Answer:
Explanation:
A cation with a 2+ charge will make a stronger ionic bond than a cation with a 1+ charge. A larger ion makes a weaker ionic bond because of the greater distance between its electrons and the nucleus of the oppositely charged ion.
From the following elements: lithium, beryllium, and fluorine, predict which
one will have the largest second ionisation energy. Explain your answer.
Answer:
The element that has the largest second ionization energy is;
Lithium, Li
Explanation:
The given elements and their positions on the periodic table are;
1) Lithium is located in group 1, period 2 position on the periodic table
2) Beryllium is located in group 2, period 2 position on the periodic table
3) Fluorine is located in group 17, and period 2 position on the periodic table
The first ionization energy of the atoms in the periodic table increases across the periods from left to right and also increases from bottom to the top within a group
However for the second ionization energy, which is the energy required to remove an electron from an atom that has one less electron, we have;
The electron configuration of the given of ions that take part in the reaction for the removal of the second ionization energy are;
Li⁺ = [He} 2s⁺
Therefore, the second ionization energy is the removal of an electron from the stable duplet of the helium atom (the core of the lithium atom) which require about 7297 kJ/mol
For beryllium, we have;
Be⁺ = [He]2S¹⁺
Therefore, the second ionization requires the removal of the remaining one electron in the valence shell, which will then lead to the remaining structure of the stable helium core and therefore, the second ionization energy of beryllium is about 1757 kJ/mol, which is low compared to helium
For fluorine, we have;
F⁺ = [He] 2s² 2p⁴⁺
Therefore, the second ionization of fluorine remains high due to the increased attraction of the positively charged fluorine ion for electrons than electrically neutral fluorine atom that has equal number of protons and electrons such that the second ionization energy of fluorine is higher than the first ionization energy and is about 3357 kJ/mol
Therefore, the element that has the largest second ionization energy is lithium, Li.
A student is building an electrical circuit. Which material should she choose for wires, and why.
Look at the screen shot
D. A metal such as copper, because its atom have very mobile electrons - A-p-e-x verified!
Have a Great Day!
If an object is moving right at 10 N and a force is applied from the left at 8N, what is the net force on the object?
Answer:
If an object is moving at a constant speed in a constant rightward direction, then the acceleration is zero and the net force must be zero.
According to Aristotle, a force is anything that causes an item to move "unnaturally." One of the first scientists to explore force and gravity was Sir Isaac Newton. A push or a pull is all that constitutes a force. It might be compared to pushing or pulling on an object.
What is force?An object's push or pull is seen as exerting a force. The interaction of the objects produces push and pull. You can also use words like stretch and squeeze to describe force.The definition of force in physics is. The push or pull on a mass-containing item changes its velocity.
An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. The application of force is the location at which force is applied, and the direction in which the force is applied is known as the direction of the force.
The net force is:
Fnet = Fr - Fl = 10 - 8 = 2N
To know more about force, visit;
https://brainly.com/question/13014979
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A mass of a gas occupies 840cm cube at 750mm pressure, what volume would it occupy at 780mm pressure
The final volume : 807.69 cm³
Further explanationGiven
Initial volume : 840 cm³
Initial pressure : 750 mmHg
Final pressure : 780 mmHg
Required
The final volume
Solution
Boyle's Law
At a fixed temperature, the gas volume is inversely proportional to the pressure applied
[tex]\tt p_1V_1=p_2.V_2\\\\\dfrac{p_1}{p_2}=\dfrac{V_2}{V_1}[/tex]
Input the value :
V₂=(P₁V₁)/P₂
V₂=(750 x 840)/780
V₂=807.69 cm³
Learning about the parts of an atom is important because
It can help us create a better model of an atom.
It can help us create new elements.
It can help us study how cells in the body functions.
It can help us explain the universe.
Answer:
"it can help us explain the universe" or "it can help us study how cells in the body function"
Explanation:
you choose which one you want but their still both technicly right
Scientists say that photosynthesis and cellular respiration create a cycle that is essential to almost all life on Earth. Use your knowledge of these processes to explain how an oil spill that kills a large percentage of the photosynthetic organisms living in the ocean could affect humans.
Answer:
Explanation:
An oil spill is a catastrophic event in the environment. It can negatively affect both plants and wildlife while causing human suffering and economic losses. An oil spill needn't be on the scale of the Exxon Valdez or Deepwater Horizon disasters. The U.S. Environmental Protection Agency (EPA) estimates that 200 million gallons of used oil are disposed of improperly each year.
Spilled oil floats on the surface of the water, blocking the sunlight, from reaching the plants within the body of water. Spilled oil may also directly coat the leaves of plants -- where most of the work of photosynthesis occurs -- reducing or blocking out sunlight. Without sunlight, plants lack the energy needed to undergo photosynthesis.
An oil spill can impact photosynthesis by reducing water quality. Not only does the presence of oil directly poison the water, but the spill can kill sea life, birdlife and other wildlife that uses an aquatic habitat. A large die-off can increase bacteria levels and lower the pH of a body of water. The reduction in water quality can stress plants, essentially halting photosynthesis.
A formula unit is defined as the lowest whole number ratio of
the ions present in an ionic compound. The formula unit of an
ionic compound is always an empirical formula.
What is the formula unit of barium fluoride?
Answer: [tex]BaF_{2}[/tex]
Explanation: Because barium is in Group 2, it forms ions with a charge of +2. Fluorine, in Group 17, form ions with a charge of -1. Cross the charges to get the subscripts (Since Ba has a charge of +2, F has a subscript of 2. Because F has a charge of -1, Ba needs a subscript of 1). Therefore, a formula unit of the compound is [tex]BaF_{2}[/tex].
What is the charge for the cation in AgBr
A blacksmith partners with a team of chemistry and physics graduate students to
develop an anchor for boats that is able to be produced with minimal waste. Which of
the following do scientists need to take into consideration when designing this new
anchor to ensure that it is effective?
A. The color of the metal ions when dissolved in water.
B. The color of the metal
C. How easily the anchor changes temperature.
D. The density of the metal
Answer:
b
Explanation:
ur welcome
I can hit a metal with a hammer without the metal shattering because of its
Malleability
Ductility
Conductivity
Lustrousness
Answer: Malleability
Explanation: cuz ... its right ... lol
Need help on those two please
Answer:
B. Liquid
B. Gas
Explanation:
I majored in Chemistry
Put the levels of organization in order from smallest to largest
Organism
Community
Ecosystem
Population
somebody please help asap
16.
As the elements in Group 17 on the Periodic Table
are considered from top to bottom, what happens
to the atomic radius and the metallic character of
each successive element?
A. The atomic radius and the metallic character
Aboth increase.
B. The atomic radius increases and the metallic
character decreases.
C. The atomic radius decreases and the metallic
character increases.
D. The atomic radius and the metallic character
both decrease.
Answer:
Explanation:
When going from top to bottom in any group of the periodic table, the atomic radius always tends to increase
What is the mass of 6.02 x 1023 particles of rubidium carbonate
Answer:
Explanation:
84.97
A car covers a distance of 22.75 km in 17.04 minutes. Use dimensional analysis to calculate its speed in meters/second. Do not enter units in your answer.
Round to the tenths place or further.
The speed of the car = 22.25 m/s
Further explanationGiven
A distance of 22.75 km
Time = 17.04 minutes
Required
The speed (in m/s)
Solution
Speed is the ratio of distance per time
Can be formulated :
v = d/t
v= speed, m/s
d=distance=m
t=time,s
Input the value :
[tex]\tt v=\dfrac{22.75~km}{17.04~minutes}\times \dfrac{1000~m}{1~km}\times \dfrac{1~minute}{60~second}\\\\v=\boxed{\bold{22.25~m/s}}[/tex]
lord kokichi plz help
what properties influence weather
Answer:
elevation
wind & air pressure
solar radiation
i am not lord kokichi, but much better B)
Answer:
There are six main components, or parts, of weather. They are temperature, atmospheric pressure, wind, humidity, precipitation, and cloudiness. Together, these components describe the weather at any given time.
Explanation:
I AM LORD KOKICHI YOUR WELCOME
Calculate the percent composition of Hydrogen in C6H1206. Periodic table question
Answer:
6.7%
Explanation:
The formula of the compound is given as:
C₆ H₁₂ O₆
The problem here is to find the percent composition of hydrogen.
First;
Find the molar mass of C₆ H₁₂ O₆ = 6(12) + 12(1) + 6(16) = 180g/mol
Secondly;
Percentage composition of H = [tex]\frac{molar mass of H}{Molar mass of compound}[/tex] x 100
Percentage composition of H = [tex]\frac{12(1)}{180}[/tex] x 100 = 6.7%
How many particles are in 34g of Gold?
Answer:
1039.482
Explanation:
PLS HELP ITS URGENT!!!!!!! ILL GIVE BRAINLIEST I PROMISE PLEASE IM BEGGING U HELP ME
Answer:
100%
Explanation:
After distributing the alleles, the genotype Rr will be left in all 4 boxes of the Punnet Square.
How many moles of H 2 will I need to make 5 moles of NH3?
12 SSO
Answer:
7.5 moles of hydrogen is required
Explanation:
Given data:
Number of moles of H₂ needed = ?
Number of moles of NH₃ = 5 mol
Solution:
Chemical equation:
N₂ + 3H₂ → 2NH₃
Now we will compare the moles of ammonia and hydrogen.
NH₃ : H₂
2 : 3
5 : 3/2×5 = 7.5 mol
Thus, 7.5 moles of hydrogen is required.
Can anyone explain and answer?
Which physical change are both exothermic
A)condensation and evaporation
B)evaporation and melting
C)freezing and condensation
D)melting and freezing
Answer:
I would say C.)
Explanation:
Freezing and condensation are both ways that heat is let out from an object.
Which statement best describes the weather shown by the blue triangles going one way and the red semicircles going the other way on a line on a weather map?
A cold front can cause heavy rain, thunder, and lightning.
A stationary front may produce rainy or snowy weather for several days.
An occluded front can cause light to heavy precipitation that may last several days.
A warm front brings drizzly weather.
Answer: The statesmen that best describes the weather shown by the blue triangles going one way and the red semi-circles going the other way on a line in the weather map is “warm front brings drizzly weather.
Answer:
A stationary front may produce rainy or snowy weather for several days.
Explanation:
1-An object starts moving at 7 m/s in the direction of this and then 14 seconds later moves to
42 m/s What is the average acceleration?
Answer:
4.2ms
Explanation:
a=u±at a=42±7 now solve thisThe sun’s core is made of solid rock. True or false
Answer:
False
Explanation:
Heres what its made of:
The core is made of hot, dense plasma (ions and electrons), at a pressure estimated at 265 billion bar (3.84 trillion psi or 26.5 petapascals (PPa)) at the center. Due to fusion, the composition of the solar plasma drops from 68–70% hydrogen by mass at the outer core, to 34% hydrogen at the core/Sun center.
In order to prove that the Law of Conservation Mass is obeyed, what are the coefficients
needed to balance the following reaction:
C3Hg +
02
1
CO2 +
H2O
Answer: [tex]C_3H_8+5O_2\rightarrow 3CO_2+4H_2O[/tex]
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
The balanced chemical equation for combustion of propane will be :
[tex]C_3H_8+5O_2\rightarrow 3CO_2+4H_2O[/tex]
I need help with stoichiometry! if you could help please respond to this question and i will post the question. reason being, no one has answered the questions i have posted, and I need help quickly!
Answer:
will go do that.
Explanation:
1 Condensation
2. Groundwater
3. Infiltration
4. Evaporation
5. Transpiration
6. Precipitation
7. Runoff
8 Solar Radiation
Answer:
Explanation:
A ) Solar Radiation
B ) Evaporation
C ) Transpiration
D ) Condensation
E ) Precipitation
F ) Run Off
G ) Infiltration
H ) Groundwater .
Fish in a frozen lake can survive throughout the winter months due
partially to the fact that lakes don't freeze solid. Fresh water has a density
of 1.00 g/cm3. A piece of ice has a mass of 57g and a volume of 62 cm3.
Give the density of the piece of ice (use the density formula d = m/V) and
explain what will happen to it in the lake.
The ice will float on the lake
Further explanationGiven
Mass of ice 57 g and a volume of 62 cm³
Required
Density
Solution
Density formula:
[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]
Input the value :
ρ = 57 g : 62 cm³
ρ = 0.919 g/cm³
Because the density of ice is less than water, it will float on the lake
.
Given that nitrogen forms
three bonds with hydrogen to
make NH3, how many hydrogen
atoms do you think will bond
with an atom of phosphorous?
Answer:
Three
Explanation:
Nitrogen and phosphorus are on the same group in the periodic table. Elements in the same group have similar chemical properties. This is because of the number of valence electrons that they share among each other.
The valence electrons are the outermost shell electrons found within an atom.
Nitrogen and phosphorus can both be found on the fifth group on the periodic table.
Their oxidation state is:
either 5 or 8-5 = 3Since phosphorus bonds with 3 hydrogen atoms, nitrogen will also do the same.