(03.03 LC)
Which of the following describes a covalent bond?
Answer:
It is the sharing of electrons between atoms with an electronegativity difference below 1.7.
Explanation: Covalent bond is the bond which is formed with the sharing of the electrons between the two atoms which are taking part in the bond.
Answer: Covalent bond, in chemistry, the interatomic linkage that results from the sharing of an electron pair between two atoms. The binding arises from the electrostatic attraction of their nuclei for the same electrons.
Explanation: A covalent bond forms when the bonded atoms have a lower total energy than that of widely separated atoms.
explain why there is a period of constant temperature during melting and freezing. use
Answer:
Because the heat energy provided at the moment of melting and freezing are used up in the transformation of the state of matter!!
Thus the temperature remains the same
What is the molecular formula of a compound with an empirical formula P2O5 and a gram-molecular mass of 284 grams? And why?
5N
12N
7N
HELP HELP
Answer:
Balanced
0N Stationary
Explanation:
One side = 5N + 7N = 12 N
Other side= 12 N
Equal newton so it's a balanced forced :
Balanced
0N Stationary
I hope i am understood and am right!
What is a physical property of water? *
not flammable
reacts with sodium
liquid at room temperature
Identify which is the result of a physical rather than
a chemical change?
Answer:
b
Explanation:
What is acetic acid (CH3COOH)
Answer:
Acetic acid (CH3COOH), also called ethanoic acid, the most important of the carboxylic acids. A dilute (approximately 5 percent by volume) solution of acetic acid produced by fermentation and oxidation of natural carbohydrates is called vinegar; a salt, ester, or acylal of acetic acid is called acetate.
Answer:
the acid that gives vinegar its characteristic taste. The pure acid is a colourless viscous liquid or glassy solid.
Explanation:
HOPE IT HELPS YOU......
Which process is responsible for changing the composition of rock?
erosion
abrasion
chemical weathering
mechanical weathering
Answer:
chemical weathering
Explanation:
Chemical weathering is the process responsible for changing the composition of rocks.
WHAT IS WEATHERING?Weathering is the process by which rocks are broken down into smaller or tiny pieces.
There are different types of weathering namely;
Chemical weatheringMechanical weatheringChemical weathering is the type of weathering that changes the chemical composition of rocks.
Learn more about chemical weathering at: https://brainly.com/question/14426457
HELP ASAP PLEASE!!!!
Answer:
solid objects
cooler to warmer
sitting on a metal chair.
Explanation:
im correcr
What hold elements together to form compounds
Answer:
Chemical bonds are forces that hold elements together. it can be either covalent or ionic bonds that are these chemical bonds.
what is the phenotype for the genotyep WW ?? I NEED HELP ASAP HELPP MEEEEE
Answer:
The genotype for the pink flower is RW, and the genotype for the white flower is WW. This would lead to a 50 percent chance of the offspring having a phenotype of pink
Explanation:
Which one of these best describes an adaptation?
Answer:
c
Explanation:
Answer:
C
Explanation:
If not C it is D
Does the atomic number of an element equal the number of neutrons in an atom of that element?
Answer:
no
Explanation:
the atomic number the just the number below the symbol of the element as well as proton number or electron number, however if u want to work out the neutron number you have do mass number (which is on the top of the symbol) substact atomic number/proton number
A exothermic reaction requires energy, produces energy, is energy-neutral.
Answer:
An exothermic reaction is going to produce energy.
Explanation:
rAn exothermic reaction is going to release energy meaning that your ending product will be negative. However if it is an endothermic reaction, it is going to absorb energy/requires energy, and will have an ending product that is positive.
Beryllium oxide is heated.
What is the chemical reaction equation?
Answer:
BeO
Reaction of beryllium with air
However, powdered beryllium metal does burn in air to give a mixture of white beryllium oxide, BeO, and beryllium nitride, Be3N2. Beryllium oxide is more normally made by heating beryllium carbonate. 2Be(s) + O2(g) → 2BeO(s)
I NEED HELP NOW!!!!!!!!!!!
Which ball (frame A or B) is moving with a higher velocity when it strikes the ground, and which ball has the greatest kenetic energy?
A: the ball in frame A had the highest velocity, and the ball in frame B has the highest kinetic energy
B: the balls in frame A and B have the same velocity, while the ball in frame B had the highest kenetic energy
C: the ball in frame B has the highest velocity and the highest kenetic energy
D: the ball in frame A has the highest velocity and the highest kenetic energy
A: the ball in frame A had the highest velocity, and the ball in frame B has the highest kinetic energy
SHOW WORK
What volume of 9.0 M copper (II) sulfate stock solution is needed to prepare 3.0 L of a 5.0 M solution?
Answer:
The volume of 9.0 M copper (II) sulfate stock solution needed to prepare 3.0 L of a 5.0 M solution is 1.667 L
Explanation:
Dilution is a process by which the concentration of a solute in solution is reduced by adding more solvent.
In other words, dilution is the procedure followed to prepare a less concentrated solution from a more concentrated one, and it simply consists of adding more solvent.
In a dilution the amount of solute does not vary. What varies in a dilution is the volume of the solvent: as more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.
The equation used in this case is:
Ci * Vi = Cf * Vf
where
Ci: initial concentration Vi: initial volume Cf: final concentration Vf: final volumeIn this case:
Ci: 9 M Vi: ? Cf: 5 M Vf: 3 LReplacing:
9 M*Vi= 5 M* 3 L
Solving:
[tex]Vi=\frac{5 M*3 L}{9 M}[/tex]
Vi= 1.667 L
The volume of 9.0 M copper (II) sulfate stock solution needed to prepare 3.0 L of a 5.0 M solution is 1.667 L
pls help me!!!!
A.Ants and tarantulas
B.Rats and Snakes
C.Cacti and Sagebrush
D.Hawks and Coyotes
Answer:
C since both are plants which are the producers
Answer:
Cacti and Sage Brush
Explanation:
because they are plants so they produce food on their own
What can you infer is causing the cryosphere to change? Give two reasons. Explain why.
Answer:The crayosphere- it is the portion of the Earth's surface where water is in solid form for at least one month of the year..-has been shrinking in response to climate warming.The important outcome,however,is the change and the response the human social system (infrastructure,food ,water,recreation) will be have to that change...
I hope It helps
Answer:
50
Explanation:
mookie betts 50 is goated no cap
Describe two patterns in the periodic table?
Answer:
Patter 1: Ionization Energy Decreases going down a group
Pattern 2: Ions tend to gain/lose the least amount of electrons
Take oxygen, for example. Oxygen has 8 electrons. To become like a noble gas it could either gain two to become like neon or it could lose six to become like helium. So what will oxygen do—gain two or lose six? As a general rule, atoms will gain or lose the fewest number of electrons possible.
Explanation:
Where does nearly all life get its energy from? *
Oxygen
A.Sun
B.Produce
C.Soil
I am the life cycle that contains tiny undeveloped plants,
but I still have enough food for growth. Who am I?
Please help PLEASE
In a sealed container at constant pressure, the volume is 25L. When cooled down to 100K the volume decreases to 6.25L. What was the original temperature of the container? *
A. 50k
B. 100k
C.250k
D.400k
Using the same sample of gas (P = 475 torr , T = 21 °C ), we wish to change the pressure
to 4750 torr with no accompanying change in volume or amount of gas. What temperature T2 in
Celsius, is needed to reach this pressure?
Answer:
210°C
Explanation:
using the equation
P1/T1=P2/T2
475/21=4750/T2
T2= (21×4750)/475
T= 210°C
What two things will you consistently do to maintain your mental health?
Answer:
Eat healthy food and exercise daily also undertake good healthcare
There are some special exercises that help to increase brain strength you can do them
Which element has 5 energy levels and 2 valence electrons?
Answer:
Element 38: Strontium
Explanation:
define the term valency
Answer:
Valency is the combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with
When two clear substance combines, an insoluble solid is formed that settle downs as a
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When two clear substance combines, an insoluble solid is formed that settle downs as a ________.
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When two clear substance combines, an insoluble solid is formed that settle downs as a precipitate.
→A precipitate is a substance to be deposited in solid form from a solution.
______________________________________
A tall plant (Tt) is crossed with a short plant (tt). What is the phenotype of the offspring?
Group of answer choices
100%
75% tall; 25% short
25% tall; 75% short
50% tall, 50% short
which sphere includes all the plants and animals on earth?? A. Lithosphere B.Type of soil C.Biosphere D.Asthenosphere
Answer:
Biosphere
Explanation:
It is B i think