Considering the mechanism -
Step 1: A + B → AB
Step 2: AB + C → AC + B
Overall: A + C → AC
Here AB is the intermediate and B is a catalyst.
AB is an intermediate of the reaction because it is formed and completely utilized in the reaction mixture by itself.
A catalyst is a type of species which is added to the reaction mixture but it remains unchanged as it do not participate in the overall reaction. A catalyst helps the reaction to form the products at a faster rate.
Intermediate is formed from the reactants which interacts to produce immediately visible products of a chemical reaction, while catalyst results in speeding up of a chemical reaction and it is not consumed in the reaction.
Complete question is -
Macmillan Learning
Consider the mechanism.
Step 1: A + B → AB
Step 2: AB + C → AC + B
Overall: A + C → AC
Which species is an intermediate?
A
AB
AC
B
Which species is a catalyst?
AC
B
AB
A
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23423456789098765432
366373838384774738393
Explanation:
267277777727777525256 ;)
The filament in an electric lightbulb is made from
What are some characteristics that show a tree is living?
Select all that apply.
It has no cells.
It doesn’t respond to the environment.
It grows.
It moves.
It reproduces.
QUESTION 3Which of the following images represent the atomic structure of Fe2*, The circle represents the nucleus andthere are subatomic particles shown inside and outside the nucleus. (The shells are omitted)26e-23e-24e-23e
To solve this question, we need to know the mass number and atomic number of Fe. For this, we look at the periodic table.
Mass number of Fe: 55
Atomic number: 26
- The number of protons is equal to the atomic number of the element. So the number of protons (p+) is 26.
- The number of electrons in an atom that is neutral is the same as its number of protons. In this case, we don't have a neutral atom, we have a cation, Fe²⁺. The charge 2+ means that it lost 2 electrons in relation to its neutral atom. So we just subtract 26 - 2 = 24. The number of electrons (e-) is equal to 24.
- The number of neutrons we calculate using the following formula:
n = A - p
where: n = number of neutrons; A = atomic mass; p = number of protons.
A = 55
p = 26
n = 55 - 26 = 29
n = 29
Answer: p+ = 26
e- = 24
n = 29
Alternative "C"
BaCl₂ + H₂SO4
Ba=
Cl=
H=
→ BaSO4 + HCI
Ba=
Cl=
H =
The balanced equation is BaCl₂ + H₂SO₄ → BaSO₄ + 2HCI.
What is Chemical Reaction ?Chemical reaction is a type of reaction in which one or more substances means reactants are converted to one or more different substances means products are formed.
The given reaction is
BaCl₂ + H₂SO₄ → BaSO₄ + HCI.
Reactant side Product Side
Ba = 1 Ba = 1
Cl = 2 Cl = 1
H = 2 H = 1
S = 1 S = 1
O = 4 O = 4
Here we can see that in the reactant side there are 2 Cl atoms and on the product side there is 1 Cl atom. Also on the reactant side there are 2 H atoms and on the product side there is 1H atom. To balance the above equation multiply by 2 on the product side.
BaCl₂ + H₂SO₄ → BaSO₄ + 2HCI.
Reactant side Product Side
Ba = 1 Ba = 1
Cl = 2 Cl = 2
H = 2 H = 2
S = 1 S = 1
O = 4 O = 4
From the above equation we can see that the given equation is now balanced.
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NOTE: The given question is incomplete on the portal. Here is the complete question.
Question: Balance the given chemical equation:
BaCl₂ + H₂SO₄ → BaSO₄ + HCI.
How many grams are in 0.90 mol of lead?
Answer:
[tex]186.3\text{ g}[/tex]Explanation:
Here, we want to get the mass of 0.90 mol of lead
To get the mass, we use the following formula:
[tex]\text{ mass = No of moles }\times\text{ atomic mass/molar mass}[/tex]The atomic mass of lead is 207 amu (this is obtainable from the periodic table)
Thus, we have the mass as:
[tex]0.90\text{ }\times\text{ 207 = 186.3 g}[/tex]A project is estimated to take 300 hours but can be completed whenever the team has spare time. Three employees will take turns working on the project. The first employee completes one-third of the project. The second completes one-fifth of the work remaining. The third completes one-half of the work remaining. How many hours are left for the fourth employee to complete?
The number of hours left for the fourth employee to complete would be 80 hours.
Algebraic problemThe total number of hours to complete the entire project = 300 hours.
The first employee completes one-third of the project:
1/3 x 300 = 100 hours.
The remaining hours would be: 300 - 100 = 200 hours.
Now, the second employee completes one-fifth of the work remaining:
1/5 x 200 = 40 hours.
200 - 40 = 160 hours.
A total of 160 remain after the 2 employees have completed their work.
Now, the third employee completes one-half of the remaining work:
1/2 x 160 = 80 hours.
The total number of hours left for the fourth employee to complete is, therefore, 80 hours.
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At a birthday pool party, the temperature is 27.50°C and the atmospheric pressure is 755.4 mmHg. One of the decoration helium balloons has a volume of 6.25 L. What would be the volume of the balloon if it were submerged in a swimming pool to a depth where the pressure is 922.3 mmHg and the temperature is 25.35°C?
The new volume of the balloon, given that it was submerged to a depth where the pressure is 922.3 mmHg and the temperature is 25.35 °C is 5.08 L
How to determine the new volumeFrom the question given above, the following data were obtained:
Initial temperature (T₁) = 27.50 °C = 27.50 + 273 = 300.5 KInitial pressure (P₁) = 755.4 mmHgInitial volume (V₁) = 6.25 L New pressure (P₂) = 922.3 mmHgNew temperature (T₂) = 25.35 °C = 25.35 + 273 = 298.35 KNew volume (V₂) =?The new volume can be obtained by using the combined gas equation as illustrated below:
P₁V₁ / T₁ = P₂V₂ / T₂
(755.4 × 6.25) / 300.5 = (922.3 × V₂) / 298.35
Cross multiply
300.5 × 922.3 × V₂ = 755.4 × 6.25 × 298.35
Divide both side by (300.5 × 922.3)
V₂ = (755.4 × 6.25 × 298.35) / (300.5 × 922.3)
V₂ = 5.08 L
Thus, the new volume is 5.08 L
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How many molecules of acetylene (C2H2) are in 1.79 moles of acetylene
The simplest alkyne chemical molecule, known as acetylene chemically, is C2H2. Ethyne, Narcy Len, and Vinylene are other names for acetylene.
C2H2 has how many moles?Two. C2H2 molecules contain 2 carbon atoms each. As a result, there are 2 moles of carbon atoms in every mole of C2H2. You may determine how many moles of an element there are in one mole of a compound by looking at the subscripts in any formula.
The C2H2 chemical formula
Acetylene has the extended chemical formula CHCH and the chemical formula C2H2. Acetylenes' molar mass can be expressed as 26.04 g/mol-1.
Grams Acetylene = 46.60673120000018
Mol = 1.79.
C2H2 molecule
Acetylene, C2H2 / Formula is below.
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Convert 3.20 bar to atm
Answer:
~3.15815
Explanation:
Approximated Formula: Divide pressure value(bar) by 1.013
Bar and atm are significant units of pressure where, 1 bar is equal to 0.98 atm. 3.20 bar of pressure is equivalent to 3.15 atm.
What is pressure?Pressure is the force exerted in a surface per unit area. Hence, pressure has the unit of N/m². Pressure of a substance is depending on the volume and temperature.
The standard unit (SI unit) of pressure is atm or atmospheric pressure. Other units of pressure are bar, pascal, torr, mmHg etc. The normal atmospheric pressure is 1 atm.
The units of pressures can be interchanged with the specific relation between them.
1 bar of pressure = 0.987 atm
then, 3.20 bar = 3.20 bar × 0.987 atm/1 bar = 3.15 atm.
Therefore, 3.20 bar pressure is 3.15 atm .
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In a paragraph, explain Le Chatelier's Principle, give examples
Explanation:
Le Chatelier's principle states that if a dynamic equilibrium system is disturbed by changing for example pressure, temperature, or concentration of products or reactants, the equilibrium will shift in the opposite direction to offset the change.
----
An example to understand better this principle:
Given a general reaction in equilibrium:
A (g) + B (g) <=> C (g) + D (g) ΔH < 0 (it means an exothermic reaction)
This reaction can be seen as follows:
A (g) + B (g) <=> C (g) + D (g) + energy (exothermic reaction = releases energy)
If the temperature increases or heat is added, the equilibrium will shift to the left because of the principle. (There are many examples)
How many grams of NaOH are required to neutralize 700 mL of 3.0 M HCl?
A gram of NaOH required to neutralize 700 ml HCL is 84 grams.
Neutralization or neutralization is a chemical response in which an acid and a base react quantitatively with each different. I
Moles of solute = Molarity × Liters of solution
= 3 × 0.7 L
= 2.1 mole
The molar mass of NaOH = 40
mass of NaOH = 40 × 2.1 g
= 84 gram.
A neutralization response may be described as a chemical reaction in which an acid and base quantitatively react together to shape salt and water as products. In a neutralization response, there's a combination of H+ ions and OH– ions that form water.
A neutralization response is when an acid and a base react to shape water and salt and includes the mixture of H+ ions and OH- ions to generate water. The neutralization of a sturdy acid and robust base has a pH equal to 7.
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Which of the following is the most basic?
A solution with [OH-] = 1.0×10-10.
A solution with [H+] = 1.0×10-10.
A solution with a pH of 6.
A solution with [OH-] = 1.0×10-6.
A solution with [H+] = 1.0×10-6.
Answer:
A solution with [H+] = 1.0×10-10
Explanation:
Using the equations: pOH = -log([OH-]), pH = -log([H+]), and pH + pOH = 14
To find the most basic solution, find the pH or the pOH.
The pOH of solution 1 is 10, which means the solution is acidic (pH = 4)
The pH of solution 2 is 10, which is quite basic
The pH of solution 3 is 6. slightly acidic
The pOH of solution 4 is 6, and has a pH of 8. Slightly basic
The pH of solution 5 is 6, slightly acidic
Out of all of these, solution 2 and 4 are basic. Solution 2 has a pH of 10, which is more basic than solution 4 with a pH of 8
Pure Aluminum foil
distilled water
NaCl (table salt)
Gold Bar (pure Au)
All of these may be classified as
Responses
A organic compound.organic compound.
B compounds.compounds.
C pure substances.pure substances.
D elements.
Pure Aluminum foil ,Gold Bar (pure Au) is element and element is pure substance. distilled water, NaCl (table salt) is pure substances .
Pure substance are the kind of matter which cannot be separated into its constituent particle . pure substance made up of only the one kind of matter.
Element is made up of only one type of atom .An element is a pure substance which contain only one kind of atom and cannot be separated by into simpler substances. Therefore , elements comes under pure substances.
Thus, Pure Aluminum foil ,Gold Bar (pure Au) is element and element is pure substances. distilled water, NaCl (table salt) is pure substances .
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what properties of semiconductors make the useful in electronic devices
Useful electronic devices are perfect insulators.
Semiconductors are perfect insulators. The electron density in the conduction band at room temperature is not as high as that of metals, so they cannot conduct electricity as well as metals. The electrical conductivity of semiconductors is not as high as metals, but not as bad as electrical insulators. Low power loss. Semiconductors are getting smaller and lighter.
Resistivity is higher than conductors and lower than insulators. The resistance of semiconductor materials decreases with increasing temperature and vice versa. Conductivity level is the main difference between conductors semiconductors and insulators. Conductors are highly conductive. In other words, an energy such as electric heat, and sound can be easily conducted. Semiconductors allow moderate flux while insulators are poor conductors.
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Which two actions are examples of science influencing technology?A. Using the internet to publish and share new scientific discoveriesB. Using research about kingfishers to design a more efficient high-speed trainC. Studying how infections spread through the body in order tobetter understand bacteriaD. Using observations about plant seed structures to develop hook-and-loop fasteners
The two actions that are examples of science influencing technology are:
A) Using the internet to publish and share new scientific discoveries.
D) Using observations about plant seed structures to develop hook-and-loop fasteners. Option A and D
These examples illustrate how scientific advancements and knowledge have influenced the development and application of technology.
Using the internet to publish and share new scientific discoveries is a prime example of science influencing technology. The internet has revolutionized the way scientific information is disseminated, allowing researchers to publish their findings rapidly and share them globally.
This has facilitated collaboration, accelerated the spread of scientific knowledge, and enhanced the efficiency of scientific communication. The internet has also given rise to platforms for open-access journals and online scientific communities, enabling greater accessibility and the democratization of scientific information.
Using observations about plant seed structures to develop hook-and-loop fasteners is another instance of science influencing technology. Scientists studying the natural world have observed the mechanisms by which certain plants disperse their seeds.
One such example is the observation of burrs or burdock plants that use tiny hooks to attach to animal fur or clothing. Inspired by these observations, scientists developed hook-and-loop fasteners, commonly known as Velcro, which mimics the natural hooking mechanism of the plant seeds.
This technology has found widespread applications in various fields, including clothing, aerospace, and medicine, offering a versatile and efficient fastening solution.
These examples highlight the reciprocal relationship between science and technology, where scientific discoveries and knowledge contribute to technological advancements, while technological developments, in turn, provide new tools and capabilities for scientific research and exploration.
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13) If the oxidation number of nitrogen in a certain molecule changes from +2 to -2 during a reaction, how many electrons are gained (or lost) by each nitrogen atom?
Answer:
4 electrons were gained
Explanation:
Here, we want to get the number of electrons gained or lost
From what we have, there was a change from a positive value to a negative one
Since electrons are negatively charged entities, it means that the nitrogen atoms gained electrons.
For the change to have occurred, there must have been a matching of two electrons initially, then another two electrons
Thus, we have the total number of electrons gained as 4
QUESTION 13
What mass of 45.0% Ba(NO3)2 solution contains 40.0 grams of Ba(NO3)2?
88.9 grams of 45.0% Ba(NO3)2 solution contains 40.0 grams of Ba(NO3)2?
What is barium nitrate ?
The toxic and colorless inorganic substance with chemical formula
Ba(NO3)2 is barium nitrate. The exposure of this compound to flame gives a green-colored flame. The most common use of this compound is pyrotechnics.
Let x grams of Ba(NO₃)₂, solution contains 40 grams Ba(NO₃)₂
Then, 45% of x = 40
[tex]\frac{45}{100}[/tex] × x = 40
x = 88.9 grams
Thus we can conclude that 88.9 grams of 45.0% Ba(NO3)2 solution contains 40.0 grams of Ba(NO3)2
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Consider the reaction between copper(II) chloride and aluminum.Write the general skeleton reaction.Write the balanced reduction half reaction.Write the balanced oxidation half reaction.Write the balanced net ionic equation.Write the full balanced redox reaction.
Answer:
• General skeleton reaction:
[tex]CuCl_{2}+Al\operatorname{\rightarrow}AlCl_{3}+Cu[/tex]• Balanced reduction half reaction:
[tex]3Cu^2+6e^-\operatorname{\rightarrow}3Cu^0[/tex]• Balanced oxidation half reaction:
[tex]2Al^0\operatorname{\rightarrow}2Al^3+6e^-[/tex]• Balanced net ionic equation:
[tex]3Cu^{+2}+2Cl^{-1}+2Al^0\operatorname{\rightarrow}3Cu^0+2Al^{+3}+3Cl^{-1}[/tex]• Full balanced redox reaction:
[tex]3CuCl_2+2Al\rightarrow2AlCl_3+3Cu[/tex]Explanation:
1st) It is necessary to write the skeleton reaction (unbalanced reaction):
[tex]CuCl_2+Al\rightarrow AlCl_3+Cu[/tex]In the reaction, copper (II) chloride react with aluminum to produce aluminum chloride and copper.
2nd) We need to know the oxidation number of each atom in the reaction, then we can find the element that oxidized and the element that id reduced:
Oxidation numbers:
+2 -1 0 +3 -1 0
[tex]CuCl_{2}+Al\operatorname{\rightarrow}AlCl_{3}+Cu[/tex]With the oxidation number we can see that Al goes from 0 to +3, so the aluminum atom oxidizes. And, the copper atom goes from +2 to 0, so it is reduced.
3rd) To write the balanced reduction half reaction, it is necessary to balance all elements except oxygen and hydrogen (in this case, there is no oxygen or hydrogen atoms).
[tex]Cu^{+2}+2e^-\rightarrow Cu^0[/tex]Then, it is important to balance the electrons in each half reaction, so in the Cu half reaction we have to multiply everything by 3:
[tex]\begin{gathered} (Cu^2+2e^-\operatorname{\rightarrow}Cu^0)*3 \\ 3Cu^2+6e^-\operatorname{\rightarrow}3Cu^0 \end{gathered}[/tex]4th) To write the balanced oxidation half reaction, we have to proceed like in the previous step:
[tex]Al^0\rightarrow Al^{+3}+3e^-[/tex]We have to balance the electrons here too, but in this case we have to multiply by 2:
[tex]\begin{gathered} (Al^0\operatorname{\rightarrow}Al^3+3e^-)*2 \\ 2Al^0\operatorname{\rightarrow}2Al^3+6e^- \end{gathered}[/tex]Note: Electron balance is done to cancel out the electrons in both reactions, so we need to have the same number of electrons on each side of the half reactions.
5th) Now, we can write the balanced net ionic equation, without the electrons:
[tex]3Cu^{+2}+2Cl^{-1}+2Al^0\operatorname{\rightarrow}3Cu^0+2Al^{+3}+3Cl^{-1}[/tex]6th) Finally, we can write the full balanced redox reaction, including the other elements, in this case Cl:
[tex]3CuCl_2+2Al\rightarrow2AlCl_3+3Cu[/tex]The same organic molecule has a mass of 2.49x10^-19 mg. what is the molecular formula?Previous question:an organic compound which is commonly found in fragrances and flavors was determined to contain Carbon, Hydrogen, and Oxygen. It contains 64.00% Carbon and 4.03% Hydrogen by mass. Determine the empirical formula.Answer: C3H2O
The empirical formula is simply the ratio of each atom in the molecule.
The molecular formula is the actual number of each atom in one molecule.
To find it, we need to first find the mass of the empirical formula.
The empirical formula is C₃H₂O, so it has 3 carbon, 2 hydrogen and 1 oxygen.
The mass of these atoms are:
- Carbon: approximately 1.99 x 10⁻²⁰ mg
- Hydrogen: approximately 1.67 x 10⁻²⁰ mg
- Oxygen: approximately 2.66 x 10⁻²⁰ mg
So, the mass of the empirical formula is:
[tex]\begin{gathered} m_e=3\cdot1.99\times10^{-20}mg+2\cdot1.67\times10^{-20}mg+1\cdot2.66\times10^{-20}mg \\ m_e=(5.97+3.34+2.66)\times10^{-20}mg \\ m_e=11.97\times10^{-20}mg \\ m_e=1.197\times10^{-19}mg \end{gathered}[/tex]Now, we can see how many of this empirical formula we have in the molecular formula, so we divide the given mass of the molecule by the mass of the empirical mass:
[tex]\frac{2.49\times10^{-19}mg}{1.197\times10^{-19}mg}=\frac{2.49\times\cancel{10^{-19}mg}}{1.197\times\cancel{10^{-19}mg}}=2.0802\ldots\approx2[/tex]That is, the actual mass of the molecule is double the mass of the empirica formula, which means that we have twice as many of each atom in th molecular formula:
Molecular formula: (C₃H₂O)₂ -> C₆H₄O₂
Is this correct your basically dividing and multiply and can you create a graph of this data table? Pleaseee help I’m so lost
According to the given table, the last three spaces in "Calculate constant PV" are:
[tex]\begin{gathered} 15.0\cdot69.9=1048.5 \\ 17.5\cdot58.8=1029 \\ 20.0\cdot50.7=1014 \end{gathered}[/tex]We will plot a graph using the values of volume in the x axis, and the values of pressure in the y axis. Once we plot each of the points, we will obtain this graph:
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1.00 mole of neon weighs 20.1797 g. This is its periodic table atomic weight in grams. The volume is specified as 22.4 L.
What is neon gas?The chemical element neon has the symbol Ne and the atomic number 10. It is classified as a noble gas. Under normal conditions, neon is a colorless, odorless, inert monatomic gas with about two-thirds the density of air. Neon is also used in the manufacture of high-voltage indicators and switching equipment, lightning arresters, diving equipment, and lasers. The cryogenic refrigerant liquid neon is very important. It has more than 40 times the refrigerating capacity per unit volume of liquid helium and more than three times the refrigerating capacity of liquid hydrogen. It can be found in trace amounts in both the Earth's atmosphere and the Earth's crust. It is commercially produced from liquid air using a process known as fractional distillation.1. 1.00 mole of neon weighs 20.1797 g. This is its periodic table atomic weight in grams. The volume is specified as 22.4 L.
2. This means that 22.4L of gas contains one mole of molecules. As a result, 112 cm3 of gas contains 5 10-3 moles of molecules.
3. The atomic mass of the Cl atom is 35.453 atomic mass units. This is the weighted average mass of chlorine in nature, including its isotopes. This means that one mole of chlorine atoms weighs 35.453 grams.
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Arrange the following elements in order of increasing size: Al, B, K, and Na
B < Na < Al < K
Explanations:The size of elements in the periodic table increases from right to left and top to bottom down the group.
For the given question, we will arrange the elements based on atomic size.
For the given elements
• Aluminum has an atomic number of 13
,• Boron has an atomic number of 5
,• Potassium has an atomic number of 19
,• Sodium has an atomic number of 11.
The increasing size will be based on their increasing atomic number and position in the periodic table.
The required increasing size will be B < Na < Al < K
Hydrogen is 99% 1H, 0.8% 2H, and 0.2% 3H. Calculate its average atomic mass.
Which is the equation for a machine's efficiency? (1 point)
O Efficiency=input energy
O Efficiency=
input energy
output energy
output energy
input energy
-
-
output energy
100
O Efficiency
O Efficiency=input energy + output energy
100
The efficiency of the machine can be obtained from the expression;
Work output/ work input * 100/1
What is the efficiency?The term efficiency has to do with the way in which energy is converted to a good use in the machine. Let us note that a machine is efficient when most of the work done by the machine has been put to a good use. This is shown by a very high value of the efficiency.
Let us note that a machine can only be able to do a useful work when the efficiency of the machine is high and the machine is able to do quite a whole lot of useful work as we shall see below.
As such, we define the efficiency as the ratio of the work input to the the work output multiplied by a hundred. We are now trying to obtain the equation that can more aptly be said to be the efficiency of the machine.
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////////////////////////////////////////////////////////
\
Answer:
///////////////////////////////////\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
Explanation:
What is the ionization energy of 30 g lithium when it is vaporized?
(1st ionization energy = 245 KJ/mole)
10.58 * [tex]10^{-2}[/tex] KJ ionization energy is needed to vaporized lithium.
What is ionization energy or enthalpy?Ionization energy may be defined in basic words as a measurement of an atom's or ion's propensity to give up an electron or the difficulty in removing an electron from one.
Mass of lithium = 30 gm
Ionization enthalpy of lithium = 245 KJ/mole
Now calculate moles of lithium = [tex]\frac{Given\ mass}{molar\ mass}[/tex]
no. of moles = [tex]\frac{30}{6.941}[/tex]
no. of moles = 4.32 moles
For 1 mole of lithium ionisation enthalpy = 245 KJ
for 4.32 mole of lithium ionisation enthalpy = 245 *4.32 KJ
= 10.58 * [tex]10^{-2}[/tex] KJ
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7.0 x 10^7 ÷ 2.0 x 10^4
scientific notation
Answer:
3.5x10^3
Explanation:
When plugging this into the calculator and dividing them, the answer you get is 3,500.
In scientific notation, you want the decimal to be after the first number (in this case being the 3).
In 3500, our decimal is after the number (0), so we will be moving this decimal place 3 times to the left in order to be placed after the 3.
Now we have 3.500, and since to go back to the original number we had (3500.) we have to move the decimal back 3 places to the right (moving to the right is a positive number), then our answer would be 3.500x10^3.
Now we have to look for how many significant figures we need in our final answer. Since the numbers in our question are 7.0 and 2.0, they both have a total of 2 significant figures, meaning that our final answer has to have 2 significant figures.
Then, our final answer is 3.5x10^3.
***When multiplying or dividing, we round our final answer to the least number of significant figures in the numbers from our question.
***When adding or subtracting, we round our final answer to the least number of decimal places in the numbers from our question.
Jolie is staring at the Moon with her brother and comments that it looks "gibbous." What does Jolie mean by this
OA. The Moon looks rounded on both sides.
The Moon looks narrow.
The Moon looks narrow on one side and round on the other.
The Moon is just a small sliver.
B.
OC.
OD.
According to the given statement Jolie mean by The Moon looks rounded on both sides.
The correct option is A.
Why is it called a gibbous?Waxing gibbous refers to a moon that is more than halfway full and continues to increase its luminous surface. Gibbous, which means "hump" in Latin, has been used for centuries to refer to rounded or convex forms, such as enlarged eyes or a camel's back.
What happens during a gibbous?Gibbous Moon refers to the phase of the Moon when the side that faces Earth appears to be more than half-lit by the Sun but is less than fully lit. From new Moon through full moon and back, the lunar month, which is the full cycle of the Moon's stages, lasts 29 days.
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The complete question is -
Jolie is staring at the Moon with her brother and comments that it looks "gibbous." What does Jolie mean by this
A. The Moon looks rounded on both sides.
B. The Moon looks narrow.
C. The Moon looks narrow on one side and round on the other.
D. The Moon is just a small sliver.
which element in period 3 has the greatest tendency to lose an electron?
The element in period 3 that has the greatest tendency to lose an electron is Sodium (Na)
Sodium is the first element in the period 3. In the periodic table, atomic size or atomic radius decreases from left to right.
We know that, higher the atomic radius higher the tendency to lose an electron by the element. In addition to that, sodium has only one valence electron in their outermost orbitals which would be easily lost to attain a stable state.
Thus, Sodium (Na) with higher atomic radius in period 3 and one valence electron in their outermost orbitals would have the higher tendency to lose an electron.
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