Potassium and bromine combine to make KBr. What is the name of this compound?
potassium bromine
potassium bromide
bromine potassium
bromine potassiumide
Answers
Related Questions
How many atoms of hydrogen are involved in this reaction?
CH4 + 202 → CO2 + 2H2O
Answers
Liquids with many free hydroxide ions (OH-) are called _________.
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Answer:
hypothesis testing center of the year with 32 days
What are some ways the stars in the photo could be grouped or classified
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2 moles of NO, was placed in an empty I dm' bottle and allowed to reach equilibrium according to the equation:
At equilibrium, 1.2 moles of N,O, dissociated. Calculate the value of the equilibrium constant for the reaction at that
temperature.
Answers
2NO(g) ⇌ N2(g) + O2(g)
According to the problem statement, 2 moles of NO were placed in a 1 dm^3 bottle and allowed to reach equilibrium, and at equilibrium, 1.2 moles of NO had dissociated. This means that the initial concentration of NO was:
[NO]initial = 2 mol / 1 dm^3 = 2 M
And the concentration of NO at equilibrium is:
[NO]equilibrium = (2 - 1.2) mol / 1 dm^3 = 0.8 M
Since the stoichiometry of the balanced equation is 2:1:1 for NO, N2, and O2, respectively, the equilibrium concentrations of N2 and O2 will also be 0.6 M.
The equilibrium constant (Kc) can be calculated using the equilibrium concentrations of the reactants and products, raised to the power of their stoichiometric coefficients. Therefore:
Kc = ([N2][O2]) / ([NO]^2)
Substituting the equilibrium concentrations into the equation, we get:
Kc = (0.6 M x 0.6 M) / (0.8 M x 0.8 M)
Kc = 0.5625
Therefore, the value of the equilibrium constant for the reaction at that temperature is 0.5625. Note that the units of Kc depend on the stoichiometry of the balanced equation. Since the stoichiometric coefficients are all 1, the units of Kc in this case are M^-1
What nineteenth-century english scientist offered proof that atoms existed?
Answers
Our current understanding of the atom is based on Dalton's early 19th-century idea of atomism, which was developed from meteorological investigations. John Dalton was just a meteorologist, an expert on color blindness, and a teacher, but he will be most widely recognized for creating the idea of atomism.
What is called scientist?A scientist is someone who meticulously gathers data and uses it to develop theories, test those hypotheses, and further knowledge and understanding. Despite the fact that the name "scientist" predates Aristotle by more than two millennia, he is frequently referred to as the first scientist. He invented the methods of reasoning, observation, inquiry, and demonstration in Greece in the fourth century BC.
Why are scientists important?Because they provide specialized explanations for how the world functions, scientists play a crucial role in society. Science is a powerful tool for survival, despite the fact that it doesn't always provide us with joy, and humans have spent considerable time starting to figure out how to do both.
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Bobby has a toy car that is sitting at rest on the floor. He decides to play with his toy car and pushes it with 3 newtons to the right. Bobby's friend Sam also decides to play with the toy car and pushes it with 6 newtons to the left at the exact same time. Which of the following best describes the resulting motion of the toy car? A It travels to the right at an increasing speed. B It travels to the right at a constant speed. C It travels to the left at an increasing speed. D It travels to the left at a constant speed.
Answers
Answer: D
Explanation:
The car will move to the left because Sam is implying a grater force (3 N < 6 N) but it is traveling at a constant speed because there is still a force being acted upon it. <3
The result of applying forces to a toy car is required.
Option D is correct.
Force applied by Bobby is 3 N to the right
Force applied by Sam is 6 N to the left
Right is taken as positive and left is taken as negative.
m = Mass of toy
a = Acceleration
Net force applied to the toy
\(F=3-6\\\Rightarrow F=-3\ \text{N}\\\Rightarrow ma=-3\\\Rightarrow a=\dfrac{-3}{m}\)
So, the toy will move left with a constant acceleration.
Constant acceleration means its speed will be increasing.
So, option D is correct.
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DISCUSSION QUESTIONS:
1) Distinguish how P-waves and S-waves travel differently with illustrations and
labels.
2) What type of seismic wave will reach a recording station 500 miles away from the epicenter first
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Answer:
P-waves compression waves while S-waves are shear waves.
Explanation:
P- waves has the ability to travels through solid, liquid and gaseous medium while S-waves travels through only solid medium and restricted by liquid and gaseous medium. P-waves is a type of seismic wave that will reach first to the recording station as compared to S-waves because P-waves moves faster that S-waves that moves slower so that's why P-waves reach first on the recording station that is located 500 miles away.
hlight
How are rocks weathered as in this example seen here?
ame
aining
22:01
Tools
A)
The rocks change their composition.
B)
The rocks are being chemically weathered by the water.
Freezing and thawing of water breaks the rocks into pieces.
D)
Hot lava is pushing on the rock and breaking it into pieces.
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Answer:
B). The rocks are being chemically weathered by the water.
Explanation:
Because the water is slowly destroying the rock
.00278kg • ____= ____mg
Answers
Answer:
blank space one- 0
blank space two- 0
Explanation:
Reading Check
Check your understanding by answering the question below.
In(BLANK)
a general idea is used to draw specific conclusions.
Answers
Drawing conclusions is the process of making sense of information that has been hinted at or implied. As a result, the information is seldom given in an obvious way.
What does "draw a conclusion" mean?To arrive at trustworthy findings, careful evidence collecting, analysis, and judgements that can withstand scrutiny are required. As an author, you are presenting your findings for readers to assess, thus you must be compelling based on the information you present in your piece.
Posing a sound question, formulating a working hypothesis, conducting research, identifying and controlling factors, recording observations during testing, gathering data, and drawing conclusions are all necessary steps. If you use spec sheets, diagrams, and graphs, your results are simpler to organise and present.
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An iron foil of thickness 17μm is used in a Rutherford experiment to scatter α particles with energy 11MeV. (a) Determine the impact parameter for a scattering angle of 95∘ . (b) What fraction of the particles will be scattered at angles greater than 95∘ ? (c) Compute the approximate radius of an iron atom.
Answers
Answer: Approximate radius of an iron atom ≈ 5.77 × 10^-15m or 0.0577 nm
(a) Impact parameter refers to the perpendicular distance between the path of an incident particle and the center of the target.
Let’s compute the impact parameter using the formula below:
b = cot(θ/2) * (R1 + R2),
where θ = scattering
angle = 95°,
R1 = radius of incident particle,
R2 = radius of target particle
R1 = r, radius of alpha particle
R2 = R, radius of iron atom
R = 1.2 × 10^-10mb = cot(θ/2) * (R1 + R2)
b = cot(95°/2) * (1.2 × 10^-10m + 8.5 × 10^-15m)
b = 3.556 × 10^-15m ≈ 4 μm
Answer: Impact parameter = 4 μm
(b) Scattering occurs when the impact parameter is less than the distance of closest approach (DCA).
Therefore, we need to compute DCA using the formula below:
DCA = 2R(R1 + R2) / (R + R1)sin²(θ/2)
DCA = 2(1.2 × 10^-10m)(17 × 10^-6m + 1.2 × 10^-10m) / (8.5 × 10^-15m + 1.2 × 10^-10m)sin²(95°/2)
DCA = 3.28 × 10^-13m
To determine the fraction of particles scattered at angles greater than 95°,
we need to compute the area of the ring centered at the point of closest approach, but outside of the minimum scattering angle.
The area of this ring is πb² (1 - cos(θ/2)).
Also, the total area of scattering is πDCA² / 4.
Therefore, the fraction of particles scattered at angles greater than 95° is:Fraction = πb² (1 - cos(θ/2)) / πDCA² / 4
Fraction = (4b² / DCA²) (1 - cos(θ/2))
Fraction = (4(4 × 10^-12m²) / (3.28 × 10^-13m)²) (1 - cos(95°/2)) ≈ 0.038
Answer: Fraction of particles scattered at angles greater than 95° ≈ 0.038
(c) To compute the approximate radius of an iron atom, we need to use the formula for the radius of the nucleus of an atom. The Rutherford scattering formula, which is based on Coulomb's law, was used to determine the size of the nucleus of the atom.
Rutherford's formula states that the radius of the nucleus is R = R0A¹/³,
where
A is the mass number of the nucleus,
R0 is the radius of the nucleus of hydrogen (which is about 1.2 × 10^-15m), and
R is the radius of the nucleus of the atom.
Therefore, we need to determine the mass number of iron. The mass number of an atom is equal to the number of protons (atomic number) plus the number of neutrons. The atomic number of iron is 26, and the atomic mass is 56. Thus, the mass number is 56.
R = R0A¹/³R = (1.2 × 10^-15m)(56)¹/³ ≈ 5.77 × 10^-15m
Answer: Approximate radius of an iron atom ≈ 5.77 × 10^-15m or 0.0577 nm
Rank the following in order of increasing bond angles: OF2, SnF2, XeF2
(1) OF2 < XeF2 < SnF2
(2) OF2 < SnF2 < XeF2
(3) SnF2 < OF2 < XeF2
(4) XeF2 < OF2 < SnF2
(5) XeF2 < SnF2 < OF2
Answers
The bond angles in a molecule depend on the repulsion between the electrons in the valence shell of the central atom thus, the correct order of increasing bond angles is (2) OF\(^{2}\) < SnF\(^{2}\) < XeF\(^{2}\).
In the case of OF\(^{2}\), the central atom is oxygen, which has two lone pairs of electrons and two fluorine atoms as bonded atoms. The lone pairs exert greater repulsion than bonded atoms, leading to a bent shape and a bond angle of approximately 103 degrees. Moving on to SnF\(^{2}\), the central atom is tin, which has two bonded fluorine atoms and two lone pairs.
The lone pairs again exert greater repulsion, leading to a bent shape and a bond angle of approximately 101 degrees. Finally, XeF\(^{2}\) has a central atom of xenon, which has three lone pairs and two bonded fluorine atoms. The greater number of lone pairs leads to a linear shape and a bond angle of 180 degrees. Therefore, the correct order of increasing bond angles is (2) OF\(^{2}\) < SnF\(^{2}\) < XeF\(^{2}\).
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How does ionic and covalent compounds use electrons?
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Answer:
In ionic bonding, atoms transfer electrons to each other. Ionic bonds require at least one electron donor and one electron acceptor. In contrast, atoms with the same electronegativity share electrons in covalent bonds, because neither atom preferentially attracts or repels the shared electrons.
They share electrons between them
What is a volume. in your own words but be more detailed about what you say.
Answers
Answer:
volume is the amount of space in a certain object
What best describes what models are used for?
A. Models are used as substitutes for compounds.
B. Models are used to explain how something works.
C. Models are used to perform experiments.
D. Models are used to develop new technologies.
Answers
Explanation:
is b or c but i think asnwer is b
The correct statement is " Models are used to explain how something works."
What is model?To introduce specific content, models might be employed. A model can help students learn crucial words and create a setting in which they can investigate pertinent processes.
Models can be used to improve explanations, promote discussion, make predictions, present graphical images of abstract concepts, and generate mental models in research.
Therefore, Models are used to explain how something works .
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how many grams of iron are needed to react to 10 moles of oxygen
Answers
4Fe + 3O2 -> 2Fe2O3
From the equation, we can see that 4 moles of iron react with 3 moles of oxygen to produce 2 moles of iron oxide.
To find the amount of iron needed to react with 10 moles of oxygen, we can use a proportion:
4 moles of iron / 3 moles of oxygen = x moles of iron / 10 moles of oxygen
Solving for x, we get:
x = (4/3) * 10 = 13.33 moles of iron
Finally, we can convert moles of iron to grams of iron using the molar mass of iron, which is 55.85 g/mol:
13.33 moles of iron * 55.85 g/mol = 745.15 grams of iron
Therefore, 745.15 grams of iron are needed to react with 10 moles of oxygen.
NEED HELP!!!
How many moles of magnesium is 3.01 x 1022 atoms of calcium?
preferably a step by step answer....thank u<3
Answers
Answer:
0.03 mol
Explanation:
The equation relating the number of moles and number of atoms is:
Number of atoms = number of moles × 6.02 × 10²³
[6.02 × 10²³ is the Avogadro's constant and is the number of particles in 1 mole of any substance.]
By rearranging the equation, we can find the number of moles of calcium.
Number of moles = (3.01 × 10²²) ÷ (6.02 × 10²³)
Number of moles = 0.05 moles of calcium
Now the only data we know about these two elements are their Mr values, so we are going to find the number of moles of magnesium using ratio.
Moles : Mr
0.05 mol : 40.1
x : 24.3
[we are going to assume that x is the number of moles of magnesium that we have to find out.]
Cross multiply the ratios.
40.1x = 0.05 × 24.3
x = 1.215 ÷ 40.1 = 0.03 mol
Complete the statements by writing the number
from the graph.
Temperature vs. Time
The substance is in the gas phase only in region
The substance is in both the liquid and the solid
phase in region
Temperature (°C)
3
400
360
320
280
240
200
160
120
80
40
0
-40
The substance is in only the liquid phase in region
The melting point is the temperature at region
2
The boiling point is the temperature at region
-80
DONE
Time (min) →
Intro
Answers
Answer:
A) The substance is in the gas phase only in "region 5".
B) The substance is in both the liquid and solid phase in "region 2"
C) The substance is only in the liquid phase in "region 3".
D) The melting point is the temperature at "region 2".
E) The boiling point is the temperature at "region 4".
Explanation:
The graph is a graph of the solid, liquid, vapour phase change diagram.
In phase 1, the substance is ice which is the solid phase.
In phase 2,it undergoes melting in a forward reaction.
In phase 3, the melting from phase 2 has now changed to water which is liquid phase.
In phase 4, the substance is undergoing a forward reaction known as evaporation.
In phase 5, the evaporation from stage 4 will turn the liquid into vapour known as the gas phase.
A) The substance is in the gas phase only in "region 5".
B) The substance is in both the liquid and solid phase in "region 2"
C) The substance is only in the liquid phase in "region 3".
D) The melting point is the temperature at "region 2".
E) The boiling point is the temperature at "region 4".
The change of state of a substance occurs when heat is either added or removed from the substance.
What is change of state?Change of state is a process in which a substance changes from one state of matter to another due to heat changes.
From the graph given:
The substance is in only the liquid phase in region 3.The subsybece is both in the liquid and solid phase at region 2.The melting point is the temperature at region 2The boiling point is the temperature at region 4The substance is in the gas phase only at region 5.Learn more about change of state at: https://brainly.com/question/9007095
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Give the numerical value of n corresponding to 5d. n = ...
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In atomic orbitals, n and l represent the principal quantum number and the azimuthal quantum number, respectively.
These values are important for understanding an electron's energy level and its subshell within an atom.
A. 3p: For a 3p orbital, n = 3, indicating the electron is in the third energy level. The letter "p" corresponds to l = 1, which represents a p subshell.
B. 2s: In a 2s orbital, n = 2, meaning the electron resides in the second energy level. The letter "s" corresponds to l = 0, denoting an s subshell.
C. 4f: For a 4f orbital, n = 4, signifying the electron is in the fourth energy level. The letter "f" corresponds to l = 3, representing an f subshell.
D. 5d: In a 5d orbital, n = 5, indicating the electron is situated in the fifth energy level. The letter "d" corresponds to l = 2, denoting a d subshell.
These numerical values help describe the electron's position and energy within an atom, aiding in understanding atomic structure and behavior.
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The full question is:
Determine the numerical values of n and l corresponding to each of the following designations:
A. 3p
B. 2s
C. 4f
D. 5d
what's condensation? is it a warming or cooling effect?
Answers
Condensation is the warming process. Heat energy is released by the gas when it condenses into a liquid.
Condensation is the change of the state of matter from the gas phase into the liquid phase, and is the reverse of vaporization. It can also be defined as the change in the state of water vapor to liquid water when in contact with a liquid or solid surface or cloud condensation nuclei within the atmosphere.
I really do hope this helps and i hope you have a wonderful weekend
~hailey lee
Answer:
Condensation is a warming process that occurs when air condenses into liquid and releases heat energy.
For example: water vapour from a cold drink.
Also as it releases heat energy, its an exothermic reaction.
What was the first animal on the endangered species list?
bald eagle
Great white shark
Saber tooth tiger
humpback whale
Answers
Answer:
Saber tooth tiger
Explanation:
Saber tooth tiger is pretty dangerous and around the world are few meaning were killed
Show work: Convert 4.21g of K3PO4to atoms
Answers
identify the compounds that can be deprotonated by −oh (pka of water = 15.7).
Answers
The hydroxide ion (−OH) is a strong base and can deprotonate compounds that have an acidic hydrogen atom.
When the −OH ion reacts with an acidic compound, it accepts a proton (H+) to form a water molecule, thereby neutralizing the acidic compound. The pKa value of water is 15.7, which means that compounds with a pKa value below 15.7 can be deprotonated by −OH.
Some examples of compounds that can be deprotonated by −OH include:
Carboxylic acids: These compounds have a carboxyl group (-COOH) that can be deprotonated by −OH to form a carboxylate ion (-COO−). Examples include acetic acid (pKa = 4.75) and benzoic acid (pKa = 4.2).
Phenols: These compounds have a hydroxyl group (-OH) attached to an aromatic ring that can be deprotonated by −OH to form a phenoxide ion (-O−). Examples include phenol (pKa = 9.95) and 4-nitrophenol (pKa = 7.15).
Amides: These compounds have a nitrogen atom attached to a carbonyl group (-CONH2) that can be deprotonated by −OH to form an amide anion (-CONH−). Examples include acetamide (pKa = 16.5) and formamide (pKa = 15.5).
Overall, any compound that has an acidic hydrogen atom with a pKa value below 15.7 can be deprotonated by −OH, resulting in the formation of a conjugate base and water.
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How many moles of KC1 are in 1250 mL of 0.75 M KC1
Answers
The following formula can be used to determine how many moles of KC1 are present in 1250 mL of 0.75 M KC1: Molarity (M) is equal to the moles of solute per litre of solution.
In this instance, the volume of the solution is 1250 mL, and the molarity of KC1 is 0.75 M. The following formula can be used to determine how many moles of KC1 are present in 1250 mL of 0.75 M KC1: Molarity (M) times the number of litres in the solution equals 0.75 M times (1250 mL/1000 mL/L) or 0.9375 moles of KC1.
Consequently, 0.9375 moles of KC1 are present in 1250 mL of 0.75 M KC1. It is significant to remember that a solution's molarity is a measurement of the amount of a solute present in a given volume of the solution.
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If the temperature outside is 297 what is this temperature in degrees celsius
Answers
Answer:
147.222 degrees C
Explanation:
assuming its 297 F it should be correct
The temperature outside is 297°F then this temperature in celsius is equal to 147.22 °C.
How to convert from Fahrenheit to celsius?Temperature can be described as a physical quantity that expresses quantitatively the perceptions of hotness or coldness. The most general scales are the Celsius scale with (°C), the Fahrenheit scale (°F), and the Kelvin scale (K), the latter being used predominantly for scientific purposes.
Fahrenheit to Celsius formula can be used to change the temperature from the scale Fahrenheit to degrees Celsius.
The formula that can be used to convert Fahrenheit to Celsius is given below:
\(\dusplaystyle ^oC = (^oF - 32) \times \frac{5}{9}\)
Here, F represents the temperature in Fahrenheit, and C represents the temperature in Celsius.
Given the temperature in Fahrenheit = 297 °F
\(\dusplaystyle T( ^oC) = (297 - 32) \times \frac{5}{9}\)
T = 147.22 °C
Therefore, the given temperature in celsius is equal to 147.22 °C.
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Name of compound 6T ?
Answers
Answer:
Explanation:
I serched for it i found name is :sexithiophene
As the temperature of a gas decreases, what change occurs in the amount of kinetic energy? The kinetic energy
Answers
Answer:
When the average kinetic energy of the molecules goes up (a rise in temperature), the average speed of the molecules increases. And lower average kinetic energy of the molecules means they have lower speed. When heat (energy) goes into a substance one of two things can happen:
Explanation:
If the temperature is increased, the average speed and kinetic energy of the gas molecules increase. ... If the gas volume is decreased, the container wall area decreases and the molecule-wall collision frequency increases, both of which increase the pressure exerted by the gas (Figure 1). Avogadro's law.
As the temperature of a gas decreases, the amount of kinetic energy also decreases .
How does decrease in temperature affect the amount of kinetic energy?If the temperature is increased, the average speed and kinetic energy of the gas molecules increase.
If the temperature of gas volume is decreased, the container wall area decreases and the molecule-wall collision frequency increases.
The temperature of a gas decreases and hence , results in the amount of kinetic energy also decreases .
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When computers were first invented, their memory was measured in sheets of paper that could be coded. The new Playstation 5 has a storage of 825 Gb. How many sheets of paper would it take to fill the new Playstation 5?
Answers
Answer:
The number of cards required to fill an 825 GB PlayStation is 6.875 × 10⁹ sheets of paper or 6875000000 sheets of paper
Explanation:
The coded sheets of paper are known as punched cards. Punched cards are paper cards where holes may be punched by hand or machine to represent computer data and instructions. Each hole in a card represents one bit: It either can be punched, or not punched. The holes in a classic card are arranged in 80 columns and 12 rows. The maximum information that can be stored in the punched card = 80 x 12 = 960 bits.
8 bits = 1 byte
960 bits = 120 bytes
1 gigabyte = 10⁹ bytes
Therefore, the number of cards required to fill an 825 GB PlayStation is;
(825/120) × 10⁹ = 6.875 × 10⁹ sheets of paper or 6875000000 sheets of paper
Methane Gas (CH4) is an example of a(n) __________. *
Answers
it’s a fuel and a major energy source
4.23 x 10^23 molecules of Fe is how many liters of Fe?
Answers
Answer: 15.7 L Fe
Explanation:
\((\frac{4.23*10^{23} molecules Fe }{1} )*(\frac{22.4L Fe}{6.023*10^{23}molecules Fe } )= 15.7 L Fe\)
Basic mole conversion
The volume of 4.23 × 10²³ molecules of Fe is equal to 15.734 L.
What is Avogadro's number?Avogadro’s number can be represented as the number of entities in one mole of any substance. Generally, these entities can be molecules, electrons, protons, atoms, or ions, depending upon the chemical reaction or reactant and product.
The value of Avogadro’s number is approximately equal to 6.022× 10²³ mol⁻¹. We know that at STP the volume of any gas or substance is equal to 22.4 liters.
Given, the number of molecules of the Fe = 4.23 × 10²³
The volume of the one mole of Fe = 22.4 L
So 6.022 × 10²³ molecules of Fe have mass = 22.4 L
Then 4.23 × 10²³ Fe molecules will have the volume:
= 4.23 × 10²³ ×22.4/6.022× 10²³
= 15.734 L
Therefore, the volume of 4.23 × 10²³ molecules of Fe is 15.734 liters.
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