Answer:
Hydrogen and Chlorine
ie HCL
The pairs of chemical elements that will combine to produce a covalent bond is: 1. Hydrogen and chlorine.
In Chemistry, the three (3) main types of chemical bonds include:
Ionic bonds: Lithium and bromineHydrogen bonds: Hydrogen and oxygen.Covalent bonds: Hydrogen and chlorine.A covalent bond can be defined as a type of bond that typically involves the sharing of electrons between the atoms of a chemical element.
For example, the type of bond that is produced (formed) between hydrogen atoms and a chlorine atom is a covalent bond.
The hydrogen atom shares it single electron with a chlorine atom that is having seven (7) valence electrons to produce an inert gas such as hydrochloric acid (HCL).
In conclusion, the pairs of chemical elements that will combine to produce a covalent bond is hydrogen and chlorine.
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Pls 50 points right answer gets brainliest
Explain the meaning of thermal energy transfer and give specific examples of conduction, convection, and radiation.
Answer:
thermal energy: the part of total internal energy that can be transferred (a portion of the kinetic energy)
heat is the thermal energy that flows from one substance to another due to a temperature difference.
Thermal energy is measured in temperature change.
Thermal energy transfer stops when thermal equilibrium is achieved (Both substances at the same temperature).
conduction: Transfer of thermal energy through a solid object like heat transferring up a metal spoon from a hot cup of coffee.
convection: the transfer of thermal energy due to the movement of a liquid or gas caused by differences in temperature. Only in a fluid (liquid or gas). Breezes, ocean currents.
radiation: Transfer energy with or without matter. Warming from the Sun, microwave oven.
Answer:
Conduction is the transfer of thermal energy through direct contact. Convection is the transfer of thermal energy through the movement of a liquid or gas. Radiation is the transfer of thermal energy through thermal emission. Hope this helps!
Explanation:
A 500-gram block of solid cheese is melted in a pot. Which is most likely be the mass of the cheese after it is melted?
pleaseeeeeeeeee answer
Answer:
due to the law of conservation of mass, the mass would stay the same.
How does the human body build the complex
molecules it needs?
Dehydration synthesis reactions build molecules up and generally require energy, while hydrolysis reactions break molecules down and generally release energy. Carbohydrates, proteins, and nucleic acids are built up and broken down via these types of reactions, although the monomers involved are different in each case
Answer:
Dehydration synthesis reactions build molecules up and generally require energy, while hydrolysis reactions break molecules down and generally release energy. Carbohydrates, proteins, and nucleic acids are built up and broken down via these types of reactions, although the monomers involved are different in each case.
Explanation:
Someone help please! Extra points & brainlest!
Answer:
golgi apparatus
Explanation:
Answer:
vacuole
Explanation:
the answer is vacuole im pretty sure!
hydrogen + copper(II) oxide= copper + steam, which substance is oxidized. explain your answers
Can someone plz help me with this one problem plz!!!
Answer:
I think it is C
Explanation:
I just do.
Please Help I need to finish this by the end of the day!
Answer:
C
Explanation:
If I am not mistaken, due to the conservation of mass, whatever mass is on the side of the reactants should be the same for the product side.
This means
218.76g+53.96g = 272.72g
272.72g-266.66g = 6.06g
So the answer should be C
1 mole of any gas is equivalent to?
Answer:
22.4 L at standard temperature and pressure.
Briefly describe each of the suns layers. I’ll give brainless
Answer: The inner layers are the Core, Radiative Zone and Convection Zone.
The outer layers are the Photosphere, the Chromosphere, the Transition Region and the Corona.
Nuclear fusion of hydrogen in the core of the Sun produces tremendous amounts of energy that radiate out from the Sun.
The corona is the outermost layer of the Sun, starting at about 1300 miles (2100 km) above the solar surface (the photosphere). The temperature in the corona is 500,000 K (900,000 degrees F, 500,000 degrees C) or more.
The chromosphere is a layer in the Sun between about 250 miles (400 km) and 1300 miles (2100 km) above the solar surface (the photosphere). The temperature in the chromosphere varies between about 4000 K at the bottom (the so-called temperature minimum) and 8000 K at the top (6700 and 14,000 degrees F, 3700 and 7700 degrees C), so in this layer (and higher layers) it actually gets hotter if you go further away from the Sun, unlike in the lower layers, where it gets hotter if you go closer to the center of the Sun.
The photosphere is the deepest layer of the Sun that we can observe directly. It reaches from the surface visible at the center of the solar disk to about 250 miles (400 km) above that. The temperature in the photosphere varies between about 6500 K at the bottom and 4000 K at the top (11,000 and 6700 degrees F, 6200 and 3700 degrees C)
(phew! There you go!)
before you retire in the evening, you sit down for a snack of milk and cookies. when you waken in the morning, you discover a carton of sour milk on the counter. knowing that milk sours if left in the refrigerator too long, has the reaction rate increased or decreased for the carton of milk on the counter? what has happened to its reaction time
Answer:
Increased
Explanation:
We know that the higher the temperature the higher the rate of reaction. This implies that as the temperature is increased, a reaction tends to proceed faster.
This follows from the collision theory, the higher the temperature, the higher the energy of the reacting particles hence they collide with each other faster and more effectively.
Thus the rate of reaction( or reaction time) for the carton of milk on the counter was increased.
the action force
According to Newton's third law of motion, a reaction force between two objects is
but in the opposite direction.
equal to
greater than
less than
Answer:
equal to - it's opposite but equal energy is the third law
Radioactive decay occurs when the ____ decays
Answer:
nucleus i think
Explanation:
Can i titrate a solution of unknown concentration with another solution of unknown concentration and still get a meaningful answer
Answer:
No, I don't think so at least
Explanation:
In chemistry, you do calculations to find the concentration of a solution with another solution of KNOWN concentration. Without concentrations of either solution, were would you get values from? Where would you start? :3
You can not titrate a solution of unknown concentration with another solution of unknown concentration and still get a meaningful answer.
Titration involves the standardization of unknown solution using a standard solution. By this definition, titration must involve a standard solution.
Since the two unknown solutions are not standardized, we can never get a meaningful answer because we can not be able to perform any calculation unless we have a standard solution.
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Select the compound that is soluble in water?
Answer:
NaOH
Explanation:
NaOH is among the water soluble bases
When naming an acid, which of the following is true?
chlorite changes to chloric acid
chlorate changes to chloric acid
none of these is true
chlorate changes to chlorous acid
Answer:
chlorate changes to chlorous acid
Why is the distance traveled between seconds 0 and 1 less than the distance traveled between 2 and 3 sceonds
Answer:
The ball speeds up
Explanation:
For the balanced equation shown below, how many moles of H2O will react with 9 moles of N2?
N2 + 4H2O --> 2H2O2 + N2H4
Answer:
36 mole of H20
Explanation:
N2 + 4H2O --> 2H2O2 + N2H4
H20 : N2
4 : 1
x : 9
cross multiplication
so,
= 9x4/1 = 36 mole of H20
I hope this helps a little bit.
Which element would be the most suitable to make a spoon that will melt in
your hot drinks?
A) aluminium
melting point: 660°C
boiling point: 2470°C
B) argon
melting point: -189°C
boiling point:-186°C
C) bromine
melting point: -7°C
boiling point: 59°C
D) gallium
melting point: 30°C
boiling point: 2400°C
E) lithium
melting point: 180°C
boiling point: 1330°C
F)mercury
melting point: -39°C
boiling point:357°C
Answer:
it's A) or E)
others are not suitable cuz their melting point is weak.
Answer:
Gallium
Explanation:
Because the melting point is low and the drinks are usually around 60-70 degrees Celsius so it wil melt
I need help with the question below:
[tex]PCl_5 = PCl_3+Cl_2 \\ [/tex]
Where PCl5 and PCl3 are gasses
In the above equation , Predict the effect of change in :
I. Temperature
ii. Pressure
iii. Removal of Chlorine
Answer:
1: As the temperature rises, the equilibrium moves towards the products
2: The higher the pressure, the higher the equilibrium goes to the reactants
3: By removing chlorine, the equilibrium moves towards the products
type a question about gas starting with “what if”
Answer:
what if we didn't have gas
Explanation:
briskly meaning
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to all who liked my answers
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Answer:
You need follower?
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I can't see who I am following it does itself
In a closed system for the reaction: A (g) + 2B (g) → AB₂ (g) The rate of the reaction increases when there is
A) an increase in pressure
B) an increase in the reaction vessel
C) a decrease in the concentration of A
D) an increase in surface area of A
Answer: D
Explanation: an increase in surface area of A
(-15)+(-12)+14
how do u simplify
Answer:
-15-12-14=-13
Explanation:
we simplify by opening the bracket
Which feature separates watershed
Answer:
Ridges.
Explanation:
Watersheds are separated from one another by ridges. Ridges are elevated boundaries that divide watersheds.
What does it mean to be limiting or excess? (Limiting Reactant)
Answer:
Find the limiting reagent by calculating and comparing the amount of product each reactant will produce. Balance the chemical equation for the chemical reaction. The reactant that produces a lesser amount of product is the limiting reagent. The reactant that produces a larger amount of product is the excess reagent.
Explanation:
How many grams of 5% barium hydroxide solution will be needed to react 2 moles of sulfur (IV) oxide?
Answer:
DONT PRESS THAT LINK IT IS VIRUS AND HACK
Explanation:
Give the noble gas configuration of vanadium (V), atomic number 23
The noble gas configuration of vanadium (V), atomic number 23 will be [Ar] 3d34s2.
What is noble gas configuration ?The electron configuration of noble gases would be known as that of the noble gas configuration. The propensity of chemical elements to gain stability forms the foundation of all chemical reactions. Chemical formation frequently leads to an entire electronic configuration approximating a noble gas for several main group elements.
The atomic number of V = 23
The noble gas configuration = [Ar] [tex]3d^{3} 4s^{2}[/tex].
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Answer:
[Ar] 3d3 4s2
Explanation:
[Ar] 3d3 4s2
Consider this reaction: NH4+ + HPO42− → NH3 + H2PO4−
Which is the conjugate base?
NH4+
NH3
HPO42–
H2PO4–
The conjugate base is formed when an acid loses its hydrogen or proton. In the reaction between ammonium ion and hydrogen phosphate, HPO₄²⁻ is the conjugate base. Thus, option C is correct.
What is a conjugate base?Conjugate bases are formed when the substance accepts or absorbs the proton or the hydrogen ion from the acids in the solution. It can be said as a base with an added hydrogen ion to it.
The chemical reaction of the acids and the bases has been shown as,
NH₄⁺ + HPO₄²⁻ → NH₃⁺ + H₂PO₄⁻
From the reaction, it can be said that ammonia donated its proton, whereas HPO₄²⁻ accepted hydrogen ions from the acid.
Therefore, HPO₄²⁻ has been the conjugate base in the given chemical reaction.
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In dry climates, people often dig wells to find additional sources of water
to raise crops or feed livestock. Which of the following could be
significant negative effect on the environment cause by obtaining water
from the well?
Select one:
A: The digging will create air pockets in the soil.
B: Using the well could erode the soil and increased the risk for mountain
landslides.
C: Crushed rock and layers of soil might pile up where the well is dug
D: Using the well could lower the water table throughout the area.
Answer:
D i think, sorry if its wrong
Explanation:
Answer:
Using the well could lower the water table throughout the area.
Explanation:
i just took a test and this was the answer
Which of the following is an example of kinetic energy?
Answer: A river flowing at a certain speed
Explanation: as water has certain velocity and mass.