If the gas confined in a balloon with a volume of 0.84 L container initially at 28.2°C were increased to
30.2°C the gas' new volume would be?

They are the group one elements

All the elements in group 1 have similar chemical and physical properties, such as low densities, low melting points, and high reactivity. They are all soft metals that can easily be cut with a knife and have a single valence electron in their outermost shell, making them highly reactive and prone to forming ionic compounds with non-metals.

Hydrogen is technically not considered an alkali metal, but it is often included in discussions of group 1 elements due to its similar properties.

Learn more about elements:https://brainly.com/question/13025901

#SPJ1

1/4  temperature must give Mass of nitrogen at 0°c heated so that both it volume and pressure will be double.​

To double both the volume and pressure of a given mass of nitrogen at 0°C, we can utilize the combined gas law, which relates the initial and final states of a gas. The combined gas law is expressed as:

(P1 * V1) / T1 = (P2 * V2) / T2

Where P1 and P2 are the initial and final pressures, V1 and V2 are the initial and final volumes, and T1 and T2 are the initial and final temperatures.

Since we want to double both the volume and pressure, we can set P2 = 2P1 and V2 = 2V1. Plugging these values into the combined gas law equation, we get:

(2P1 * 2V1) / T1 = P1 * V1 / T2

Simplifying the equation, we find:

4P1V1 = P1V1 / T2

Cancelling out the common terms, we have:

4 = 1 / T2

Rearranging the equation, we find:

T2 = 1 / 4

Therefore, to double both the volume and pressure of the given mass of nitrogen at 0°C, it must be heated to a temperature of 1/4 or 0.25 times its initial temperature.

Know more about combined gas law here:

https://brainly.com/question/13154969

#SPJ8

Answer: Covalent

Explanation: By definition, covalent bonds are those in which the shared electrons are shared greater than 50% of the time between two atoms.

Answer:

liquid ethanol can be separated from a mixture of ethanol and water by fractional distillation and separation of various components of crude oil. This method works because the liquids in the mixture have different boiling points.

Explanation:

please give 5 star

The equilibrium expression for BCl3 would be:

Kc = ([PH3]^x * [BCl3]^y) / [PH3BCl3]

To calculate the equilibrium concentrations and the minimum mass of PH3BCl3 required to achieve equilibrium, we need the balanced chemical equation for the decomposition reaction and its corresponding equilibrium constant at 80 °C. Unfortunately, I don't have access to that specific information as it is beyond my knowledge cutoff in September 2021. However, I can provide you with a general approach to solving these types of equilibrium problems.

Equilibrium concentration of PH3:

Let's assume the balanced chemical equation for the decomposition of PH3BCl3 is:

PH3BCl3(g) ⇌ xPH3(g) + yBCl3(g)

The equilibrium expression using concentrations would be:

Kc = ([PH3]^x * [BCl3]^y) / [PH3BCl3]

To solve for the equilibrium concentration of PH3, you would need the values of x and y from the balanced equation and the equilibrium constant value (Kc) specific to the reaction at 80 °C.

Equilibrium concentration of BCl3:

Using the same balanced equation:

PH3BCl3(g) ⇌ xPH3(g) + yBCl3(g)

The equilibrium expression for BCl3 would be:

Kc = ([PH3]^x * [BCl3]^y) / [PH3BCl3]

Similar to the previous step, you would need the values of x and y from the balanced equation and the equilibrium constant value (Kc) specific to the reaction at 80 °C.

Minimum mass of PH3BCl3:

To determine the minimum mass of PH3BCl3 required to achieve equilibrium, you would need additional information such as the initial and equilibrium concentrations or the number of moles involved. With this information, you can calculate the moles of PH3BCl3 involved and then convert it to the minimum mass using the molar mass of PH3BCl3.

Please note that the specific values needed for the calculations depend on the actual reaction and its equilibrium constant at 80 °C, which I don't have access to. Therefore, I can't provide numerical calculations or units at this time.

Learn more about decomposition reaction here:

https://brainly.com/question/21106703

#SPJ11

Answer:

based on texture/ feel, oder/smell, melting/boiling point

Explanation:

Answer:

Smell it, drink it, throw it at someone.

Explanation:

If none of that hurts or kills anyone, you can mark everything that would off the list.

Answer:

pee

Explanation:

ppppppppppppppppppppppppppppppppppppp

Catalysts, such as the minerals deposited on hydrothermal vent walls, bring reactants together and increase the speed of the reactions without providing energy.

We can define catalysts as substances that increase the speed of a reaction. The catalysts themselves remain unchanged in a chemical reaction and work by lowering the temperature, pressure and energy levels.

Without a catalyst, a chemical reaction will take a long time to occur.

The rate of a reaction increases using a catalyst for the reaction. Some of the minerals that act as catalyst in hydrothermal vents are iron, nickel and sulfide minerals.

The oxides of most metals acts as catalysts. Inside the body of organisms, enzymes act as biological catalysts.

To learn more about catalysts, click here:

https://brainly.com/question/318426

#SPJ4

Answer:

[HClO₄] = 0.35 M

Explanation:

Neutralization reaction is:

HClO₄ + LiOH  →  LiClO₄  +  H₂O

In this case, we have a titration between a weak acid and a strong base.

In chemistry it is also called an acid base equilibrium.

HClO₄  +  H₂O  ⇄  ClO₄⁻   +  H₃O⁺       Ka

The weak acid is firstly neutralized by the strong base, in order to have a buffer solution before the equivalence point.

When we reach the equivalence point, mmoles of acid = mmoles of base and there is a formula to determine it so:

M acid . Volume of acid = M base . Volume of base

M acid . 100 mL = 0.75 M . 46.9 mL

M acid = (0.75 M . 46.9 mL) / 100 mL → 0.35 M

Answer:

+2

Explanation:

Protons are positive and electrons are negative, this ion has more positive charges than negative charges therefore the overall charge of the ion is +2.

+26 + -24 = +2

If an ion has 26 protons and 24 electrons, the charge of the ion will be +2.

HOW TO DETERMINE CHARGE OF AN ION:

Learn more about how to calculate charge of an ion at: https://brainly.com/question/14471616?referrer=searchResults

The mass of \(Al_{2} S_{3}\) produced is 15.616 grams.

The reaction taking place is as follows:

\(2Al+ 3S\) →\(Al_{2} S_{3} (s)\)

Moles of Al = mass/molar mass = 10.0g/27.0g/mol

= 0.370 mol

Moles of S = mass/molar mass = 15.0g/(32.065g/mol)

= 0.468 mol

Al and S reacts in the molar ratio of 2:3.

2 moles of Al reacts with 3 moles of S

0.370 moles of Al will react with S = (3/2)*0.370mol

= 0.555 mol

Similarly, 0.468 moles of S will react with Al = 2/3 *0.468mol

= 0.312 mol

Thus, Al is in excess and S is the limiting reactant (some of Al will be left over ,S will completely react)

So, moles of \(Al_{2} S_{3}\) produced=1/3*0.312 mol of S

= 0.104 mol

Mass of \(Al_{2} S_{3}\) produced = moles*molar mass of \(Al_{2} S_{3}\)

= 0.104mol*150.158g/mol

= 15.616 grams

To learn more about limiting reactants, here

https://brainly.com/question/14225536

#SPJ4

The CT scan operates at a very short wavelength of 1.78 x 10^-11 meters.

Electromagnetic radiation, including visible light, radio waves, X-rays, and gamma rays, travels through space as waves with a particular wavelength and frequency. The wavelength of the radiation is the distance between two adjacent peaks or troughs in the wave, while the frequency is the number of waves passing a point per unit time.

The relationship between wavelength and frequency is given by the equation:

c = λf

where c is the speed of light (approximately 3 x 10^8 meters per second), λ is the wavelength, and f is the frequency. This equation shows that the wavelength and frequency of electromagnetic radiation are inversely proportional.

For the MRI scan, the given frequency is 8.5 x 10^7 Hz. Using the above equation, we can calculate the wavelength as:

λ = c/f = 3 x 10^8 m/s / (8.5 x 10^7 Hz) = 3.53 meters

So, the MRI scan operates at a wavelength of 3.53 meters.

For the CT scan, the given frequency is 1.69 x 10^19 Hz. Using the same equation, we can calculate the wavelength as:

λ = c/f = 3 x 10^8 m/s / (1.69 x 10^19 Hz) = 1.78 x 10^-11 meters

So, the CT scan operates at a very short wavelength of 1.78 x 10^-11 meters. Such high frequency radiation is typically in the X-ray region of the electromagnetic spectrum, and is used in CT scans to produce detailed images of the inside of the body.

Learn more about CT Scan

brainly.com/question/1524856

#SPJ11

The total mass of 4 tin is in grams is 580 grams and in kg is 0.58kg.

One tin of chopped tomatoes weight is 145 grams

and we have to calculate it for 4

so for 4

145*4 =580 grams

and we have to change it into kilograms so

580 /1000  = .58kg

By 1,000, divide the number of grams.

To convert from grams to kilograms, simply divide by 1,000 because there are 1,000 grams in every kilogram. If necessary, construct the equation using fractions. Put the number of grams over 1 and divide it by the conversion factor, which is 1 kg / 1,000 g. Your answer in kilograms will result from the cancellation of the grams. Remember to use the appropriate units to mark your response.

know more about grams to kilograms click here;

https://brainly.com/question/12065899

Metals wish to lose valence electrons and nonmetals wish to gain valence electrons.

The best explanation for malleability among the given options is (C) The ability of the cations to slide past one another due to the delocalization of the electrons. Option C

Malleability refers to the property of a substance to be deformed or shaped into different forms without breaking or cracking. In metallic substances, such as metals, the atoms are arranged in a closely packed lattice structure held together by metallic bonds.

These metallic bonds involve the delocalization of electrons, meaning that the valence electrons are not bound to specific atoms but instead move freely throughout the metal lattice.

The delocalization of electrons allows for the cations (positively charged ions) to slide past one another when a force is applied. As a result, the metal can be easily deformed into various shapes without disrupting the overall structure.

Option (A) is incorrect because atoms do have internal structures. Option (B) is not specific to malleability and refers more to the concept of potential energy. Option (D) does not accurately explain the mechanism behind malleability. Therefore, option (C) provides the most accurate explanation for why malleability occurs in metallic substances.

For more such questions on malleability visit:

https://brainly.com/question/12181165

#SPJ8

The resonance structures for the O3 molecule is shown in the image attached.

The delocalization of electrons in certain molecules or ions is represented by resonance structures, sometimes referred to as resonance forms or canonical structures. They are used to describe molecular bonding in cases where a single Lewis structure is unable to do so.

Because of the presence of delocalized electrons or several bonding options, the arrangement of atoms and electrons in some compounds cannot be completely explained by a single Lewis structure.

Learn more about resonance structure:https://brainly.com/question/25022370

#SPJ4

The maximum safe operating temperature the engineer should recommend for this reaction is approximately 1063.77 degrees Celsius.

To calculate the maximum safe operating temperature, we need to consider the dimensions of the vessel, the maximum safe pressure, and the amount of gas inside.

First, let's convert the dimensions of the vessel from centimeters to meters:

Width = 48.0 cm = 0.48 m

Height = 57.6 cm = 0.576 m

Next, we need to calculate the volume of the vessel:

Volume = π * (radius)^2 * height

The radius of the vessel can be calculated as half of the width:

Radius = 0.48 m / 2 = 0.24 m

Volume = π * (0.24 m)^2 * 0.576 m

Volume ≈ 0.099 m^3

Now, we can use the ideal gas law to determine the maximum safe operating temperature. The ideal gas law is given by:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.

Rearranging the equation to solve for T:

T = (PV) / (nR)

To calculate the number of moles, we can use the molar mass of carbon dioxide (CO2):

Molar mass of CO2 = 12.01 g/mol (for carbon) + 2 * 16.00 g/mol (for oxygen)

Molar mass of CO2 ≈ 44.01 g/mol

Converting the mass of carbon dioxide from kilograms to grams:

Mass of CO2 = 2.45 kg * 1000 g/kg

Mass of CO2 = 2450 g

Now, we can calculate the number of moles:

Number of moles = Mass of CO2 / Molar mass of CO2

Number of moles = 2450 g / 44.01 g/mol

Number of moles ≈ 55.67 mol

The gas constant R is approximately 8.314 J/(mol·K).

Now, we can substitute the values into the equation:

T = (3.40 MPa * 0.099 m^3) / (55.67 mol * 8.314 J/(mol·K))

T ≈ 1063.77 K

Converting from Kelvin to Celsius:

T ≈ 1063.77 °C

The maximum safe operating temperature that the engineer should recommend for this reaction is approximately 1063.77 degrees Celsius.

To know more about temperature visit :

https://brainly.com/question/27944554

#SPJ11

Answer:

change

Explanation:

These terms refer to the change into the different states of  matter.

BRAINLIEST.

Tell me honnnnnn.

The Ksp of the solution is 3.2 * 10^-8.

The Ksp is called the solubility product . We know it to be the equilibrium constant that shows the extent to which a substance is dissolved in solution.

Now given that;

CaF2(s) ⇔ Ca^2+(aq)  +  2F^-(aq)

Ksp = [ Ca^2+] [F^-]^2

Ksp = [0.002] [0.004]^2

Ksp = 3.2 * 10^-8

Learn more about Ksp:https://brainly.com/question/27132799

#SPJ1

Answer:

Aluminum is highly reactive

Explanation:

Chemical property is defined as the property in which chemical composition of the substance changes.

For example, reactivity, oxidation state, inflammability etc are all chemical properties.

Therefore, we can conclude that out of the given options, Aluminum is highly reactive depict a chemical property of aluminum.

After 9 million years, only 12.5% of the original isotope will remain.

The half-life of a radioactive isotope is the amount of time it takes for half of the atoms in a sample to decay. In this case, the half-life of the isotope is 3 million years, which means that after 3 million years, half of the isotope will have decayed, and half will remain. After another 3 million years (for a total of 6 million years), half of the remaining isotope will have decayed, leaving 25% of the original amount.

After another 3 million years (for a total of 9 million years), another half of the remaining isotope will have decayed, leaving 12.5% of the original amount.

To find out what percent of the isotope is left after 9 million years, we can use the formula:

Percent remaining =\((0.5)^{(t/h)\) x 100

Where t is the time elapsed and h is the half-life of the isotope. Plugging in the values, we get:

Percent remaining = \((0.5)^{(9/3)\) x 100
Percent remaining = \((0.5)^3\) x 100
Percent remaining = 12.5%

Therefore, after 9 million years, only 12.5% of the original isotope will remain. The isotope has undergone three half-lives, each time reducing its quantity by half, resulting in a significant decrease in the overall amount present.

To know more about isotope, refer to the link below:

https://brainly.com/question/12955625#

#SPJ11

Answer:

Explanation:

Soil is composed of both biotic—living and once-living things, like plants and insects—and abiotic materials—nonliving factors, like minerals, water, and air. Soil contains air, water, and minerals as well as plant and animal matter, both living and dead.

The statement that soil contains only non-living things is false.

The soil is composed of water, minerals, organic matter, water, and air.

The average soil contains 45 percent minerals, 5 percent organic matter, 20-30 percent water, and 20-30 percent air.

These figures are, at best, approximations. In actuality, the soil is a complex and dynamic system.

Thus, the given statement is false.

Learn more about soil

https://brainly.com/question/224605

Answer:

Mass = 58.96 g

Explanation:

Given data:

Mass of CH₄ = 21.5 g

Mass of O₂ = 387.5 g

Mass of CO₂ formed = ?

Solution:

Chemical equation:

CH₄ + 2O₂       →   CO₂ +  2H₂O

Number of moles of CH₄:

Number of moles = mass / molar mass

Number of moles = 21.5 g/ 16 g/mol

Number of moles = 1.34 mol

Number of moles of O₂ :

Number of moles = mass / molar mass

Number of moles = 387.5 g/ 32 g/mol

Number of moles = 12.1 mol

now we will compare the moles of CO₂  with O₂  and CH₄.

                       O₂             :          CO₂

                          2             :            1

                          12.1          :          1/2×12.1 = 6.05 mol

                        CH₄          :          CO₂

                           1              :            1

                          1.34           :         1.34

Number of moles of CO₂ produced by  CH₄ are less thus it will limiting reactant.

Mass of  CO₂:

Mass = number of moles × molar mass

Mass =  1.34 mol × 44 g/mol

Mass = 58.96 g

The boiling point of the 1.3 m solution of C₆H₁₄ in benzene is  83.5 °C.

The boiling point of the 1.3 m (molality) solution of C₆H₁₄ in benzene is determined using the equation:

where

Given data:

Kb (benzene) = 2.65 °C/m

m = 1.3 m

Substituting the values into the equation:

ΔT = 2.65 °C/m * 1.3 m

ΔT = 3.445 °C

Boiling point of the solution = Boiling point of benzene + ΔT

Boiling point of the solution = 80.10 °C + 3.445 °C

Boiling point of the solution  = 83.545 °C

Learn more about boiling point at: https://brainly.com/question/1530966

#SPJ1

Answer:

1.0625 g

Explanation:

Number of moles in 5g of NH4NO3 = 5.0g/80g/mol = 0.0625 moles

Again the balanced reaction equation is;

NH3 + HNO3 → NH4NO3

So,

1 mole of NH3 yields 1 mole of NH4NO3

x moles of NH3 yields 0.0625 moles of NH4NO3

x = 0.0625 moles of NH3

Mass of NH3 = number of moles * molar mass

Mass of NH3 = 0.0625 moles * 17g/mol

Mass of NH3 = 1.0625 g

The reason why the coefficients of an elementary step equal the reaction orders of its rate law, but overall reaction do not is because d) an elementary step is a single molecular event that occurs in one step and can be directly related to its rate law.

On the other hand, the overall reaction is generally a series of elementary steps which are not necessarily proportional to the product of the overall reaction concentrations.

This means that the rate law for the overall reaction cannot be directly determined from the stoichiometry of the reaction. Additionally, an elementary step uses an average reaction rate calculation, while the overall reaction uses an instantaneous rate calculation.

Therefore, option (d) is the correct answer.

To know more about rate law click on the below link:

https://brainly.com/question/22715442

#SPJ11