Answer:
Decreases, increases
Explanation:
Depending on the number of electrons shared, covalent bonds may be single, double or triple. In a single bond, two electrons are shared between bonding atoms. In a double bond, four electrons are shared between bonding atoms while in a tripe bond, six electrons are shared between bonding atoms.
The number of bonds is otherwise referred to as the bond order. The higher the bond order the higher the bond energy and the shorter the bond length. The bond length shortens due to an increase in the s character of the bond.
The only way animals can get energy is by
eating what three nutrients?
Most animals obtain their nutrients by the consumption of other organisms. At the cellular level, the biological molecules necessary for animal function are amino acids, lipid molecules, nucleotides, and simple sugars. However, the food consumed consists of protein, fat, and complex carbohydrates.
Answer:Most animals obtain their nutrients by the consumption of other organisms. At the cellular level, the biological molecules necessary for animal function are amino acids, lipid molecules, nucleotides, and simple sugars. However, the food consumed consists of protein, fat, and complex carbohydrates.
Explanation:
A group of scientists are studying the microhabitat on the inside of a hollow log. Twice a year, they take samples of the wood and make observations about organisms living in the log. They observe that the types of bacteria and fungi living in the log change over time. The properties of the wood inside of the log also change.
Which of the following statements best describes why the types of organisms in the log change over time?
A.
Some organisms are adapted to live in a wide range of conditions.
B.
Organisms in the log do not compete for available resources.
C.
Organisms in the log stabilize the conditions in their environment.
D.
Different organisms are adapted for different conditions.
Answer:
D
Explanation:
I took a study island on this
1. Kaleigh notices when she goes to the beach that sometimes the water rises as high as the pier. At other times of the day, the water barely covers the pillars under the pier. These differences in water level are primarily due to the gravitational influence of which of the following?
a. The Earth’s revolution b. The Moon c. asteroids d. comets
if you drop soap on the floor is the soap dirty or is the floor clean?
Answer:
hahahaha the soappp is dirty and the floor gets clean
How many liters will 90.0 grams of xenon gas (Xe) occupy at STP?
HELP PLEASE
Answer:
22.4L
Explanation:
not sure if its totally correct but I tried
0.45 g of hydrated sodium carbonate crystals were heated until 3.87 of anhydrous power remained.
How many moles of water are there in one mole of hydrated salt?
Formula of hydrated sodium carbonate : Na₂CO₃.10H₂O, so moles of water in one mole of hydrated salt = 10
Further explanationHydrate is a compound that binds water (H₂O), usually in the form of crystals/ solids
If these compounds are dissolved in water or heated, the hydrates can decompose:
Example: X.YH₂O (s) → X (aq) + YH₂O (l)
The formula for the hydrated compound contains: YH2O
The mole ratio shows the ratio of the coefficients of the hydrate compound
10.45 hydrated sodium carbonate(Na₂CO₃.xH₂O) were heated until 3.87 of 3.87of anhydrous (Na₂CO₃) remained, so
mass H₂O released :
[tex]\tt 10.45-3.87=6.58~g[/tex]
mass Na₂CO₃ = 3.87 g
mol ratio Na₂CO₃(MW= g/mol) : H₂O(MW=18 g/mol) =
[tex]\tt \dfrac{3.87}{105,9888}\div \dfrac{6.58}{18}=0.0365\div 0.3655=1\div 10[/tex]
Elements that readily lose electrons tend to have
A) high ionization energy and high electronegativity
B) high ionization energy and low electronegativity
C) low ionization energy and low electronegativity
D) low ionization energy and high electronegativity
Answer:
C) low ionization energy and low electronegativity
Explanation:
Aluminum bromide and chlorine gas react to
form aluminum chloride and bromine gas.
Answer:
ok
Explanation:
I need help please and thank you
Answer:
ooooooooooooooooooh i dont know this one
Explanation:
im not good a math at all
lonic bonds tend to form between
a. nonmetals; nonmetals
b. metals; nonmetals
c. metals; metals
d. all of these
In 17.2 seconds, a shopping cart is pushed 15.6 meters towards the west. What is the velocity of the cart? (hint~The answer is NOT 3m/s)
Answer:
0.91m/s due west
Explanation:
Given parameters:
Time taken = 17.2s
Displacement = 15.6m
Unknown:
Velocity of the cart = ?
Solution:
Velocity of a body is the the displacement divided by the time taken.
Velocity = [tex]\frac{displacement}{time}[/tex]
Now insert the parameters and solve;
Velocity = [tex]\frac{15.6}{17.2}[/tex] = 0.91m/s due west
evanrosario11 avatar
evanrosario11
7 minutes ago
Physics
High School
100 Points + Brainlest PLZ HElP
What ion would each of the following elements form?
For example, a sodium atom (Na) will form a sodium ion (Na+1). You will need to list the charge of the ion. You will need to list the charge of the ion for the seven questions below.
1. Beryllium (Be)
2. Sulfur (S)
3. Potassium (K)
4. Aluminum (Al)
5. Bromine (Br)
6. Oxygen (O)
7. Magnesium (Mg)
Answer:
Forming positive ions
Explanation:
A sodium atom has one electron in its outer shell. ... It will still have 11 positive protons but only 10 negative electrons. So, the overall charge is +1. A positive sign is added to the symbol for sodium, Na +.
Hope it helps
xoxo
Explanation:
Forming Positive Ions
Hope It Helped U
the diagram shows a race car traveling around the racetrack at a constant speed of 150km/hr. at which point on the track is the car accelerating
Answer:
B.
Explanation:
Velocity: the speed of something given direction
Acceleration: increase or decrease of velocity over time
B is the answer because it is the only point on the image that has to slow down and change direction. To turn, a vehicle must slow down so it doesn't skid. Hope this helps!
A race car traveling around the racetrack at a constant speed of 150km/hr at B point on the track is the car accelerating.
What is acceleration ?Acceleration is the rate at which an object's velocity with respect to time changes. They are vector quantities, accelerations. The direction of the net force applied on the item determines the object's acceleration.
An item has positive acceleration if it is accelerating and travelling in the right direction. Positive acceleration was demonstrated in the first case by the fast automobile.
The acceleration is in the same direction as the car's motion since it is moving ahead and speeding up.
The equation a = v/t denotes acceleration ( a ), which is the change in velocity ( v ) over the change in time ( t ). This enables you to calculate the change in velocity in meters per second squared ( m/s² ).
To learn more about acceleration follow the link below;
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where information about each element is located
Answer:
On the pereiodic table.
Explanation:
A tank containing oxygen, carbon dioxide, and nitrogen gases has a total pressure of 6.7
atm. If the O2 has a pressure of 3.0 atm and the carbon dioxide has a pressure of 1.2
what is the partial pressure of the nitrogen gas?
Answer:
P(N₂) = 2.5 atm
Explanation:
Given data:
Total pressure of gasses = 6.7 atm
Partial pressure of O₂ = 3.0 atm
Partial pressure of CO₂ = 1.2 atm
Partial pressure of N₂ = ?
Solution;
According to Dalton law of partial pressure,
The total pressure inside container is equal to the sum of partial pressures of individual gases present in container.
Mathematical expression:
P(total) = P₁ + P₂ + P₃+ ............+Pₙ
Now we will solve this problem by using this law.
P(total) = P(O₂) + P(CO₂) + P(N₂)
6.7 atm = 3.0 atm + 1.2 atm + P(N₂)
6.7 atm = 4.2 atm + P(N₂)
P(N₂) = 6.7 atm - 4.2 atm
P(N₂) = 2.5 atm
how does atomic radius affect coulombic attraction?
Answer:
The bigger the size of the atom, the electrons, especially the valence electrons are further away from the nucleus. The nucleus is not able to pull the electrons, that are in orbitals further away from the nucleus, towards itself and the coulombic attraction decreases.
Explanation:
Which is the correct Lewis dot structure for BeH2 ?
The correct Lewis dot structure for [tex]BeH_2[/tex] is Be : H : H
What does the Lewis dot structure show?The Lewis dot structure shows the valence electrons as dots. The valence electrons of beryllium are shown as 2 dots on the left side of the atom.
The central atom, beryllium, has 2 valence electrons where each hydrogen atom has 1 valence electron. To form a stable molecule, beryllium shares its 2 valence electrons with the 2 hydrogen atoms, each of which shares its 1 valence electron with beryllium which gives each atom a full outer shell of electrons.
Learn more about Lewis dot structure at:
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Which model best represents a pattern?
Antenne UHF
Chaum
RTG
Master
Antenne
grand gain
DAN
REMS
RAD
SAM
Chemin
why does no one love me? when will i feel appreciated?
Answer:
I appreciate you- owo... and people do love you. uwu. even tho I am a stranger I love you :D. ❤
You're the best person anyone could ever ask for. Trust me you're enough <3
1. The heat absorbed when ice melts can
be measured in a unit called a
(1) torr
(2) degree
(3) mole
(4) joule
Answer:
joule
Explanation:
Why does an ionic bond transfer electrons instead of sharing?
When there is a whole transfer of valence electron between the atoms is called an ionic bond. In this type of bond construction, the atoms get contrarily charged.
The ionic bonds are formed due to electronegativity. According to Pauling, the capability of an atom to draw electrons towards itself is called electronegativity.
When there is a huge contrast in electronegativity between the atoms, the electrons are completely transferred between the atoms.
The atom that relinquishes an electron are called a cation and is positive whereas the atom that acquires an electron are called anions and are negatively charged.
Therefore, due to electronegativity, ionic bonds are formed.
To learn more about ionic bonds follow the link:
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A group of tourists were on an outing when they noticed that precipitation began to fall. The air temperature was 32 degree Fahrenheit. What type of precipitation did they most likely see?
Answer:
The correct answer is - rain.
Explanation:
At 32 degrees c or zero degrees Celsius, droplets of water in the atmosphere do not freeze as it is not the temperature at which water freezes but it is the temperature at which ice melts.
At this temperature the water changes its state, below 32 degrees Fahrenheit the water freezes but in the atmosphere, it not freezes necessarily and remains in the liquid state and called super-cooled liquid or water. Above this temperature, water in liquid state.
Thus, the precipitation is in the form of rain.
1. Which pair of atoms will share electrons when a bond is formed between them? Explain why.
A. K and Cl B. Li and I C. Br and Cl D. Ba and I
Answer:
C. Br and Cl
Explanation:
When Br and Cl combines they share electrons between them to form a type of bond called covalent bond.
The sharing of electrons between two atomic species is covalent bond. It usually occurs between two atoms with a low electronegativity difference among them. Br and Cl have low electronegativity difference. Also, the bond forms between non-metalsOnly Br and Cl pair are the non-metals from the given choices.Taking into account the definition of ionic and covalent bonds, the pair of atoms Br and Cl will share electrons when a bond is formed between them.
Ionic bondAn ionic bond is a type of chemical bond that occurs when one atom gives up an electron to the other, in order for both to achieve electronic stability.
This union normally occurs between metal and nonmetal elements with different electronegativity, which means that the elements have different capacity to attract electrons.
In other words, an ionic bond is produced between metallic and non-metallic atoms, where electrons are completely transferred from one atom to another. During this process, one atom loses electrons and another one gains them, forming ions. Usually, the metal gives up its electrons forming a cation to the nonmetal element, which forms an anion.
Covalent bondOn the other side, the covalent bond is the chemical bond between atoms where electrons are shared, forming a molecule.
Covalent bonds are established between non-metallic elements, such as hydrogen H, oxygen O and chlorine Cl. These elements have many electrons in their outermost level (valence electrons) and have a tendency to gain electrons to acquire the stability of the electronic structure of noble gas. The shared electron pair is common to the two atoms and holds them together.
This caseIn this case, considering that K, Li and Ba are metallic atoms and Cl, I and Br are non-metallic atoms, the pair of atoms Br and Cl will share electrons when a bond is formed between them.
Learn more:
brainly.com/question/5394701?referrer=searchResultsbrainly.com/question/12144907?referrer=searchResultsbrainly.com/question/14614895?referrer=searchResults brainly.com/question/24755818?referrer=searchResults brainly.com/question/24776745?referrer=searchResultsConsider the following reaction: 3Fe(s) + 4H₂O(g) ➞ Fe₃O₄(s) + 4H₂(g). To answer the following question: "How many moles of hot water vapor (steam) must react to produce 275 g of Fe₃O₄?" How many steps will it take to get the answer? *
4 points
1
2
3
4
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True or False: Sulfur by itself isn't too bad, it's when it reacts with other elements that it can become dangerous
Answer:sulfer by itself is not pleasant and it can be dangerous by itself but in large amounts.
Explanation:
Answer:
True.
Explanation:
Also did you know that it is combined with chlorine that it becomes salt? Cool right? Two deadly things combining to become a condiment
What was J.J. Thomson's Model known as?
A. The Pizza Model
B. The Chocolate Chip Model
C. The Mint Chocolate Chip Model
D. The Butterscotch Model
Answer:
B.The Chocolate Chip Model
Explanation:
Question 20 (1 point)
The chemical formula for glucose, a simple sugar, is CH1206. The formula for ethanol is CzH60. What
accounts for the differences in these compounds?
Answer:
A. The ratio of the element in glucose is different than in ethanol
Explanation:
The compounds given are;
Glucose C₆H₁₂O₆
Ethanol C₂H₆O
The two compounds given are different from one another. But they have the same elemental composition.
Ethanol is made up of Carbon, hydrogen and Oxygen and so also, Glucose
Now,
The number of atoms in both compounds are different;
Number of atoms
C H O
Glucose 6 12 6
Ethanol 2 6 1
atoms are so small that approximately _________ of them can fit on the head of a needle?
Answer:
5 million
Explanation:
If one jellybean weighs 0.350g how many jelly beans are in 504g of jellybeans?
Answer:
1440g
Explanation:
Divide 504g by 0.350g