please help me!! thank you so much!!​

Answer:

6

Explanation:

bromine has 1, hydrogen has 4 and nitrogen has 1 therefore equaling 6

The number of atoms in NH₄Br is six.

An atom is a particle of matter that uniquely defines a chemical element. An atom consists of a central nucleus that is surrounded by one or more negatively charged electrons. The nucleus is positively charged and contains one or more relatively heavy particles known as protons and neutrons.

Atoms are the basic building blocks of matter. Anything that takes up space and anything with mass is made up of atoms.

In the given formula, there is one N atom, four H atoms and one Br atom making a total of six atoms.

Therefore, the number of atoms in NH₄Br is six.

Learn more about Atoms, here:

https://brainly.com/question/30898688

#SPJ2

Atoms of the outermost electrons should have rather low ionization energies.

The ionization energy is a measure of the capability of an element to enter into chemical reactions requiring ion formation or donation of electrons. it is also typically related to the character of the chemical bonding inside the compounds formed via the elements. See also binding energy; electron affinity.

The power to remove electrons from an isolated gaseous atom is known as ionization energy(IE) or ionization potential.

Correct order of IE is: s1<p1<s2<p2<p4<p3<p5<p6

From the above options, the lowest IE is of s1.

Learn more about ionization energies here: https://brainly.com/question/1445179

#SPJ4

The concentration of HClO2 at equilibrium, starting with an initial concentration of 2.25×10−2 M, is 1.95×10−4 M.

Chemical equilibrium is a dynamic state in which the rates of forward and reverse reactions are equal. In this case, we are dealing with the dissociation of the weak acid HClO2, which can be represented by the following equilibrium equation:

HClO2 ⇌ H+ + ClO2-

The initial concentration of HClO2 is given as 2.25×10−2 M. At equilibrium, let's assume that the concentration of HClO2 that has dissociated is x M. Therefore, the concentration of H+ and ClO2- ions formed will also be x M.

Using the stoichiometry of the balanced equation, the equilibrium concentration of HClO2 can be expressed as the initial concentration minus the concentration that has dissociated:

2.25×10−2 M - x

Since the equilibrium constant expression for this reaction is not provided, we cannot calculate x directly. However, if the equilibrium constant (K) is known, it can be used to find x and, consequently, the equilibrium concentration of HClO2. The equilibrium constant expression for the dissociation of HClO2 is:

K = [H+][ClO2-] / [HClO2]

Learn more about initial concentration

brainly.com/question/8795644

#SPJ11

In the absence of oxygen, suppose when a single yeast cell undergoes fermentation and uses 100 molecules of glucose then 200 molecules of ATP will be generated

In the absence of oxygen, the process of fermentation takes place in yeast cells. This process involves the breakdown of glucose into pyruvate and the production of energy in the form of ATP. Unlike aerobic respiration, which produces a much larger amount of ATP, fermentation only produces a small amount of ATP.

To determine the number of molecules of ATP generated in the fermentation of 100 molecules of glucose, we need to look at the specific pathway involved. In yeast cells, fermentation follows the glycolysis pathway, which results in the net production of 2 ATP molecules per glucose molecule.

Therefore, the number of ATP molecules generated from 100 molecules of glucose undergoing fermentation would be 200 ATP molecules.

It is important to note that while the production of ATP through fermentation is much less efficient than through aerobic respiration, it is still a vital process for organisms such as yeast that are unable to obtain oxygen for energy production.

In conclusion, 100 molecules of glucose undergoing fermentation in a single yeast cell would result in the generation of 200 molecules of ATP through the glycolysis pathway.

To know more about yeast refer here:

https://brainly.com/question/28213330#

#SPJ11

The shorthand electron configuration of a potassium ion (K+) is [Ar] 4s1.

Electron configuration refers to the arrangement of electrons in an atom or ion. In a neutral atom, the number of electrons is equal to the number of protons, resulting in a neutral charge. However, in an ion, the number of electrons is not equal to the number of protons, resulting in a charge.

The shorthand electron configuration uses symbols from the periodic table to represent the elements, with electron configurations being abbreviated by using the noble gas symbol (in square brackets) that precedes the element in question in the periodic table. In this case, the noble gas symbol [Ar] represents Argon, and the electron configuration of K+ is then given as [Ar] 4s1, indicating that the electron configuration of potassium has lost one electron from its 4s orbital, leaving a single electron in the 4s orbital and a positive charge on the ion.

In more detailed terms, the electron configuration of a neutral potassium atom would be [Ar] 4s1 3d10, where the [Ar] represents the electron configuration of Argon (the preceding noble gas in the periodic table), and the 4s1 and 3d10 indicate the number of electrons in the 4s and 3d orbitals, respectively. However, in the case of a potassium ion, one electron has been removed, resulting in a positive charge and the shorthand electron configuration of [Ar] 4s1.

Here you can learn more about electron configuration

https://brainly.com/question/30257751#

#SPJ11

A solute makes the freezing point of a solution lower than the freezing point of the pure solvent because The liquid phase of the solution reaches equilibrium with the solid phase at a lower temperature.

If a solute is dissolved in the liquid at the triple point, the escaping tendency or vapor pressure of the liquid solvent is lowered below that of the pure solid solvent. The temperature must drop to reestablish equilibrium between the liquid and the solid. Because of this fact, the freezing point of a solution is always lower than that of the pure solvent.

The freezing point depression of a solvent is a function only of the number of particles in the solution, and for this reason it is referred to as a colligative property. The depression of the freezing point, like the boiling point elevation, is a direct result of the lowering of the vapor pressure of the solvent.

To know more about freezing point here

https://brainly.com/question/24314907

#SPJ4

Answer:

How can you tell that one of the results has been recorded to a

The two isotopes that can be used for the process of dating are Potassium-41, Potassium-39.

The term radiometric dating has to do with the process by which the age of a rock can be discovered. We know that rocks that are around us have been around for very many years. As a matter of fact, there are some of the rocks that could be regarded as being as old as the earth could be in itself.

We have to note that one of things that could be regarded as important in the use of any isotope for dating is that isotope must have a long half life. The fact that the isotope has a long half life means that it is able to remain long enough for it to be used in the study of a substance.

We know that most of the rocks are composed of potassium as part of the components of the rock. In that case, if a dating technique would involve the potassium atom then it is likely to be a successful one as it were.

Learn more about radiometric dating:https://brainly.com/question/14799339

#SPJ1

Answer:

Explanation:ifk

The pH of the solution when KBr is dissolved in water is given by 7 as the given reaction.

Acids and bases can be measured using a pH scale. The scale has a range of 0 to 14. An indicator called Litmus paper is used to determine if a chemical is an acid or a basic. The type of chemical being tested is indicated by the colour of the paper, which corresponds to the pH scale's numbers. For instance, vinegar is an acid and has a pH of 2.4.

Doctors and scientists often concur that maintaining a good pH balance is important for your overall health. Your diet and beverage choices have an impact on your body's pH level and potential hydrogen content. The concentration of hydrogen ions is measured by pH.

KOH(aq) + HBr (aq) → KBr (aq) + H₂O

A powerful acid (H Brand) and a strong basic (KOH) react to generate the salt KBr.

The reaction between the cation K+ and the anion Br does not result in hydrolysis when the pH of the solution is 7.

Since K+ ions do not act as an acid because they are neutral cations and Br- is a neutral conjugate base of the strong acid HBr, neither H+ nor OH- ions are produced during the reaction.

Since neither of the ions react, K Bri is a neutral salt, and the solution is also neutral.

The pH of the solution, which is formed of a neutral salt, is seven (KBr).

K+ and Br ions are drawn to positively charged hydrogen and negatively charged oxygen atoms, respectively, in water solutions. The two ions do not interact in such a way that the structure of the water molecules is altered.

Learn more about pH of solution:

https://brainly.com/question/12609985

#SPJ4

Answer:

option D and option B

Explanation:

water and bromine both belongs to inorganic compund..

Wound healing is a chemical change.

A chemical change involves the formation of a new substance. A substance changes form from one form into another in the process. A physical change does not involve the formation of new substances. Wound healing involves a number of chemical changes.

A wound can also be referred to as a tissue damage. When a tissue is damaged, bleeding results. Bleeding could lead to so much loss of blood.

The human body has mechanisms in place to combat this excessive loss of blood. This occurs when a complex biochemical pathway leads to the formation of fibrinogen. The enzyme thrombin converts fibrinogen to fibrin. The formation of fibrin is very essential to the wound healing process.

We can see that a series of chemical changes are involved in the process of wound healing when your finger is cut.

https://brainly.com/question/6284546

The Ksp expression for Ag₂CrO₄ is as follows-

Ag₂CrO₄ → 2Ag+ + CrO₄⁻²

Ksp = [Ag+]²[CrO₄⁻²]

1.05 × 10⁻⁵ moles of Ag₂CrO₄ will dissolve in 1.00 L of 0.010 M K₂CrO₄ solution

Since the stoichiometric ratio of Ag₂CrO₄ to K₂CrO₄ is 1:1,  the molarity of K₂CrO₄ can be substituted as the molarity of CrO₄²⁻ ions.

Therefore [CrO₄²⁻] = 0.010 M

The volume of the solution is 1.00 L

Therefore, the number of moles of Ag₂CrO₄ that will dissolve can be calculated as follows; Ksp = [Ag+]²[CrO₄²⁻]

∴ [Ag+]² = Ksp / [CrO₄²⁻]= 1.1 × 10⁻¹² / 0.01= 1.1 × 10⁻¹⁰

∴ [Ag+] = √[1.1 × 10⁻¹⁰]= 1.05 × 10⁻⁵ M

Therefore, the moles of Ag₂CrO₄ that will dissolve in 1.00 L of 0.010 M K₂CrO₄ solution is

= 1.05 × 10⁻⁵ M × 1.00 L

= 1.05 × 10⁻⁵ moles of Ag₂CrO₄ will dissolve in 1.00 L of 0.010 M K₂CrO₄ solution

For more questions on finding the number of moles: https://brainly.com/question/9157548

#SPJ11

Answer:

1/32

Explanation:

Answer:

plants

Explanation:

they are plant cells, happy Thanksgiving :)

Answer: photosynthetic tissues

Explanation: Chloroplasts are present in the cells of all green tissues of plants and algae. Chloroplasts are also found in photosynthetic tissues that do not appear green, such as the brown blades of giant kelp or the red leaves of certain plants.

Answer: 110 g/mol

Explanation:

First we need to find the molar mass of CaCl2 using the periodic table:

Ca: 40

Cl: 35 (Since Cl has a 2 at the end, multiply 35 by 2)

70+40= 110

Then multiply by amount of moles

110g×1.000mol = 110 g/mol

Answer:

Water is a remarkable substance, and its unique properties are largely due to the presence of polar covalent bonds and hydrogen bonds in its structure. These characteristics play a crucial role in the physical and chemical properties of water, making it essential for life as we know it.

Explanation:

The polar covalent bonds in water arise from the unequal sharing of electrons between oxygen and hydrogen atoms. This results in the oxygen atom having a partial negative charge (δ-) and the hydrogen atoms having partial positive charges (δ+). These charges create polarity within the water molecule, leading to the formation of hydrogen bonds.

Hydrogen bonds occur when the partially positive hydrogen atom of one water molecule is attracted to the partially negative oxygen atom of another water molecule. These hydrogen bonds are relatively weak individually, but when present in large numbers, they contribute to the cohesion, surface tension, and high boiling point of water.

The importance of these bonds is manifold. The cohesion between water molecules due to hydrogen bonding enables water to form droplets, have a high surface tension, and flow freely, facilitating transport within organisms and in the environment. Additionally, hydrogen bonding leads to the high specific heat capacity and heat of vaporization of water, making it an effective regulator of temperature in living organisms and ensuring stable environmental conditions.

Furthermore, hydrogen bonds play a crucial role in the unique properties of water as a solvent. The polar nature of water allows it to dissolve a wide range of substances, including ionic compounds and polar molecules, facilitating various biological processes such as nutrient transport and chemical reactions in cells.

The change in mass resulting from the release of heat when 1 mol of SO₂ is formed from the elements is -3.298 × 10⁷g/mol. This means that the mass decreases by this amount due to the release of energy, as described by the mass-energy equivalence principle.

To calculate the change in mass resulting from the release of heat when 1 mol of SO₂ is formed from the elements, we need to use the mass-energy equivalence principle, which states that mass and energy are interchangeable. The energy released or absorbed in a chemical reaction is related to the change in mass through the famous equation:

∆E = ∆m * c²

where ∆E is the change in energy, ∆m is the change in mass, and c is the speed of light.

The formation of 1 mol of SO₂ from the elements involves the following reaction:

S(s) + O₂(g) → SO₂(g)

The balanced equation shows that 1 mol of SO₂ is formed from 1 mol of S and 1 mol of O₂. The molar mass of S is 32.06 g/mol, and the molar mass of O₂ is 32.00 g/mol. Therefore, the mass of S and O₂ required to form 1 mol of SO₂ is:

Mass of S = 1 mol × 32.06 g/mol = 32.06 g

Mass of O₂ = 1 mol × 32.00 g/mol = 32.00 g

The heat of formation (∆Hf) of SO₂ is -296.83 kJ/mol (at 298 K and 1 atm), which means that 296.83 kJ of energy is released when 1 mol of SO₂ is formed from the elements.

Using the mass-energy equivalence principle, we can calculate the change in mass (∆m) as:

∆m = ∆E / c²

Substituting the values, we get:

∆m = (-296.83 kJ/mol) / (2.998 × 10⁸ m/s)²

∆m = -3.298 × 10¹⁰ kg/mol

We need to convert the change in mass from kg/mol to g/mol, so we multiply by 1000:

∆m = -3.298 × 10⁷ g/mol

Therefore, the change in mass resulting from the release of heat when 1 mol of SO₂ is formed from the elements is -3.298 × 10⁷ g/mol, which means that the mass decreases by this amount due to the release of energy.

Learn more about: Mass

brainly.com/question/11954533

#SPJ11

Answer:

MAIN IDEA
What the authors meant is not to judge people by their looks.

_____________________________________________________________

THE UGLY DUCKLING

The ugly duckling doesn't fit with the other ducklings and grows up, to be a fabulous bird. In the beginning, he is teased because of his looks, in a quote, "As the ugly duckling grew, many animals in the pond criticized him. His feathers were too dark, his neck was too long, and his body was too big. His fellow ducklings refused to recognize that underneath the feathers, the ugly duckling was kind, good, and gentle. The ugly duckling shed many tears because none of the other animals would play with him."

Near the end, however, it states, "He believed that the swans would never be his friends and looked down into the pond in despair. Then, his eyes opened wide, for he saw his reflection. To his great astonishment, the ugly duckling discovered that he was a beautiful, royal swan! The swans welcomed their new friend, whose lovely appearance was matched only by his kind heart. He now felt like he belonged." Throughout the course of the story, the other birds' views change since now they realize how awful they felt for mistreating the ugly duckling.

_____________________________________________________________

THE PRINCESS AND THE PEA

The king and queen didn't believe that she was a princess, so they had her endure the trial of sleeping on twenty mattresses with a pea under the very bottom one. Near the beginning of the story, it states, "The disheveled maiden looked at the king in disbelief. "I am a princess, come to see the prince," she explained, all the while shivering. The king summoned his wife, the queen, for advice. The queen looked at the hideous creature in disbelief, thinking that no princess would ever allow herself to be found in such a state. She thought quickly and came up with a clever plan. The queen put a small pea at the bottom of a bed and piled twenty mattresses on top of it. When the girl arrived at the room, she had to climb a ladder to reach the top of the bed, where she collapsed in exhaustion." This is when the king and queen were in doubt that she was a princess.

However later on it stated, "Bright and early the next morning, the king and queen arrived at the girl's bed-chamber. The queen asked the girl how she had slept the night before. "Absolutely terribly!" bemoaned the maiden. "I have spent the entire night tossing and turning. I don't know whether there is something hard in the bed, or your mattresses are rocks, but my body is black and blue." The queen and the king stared at the maiden in astonishment. Only a real princess would have such delicate skin that she could feel a pea under twenty mattresses. The queen and king brought her to the prince, who was thrilled to meet a real princess with such an independent spirit." As you can see the king and queen believed that she was a princess now because they stated, "Only a real princess would have such delicate skin that she could feel a pea under twenty mattresses."

_____________________________________________________________

CONCLUSION
Both stories focus on how the main character is doubted or mistreated because of how they look, but throughout the stories, the main character proves them wrong.

Explanation:

Have a great rest of your day
#TheWizzer

Answer:

A wave with a higher frequency have a shorter wavelength, the higher the sound it, the closer the arcs of the wavelength are, the faster the sound is, the shorter they are.

According to scied.ucar.edu  ~  "The frequency of a wave is inversely proportional to its wavelength. That means that waves with a high frequency have a short wavelength, while waves with a low frequency have a longer wavelength. Light waves have very, very short wavelengths."

Hope this helps

Explanation:

May I have brainliest please? :)

A wave with a higher frequency has a longer wavelength is a false.

A wave with a higher frequency has a longer wavelength is a false statement because shorter wavelength have higher frequency and also higher energy.

We know that longer wavelength of a wave having shorter frequency and shorter energy while on the other hand, the shorter wavelength of a wave having higher frequency and higher energy so we can conclude that the statement is false.

Learn more about frequency here: https://brainly.com/question/254161

The volume of gas when the pressure goes from 1.0 atm to 1.4 atm is 8,571.43 L.

When a car is driven into the river, it will implode due to the change in pressure. We are to calculate the volume of gas when the pressure goes from 1.0 atm to 1.4 atm if the internal volume of the car is 12,000 L.In order to solve the problem, we will use the combined gas law equation. The equation is given as follows;P1V1/T1 = P2V2/T2where P1 is the initial pressure, V1 is the initial volume, T1 is the initial temperature, P2 is the final pressure, V2 is the final volume, and T2 is the final temperature.We will assume that the initial temperature and final temperature are constant, and therefore, we can cancel them from the equation. Thus, the equation becomes;P1V1 = P2V2We can rearrange the equation to solve for V2 as follows;V2 = (P1V1)/P2Substituting the given values, we get;V2 = (1.0 atm * 12,000 L)/1.4 atmV2 = 8,571.43 L.

For more questions on pressure

https://brainly.com/question/24719118

#SPJ8

According to the information of the graph we can infer that if the water were cooled to 5°C the reaction time would be close to 30 seconds.

To establish what would the reaction time be if the water were cooled to 5°C we have to analyze the information of the graph specially the trend. In this case, we have to take into account where are located the point that relate time and temperature.

In this case, the trend is more time with less temperature. So if the water were colled to 5°C, the time would be close to 30 seconds.

Learn more about water in: https://brainly.com/question/28465561
#SPJ1

Answer: The volume of the gas sample at 760 mmHg and 35°C is 496.8 mL

Explanation: To solve this problem, we can use the combined gas law, which states that the pressure, volume, and temperature of a gas are related.

Using the formula, P1V1/T1 = P2V2/T2, we can substitute the given values to find the volume of the gas at the new conditions.

First, we need to convert the temperatures to Kelvin by adding 273.15 to each. So, T1 = 289.15 K and T2 = 308.15 K.

Now, we can substitute the given values:

740 mmHg * 450.0 mL / 289.15 K = 760 mmHg * V2 / 308.15 K

Simplifying this equation, we get V2 = (740 mmHg * 450.0 mL * 308.15 K) / (760 mmHg * 289.15 K)

Solving for V2, we get V2 = 496.8 mL.

Therefore, the volume of the gas sample at 760 mmHg and 35°C is 496.8 mL.

To learn more about gas laws and related problems, check out this verified answer on Brainly:

https://brainly.com/question/31746813

The reaction has a heat of 161.1 kJ/mol.

If 250 mL of a NaOH solution contain 1 milligrams of NaOH, the solution's molarity is 10-4 M. The amount of solute in 1 litre of solution is known as the molarity.

We can use the following formula to get the reaction's heat:

Q = m × c × ΔT

The total volume of the mixture is 500.0 mL because we are aware that the volume of each solution is 250.0 mL:

m = V × ρ

m = 500.0 mL × 1.025 g/mL

m = 512.5 g

The change in temperature must then be calculated:

ΔT = (48.8°C - 2.0°C) = 46.8°C

Assuming that the acid used is HCl and the base used is NaOH, their molar masses are:

HCl: 1 mol of HCl = 36.46 g/mol

NaOH: 1 mol of NaOH = 40.00 g/mol

The reaction between HCl and NaOH has the following chemical formula:

HCl + NaOH → NaCl + H2O

As can be seen, the reaction's stoichiometry is 1:1, which means that 1 mole of HCl combines with 1 mole of NaOH.

So, the following formula can be used to determine the reaction's heat:

Q = m × c × ΔT

Q = 512.5 g × 4.190 J/goC × 46.8°C

Q = 100,697 J or 100.697 kJ

Since both solutions have a 2.500 M molarity, the number of moles of either HCl or NaOH can be determined as follows:

moles = M × V

moles = 2.500 mol/L × 0.2500 L

moles = 0.6250 mol

Therefore, the heat of the reaction is:

Q/mol = Q / moles

Q/mol = 100.697 kJ / 0.6250 mol

Q/mol = 161.1 kJ/mol

To know more about reaction visit:-

https://brainly.com/question/14025220

#SPJ1

Answer:

10%

Explanation:

Out of the original layer, only ten percent is transferred to the next

The theoretical yield of solid silver in this reaction, starting with exactly 5.00 g of AgNO3, is 1.06 g Ag. This assumes perfect reaction conditions and complete conversion of reactants to products, which may not always be the case in reality.

To calculate the theoretical yield of solid silver in this reaction, we first need to balance the chemical equation:
3AgNO3 (aq) + Al (s) --> 3Ag (s) + Al(NO3)3 (aq)
Now we can see that the stoichiometry of the reaction is 3:1 for AgNO3 to Ag. This means that for every 3 moles of AgNO3 that react, 1 mole of Ag will be produced.

To calculate the theoretical yield, we need to convert 5.00 g of AgNO3 to moles. The molar mass of AgNO3 is 169.87 g/mol, so:
5.00 g AgNO3 x (1 mol AgNO3 / 169.87 g AgNO3) = 0.0294 mol AgNO3
since the stoichiometry of the reaction is 3:1 for AgNO3 to Ag, we can calculate the number of moles of Ag that would be produced:
0.0294 mol AgNO3 x (1 mol Ag / 3 mol AgNO3) = 0.00980 mol Ag
Finally, we can convert the moles of Ag to grams using the molar mass of Ag, which is 107.87 g/mol:
0.00980 mol Ag x (107.87 g Ag / 1 mol Ag) = 1.06 g Ag (rounded to two significant figures)

To know more about theoretical yield visit:-

https://brainly.com/question/30700754

#SPJ11

The doctor will use the unit "degrees Celsius (°C)" to measure temperature.

Temperature is a measure of the average kinetic energy of particles in a substance. The Celsius scale is commonly used in medical settings for measuring body temperature. On the Celsius scale, the freezing point of water is defined as 0°C, and the boiling point of water is defined as 100°C at standard atmospheric pressure.

Using a clinical thermometer, the doctor will place it in contact with the person's body, typically under the tongue, in the ear, or in the armpit, to obtain an accurate measurement of their body temperature. The reading will be displayed in degrees Celsius (°C), which is the most widely used temperature unit in the medical field.

learn more about degrees Celsius

https://brainly.com/question/1497440

#SPJ4

This formula is used to determine a solution's molality:

Molality is defined as the product of the mass of the solvent and the number of moles of the solute.

Solute concentration is 1.80 M.

Thus, 1.80 moles of solute are contained in one litre.

Mass of solvent equals mass of solution minus mass of solute.

Solution mass equals volume times density.

1 L is equal to 1000 cm3 of solution.

mass of solution is 1000 minus 0.824.

824 g is the solution's mass.

Number of moles times molar mass equals the solute's mass.

86.84 g/mol is the solute's molar mass.

Solute mass = 1.80 86.84

156.3 g is the solute's mass.

Solvent mass equals 824 minus 156.3.

Solvent mass is 667.7 g, or 0.6677 kg.

Solution's molality is equal to 1.80/0.6677.

The solution's molality is 2.70 mol/kg.

A solution's molality is the number of moles of solute per kilogram or per kilogram of solvent in the solution. As opposed to the definition of molarity, which is based on a certain volume of solution, this is the opposite. Molality is measured in chemistry using the mol/kg unit.

To know more about Motality, click on the link below:

https://brainly.com/question/14900816

#SPJ4