What happens energetically when chemical bonds are formed?.

The SI base unit for length is meter (m), for mass is kilogram (kg), for time is second (s), for electric current is ampere (A), for temperature is kelvin (K), for amount of substance is mole (mol), and for luminous intensity is candela (cd).

Length: The SI base unit for length is meter (m), which is the standard unit for measuring distance or size. Mass: The SI base unit for mass is kilogram (kg), which is the standard unit for measuring the amount of matter in an object. Time: The SI base unit for time is second (s), which is the standard unit for measuring the duration or interval between events.

Electric current: The SI base unit for electric current is ampere (A), which is the standard unit for measuring the flow of electric charge. Temperature: The SI base unit for temperature is kelvin (K), which is the standard unit for measuring the average kinetic energy of particles in a substance. Amount of substance: The SI base unit for amount of substance is mole (mol), which is the standard unit for measuring the quantity of particles (atoms, molecules, etc.) in a substance. Luminous intensity: The SI base unit for luminous intensity is candela (cd), which is the standard unit for measuring the brightness of light emitted by a source.

To know more about mass visit:

https://brainly.com/question/11954533

#SPJ11

London dispersion forces are: a)Found within nonpolar molecules b)Stronger for larger molecules than smaller ones d) Much weaker than the covalent bonds within the hydrocarbon molecule. So, options a, b, d applied.

The London dispersion force considered as  the weakest intermolecular force. The London dispersion force is considered as a  temporary attractive force that results when the electrons present in  two adjacent atoms occupy the positions that make the atoms to form the temporary dipoles. This force is sometimes called as  induced dipole-induced dipole attraction

These forces are defined for the molecule. These type of forces behaves positively  when temperature changes. When we increase the temperature ,in that case molecules starts making distance from each other due to that intermolecular force of attraction gets weaker.

Learn more about London dispersion forces at:

https://brainly.com/question/4301021

#SPJ4

(Complete question) is:

London dispersion forces . (select all that apply.) multiple select question. are

a)Found within nonpolar molecules

b)Stronger for larger molecules than smaller ones

c)Intermolecular attractions are not affected when a liquid evaporates

d)Much weaker than the covalent bonds within the hydrocarbon molecule

Answer:

1.1 x 10⁴ J

Explanation:

To calculate eth energy needed, you need to use the following equation:

Q = mcΔT

In this equation,

-----> Q = energy/heat (J)

-----> m = mass (g)

-----> c = specific heat (4.184 J/g°C)

-----> ΔT = change in temperature (°C)

You can plug the given values into the equation and solve.

Q = mcΔT

Q = (75.0 g)(4.184 J/g°C)(55.0 °C - 20.0 °C)

Q = (75.0 g)(4.184 J/g°C)(35.0)

Q = 11,000 J

Q = 1.1 x 10⁴ J

m(K) is equal to 1126 g, or 1.13 kg, or 28.8 mol times 39.10 g/mol. As a result, none of the suggested solutions are the correct one.

As a result, to convert from kg to g, you must double the amount before kg by 1000. You can learn to divide the number preceding the unit by 1000 by using the examples of kilogrammes and grammes.

One kilogramme is equal to 1,000 grammes; the word "kilo" stands for 1,000. The prefix kilo is represented by the sign k, and the unit of mass known as the gramme is represented by the symbol g.kg. So ½ kg of bananas is the same as 500 g of bananas, or 5 × 102 g of bananas.

To know more about mol visit:-

https://brainly.com/question/24191779

#SPJ1

A coffee cup calorimeter is a type of basic calorimeter. A calorimeter measures the heat transfer between a system and its surroundings.

The coffee cup calorimeter is a basic calorimeter made comprised of a Styrofoam cup, a thermometer, and a stirrer. It is used to calculate the amount of heat emitted or absorbed during a chemical reaction or physical change, such as salt dissolving in water.

The reaction occurs in the cup of a coffee cup calorimeter, and heat is absorbed or released by the cup and its contents. The quantity of heat involved in the reaction can be calculated by monitoring the temperature change in the cup.

While not as precise as more advanced calorimeters, such as bomb calorimeters, the coffee cup calorimeter is a helpful tool for measuring the heat involved in many common chemical processes, and it is reasonably simple and affordable to use.

To Learn More About reaction click

https://brainly.com/question/28984750

#SPJ4

Answer:

Electrolytes, particularly sodium, help the body maintain normal fluid levels in the fluid compartments because the amount of fluid a compartment contains depends on the amount (concentration) of electrolytes in it. If the electrolyte concentration is high, fluid moves into that compartment (a process called osmosis).

Explanation:

Answer:

Electrolytes are minerals in your body that have an electric charge. They are in your blood, urine, tissues, and other body fluids. Electrolytes are important because they help

Balance the amount of water in your body

Balance your body's acid/base (pH) level

Move nutrients into your cells

Move wastes out of your cells

Make sure that your nerves, muscles, the heart, and the brain work the way they should

Sodium, calcium, potassium, chloride, phosphate, and magnesium are all electrolytes. You get them from the foods you eat and the fluids you drink.

The levels of electrolytes in your body can become too low or too high. This can happen when the amount of water in your body changes. The amount of water that you take in should equal the amount you lose. If something upsets this balance, you may have too little water (dehydration) or too much water (overhydration). Some medicines, vomiting, diarrhea, sweating, and liver or kidney problems can all upset your water balance.

Treatment helps you to manage the imbalance. It also involves identifying and treating what caused the imbalance.

The planet's albedo has ability to reflect light.

The planetary albedo would be the percentage of incoming solar radiation that Earth scatters back into space. The processes that control the quantity, distribution, and fluctuation of this reflected energy are crucial to the Earth's energy balance and have a significant impact on both climate including climate change.

Temperatures rise as a result of carbon dioxide, prolonging the growing season as well as raising the humidity. Each of these elements has stimulated some further plant growth. But hotter weather also stresses plants. Plants require more water to live in an extended, warmer growing season.

Therefore,  the planet's albedo has ability to reflect light.

To know more about planet's albedo

https://brainly.com/question/7138899

#SPJ4

I am so sorry i cant help but good luck

Concentrated sodium hydroxide (NaOH) must be treated with caution because it is a highly corrosive and caustic substance. Proper protective equipment includes chemical-resistant gloves and safety goggles.

Handling concentrated sodium hydroxide requires strict safety measures due to its potential to cause severe burns and damage to the skin, eyes, and respiratory system. In addition to chemical-resistant gloves and safety goggles, other protective equipment such as a lab coat, closed-toe shoes, and even a face shield can be used to minimize the risk of exposure. In case of accidental contact, it is crucial to have an eyewash station and safety shower nearby to quickly rinse off any NaOH that comes into contact with the skin or eyes.

Furthermore, it is essential to work in a well-ventilated area to prevent the inhalation of harmful fumes, and proper storage guidelines must be followed. Sodium hydroxide should be stored in a tightly sealed, labeled container, away from any acidic or flammable materials. Lastly, it is important to be knowledgeable about emergency procedures and first-aid measures to handle any potential accidents or incidents involving concentrated NaOH.

Know more about Concentrated sodium hydroxide here:

https://brainly.com/question/28612681

#SPJ11

Answer: nitrogen and carbon dioxide

Explanation: I hope this helps :)

The detector would show various colors to show the elements in the mixture from the flame.

The whole idea of the use of spectroscopy is that we are able to study the elements by the use of light. We know that light can be able to reveal  the properties or the components that we have in a system. In this case, we have a lamp that is the light source (lamp) and then we have a flame where we have to put in the sample to be analyzed and then we have the detector that shows the spectrum of the substance that is read out.

We know that we would have a pure spectrum when we have sin gle lines in the spectrum. If we have a spectrum that is jumbled up and there are so many lines in the spectrum then we could come up with the idea that there is a mixture of substance as we would see a combination of colors in the spectrum of the element.

Learn more about spectrum:https://brainly.com/question/6836691

#SPJ1

The amount of heat gained by the water is 500 calories. Thus, option D is correct.

Given:

Mass of water (m) = 100 g

Change in temperature (ΔT) = 30°C - 25°C = 5°C

The specific heat capacity of water (c) is approximately 1 calorie/gram°C.

Now, the amount of heat gained by the water,

Q = mcΔT

Where:

Q is the heat gained or lost by the substance

m is the mass of the substance

c is the specific heat capacity of the substance

ΔT is the change in temperature

Plugging in the values into the formula:

Q = 100 × 1 × 5

Q = 500 calories

Therefore, the amount of heat gained by the water is 500 calories.

Learn more about heat, here:

https://brainly.com/question/31608647

#SPJ1

Answer:

B. Mass in motion. Is the definition of momentum

The structure of alkene is given below in the image.

Alkenes are described as both branched or unbranched hydrocarbons that possess at least one carbon-carbon double bond (CC) and feature a popular system of CnH2n [1].

Alkanes are organic compounds that encompass single-bonded carbon and hydrogen atoms. The formulation for Alkanes is CnH2n+2, subdivided into 3 companies – chain alkanes, cycloalkanes, and branched alkanes.

The geometry around each carbon atom is based totally on a trigonal planar shape, due to the fact, that each carbon has three electrons around it. This must make the angle of each bond one hundred twenty.

Learn more about Alkanes here: https://brainly.com/question/17040500

#SPJ4

Answer:

The pH of a solution is a measure of its concentration of hydrogen ions. The higher the concentration of H + ions in an acidic solution, the lower the pH. A pH of 1 represents a hydrogen ion concentration of 0.1 mol/dm 3.

...

pH and hydrogen ion concentration.

Concentration pH

0.001 mol/dm 3 3

0.0001 mol/dm 3 4

Explanation:

Answer:

0.0001

That the answer your welcom

Answer:

push or pull

Explanation:

Answer:What bonding pattern do you observe that you could use to predict whether a compound will be gas at standard temperature and pressure?

Explanation:

Silicon (symbol Si) is a group 14 metalloid.

Answer:

The first one is Propane

The second one is HEPTANE

The third one is octane

The 4th is butane

the 5th is decane

The structures have been named according to IUPAC as \(\rm C_3H_8\) Propane, \(\rm C_7H_{16}\) Heptane, \(\rm C_8H_{18}\) Octane, \(\rm C_4H_{10}\) Butane, and \(\rm C_{10}H_{22}\) Decane.

The images has been the representation of the ball and stick structure of the compounds. The central balls have been the representation of the carbon atom , with small balls attached to the sticks have been the representation of the hydrogen attached.

The following structures has been given as:

The structures have been named according to IUPAC as \(\rm C_3H_8\) Propane, \(\rm C_7H_{16}\) Heptane, \(\rm C_8H_{18}\) Octane, \(\rm C_4H_{10}\) Butane, and \(\rm C_{10}H_{22}\) Decane.

For more information about structure of hydrocarbons, refer to the link:

https://brainly.com/question/8049265

Chymotrypsin has an α-helix that contains 2.5 turns. Approximately 9 amino acids are involved in this helix.

What is chymotrypsin?

To know more about chymotrypsin, click the link given below:

https://brainly.com/question/13638833

#SPJ1

The wavelength of the emitted photon is approximately 2.44 μm.

The wavelength of the emitted photon can be determined using the Rydberg formula as follow

\(\frac{1}{\lambda}=R_H\left(\frac{1}{n_1^2}-\frac{1}{n_2^2}\right)\)

where: lambda is the wavelength of the emitted photon,

\(R_H=1.0974\times10^7\text{m}^{-1} ,$n_1=19 n_2=5 :\frac{1}\)

\({\lambda}=R_H\left(\frac{1}{19^2}-\frac{1}{5^2}\right) \frac{1}\\\\\\{lambda}=1.0974\times10^7\text{m}^{-1}\left(\frac{1}{361}-\frac{1}{25}\right) \frac{1}\\{\lambda}=1.0974\times10^7\text{m}^{-1}\left(0.002709-0.04\right) \frac{1}\\{\lambda}=1.0974\times10^7\text{m}^{-1}\times(-0.037291) \frac{1}{\lambda}=-409446.34\text{m}^{-1} \lambda=-\frac{1}{409446.34\text{m}^{-1}}=2.44\times10^{-6}\text{m}\)

Therefore, the wavelength of the emitted photon is approximately 2.44 μm.

Rounded to two decimal places, this value is equal to 2.45 μm. Thus, the correct option is A) 2.45μm.

Learn more about wavelenght with the given link,

https://brainly.com/question/10750459

#SPJ11

The measured volume of hydrogen gas will be too high.

The volume of hydrogen is measured by collecting the gas over water. The volume of the gas is measured as the volume of water displaced by the gas in an inverted container.

When air leaks into the graduated cylinder, more volume of water is displaced hence a higher volume of hydrogen gas is measured.The calculated molar volume of hydrogen will be too high as a result of this error

The gas being recorded during the experiment would not only include hydrogen gas, but the air that leaked into the eudiometer tube as well. This leads to the increase in the volume of hydrogen gas which will be too high.

Since the volume of hydrogen is too high, therefore the calculated molar volume of hydrogen would also be too high.

To know more about volume, refer: brainly.com/question/10609459

#SPJ4

The molecular formula for the compound with the empirical formula S3O2 and a molecular mass of 144.3 g is S6O4.

The given empirical formula for a compound is S3O2 and the molecular mass of that compound is 144.3 g. Let's find the molecular formula for the given compound using the given information.The empirical formula mass of the given compound can be calculated by adding the atomic masses of each of its atoms together based on their empirical formula as follows:S3O2 ⇒ (3 × atomic mass of S) + (2 × atomic mass of O)⇒ (3 × 32.1) + (2 × 16)⇒ 96.3 + 32⇒ 128.3 g/molThe molecular formula of a compound is the integer multiple of its empirical formula. To calculate the molecular formula of the given compound, we need to find the ratio between its empirical formula mass and molecular mass as follows:Molecular formula mass / Empirical formula mass = n (an integer multiple)Molecular formula mass / 128.3 g/mol = n (an integer)Molecular formula mass = n × 128.3 g/molThe molecular mass of the given compound is 144.3 g/mol.Therefore, n = Molecular formula mass / Empirical formula massMolecular formula mass = n × Empirical formula mass = n × 128.3 g/mol = (144.3 g/mol)/nLet's check if n = 2 is correct. When n = 2, we get the following molecular formula mass:Molecular formula mass = n × Empirical formula mass= 2 × 128.3 g/mol= 256.6 g/molThe molecular formula of the given compound is S6O4 when n = 2. The empirical formula mass of the compound is 128.3 g/mol. Therefore, the molecular formula for the compound with the empirical formula S3O2 and a molecular mass of 144.3 g is S6O4.

learn more about molecular

https://brainly.com/question/10778879

#SPJ11

Answer:

A: 2.525 x 10-4 mol

B: 2.583 x 10-4 mol

Explanation:

Part A:

Data Given:

. Temperature of water (H2O) = 21.3°C

Convert Temperature to Kelvin

T = °C + 273

T = 21.3 + 273 = 294.3 K

volume of (H2O) gaseous state = 5.1 mL

Convert mL to liter

1000 mL = 1L

5.1 ml = 5.1/1000 = 0.0051 L

Pressure = 1.2 atm

. no. of moles = ?

Solution

no. of moles can be calculated by using ideal gas formula

PV = nRT

Rearrange the equation for no. of moles

n=PV/RT......... (1)

where

P = pressure

V = Volume

T= Temperature

n = Number of moles

R = ideal gas constant

where

R = 0.08206 L.atm/ mol. K

Now put the value in formula (1) to calculate no. of moles of

n = 1.2 atm x 0.0051 L / 0.08206 L.atm.mol-1. K-1 x 294.3 K

n = 0.0061 atm.L / 24.162 L.atm.mol-1

n = 2.525 x 10-4 mol

no. of moles of gas (H2O) = 2.525 x 10-4 mol

Part B:

Data Given:

Temperature of water (H2) = 21.3°C

Convert Temperature to Kelvin

T = "C + 273

T= 21.3 + 273 = 294.3 K

volume of (H2) gas = 5.2 mL

Convert mL to liter

1000 mL = 1 L

5.2 ml = 5.2/1000 = 0.0052 L

Pressure = 1.2 atm

. no. of moles = ?

Solution

no. of moles can be calculated by using ideal gas formula

PV = nRT

Rearrange the equation for no. of moles

n= PV / RT......... (1)

where

P = pressure

V = Volume

T= Temperature

n = Number of moles

R = ideal gas constant

where

R = 0.08206 L.atm/mol. K

Now put the value in formula (1) to calculate no. of moles of

n = 1.2 atm x 0.0052 L/0.08206 L.atm.mol-1. K-1 x 294.3 K

n = 0.0062 atm.L/ 24.162 L.atm.mol-1

n = 2.583 x 10-4 mol

I

no. of moles of gas (H2) = 2.583 x 10-4 mol

Answer:

The answer is B. 1,2,6,9,27,54

Explanation:

If the temperature of a fixed quantity of gas decreases by a factor of two and the pressure decreases by a factor of four, then the ratio of pressure (P₂) to temperature (T₂) remains constant.

If the temperature of a fixed quantity of gas decreases by a factor of two and the pressure decreases by a factor of four, we can determine the relationship between temperature, pressure, and volume using the combined gas law.

The combined gas law states:

P₁V₁ / T₁ = P₂V₂ / T₂

Let's assume that the volume (V) remains constant in this scenario, as the problem states a fixed quantity of gas.

Temperature factor (T₁/T₂) = 2 (temperature decreases by a factor of two)

Pressure factor (P₁/P₂) = 4 (pressure decreases by a factor of four)

Put these values into the combined gas law:

P₁V₁ / T₁ = P₂V₂ / T₂

Since V₁ = V₂ (constant volume), we can cancel out the volume terms:

P₁ / T₁ = P₂ / T₂

Now, let's substitute the given factors into the equation:

4 / 2 = P₂ / T₂

2 = P₂ / T₂

From this equation, we can conclude that the ratio of pressure (P₂) to temperature (T₂) remains constant. In other words, if the temperature of a fixed quantity of gas decreases by a factor of two and the pressure decreases by a factor of four, their ratio (P₂/T₂) will remain the same.

To know more about temperature here

https://brainly.com/question/7510619

#SPJ4

1 meter = 1000 km

2500 meter = 2500/1000 km

= 2.5 km

Answer:

60 mph (miles per hour)

Explanation:

0.5 hours is 1/2 of an hour, so to get the number of miles for a whole hour you multiply the miles ran by 2.

30 times 2 is 60.