turned blue and in the second observation, shiny hair like crystals deposited on the copper strip.
Hence;
Observation 1 is a result of silver ions changing their oxidation state.Observation 2 is a result of silver ions changing their oxidation state.Learn more about redox reaction:https://brainly.com/question/13293425
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S + 6 HNO3 --> H₂SO4 + 6 NO₂ + 2 H₂O In the above equation how many moles of H₂SO4 can be made when 7 moles of HNO3 are consumed?
Answer:
1.17 moles H₂SO₄
Explanation:
To find the moles H₂SO₄, you need to multiply the given value by the mole-to-mole ratio. This ratio is made up of the coefficients of the relevant molecules from the balanced chemical equation. It is important to arrange the ratio in a way that allows for the cancellation of units.
S + 6 HNO₃ ------> 1 H₂SO₄ + 6 NO₂ + 2 H₂O
^ ^
7 moles HNO₃ 1 mole H₂SO₄
----------------------- x ------------------------ = 1.17 moles H₂SO₄
6 moles HNO₃
Decide whether each pair of elements in the table below will form an ionic compound. If they will, write the empirical formula of the compound formed in the
space provided.
element #1 element #2
sulfur
magnesium
sulfur
cesium
cesium
fluorine
magnesium
strontium
Forms ionic
compound?
yes
yes
yes
O yes
no
no
no
no
empirical formula of
ionic compound
0
0
0
0
Do
5
Answer:
1.) Yes, Cs₂S
2.) Yes, MgF₂
3.) Yes, MgS
4.) No
Explanation:
Nonmetals are located on the right side of the periodic table in the p-block. It is safe to assume that all the other elements are metals.
Ionic bonds form between a metal and nonmetal. When determining the empirical formula, the cation (the element losing electrons) is written before the anion (the element gaining electrons). The charges can be balanced by modifying the quantity of element.
1.) Cs₂S
-----> Cesium = metal and Sulfur = nonmetal
-----> Cesium = Cs⁺
-----> Sulfur = S²⁻
2.) MgF₂
-----> Magnesium = metal and Fluorine = nonmetal
-----> Magnesium = Mg²⁺
-----> Fluorine = F⁻
3.) MgS
-----> Magnesium = metal and Sulfur = nonmetal
-----> Magnesium = Mg²⁺
-----> Sulfur = S²⁻
4.) Both cesium and strontium are metals
In the following reaction, what element is losing mass?
Mg(s) + CuSO4(aq) -> MgSO4(aq) + Cu(s)
A. Mg
B. Cu
C.O
D. S
The element which is losing mass from the above reaction is Cu
Mg(s) + CuSO4(aq) -> MgSO4(aq) + Cu(s)
What is a compound?A compound simply refers to a chemical compound which contains two contains two or more elements which are chemically combined together.
So therefore, the element which is losing mass from the above reaction is Cu
Mg(s) + CuSO4(aq) -> MgSO4(aq) + Cu(s)
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Read the following sentence starters and descriptions. Identify each as: Claim, Evidence, or Reasoning
Reasoning includes one or more scientific principles in this context.
What is Reasoning?
This involves the thought about something in a sensible and logical manner due to one or more scientific principles being applied.
It is very important to the claim and evidence as it helps ascertain their validity in science.
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If you react 9.10g of vinyl chloride with 7.80g of oxygen, what is the theoretical yield of carbon dioxide
The theoretical yield of the CO2 produced is 4.22 g.
What is the theoretical yield of carbon dioxide?The balanced reaction equation is;
2C2H3Cl + 5O2 ------>2CO2 + 2H2O + 2HCl
Number of moles of vinyl chloride = 9.10g /62 g/mol = 0.15 moles
Number of moles of oxygen = 7.80g/32 g/mol = 0.24 moles
Now;
2 moles of C2H3Cl reacts with 5 moles of oxygen
0.15 moles of C2H3Cl reacts with 0.15 moles * 5 moles / 2 moles
= 0.375 moles
Hence oxygen is the limiting reactant;
5 moles of oxygen produces 2 moles of CO2
0.24 moles of oxygen produces 0.24 moles * 2 moles /5 moles
= 0.096 moles
Mass of CO2 produced = 0.096 moles * 44 g/mol
= 4.22 g
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What volume would 20.0 moles of sulfur
dioxide occupy at 75.3 °C with a pressure of
3.50 atm? Answer is in L
Answer:
163 L
Explanation:
To find the volume, you need to use the Ideal Gas Law. The equation looks like this:
PV = nRT
In this equation,
-----> P = pressure (atm)
-----> V = volume (L)
-----> n = moles
-----> R = constant (0.0821 L*atm/mol*K)
-----> T = temperature (K)
Before you can plug the given values into the equation, you first need to convert Celsius to Kelvin.
P = 3.50 atm R = 0.0821 L*atm/mol*K
V = ? L T = 75.3 °C + 273.15 = 348.45 K
n = 20.0 moles
PV = nRT
(3.50 atm)V = (20.0 moles)(0.0821 L*atm/mol*K)(348.45 K)
(3.50 atm)V = 572.1549
V = 163 L
What is the theoretical yield of bromobenzene in this reaction when 24.8 g of benzene reacts with 52.3 g of bromine?
Answer:
49.8 g C₆H₅Br
Explanation:
The theoretical yield is the maximum calculated amount of product that can be made from a reaction. To find the theoretical yield, you need to (1) determine the chemical reaction which is taking place, then (2) calculate the molar masses of the relevant reactants and product, then (3) convert grams of each reactant to grams of bromobenzene (using molar masses and mole-to-mole ratio from reaction coefficients), and then (4) determine the limiting reagent and the theoretical yield.
(Step 1)
Bromine = Br₂
Benzene = C₆H₆
Bromobenzene = C₆H₅Br
The balanced equation:
Br₂ + 2 C₆H₆ ----> 2 C₆H₅Br + H₂
(Step 2)
Molar Mass (Br₂): 2(79.904 g/mol)
Molar Mass (Br₂): 159.808 g/mol
Molar Mass (C₆H₆): 6(12.011 g/mol) + 6(1.008 g/mol)
Molar Mass (C₆H₆): 78.114 g/mol
Molar Mass (C₆H₅Br): 6(12.011 g/mol) + 5(1.008 g/mol) + 79.904 g/mol
Molar Mass (C₆H₅Br): 157.01 g/mol
(Step 3)
52.3 g Br₂ 1 mole 2 moles C₆H₅Br 157.01 g
----------------- x ------------------ x ------------------------- x --------------- =
159.808 g 1 mole Br₂ 1 mole
= 103 g C₆H₅Br
24.8 g C₆H₆ 1 mole 2 moles C₆H₅Br 157.01 g
------------------- x --------------- x -------------------------- x --------------- =
78.114 g 2 moles C₆H₆ 1 mole
= 49.8 g C₆H₅Br
(Step 4)
Because C₆H₆ produces a smaller amount of product than Br₂, it must be the limiting reagent. This means that it will run out before all of the Br₂ is used up. Therefore, the actual theoretical yield of C₆H₅Br is 49.8 grams.
How do you separate Sand Potassium Nitrate and Champhor
How many moles of chlorine gas at 120. °C
and 33.3 atm would occupy a vessel of 11.5
L?
Answer:
11.9 moles Cl₂
Explanation:
To find the number of moles, you need to use the Ideal Gas Law. The equation looks like this:
PV = nRT
In this equation,
-----> P = pressure (atm)
-----> V = volume (L)
-----> n = moles
-----> R = constant (0.0821 L*atm/mol*K)
-----> T = temperature (K)
Before you can plug the given values into the equation, you first need to convert Celsius to Kelvin.
P = 33.3 atm R = 0.0821 L*atm/mol*K
V = 11.5 L T = 120. °C + 273.15 = 393.15 K
n = ? moles
PV = nRT
(33.3 atm)(11.5 L) = n(0.0821 L*atm/mol*K)(393.15 K)
382.95 = n(0.0821 L*atm/mol*K)(393.15 K)
382.95 = (32.2776)n
11.9 = n
Question 8
If I have an unknown quantity of gas at a pressure of 3.85 atm, a volume of 32.4 liters, and a temperature of
80.4°C, how many moles of gas do I have?
Answer:
4.30 moles
Explanation:
You need to use the Ideal Gas Law. The equation looks like this:
PV = nRT
In this equation,
-----> P = pressure (atm)
-----> V = volume (L)
-----> n = moles
-----> R = Ideal Gas Constant (0.08206 atm*L/mol*K)
-----> T = temperature (K)
Before you can plug the given values into the equation and simplify to find "n", you need to convert Celsius to Kelvin. The final answer should have 3 sig figs to match the sig figs of the given values.
P = 3.85 atm R = 0.08206 atm*L/mol*K
V = 32.4 L T = 80.4 °C + 273.15 = 353.55 K
n = ? moles
PV = nRT
(3.85 atm)(32.4 L) = n(0.08206 atm*L/mol*K)(353.55 K)
124.74 = n(29.012313)
4.30 = n
State which substance is undergoing oxidation and which substance is undergoing reduction in the following reaction:
N2 (g) + 3 H2 (g) ---> 2 NH3 (g)
Answer:
H₂(g) = oxidized
N₂(g) = reduced
Explanation:
Oxidized substances lose electrons and increase in oxidation number. Reduced substances gain electrons and decrease in oxidation number.
Lone elements always have an oxidation number of 0. So, N₂(g) and H₂(g) have oxidation numbers of 0.
Within compounds, hydrogen generally always have an oxidation of +1. Therefore, the hydrogen in NH₃(g) has an oxidation number of +1. In order to make the overall compound neutral, the nitrogen in NH₃(g) must have an oxidation number of -3 (to balance the +3 from the 3 hydrogens).
Since H₂(s) is losing electrons (goes from 0 to +1), it is being oxidized. Since N₂(g) is gaining electrons (goes from 0 to -3), it is being reduced.
I need help with homework
The equation that conforms with the particle model is 4C + 6O2 ----> 4CO2 + 2O2.
What is a chemical reaction?The term chemical reaction has to do with the combination of substances to give products. We know that reactants and products must follow the law of conservation of mass.
Hence, the equation that conforms with the particle model is 4C + 6O2 ----> 4CO2 + 2O2.
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How many atoms are in 1.50 g of Al?
(A) 0.0556
(B) 18.0
(C) 3.35 x 10^22
(D) 2.44 x 10^25
How is the kinetic energy of the particles of a substance affected during a phase change?
O Kinetic energy increases during exothermic changes and decreases during endothermic changes.
O Kinetic energy decreases during exothermic changes and increases during endothermic changes.
O Kinetic energy does not change, but the potential energy does.
O Kinetic energy changes in the opposite way that the potential energy changes.
Answer:
O Kinetic energy does not change, but the potential energy does
Which is the number of moles of carbon dioxide produced from the complete combustion of 4.3 moles of ethanol?
The number of moles of carbon dioxide produced will be 8.6 moles.
Stoichiometri mole ratiosFirst, let's look at the balanced equation of the reaction. The complete combustion of ethanol gives carbon dioxide and water as follows:
[tex]C_2H_5OH + 3O_2 --- > 2CO_2 + 3H_2O[/tex]
We can see from the equation that the burning of 1 mole of ethanol produces 2 moles of carbon dioxide. In other words, the mole ratio is 1:2.
Thus, with 4.3 moles of ethanol, the amount, in moles, of carbon dioxide that will be produced will be:
4.3 x 2 = 8.6 moles
In other words, 8.6 moles of carbon dioxide will be produced from the complete combustion of 4.3 moles of ethanol.
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Select all the correct answers.
A worker is holding a filled gas cylinder still. Which two sentences are true about the energy of the filled gas cylinder?
A man in a blue dress holding a red color cylinder
It has no energy because it’s being held still.
It has gravitational potential energy because of its height.
Its atoms and molecules have thermal energy.
It has motion energy because it will fall if let go.
Its kinetic energy is being converted to potential energy.
Reset Next
The true statements are:
It has gravitational potential energy because of its height.Its atoms and molecules have thermal energy.What is energy?Energy is the ability to do work.
Energy can exist in many form, two of which are kinetic and potential energy.
The worker is holding a filled gas cylinder still gives the gas potential energy by lifting it above the ground.
The molecules of the gas also has kinetic energy by virtue of their constant random motion resulting in thermal energy.
In conclusion, the energy of the filled gas is both potential and kinetic.
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How is the rate of a reflection affected when the temperature increases
The rate of a reflection decreases when the temperature increases
This goes to say that the rate of reflection will go down more whenever there is an increase in temperature
What is reflection?Reflection can simply be defined as the the throwing back by a body of light without absorbing it.
reflection of
In conclusion, the rate of a reflection decreases when the temperature increases
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A[?] is a heterogeneous mixture which settles on standing and its components can be separated by filtration. colloid suspension
I think it should be suspension.
Analyze the following reaction and the given scenarios to discuss the relationship between volume and reaction rate. Determine which reaction will happen at a faster rate and explain why.
NH3(g) + 2O2(g) → HNO3(l) + H2O(l)
The first reaction is started in a gas chamber with a volume of 10 L. The second reaction is started in a gas chamber with a volume of 5 L.
The second reaction with the volume of 5L will occur faster as compared to the first reaction of volume 10L.
Volume is inversely proportional to the rate of reaction.
As volume increases rate of reaction decreases and as volume decreases rate of reaction increases.
Let's consider a reaction A → B.
r is rate of reaction and K is rate constant, A is the concentration of reaction.
r = k(A)
r is directly proportional to the A.
But the concentration of A is in Moles/liters (i.e. moles per unit volume)
r is inversely proportional to the volume of vessel or chamber.
Hence as volume increases rate of reaction decreases.
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Balance the following reactions
a) Ca (s) + H₂O (1)→ Ca(OH)2 (aq) + H₂ (g)
b) Al2O3 (s) + C(s) + Cl₂ (g) → AICI3 (s) + CO (g)
c) FeCl3 (aq) + H₂S (g) → Fe2S3 (s) + HCI (aq)
d) CaCO3 (s) + HCI (aq) → Ca Cl₂ (aq) + CO2 (g) + H₂O (1)
Answer:
a) Ca (s) + 2 H₂O (l) ---> Ca(OH)₂ (aq) + H₂ (g)
b) Al₂O₃ (s) + 3 C (s) + 3 Cl₂ (g) ---> 2 AICI₃ (s) + 3 CO (g)
c) 2 FeCl₃ (aq) + 3 H₂S (g) ---> Fe₂S₃ (s) + 6 HCI (aq)
d) CaCO₃ (s) + 2 HCI (aq) ---> CaCl₂ (aq) + CO₂ (g) + H₂O (l)
Explanation:
For an equation to be balanced, there must be an equal amount of each type of atom on both sides of the reaction. The reactants are on the left side and the products are on the right side.
a) ------------------------------------------------------------------------------------------------------
The unbalanced equation:
Ca (s) + H₂O (l) ---> Ca(OH)₂ (aq) + H₂ (g)
Reactants: 1 calcium, 2 hydrogen, 1 oxygen
Products: 1 calcium, 4 hydrogen, 2 oxygen
The balanced equation:
Ca (s) + 2 H₂O (l) ---> Ca(OH)₂ (aq) + H₂ (g)
Reactants: 1 calcium, 4 hydrogen, 2 oxygen
Products: 1 calcium, 4 hydrogen, 2 oxygen
b) ------------------------------------------------------------------------------------------------------
The unbalanced equation:
Al₂O₃ (s) + C (s) + Cl₂ (g) ---> AICI₃ (s) + CO (g)
Reactants: 2 aluminum, 3 oxygen, 1 carbon, 2 chlorine
Products: 1 aluminum, 1 oxygen, 1 carbon, 3 chlorine
The balanced equation:
Al₂O₃ (s) + 3 C (s) + 3 Cl₂ (g) ---> 2 AICI₃ (s) + 3 CO (g)
Reactants: 2 aluminum, 3 oxygen, 3 carbon, 6 chlorine
Products: 2 aluminum, 3 oxygen, 3 carbon, 6 chlorine
c) ------------------------------------------------------------------------------------------------------
The unbalanced equation:
FeCl₃ (aq) + H₂S (g) ---> Fe₂S₃ (s) + HCI (aq)
Reactants: 1 iron, 3 chlorine, 2 hydrogen, 1 sulfur
Products: 2 iron, 1 chlorine, 1 hydrogen, 3 sulfur
The balanced equation:
2 FeCl₃ (aq) + 3 H₂S (g) ---> Fe₂S₃ (s) + 6 HCI (aq)
Reactants: 2 iron, 6 chlorine, 6 hydrogen, 3 sulfur
Products: 2 iron, 6 chlorine, 6 chlorine, 3 sulfur
d) ------------------------------------------------------------------------------------------------------
The unbalanced equation:
CaCO₃ (s) + HCI (aq) ---> CaCl₂ (aq) + CO₂ (g) + H₂O (l)
Reactants: 1 calcium, 1 carbon, 3 oxygen, 1 hydrogen, 1 chlorine
Products: 1 calcium, 1 carbon, 3 oxygen, 2 hydrogen, 2 chlorine
The balanced equation:
CaCO₃ (s) + 2 HCI (aq) ---> CaCl₂ (aq) + CO₂ (g) + H₂O (l)
Reactants: 1 calcium, 1 carbon, 3 oxygen, 2 hydrogen, 2 chlorine
Products: 1 calcium, 1 carbon, 3 oxygen, 2 hydrogen, 2 chlorine
what is the solubility of KCI?
Answer:
Potassium chloride.
Calculate the freezing point of a solution that contains 8.0 g of sucrose (C12H22O11) in 100 g of H2O. Kf for H2O = 1.86C/m
Group of answer choices
A. 0.44 degrees Celsius
B. 0.044 degrees Celsius
C. 0.39 degress Celsius
D. 0.22 degress Celsius
The freezing point of the sucrose solution is -0.435°C.
What is the freezing point of the solution?The freezing point of the solution is determined from the freezing point depression formula below:
ΔT = mKf(H₂O)Kf(H₂O) = 1.86 Cm
m is molality of solution = moles of solute/mass of solvent
moles of sucrose = 8.0/342.3 = 0.0233 moles
m = 0.0233/0.1 = 0.233 molal
ΔT = 0.233 m * 1.86°C/m.
ΔT = 0.435 °C.
Freezing point of sucrose solution = 0°C - 0.435°C
Freezing point of sucrose solution = -0.435°C.
In conclusion, the freezing point of sucrose solution is determined from the freezing point depression.
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12 Igneous rocks are formed by (1) sedimentation (2) fossilization (3) volcanic activity (4) freezing/thawing cycles
According to the research, the correct option is 3, Igneous rocks are those formed from a molten product from volcanic activity.
What are Igneous rocks?They are rocks of high resistance, isotropy, brittleness and density that are created from the cooling and solidification of the magma, whether fragmented or compact, that form at erupting volcanoes, that is, this substance, made up of molten rocks and other elements, is found inside the planet.
When the cooling process takes place superficially and quickly, extrusive igneous rocks are produced, among which are obsidian and basalt, they usually appear after the eruption of a volcano, since the ejected lava solidifies.
Therefore, we can conclude that according to the research, the correct option is 3, Igneous rocks are those formed from a molten product from volcanic activity.
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Given the reaction below, if 0.003 g of carbon dioxide is used up, how many grams of oxygen will be produced? (show work)
6 CO2 + 6 H2O → C6H12O6 + 6 O2
9.42 g of lead (ii) nitrate was reacted with 0.655 mol/L potassium iodide to produce 2.64 g of precipitate. What volume of potassium iodide was used in this reaction?
The volume of potassium iodide used will be 0.087 L or 87 mL
Stoichiometric calculationThe equation of the reaction goes thus: [tex]Pb(NO_3)_2(aq) + 2KI --- > PbI_2(s) + 2KNO_3(aq)[/tex]
The mole ratio of the 2 reactants is 1:2.
Mole of 9.42 g [tex]Pb(NO_3)_2[/tex] = 9.42/331.2 = 0.02844 mol
Equivalent mole of KI = 0.02844 x 2 = 0.05688 mol
Volume of 0.05688 mol, 0.655 mol/L KI = 0.05688/0.655 = 0.087 L or 87 mL
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The molar heat of fusion of gold is 12.550 kJ mol–1. At its melting point, how much mass of melted gold must solidify to release 235.0 kJ of energy?
The mass of melted gold to release the energy would be 3, 688. 8 Kg
How to determine the massIt is important to note that the formula for energy is
Q = n × HF
Where
n = number of moles
HF = heat of fusion
Let's find number of moles
235.0 = n × 12.550
number of moles = [tex]\frac{235}{12. 550}[/tex] = 18. 725 moles
The molar mass of Gold is 197g/ mol
We have that;
Number of moles = mass/ molar mass
Mass = number of moles × molar mass
Substitute the values
Mass = 18. 725 × 197
Mass = 3, 688. 8 Kg
Thus, the mass of melted gold to release the energy would be 3, 688. 8 Kg
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Draw a levelled diagram of a Daniel cell and write the half cell equations.
The labelled diagram of Daniell cell is as shown below
The half-reactions of oxidation and reduction taking place on electrodes are shown:
Oxidation at anode: Zn(s)→Zn 2+(aq)+2e −
Reduction at cathode: Cu 2+ (aq)+2e − →Cu(s)
What is Daniell Cell?
A Daniell cell is the best model of a galvanic cell which converts chemical energy into electrical energy. The Daniell cell consists of two electrodes of different metals, Zn and Cu; each electrode is in communication with a solution of its own ion; Zinc sulphate and copper sulphate respectively.
What is the distinction between Daniel cell and voltaic cell?The key difference between Daniell cell and galvanic cell is that Daniell cell operates only copper and zinc as electrodes whereas a galvanic cell can have a mixture of metals as electrodes.
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Modeling Periodic Trends 1:
Why are periodic trends useful?
What are some examples of periodic trends?
What is ionization energy?
What was the purpose of creating your three-dimensional model?
Answer these questions in the discussion and conclusion of your Lab Report:
How does your model represent ionization energy?
What happens to the ionization energy of elements as you move from left to right across a period? Explain the trend.
What happens to the ionization energy of elements as you move down a group? Explain the trend.
In reactions between metals and nonmetals, metals tend to form cations while nonmetals tend to form anions. How does your model show this trend?
The periodic trend is very useful because it helps is understand the properties and reactivities of elements in chemical reactions
Some examples of periodic trends are:
Melting and boiling pointIonization energyElectron affinityElectronegativityAtomic size/ radiusIonic size / radiusWhat is ionization energy?Ionization energy can simply be defined as that energy required to remove a valence electron from an atom of an element in a gaseous state to form a gaseous ions l
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