carbon tetrachloride has been widely used in the cleaning industry in fire extinguishers and refrigerated. construct an explanation of how carbon and chlorine combine to form carbon tetrachloride

The molarity of the K2CrO4 solution would be 0.001254 M.

The molarity of a solution is defined as the number of moles of solute per liter of solution. To calculate the molarity of the K2CrO4 solution, we need to first determine the number of moles of K2CrO4 present in the 184.6 mg sample.

Calculate the number of moles of K2CrO4:

The molar mass of K2CrO4 is 294.19 g/mol.

mass of K2CrO4 = 184.6 mg = 0.1846 g

number of moles = mass/molar mass

number of moles = 0.1846 g / 294.19 g/mol = 0.000627 mol

Calculate the volume of the solution in liters:

We are given that the solution is made up to a final volume of 500.0 mL. To convert milliliters to liters, we divide by 1000.

volume = 500.0 mL ÷ 1000 mL/L = 0.500 L

Calculate the molarity:

Molarity = number of moles / volume of solution

Molarity = 0.000627 mol / 0.500 L = 0.001254 M

Therefore, the molarity of the K2CrO4 solution is 0.001254 M.

More on molarity can be found here: https://brainly.com/question/8732513

#SPJ1

Calculate the molarity. A 184.6-mg sample of K2CrO4, is dissolved in enough water to make 500.0 mL of solution.

Gas mixes can be regarded as ideal gas mixtures for the purpose of calculation at low pressure or high temperature.

The ability of the gas particles to interact with one another depends on the system's temperature and pressure, and these interactions severely limit the precision of the Ideal Gas Law.Because the volume occupied by the gas is relatively small and the intermolecular distance between the molecules shrinks at low temperature and high pressure, the ideal gas law fails in these conditions. Real gases have lower pressure than the ideal gas equation because attraction forces between molecules do occur in real gases. The van der Waals equation takes this condition into account. As it is assumed that perfect gas molecules have no volume, the volume that they can move in is always the same as the volume of the container. In contrast, the volumes of the molecules in a genuine gas are minuscule but measurable.

Learn more about gas mixtures here :

https://brainly.com/question/29419487

#SPJ4

Answer:

yes because tissues take long to survive the aeedlings

The correct name for FeO is iron(II) oxide. Iron(II) oxide indicates that the iron ion in the compound has a +2 oxidation state.

The formula FeO consists of one iron atom with a +2 charge and one oxygen atom with a -2 charge. Therefore, the Roman numeral (II) is used to denote the oxidation state of iron.

Iron(II) oxide is commonly known as ferrous oxide. It is a black, powdery substance that occurs naturally as the mineral wüstite. It is used in various applications, including as a pigment in ceramics and as a catalyst in chemical reactions. Iron(II) oxide can also be produced by the reduction of iron(III) oxide with carbon monoxide at high temperatures.

It's worth noting that iron(III) oxide (Fe2O3) is another common iron oxide, commonly known as ferric oxide or rust. Iron monoxide (FeO) is not an accurate name for the compound since it implies a single atom of oxygen, which is not the case. Similarly, iron(I) oxide does not represent the correct oxidation state for iron in FeO.

Learn more about FeO here:

https://brainly.com/question/14040243

#SPJ11

The correct statement about pericyclic reactions is:

In pericyclic reactions, all bonds are broken and formed in a single step.

Pericyclic reactions are a class of organic reactions characterized by the simultaneous breaking and forming of multiple bonds in a concerted manner, meaning that all bond changes occur in a single step. This is in contrast to stepwise reactions where bonds are broken and formed in separate steps.

In a pericyclic reaction, the reactants rearrange their electrons in a concerted fashion, leading to the formation of new bonds and the breaking of existing bonds. This concerted process occurs through the overlap of molecular orbitals, allowing for the efficient transfer of electrons.

Pericyclic reactions are concerted reactions in which the breaking and forming of bonds occur simultaneously in a single step. They do not involve multiple steps or intermediates. The transition state in a pericyclic reaction is cyclic, not acyclic.

Learn more about pericyclic reactions from the link given below.

https://brainly.com/question/33440345

#SPJ4

The sample has approximately 0.000155 moles.

To determine the number of moles in a sample of a substance given the number of particles, we need to use Avogadro's number, which states that there are\(6.022 x 10^23\) particles in one mole of a substance.

Using this conversion factor, we can calculate the number of moles in the sample as follows:

\(9.3541 x 10^13\)particles x 1 mole / \(6.022 x 10^23\) particles ≈ 0.000155 moles

Therefore, the sample has approximately 0.000155 moles.

It's important to note that the number of particles in a sample does not depend on the substance's molar mass or atomic weight, but rather on the number of atoms, molecules, or ions present in the sample. Knowing the number of moles in a sample can be useful in determining other properties of the substance, such as its mass or volume.

To know more about Avogadro's number refer to-

https://brainly.com/question/28812626

#SPJ11

Answer:

Thanks!!!

Explanation:

Answer:

true

Explanation:

Part A: HC₂H₃O₂ + H⁺ → H₂C₂H₃O₂⁻

The equation shows how the buffer neutralizes added acid. The HC₂H₃O₂ acts as a weak acid and accepts the added H⁺ to form the conjugate base, H₂C₂H₃O₂⁻, which prevents the pH of the solution from decreasing significantly.

Part B: H₂C₂H₃O₂⁻ + OH⁻ → HC₂H₃O₂ + H₂O

The equation shows how the buffer neutralizes added base. The H₂C₂H₃O₂⁻ acts as a weak base and accepts the added OH⁻ to form the weak acid, HC₂H₃O₂, which prevents the pH of the solution from increasing significantly.

Part C:

First, we calculate the pKa of HC₂H₃O₂ as follows:

pKa = -log(Ka) = -log(1.8×10⁻⁵) = 4.74

Then, we can use the Henderson-Hasselbalch equation to calculate the pH of the buffer:

pH = pKa + log([C₂H₃O₂⁻]/[HC₂H₃O₂])

pH = 4.74 + log(0.45/0.25) = 4.91

Therefore, the pH of the buffer is 4.91. The buffer contains a weak acid (HC₂H₃O₂) and its conjugate base (C₂H₃O₂⁻) in nearly equal concentrations, which makes it resist changes in pH when small amounts of acid or base are added.

Learn more about Henderson-Hasselbalch equation here:

https://brainly.com/question/13423434

#SPJ1

The glomerular filtration barrier allows plasma and its dissolved substances to be filtered while restricting the passage of large structures, such as formed elements.

The glomerular filtration barrier is located in the kidneys and is responsible for filtering blood plasma to form urine. It consists of three layers:

Fenestrated endothelium: the first layer of the glomerular filtration barrier, composed of a single layer of specialized cells with large pores (fenestrations) that allow small molecules to pass through.

Basement membrane: the second layer, composed of a dense network of proteins that form a physical barrier, preventing the passage of larger molecules such as proteins and blood cells.

Podocytes: the third layer, consisting of specialized cells with finger-like projections called foot processes. The foot processes interlock with one another, forming small filtration slits that further restrict the passage of larger molecules.

Together, these three layers form the glomerular filtration barrier, which allows small molecules such as water, electrolytes, and waste products to pass through, while restricting the passage of larger molecules such as proteins and blood cells.

For more question on glomerular filtration barrier click on

https://brainly.com/question/15373774

#SPJ11

The number of dots would be found in the Lewis dot structure for the compound  \(C_{2} H_{3}Cl_{3}\)  is 32.

To determine the number of dots in the Lewis dot structure for the compound \(C_{2} H_{3} Cl_{3}\) , we first need to know the structure. In the Lewis dot structure, each hydrogen atom has two dots representing two valence electrons and each chlorine atom has six dots representing six valence electrons. The carbon atoms each have four dots representing four valence electrons on their own atoms, and one additional dot on the double bond between them. Therefore, the total number of dots in the Lewis dot structure for the compound \(C_{2} H_{3} Cl_{3}\)  is:
(2 x 4) + (3 x 2) + (3 x 6) = 8 + 6 + 18 = 32

Learn more about Lewis dot structure here :

https://brainly.com/question/20300458

#SPJ11

There would be 32 dots in the Lewis dot structure for the compound \(C_{2}H_{3}Cl_{3}\).

To determine the number of dots in the Lewis dot structure for the compound \(C_{2}H_{3}Cl_{3}\)., we need to calculate the total number of valence electrons for each element in the compound.

1. Identify the number of valence electrons for each element:
  - Carbon (C) has 4 valence electrons.
  - Hydrogen (H) has 1 valence electron.
  - Chlorine (Cl) has 7 valence electrons.

2. Calculate the total number of valence electrons in the compound:
  - There are 2 carbon atoms, so 2 * 4 = 8 valence electrons for carbon.
  - There are 3 hydrogen atoms, so 3 * 1 = 3 valence electrons for hydrogen.
  - There are 3 chlorine atoms, so 3 * 7 = 21 valence electrons for chlorine.

3. Add up the total number of valence electrons:
  - 8 (from carbon) + 3 (from hydrogen) + 21 (from chlorine) = 32 valence electrons.

To know more about Lewis Structures:

https://brainly.com/question/12792895

#SPJ11

An imbalance in the lonization energy leads to the distribution of charge in molecules. A polar molecule is one that has an unequal distribution of charges, causing it to have a positive end and a negative end.

In the case of an uneven distribution of charges, which molecules are present?

To learn more about Molecules refer to:

https://brainly.com/question/475709

#SPJ1

Vm will be close the Eion which has the highest conductance at the point in the AP.

Vm, the membrane potential of a neuron, will be closest to the equilibrium potential (Eion) of the ion with the highest conductance at that point in the action potential.

Conductance is a measure of how easily ions can move across the membrane, and the ion with the highest conductance at a given point in the action potential will have the greatest influence on the membrane potential.

At rest, the membrane potential is close to the equilibrium potential of potassium (EK) because the resting conductance of potassium is high. During depolarization, the conductance of sodium (ENa) increases, and the membrane potential approaches the equilibrium potential of sodium.

During repolarization and hyperpolarization, the conductance of potassium increases again, and the membrane potential returns to EK.

To know more about conductivity:

https://brainly.com/question/12260974

#SPJ4

Answer:

Growing a sunflower that is 10 feet tall is very impressive.

Explanation:

Hope it helps

Wine was produced 37 years ago (1984 as usual year 15,2021) that is shown in the calculations below.

Reaction rate is calculated using the formula rate = Δ[C]/Δt, where Δ[C] is the change in product concentration during time period Δt. The rate of reaction can be observed by watching the disappearance of a reactant or the appearance of a product over time.

The time can be represented as follows:

t= 2.303\∧ log A0/A

∧= 0.693/t 1/2

The rate of a reaction is proportional to the reciprocal of the time taken. Rate α 1 time Rate is inversely proportional to time. Units: s-1, min-1 etc.

The given parameters are as follows:

t1/2=12.3

A0=5.5

A=0.688

t= 2.303/(0.693/12.3) log (5.5/0.688)

t=36.9

t=37 years

Thus, wine was produced 37 years ago (1984 as usual year 15,2021)

To learn more about rate of reaction check the link below:

https://brainly.com/question/24795637

#SPJ4

Answer:

This is what we're given:

P (pressure), which is 1.95 atm

V(volume), which is 11.30 L.

n(number of moles), which is 0.554 moles of helium gas.

We have to find T, or temperature. To do this, we'll need to use the Ideal Gas Law, which is:

\(PV = nRT\)

Rearranging this equation to get temperature on one side, we get:\\ \(T =\frac{PV}{nR}\\ \\

Pressure \: is \: in \: atm \: and \\ volume \: is \: in \: L . \: This \: tells \\ \: us \: that \: we'll \: need \: to \: \\ use \: the \: value \: of \: 0.08206 L atm/K \: mol \: for \: R \: the \: ideal \: gas \: constant.\\ \\ Plugging in all of the values, we can solve for temperature:

\(T =\frac{PV}{nR}\\ \\

T = (1.95 atm × 12.30 L) ÷

(0.654 mol × 0.0820575LatmK−1)

mol

\(T =\frac{PV}{nR} \\ \\

T =

\frac{ (1.95 atm × 12.30 L)}{(0.654 mol × 0.0820575LatmK−1)} \)

\(T = 447 K \)

Boyle’s Law (PV law)

a. Volume of a GIVEN MASS OF GAS (mass is fixed) is inversely proportional to the Absolute pressure of the gas at constant Temperature.

b. Absolute pressure means pressure that is measured relative to Vacuum. Vacuum = 0 pressure. Thus, absolute pressure is measured relative to absolute 0.

c. Another way : PV = Constant. Thus, if you measure the Pressure and Volume at 3 different times, then P1 V1 = P2 V2 = P3 V3. In order to keep the product as a constant, whenever Pressure increases, the Volume will decrease.

Charle’s Law (VT Law)

a. Volume of a GIVEN MASS OF GAS (mass is fixed) is directly proportional to the Absolute Temperature at constant pressure.

b. When you measure the Temperature of a body on a scale in which 0 corresponds to Absolute 0, then the measured temperature is Absolute Temperature. Put simply, this refers to the Kelvin scale.

c. Absolute 0 is the temperature at which objects are at their lowest possible energy (Since Temperature is a measurement of the Kinetic energy of the atoms).

Gay Lussac Law (PT Law)

a. Pressure of a GIVEN AMOUNT OF MASS (mass is fixed) at constant volume is directly proportional to the absolute Temperature (that is, Kelvin Temperature).

b. Another way : P / T = Constant. P1 / T1 = P2 / T2 = P3 / T3.

Avogadro’s law (Vn law)

a. All the above laws were talking about relationships at fixed mass. So we needed a law which would relate mass with other quantities. This is Avogadro’s law.

b. It is a very straight forward law, if the amount of gas in a Container increases (that is, if the amount of matter increases), then the Volume of the gas increases which is very straight forward.

c. Volume is directly proportional to n (number of moles) or V/n = Constant.

Considering the Ideal Gas Law, at 485.05 °K 0.554 moles of helium gas will occupy 11.30 liters at 1.95 atmospheres.

On the other side, the 4 gas laws are Gay Lussac's law, Boyle's law, Charles' Law and Avogadro's law.

Ideal gases are a simplification of real gases that is done to study them more easily. It is considered to be formed by point particles, do not interact with each other and move randomly. It is also considered that the molecules of an ideal gas, in themselves, do not occupy any volume.

The pressure, P, the temperature, T, and the volume, V, of an ideal gas, are related by a simple formula called the ideal gas law:

P×V = n×R×T

where:

In this case, you know:

Replacing in the Ideal Gas Law:

1.95 atm×11.30 L = 0.554 moles× 0.082 \(\frac{atm L}{mol K}\)× T

Solving:

T= (1.95 atm×11.30 L) ÷ (0.554 moles× 0.082 \(\frac{atm L}{mol K}\))  

T= 485.05 K

Finally, at 485.05 °K 0.554 moles of helium gas will occupy 11.30 liters at 1.95 atmospheres.

Gay Lussac's law states that the pressure of the gas is directly proportional to its temperature: when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, gas pressure decreases.

Boyle's law says that volume is inversely proportional to pressure: if pressure increases, volume decreases; while if the pressure decreases, the volume increases.

Charles' Law that the volume is directly proportional to the temperature of the gas: if the temperature increases, the volume of the gas increases; while if the temperature of the gas decreases, the volume decreases.

Avogadro's law states that the volume is directly proportional to the amount of gas: if the amount of gas increases, the volume will increase, while if the amount of gas decreases, the volume will decrease.

In summary, the 4 gas laws are Gay Lussac's law, Boyle's law, Charles' Law and Avogadro's law.

Learn more about the gas laws:

The final temperature of the mixture when no heat loss to the surroundings is equal to 69.57 °C

The specific heat capacity can be defined as the amount of heat required to increase the temperature in 1 unit of substance by 1° Celcius.

The specific heat capacity can be expressed in the form of the mentioned formula below:

Q = mSΔT

The specific heat capacity of the water, S = 4.184 J/g°C

The heat lost by water = heat gained by the ice

Heat lost by water = heat gained by the ice + heat increased by the water

m₁S₁ (T₂ - T₁) = m₂L + m₂S₂ (T₂ - T₁)

103.5 × 4.18 × (73- T) = 13.1  × (2.03) + 5 × 4.18 × (T-0)

31582 - 432.63 T = 26.59 + 20.9 T

453.53 T = 31555

T = 69.57 °C

Learn more about specific heat capacity, here:

brainly.com/question/28302909

#SPJ1

The algae bead could carry out photosynthesis more in the presence of light, which caused the CO2 indicator to become more alkaline.

Describe alkaline.

The meaning of alkaline is: having the characteristics of the an alkali or alkaline metal; being an alkali; or being related to one: a solution that is basic, in particular, and has a pH greater than 7 having the characteristics of a hydroxide or liquid metal; being an alkali; or being related to one: a solution that is particularly basic: whose pH is greater than 7

What characteristics do alkalis have?

Alkali properties. Because fatty acids in skin are saponified, alkaline bases have a slimy or sticky feel to the touch. Alkalis are all Arrhenius bases because they dissolve in water to produce hydroxide ions (OH-). Some alkalis, like barium carbonate, are typically water-soluble.

To know more about alkalis visit:

https://brainly.com/question/11584594

#SPJ4

The enthalpy of the reactions include:

Using the heat of formation values listed below:

ΔHf°(Si) = 0 kJ/mol

ΔHf°(SiF₄) = -1613 kJ/mol

ΔHf°(F₂) = 0 kJ/mol

ΔHf°(H₂O) = -286 kJ/mol

ΔHf°(SO) = 248 kJ/mol

ΔHf°(H₂SO₄) = -814 kJ/mol

ΔHf°(KOH) = -424 kJ/mol

ΔHf°(K₂O₂) = -496 kJ/mol

ΔHf°(O₂) = 0 kJ/mol

ΔHf°(Fe₃O₄) = -1118 kJ/mol

ΔHf°(HCl) = -92 kJ/mol

ΔHf°(FeCl₂) = -341 kJ/mol

ΔHf°(FeCl₃) = -399 kJ/mol

The enthalpy of each reaction is:

(a) ΔH°rxn = [ΔHf°(Si) + 2ΔHf°(F₂)] - ΔHf°(SiF₄)

ΔH°rxn = [0 + 2(0)] - (-1613) kJ/mol

ΔH°rxn = 1613 kJ/mol

(b) ΔH°rxn = [ΔHf°(Si) + 2ΔHf°(F₂)] - ΔHf°(SiF₄)

ΔH°rxn = [0 + 2(0)] - (-1613) kJ/mol

ΔH°rxn = 1613 kJ/mol

(c) ΔH°rxn = [ΔHf°(H₂SO₄)] - [ΔHf°(SO) + ΔHf°(H₂O)]

ΔH°rxn = (-814) - [248 + (-286)] kJ/mol

ΔH°rxn = -276 kJ/mol

(d) ΔH°rxn = [6ΔHf°(KOH) + ΔHf°(O₂)] - [3ΔHf°(K₂O₂) + 3ΔHf°(H₂O)]

ΔH°rxn = [6(-424) + 0] - [3(-496) + 3(-286)] kJ/mol

ΔH°rxn = -1296 kJ/mol

(e) ΔH°rxn = [2ΔHf°(FeCl3) + ΔHf°(FeCl2) + 4ΔHf°(H₋O)] - [ΔHf°(Fe₃O₄) + 8ΔHf°(HCl)]

ΔH°rxn = [2(-399) + (-341) + 4(-286)] - [(-1118) + 8(-92)] kJ/mol

ΔH°rxn = -203 kJ/mol

Find out more on enthalpy here: https://brainly.com/question/16985375

#SPJ1

The enthalpy change when 8.50 L of ozone at a pressure of 1.00 atm and 25°C reacts with 12.00 L of nitric oxide at the same initial pressure and temperature is -277.5 kJ/mol.

The enthalpy change when 8.50 L of ozone at a pressure of 1.00 atm and 25°C reacts with 12.00 L of nitric oxide at the same initial pressure and temperature can be calculated by the given equation. The balanced equation for the reaction is:2O3(g) + 2NO(g) → 2NO2(g) + 3O2(g)The enthalpy change for the given reaction can be determined using Hess’s law. Hess’s law states that the enthalpy change of a reaction is independent of the route taken, provided that the initial and final conditions are the same.

Since the given reaction can be expressed as a sum of a series of known reactions, Hess’s law can be used to calculate the enthalpy change.Using the given data, the enthalpy change for the reaction can be calculated as follows:δH° = 2 × [ΔH°f(NO2(g))] + 3 × [ΔH°f(O2(g))] - 2 × [ΔH°f(O3(g))] - 2 × [ΔH°f(NO(g))]δH° = 2 × [33.85 kJ/mol] + 3 × [0 kJ/mol] - 2 × [142.2 kJ/mol] - 2 × [90.4 kJ/mol]δH° = - 277.5 kJ/mol

To know more about enthalpy change visit:-

https://brainly.com/question/28039996

#SPJ11

Answer: C

Explanation: The evaporation rate depends on the exposed surface of liquid as long as both glasses stay at the same temperature. Since both glasses have the same surface area, they should both evaporate at the same rate.

Answer:

About 1.48 M.

Explanation:

The formula for molarity is mol/L.

So firstly, you must find the amount of moles in 250 grams of NaCl.

I do this by using stoichiometry. First, I find how nany grams are in a single mole of NaCl. This is around 58.44 grams/mole. Now that I know this, I can now use a stoich table. (250 g NaCl * 1 mol NaCl / 58.44 g NaCl). I plug this into my calculator.

I get that 250 grams of NaCl is equal to about 4.28 moles.

Now I just plug into the formula!

4.28 moles/2.9 L = about 1.48

I've attached a picture of my personal notes below which shows work I have done in similar equations.

Answer:

6.19g H2

Explanation:

34.8g NH3  |   1 mol NH3/17.04 g NH3  | 3 mol H2/2 mol NH3   | 2.02 g H2/ 1mol H2

Answer:

Mass of MgF₂ formed = 40.5 g

Explanation:

Given data:

Mass of NaF = 55 g

Mass of MgF₂ formed =  ?

Solution:

Chemical equation:

2NaF  +  Mg      →     MgF₂ + 2Na

Number of moles of NaF:

Number of moles = mass/molar mass

Number of moles = 55 g / 41.98 g/mol

Number of moles = 1.3 mol

now we will compare the moles of sodium fluoride with magnesium fluoride.

                     NaF       :          MgF₂

                       2          :             1

                     1.3          :        1/2×1.3 =  0.65 mol

Mass of magnesium fluoride:

Mass = number of moles × molar mass

Mass = 0.65 mol × 62.3 g/mol

Mass = 40.5 g

Answer

-52.2 Joules

Explanation

Given that;

Mass of krypton, m = 12.3 g

Temperature change, ΔT = 22.2°C - 39.3°C = -17.1°C

The specific heat of gaseous krypton, c = 0.248 J/g°C.

What to find:

The energy change, Q.

Step-by-step solution:

The energy change, Q can be determined using:

Q = mcΔT

Putting the values of the given parameters into the formula, this yields:

Therefore the energy change = -52.2 Joules

There are approximately 56.26 grams of zinc in 1.94×10³ kg of the industrial waste water. This is the amount of zinc that could be recovered from this amount of waste water.

To calculate the amount of zinc that could be recovered from the industrial waste water, we need to use the given concentration of zinc and the amount of waste water.

First, we need to convert the given concentration of 29.0 ppb (parts per billion) to grams per kilogram (g/kg).

1 ppb = 1 microgram (μg) per kilogram (kg)
1 μg = 0.000001 g

Therefore, 29.0 ppb = 29.0 μg/kg = 0.000029 g/kg

Next, we need to determine how many grams of zinc are in 1.94×10³ kg of waste water.

0.000029 g of zinc per 1 kg of waste water = x g of zinc per 1.94×10³ kg of waste water

x = 0.000029 g x 1.94×10³ kg
x = 56.26 g

Therefore, there are approximately 56.26 grams of zinc in 1.94×10³ kg of the industrial waste water. This is the amount of zinc that could be recovered from this amount of waste water.

To know more about zinc, refer

https://brainly.com/question/1594082

#SPJ11

Answer:

ammonia molecules. Similar factors may be derived for any pair of substances in any chemical equation. Example 4.8. Moles of Reactant Required in a Reaction.

Explanation:

Answer:

closely related

Explanation: