The temperature inside my refrigerator is about 40 Celsius. That temperature in Kelvin is K.
I place a balloon in my fridge that initially has a temperature of 220 C. This is K.

If the original volume of the balloon is 0.5 liters, what will be the volume of the balloon when it is fully cooled by my refrigerator? liters. (Round to two decimal places)

The amount of 0.303N NaOH needed to neutralize a 13.0 ml sample of acid is 37,3 ml. Acid is 0.823N normal, according to the standard.

The idea of neutralization, according to which an acid reacts with a base to create salt and water. By comparing the molarity of the base to the amount of base needed for neutralization, it is possible to calculate the molarity of the acid. Once the molarity and the acid's valence (or charge) have been multiplied, the acid's normalcy can be determined.

By deducting the volume of NaOH (37.3 ml) from the volume of the acid sample in Step 1, you can calculate the amount of acid that was utilized in the neutralization procedure (13.0 ml).

Consequently, 13.0 ml to 37.3 ml

= -24.3 ml

Use the equation moles = normality x volume to determine the number of moles of acid that were used in the process.

Consequently, moles equal 0.303N x -24.3 ml.

= -7.33 moles

Determine the acid's normality by multiplying the volume by the formula normalcy = moles.

As a result: normalcy = -7.33 moles / 13.0 ml

= -0.823N

To learn more about neutralization, visit

brainly.com/question/15347368

#SPJ1

Explanation:

...

Answer:

A small amount of chemical splashes in Frank's eye. What should happen next? Frank should go to the eyewash station while his lab partner tells the teacher what happened.

Explanation:

Brainlist

The synthesis of Ammonia occurs over a catalyst.

Ammonia (NH3) can be synthesized through the Haber-Bosch process, which is a large-scale industrial process used to produce ammonia from nitrogen gas (N2) and hydrogen gas (H2). The process is typically carried out at high pressure (150-450 atm) and high temperature (450-550°C) using an iron-based catalyst. The reaction can be represented by the following equation:

N2 + 3H2 -> 2NH3

In the Haber-Bosch process, nitrogen gas and hydrogen gas are compressed and mixed, then fed into a reactor where they are heated to the desired temperature and pressure. The reaction mixture is then passed over an iron-based catalyst.

Learn more about Ammonia:https://brainly.com/question/15409518

#SPJ1

The percent ionization of the nitrous acid in the 0.036 M aqueous solution is 2.1%.

The osmotic pressure (π) of a solution can be related to the molar concentration (M) of the solute and the temperature (T) of the solution by the following equation:

π = MRT

Where R is the gas constant.

We can use this equation to calculate the molar concentration of the nitrous acid solution:

M = π / RT

M = (0.93 atm) / (0.0821 L·atm/(mol·K) x 298 K)

M = 0.036 M

This is the molar concentration of the undissociated nitrous acid in the solution. To calculate the percent ionization of the acid, we need to know the concentration of the H+ and NO2- ions in the solution.

The balanced chemical equation for the dissociation of nitrous acid is:

HNO2(aq) ⇌ H+(aq) + NO2-(aq)

Let x be the extent of ionization of the nitrous acid. Then the concentration of H+ and NO2- ions can be expressed in terms of x as follows:

[H+] = x M

[NO2-] = x M

The concentration of the undissociated nitrous acid is (1-x)M.

The expression for the equilibrium constant (Ka) of the reaction can be written as:

Ka = [H+] [NO2-] / [HNO2]

Substituting the concentrations in terms of x, we get:

Ka = x^2M / (1-x)M

Simplifying the above equation, we get:

Ka = x^2 / (1-x)

The percent ionization of the acid is the fraction of the original HNO2 molecules that dissociate into H+ and NO2- ions. It can be calculated as follows:

% ionization = (concentration of H+ ions) / (initial concentration of HNO2) x 100

% ionization = (x M) / (M) x 100

% ionization = x x 100

Substituting the value of x from the above equation for Ka, we get:

Ka = x^2 / (1-x)

x = sqrt(Ka / (1+Ka))

We can calculate the value of Ka using the standard reference value of the acid dissociation constant (Ka) for nitrous acid at 25°C, which is 4.5 x 10^-4.

x = sqrt(4.5 x 10^-4 / (1+4.5 x 10^-4))

x = 0.021

% ionization = 0.021 x 100

% ionization = 2.1%

Therefore, the percent ionization of the nitrous acid in the 0.036 M aqueous solution is 2.1%.

Learn more about osmotic pressure here : brainly.com/question/25413362

#SPJ1

Answer:

The problem provides you with the solubility of potassium chloride,

KCl

, in water at

20

∘

C

, which is said to be equal to

34 g / 100 g H

2

O

.

This means that at

20

∘

C

, a saturated solution of potassium chloride will contain

34 g

of dissolved salt for every

100 g

of water.

As you know, a saturated solution is a solution that holds the maximum amount of dissolved salt. Adding more solid to a saturated solution will cause the solid to remain undissolved.

In your case, you can create a saturated solution of potassium chloride by dissolving

34 g

of salt in

100 g

of water at

20

∘

C

.

Now, your goal here is to figure out how much potassium chloride can be dissolved in

300 g

of water at this temperature. To do that, use the given solubility as a conversion factor to take you from grams of salt to grams of water

Answer:

Magnetic field

Explanation:

Answer:

natural mineral water.

Ratio of moles of NH₃ produced to moles of N₂ used: 2 moles of NH₃ / 1 mole of N₂

Ratio of moles of NH₃ produced to moles of H₂ used: 2 moles of NH₃ / 3 moles of H₂

From the balanced chemical equation:

N₂ + 3 H₂ ⟶ 2 NH₃

We can determine the ratio of moles of products to the moles of each reactant.

Ratio of moles of NH₃ produced to moles of N₂ used:

From the balanced equation, we can see that 1 mole of N₂ reacts to produce 2 moles of NH₃. Therefore, the ratio is:

2 moles of NH₃ / 1 mole of N₂

Ratio of moles of NH₃ produced to moles of H₂ used:

From the balanced equation, we can see that 3 moles of H₂ react to produce 2 moles of NH₃. Therefore, the ratio is:

2 moles of NH₃ / 3 moles of H₂

Learn more about the mole ratio at https://brainly.com/question/19099163

#SPJ1

Given the equation of reaction;

N₂ + 3 H₂ ---> 2 NH₃

Calculate the ratio of the moles of produced to the moles of each of the reactants used. (Write two separate ratios.)

The statement that best describes how an ionic compound dissolves in water is as follows: it separates into individual molecules and is an electrolyte, which is option C.

Ionic compound is any compound is a chemical compound composed of ions (charged atoms) held together by electrostatic forces termed ionic bonding.

Ionic compounds are electrolytes i.e. a substance when, in solution or when molten, ionizes and conducts electricity.

For example; sodium chloride (NaCl) is an ionic compound breaks down into sodium ions (Na+) and chloride ion (Cl-).

Therefore, the statement that best describes how an ionic compound dissolves in water is as follows: it separates into individual molecules and is an electrolyte.

Learn more about ionic compound at: https://brainly.com/question/9167977

#SPJ1

Answer:

2.7 moles of solute per 1000 mL of solution.

Explanation:

Hello,

In this case, molarity is defined as the ratio of the moles of the solute to the volume of the solution in litres, thus, for a 2.7-M solution, it is clear that we have 2.7 moles of the solute in 1 L of solution, thus the option having the proper relation is 2.7 moles of solute per 1000 mL of solution as 1 L equals 1000 mL.

Best regards.

Answer:

6 electrons

Explanation:

Speed must a neutron travel to have a wavelength of 25.0 pm.The mass of a neutron is 1.67x10^-27 kg is 3.17 × 10³ m/s.

Given that :

mass of neutron = 1.67 × 10⁻²⁷ Kg

wavelength = 25 pm = 2.5 × 10⁻¹¹m

h = 6.63 × 10⁻³⁴ Js   ( 1 J = Kg m /s² )

using debroglie,s wavelength , we get

λ = h / mv

v =  h / mλ

v = 6.63 × 10⁻³⁴ / ( 2.5 × 10⁻¹¹ × 1.67 × 10⁻²⁷  )

v = 6.63 × 10⁻³⁴ J.s / 20.87 × 10⁻³⁸

v = 3.17 × 10³ m/s

Thus, Speed must a neutron travel to have a wavelength of 25.0 pm.The mass of a neutron is 1.67x10^-27 kg is 3.17 × 10³ m/s.

To learn more about wavelength here

https://brainly.com/question/28762766

#SPJ1

For the solution with a pH of 7.9:

pH = 7.9

pOH = 14 - pH = 14 - 7.9 = 6.1

[H+] = 10^(-pH) = 10^(-7.9) (in mol/L)

[OH-] = 10^(-pOH) = 10^(-6.1) (in mol/L)

The pH of a solution is a measure of its acidity, while pOH is a measure of its alkalinity. The pH and pOH values are related through the equation pH + pOH = 14.

For the solution with a pH of 4.5:

pH = 4.5

pOH = 14 - pH = 14 - 4.5 = 9.5

[H+] = 10^(-pH) = 10^(-4.5) (in mol/L)

[OH-] = 10^(-pOH) = 10^(-9.5) (in mol/L)

For the solution with a pH of 7.9:

pH = 7.9

pOH = 14 - pH = 14 - 7.9 = 6.1

[H+] = 10^(-pH) = 10^(-7.9) (in mol/L)

[OH-] = 10^(-pOH) = 10^(-6.1) (in mol/L)

Note: The [H+] and [OH-] concentrations can also be calculated using the equation [H+][OH-] = 1 x 10^(-14) at 25°C.

For more questions on alkalinity, click on:

https://brainly.com/question/867708

#SPJ8

Answer: D) Eight

Just pretend this part doesn't exist nope nothing to see here the answer is correct on edge2020 I swear on my brainly points

Answer:

d

Explanation:

Answer:

1.19 x 10²¹ atoms of Cu (copper).

Explanation:

What is given?

Mass of copper (Cu) = 0.125 g.

Molar mass of Cu = 63.5 g/mol.

Avogadro's number = 6.022 x 10²³ atoms/mol.

Step-by-step solution:

First, let's convert 0.125 g of Cu to moles using its molar mass, like this:

And now, let's use the Avogadro's number, which is telling us that there are 6.022 x 10²³ atoms of a certain element in 1 mol. The conversion will look like this:

The answer is that we have 1.19 x 10²¹ atoms of Cu (copper) in 0.125 g of Cu (copper).

Answer:

Option B is correct.

Only this option has the first underlined element with a lower oxidation number than the second amongst the options.

Explanation:

Complete Question

In which pair of substances does the first underlined atom have a lower oxidation number than the second?

A. NH₃OH⁺, NH₄⁻ (N is underlined)

B. H₂O, H₂O₂ (O is underlined)

C. SO₃, SO₄²⁻ (S is underlined)

D. HCHO, C (C is underlined)

Solution

In determination of the oxidation number of an atom in a compound, we first name the unknown oxidation number x.

Then, the total oxidation number of the atoms in the compound is equal to the charge of on the compound (or radical).

So, elements in their neutral state have no charge and no oxidation number.

A. NH₃OH⁺, NH₄⁻ (N is underlined)

N in NH₃OH⁺

Oxidation number of N = x

Oxidation number of H = +1

Oxidation number of O = -2

x + (3×+1) + (-2) + (+1) = +1

x - 3 - 2 + 1 = 1

x = +5

N in NH₄⁻

Oxidation number of N = x

Oxidation number of H = +1

x + (4×1) = -1

x + 4 = -1

x = -1 - 4 = -5

First underlined element has a greater oxidation number than the second. So, this doesn't qualify.

B. H₂O, H₂O₂ (O is underlined)

O in H₂O

Oxidation number of H = +1

Oxidation number of O = x

(2×1) + x = 0

2 + x = 0

x = -2

H₂O₂

Oxidation number of H = +1

Oxidation number of O = x

(2×1) + (2×x) = 0

2 + 2x = 0

2x = -2

x = (-2/2) = -1.

First underlined element has a lower oxidation number than the second. So, this qualifies.

C. SO₃, SO₄²⁻ (S is underlined)

S in SO₃

Oxidation number of S = x

Oxidation number of O = -2

x + (3×-2) = 0

x - 6 = 0

x = +6

SO₄²⁻

Oxidation number of S = x

Oxidation number of O = -2

x + (4×-2) = -2

x - 8 = -2

x = 8 - 2 = +6

First underlined element has the same oxidation number as the second. So, this doesn't qualify.

D. HCHO, C (C is underlined)

C in HCHO

Oxidation number of H = +1

Oxidation number of C = x

Oxidation number of O = -2

+1 + x + 1 - 2 = 0

x = 0

C in C

Oxidation number of C = x

x = 0

First underlined element has the same oxidation number as the second. So, this doesn't qualify.

Hope this Helps!!!

Answer:

When someone spends a long period in a closed well, their ability to breathe becomes more difficult due to the high concentration of carbon dioxide that has accumulated, which could result in death.

can I please get the five points :)

Answer:

When external portable containers are used for transfer, the container must be evacuated at least 27 in of vacuum (75 mm Hg absolute pressure) prior to transfer of the recycled refrigerant.

Explanation:

Answer:

AlCl3 + HCl ===> AlCl4 +H-

Answer:

See explanation

Explanation:

Surface area has to do with the number of solid particles that are exposed at a given time and is capable of colliding with other reactant particles. When more surface area is exposed for reaction, then it means that more particles are likely to collide with each other leading to faster chemical reaction rates. When few particles are exposed for reaction (low surface area) then less collisions occur and the rate of reaction is decreased.

Similarly, concentration refers to the amount of substance present. The greater the amount of substance present, the greater the likelihood of collision between particles and the greater the rate of reaction and vice versa.

Answer:

Dung dịch nào sau đây chỉ chứa các ion (bỏ qua sự điện li của nước, các chất điện li mạnh phân li hoàn toàn)?

A. HBr, Na2S, Mg(OH)2, Na2CO3.

B. H2SO4, NaOH, NaCl, HF.

C. HNO3, H2SO4, KOH, K2SiO3.

D. Ca(OH)2, KOH, CH3COOH, NaCl.

Answer:

Answer:

B. It's dissociation is a reversible reaction

Explanation:

NH3 is a weak alkali that does not dissociate fully into its solution. Only parts of the ammonia takes part in the dissociation process.

NH3 + H20 —> NH4+ + OH-

This dissociation is reversible which means the reactants can be formed from the product gotten from the dissociation

It has a high pH due to its basic nature. It also has a Low concentration of H+ ions and not all the OH- ions are released.

Answer:

The acid will react with the metal, causing hydrogen gas and salt to form from it.

Answer:

The retention factor would be high

Explanation:

The retention factor can be affected by the temperature, or affected by the composition of the solvent, when the FM are liquid.

Heptene is a derivative of the distillation of oil, it is a chemical compound that is made up of seven carbons, that is why it begins with the prefix hept.

An exothermic reaction releases 325 kJ. 1359.8 kJ energy is this in calories.

An exothermic reaction is a chemical reaction that releases heat energy into the surroundings. During an exothermic reaction, the products of the reaction have less potential energy than the reactants, and the excess energy is released in the form of heat.

One calorie is defined as the amount of energy required to raise the temperature of one gram of water by one degree Celsius.

One joule is defined as the amount of energy required to apply a force of one newton over a distance of one meter.

1 cal = 4.184 J

1 cal = 0.004184 kJ

325000 cal = x kJ

0.004184/ 1 = x / 325000

x = 1359.8 kJ

Thus, 1359.8 kJ energy is this in calories.

To learn more about an exothermic reaction, follow the link;

brainly.com/question/10373907

#SPJ1

Answer:

False

Explanation:

The reaction rate increases if the temperature also increases, as does the concentration of ractives or the presence of catalysts.

The reaction rate talks about how reagents are converted into products as a function of time, this process can take less or more depending on the factors to which the reaction is exposed.

The increasing temperature generates an increase in the kinetic energy of the particles, promoting their proximity and their reaction between them to be able to give the final product, so a faster reaction occurs, which is why it has promoted when the particles collide.

To solve molality use the following equation: ΔTb = Kb x molality.

Molality (m) is a measure of the concentration of a solution and is defined as the number of moles of solute per kilogram of solvent. To calculate molality, follow these steps:

To find the boiling point of the solution (BP solutions), the boiling point elevation constant (Kb) of the solvent and the molality of the solution. With these values, we can use the following equation:

ΔTb = Kb x molality

where ΔTb is the boiling point elevation, Kb is the boiling point elevation constant of the solvent, and molality is the molal concentration of the solution.

Find out more on STP here: https://brainly.com/question/29796637

#SPJ1

\(\\ \tt\hookrightarrow Speed=\dfrac{Distance}{Time}\)

\(\\ \tt\hookrightarrow Speed=\dfrac{6}{2}\)

\(\\ \tt\hookrightarrow Speed=3m/s\)

Answer:

Given, Distance travelled(d)=6m

Time taken(t)=2sec

Speed(s)=?

We know that,

\( \purple {speed(s) = \frac{distance \: travelled(d)}{time \: taken(t)}} \)

\( \purple{speed(s) = \frac{6m}{2sec} }\)

\( \purple{speed(s) = 3 m /s}\)