16.8cm to millimeters​

Answer:

800.209

Explanation:

Answer:

6.68 x 10^-4

Explanation:

131g ÷ 261.337g/mol = 0.5012685 moles

0.5012685 moles ÷ 750.0 liters =

0.5012685÷ 750.0=0.000668358

6.68 x 10^-4

The solubility of\(LaF_3\) in water is 3.04 x 10^-6 mol/L.

The solubility of \(LaF_3\) in water can be determined using the Ksp expression:

\(Ksp = [La^{3+}][F^-]^3\)

Where \([La^{3+}]\)and \([F^-]\) are the molar concentrations of the \(La^{3+}\) and \(F^-\) ions in the solution.

Since each \(LaF_3\) formula unit dissociates into one \(La^{3+}\) ion and three \(F^-\) ions, the molar solubility of \(LaF_3\) can be represented as x. Thus, the molar concentrations of \(La^{3+}\) and \(F^-\) ions in the solution can be written as x and 3x, respectively.

Substituting these values into the Ksp expression gives:

Ksp = x*(3x)^3 = 27x^4

Now, we can solve for x:

x = (Ksp/27)^(1/4)

= (2 x 10^-19 / 27)^(1/4)

= 3.04 x 10^-6 mol/L

For more question on solubility click on

https://brainly.com/question/24057916

#SPJ11

We can say that Javier is right because the reactivity of the elements tends to decrease from left to right.

The periodic table is an arrangement of the elements in order of increasing atomic number. Let us note that the modern periodic law states that the properties of the elements is a periodic function of their  atomic numbers .Thus the atomic numbers of the elements tends to increase from left to right in the periodic table as we can see in the image that have been attached to the question above.

Now, we know that the reactivity of the elements also tend to decrease from left to right. This is because, the heavier the element, the less reactive that the element is. Recall that every period that we can find in the periodic table tends to end up with a non reactive noble gas element.

Learn more about periodic table:https://brainly.com/question/11155928

#SPJ1

The 5 moles of water is equal to 90.075 grams of water and 220 J of energy is equal to 52.636 calories.

To change moles of water to grams, it is required to find the molar mass of the substance. The molar mass of water (H2O) is equal to 18.015 grams/mol.

To change 5 moles of water to grams, by using the following calculation:

5 moles × 18.015 grams/mol = 90.075 grams of water

Thus, 5 moles of water is equal to 90.075 grams of water.

To change joules to calories,  by using the conversion factor:

1 cal = 4.184 J.

To change 220 J of energy to calories, by using the following calculation:

220 J ×  (1 cal / 4.184 J) = 52.636 cal

Thus, 220 J of energy is equal to 52.636 calories.

Learn more about water, here:

https://brainly.com/question/29285510

#SPJ1

Answer:

No, We cannot change a gravitational field directly. Gravity is due or caused by the energy in objects with mass. ... Either way, once a particle, it is an object thus a source of gravitational potential.

Hope it helps,

Please mark me as the brainliest

Thank you

there are no current practical outer space applications of artificial gravity for humans due to concerns about the size and cost of a spacecraft necessary to produce a useful centripetal force comparable to the gravitational field strength on Earth.

The equation  in the question is: H+H → H + H Complete the equation by filling in the missing parts. missing part is  1 → H+H-2 → →3 → He.

The atomic number of hydrogen is 1, which means it has only one proton in the nucleus and one electron in its shell. Two hydrogen atoms react with each other to form helium. Helium has 2 protons and 2 neutrons in its nucleus and two electrons in its shell. Therefore, the equation is:

H + H → HeIt can be seen that:1. H + H (Reactants)

2. → (Yields or Reacts to form)

3. He (Product)Therefore, the tiles will be arranged as shown below: 1 → H+H-2 → →3 → He

For more question atomic number

https://brainly.com/question/16858932

#SPJ8

Answer:

B the weight of the passengers

To name Type 2 ionic compounds such as AuCl₃, you need to use the Stock system or Roman numeral system to indicate the oxidation state of the cation. Some steps are; Identify the cation, Determine the charge, Write the name, and combine two names.

Here are the steps to name AuCl₃; Identify the cation and anion. In this case, the cation is Au³⁺ and the anion is Cl⁻.

Determine the charge on the cation by using the anion's charge and balancing the charges to zero. Since Cl⁻ has a charge of -1 and there are three Cl⁻ ions in the compound, the total negative charge is -3. Therefore, the Au³⁺ ion has a charge of +3.

Write the name of the cation first, followed by the name of the anion with an -ide ending. Since the cation is Au³⁺, we use the name "gold(III)" to indicate the oxidation state of +3. The anion is Cl⁻, so we add the -ide ending to get "chloride".

Combine the two names to get the compound's name: "gold(III) chloride".

Therefore, the name of the Type 2 ionic compound AuCl₃ is "gold(III) chloride".

To know more about ionic compounds here

https://brainly.com/question/9167977

#SPJ1

Answer:

it should be rinsed to clean the glassware

pKa value =4.76Ka

=1.73×10 −5 !!    PH=4−PKa=14−4.76=9.24 for a weak monoprotic acid is titrated with 0.100 M NaOH. It requires 50.0 mL of the NaOH solution to reach the equivalence point. After 25.0 mL of the base is added, the pH of the solution is 3.52.

One way to describe an acid's potency is by its pKa value. The acid dissociation constant, or pKa, is the negative log of the pKa value. A stronger acid is indicated by a lower pKa value. In other words, a lower value means that the acid dissociates in water more completely.

The logarithm of Ka's negative value is denoted as pKa. The logarithmic inverse of the H+ concentration is pH. Acidity indication. An acid's pKa value tells you if it's a strong acid or a weak acid. The pH scale shows how acidic or alkaline a system is.

To learn more about pka value please visit-
https://brainly.com/question/13178964
#SPJ1

Answer:

0.31 mole

Explanation:

The following data were obtained from the question:

Mass of SF6 = 45.0 g

Number of mole of SF6 =..?

Next, we shall determine the molar mass of SF6.

This can be obtained as follow:

Molar mass of SF6 = 32 + (19×6)

Molar mass of SF6 = 32 + 114

Molar mass of SF6 = 146 g/mol

Finally, we shall determine the number of mole in 45 g of SF6 as follow:

Molar mass of SF6 = 146 g/mol

Mass of SF6 = 45.0 g

Number of mole of SF6 =..?

Number of mole = mass /Molar mass

Number of mole of SF6 = 45 /146

Number of mole of SF6 = 0.31 mol

Therefore, 0.31 mol is present in 45 g of SF6.

The fact that the infrared thermometers used in medical research were first intended to detect the temperature on Mars has had an impact on that field of study.

Technology for use in outer space, in aviation or other operations outside of Earth's atmosphere, for things like spaceflight, space exploration, and Earth observation, is referred to as space technology.

By enabling high-speed data transport with the development of the internet, enabling research of global natural phenomena, and enabling environmental monitoring, space technology started to be employed for telecommunications and the environment.

To know more about thermometers visit:-

https://brainly.com/question/13294753

#SPJ1

Answer:

CH4+2O2→CO2+2H2O

Moles of oxygen=3232=1

Moles of carbon dioxide=4422=0.5

Moles of water=1818=1

1 mole of methane reacts with 2 moles of oxygen to give 1 mole of CO2 and 2 moles of water so 0.5 mole of methane will be required which is equal to 0.5×16=8g.

Explanation:

8g

Answer:

C:RS₂ have the properties of both  R and S.

Explanation:

A compound formed between the two elements R and S to form RS₂ will have properties that reflects both R and S.

This is chemical change and the atoms combine will influence how the the product is formed.

Compounds are substances that are composed of two or more kinds of atoms joined together in a definite grouping.

Explanation:

Percent by mass is mass of the solute in 100 g of the solution.

So in this case:

mass of solute = 20.1

mass of solution = 513

The expression for calculating the percentage by mass is: % (m/m) = (mass of solute) / (mass of solution) x 100.

So:

% m/m = (20.1/513)*100

% m/m = 3.92%

Answer: % m/m = 3.92%

These substances have dispersed particles that are large enough to scatter light, making the beam visible. Therefore, out of the options provided, a mixture that scatters light is an example of a colloid. Option B)

A colloid is a type of mixture in which particles are dispersed throughout a medium, creating a homogeneous appearance. Unlike solutions, where the particles are completely dissolved, and suspensions, where the particles settle out, colloids have particles that are larger than those in solutions but smaller than those in suspensions. One characteristic of colloids is that they can scatter light due to the size of the particles. This scattering of light is known as the Tyndall effect. Examples of colloids include milk, fog, and aerosol sprays. These substances have dispersed particles that are large enough to scatter light, making the beam visible. Therefore, out of the options provided, a mixture that scatters light is an example of a colloid. Therefore option B) is correct

For more question on mixture

https://brainly.com/question/24647756

#SPJ8

Note Complete Question

which is an example of a colloid?

a mixture that settles out,

b mixture that scatters light,

c mixture that is separated by filtration,  

d salt and water mixture?

Answer:

1. AgNO₃ (aq) + NaCl (aq) ----> NaNO₃ (aq) + AgCl (s)

2. Li₂SO₄ (aq) + BaCl₂ (aq) ----> 2 LiCl (aq) + BaSO₄ (s)

3. 2 NaOH (aq) + MgCl₂ (aq) ----> 2 NaCl (aq) + Mg(OH)₂ (s)

Explanation:

The reaction involving the mixing of two soluble solutions to produce a precipitate is known as a precipitation reaction.

A precipitation reaction is double-replacement reaction (a reaction that exchanges the cations or the anions of two ionic compounds) in which one product is a solid precipitate.

Precipitation reactions at useful in the identification of various ions present in a solution. In order to predict the reactions that will produce a precipitate, solubility rules as given in the solubility table below can be used.

From the tables, the reactions that will produce a precipitate, as well as their balanced molecular equations are as follows:

1. AgNO₃ (aq) + NaCl (aq) ----> NaNO₃ (aq) + AgCl (s)

2. Li₂SO₄ (aq) + BaCl₂ (aq) ----> 2 LiCl (aq) + BaSO₄ (s)

3. 2 NaOH (aq) + MgCl₂ (aq) ----> 2 NaCl (aq) + Mg(OH)₂ (s)

Answer:

Differences between Orbit and Orbitals

Orbit

An orbit is the simple planar representation of an electron.

It can be simply defined as the path that gets established in a circular motion by revolving the electron around the nucleus

The shape of molecules cannot be explained by an orbit as they are non-directional by nature.

An orbit that is well-defined goes against the Heisenberg principle.

Orbital

An orbital refers to the dimensional motion of an electron around the nucleus in a three-dimensional motion.

An orbital can simply be defined as the space or the region where the electron is likely to be found the most.

The shapes of the molecules can be found out as they are directional by nature.

An ideal orbital agrees with the theory of Heisenberg’s Principles.

You would recover 36.525g of NaCl after evaporating all of the water.

To find the grams of NaCl that would be recovered after evaporating all the water, we can use the following formula:

mass = moles * molar mass

Where:

Moles = Molarity * Volume

Molarity = 0.250 M

Volume = 2500.0 mL = 2.5 L

Molar mass of NaCl = 58.44 g/mol

mass = 0.250 M * 2.5 L * 58.44 g/mol

mass = 36.525 g

Learn about evaporation here https://brainly.com/question/2013258

#SPJ1

Answer:

\([Ar] 3d^{2} 4s^{2}\)

Explanation:

You can look at the periodic table and figure out the electron config.

The number of mole in the 15.0 grams of codeine, C₁₈H₂₁NO₃ is 0.05 mole

We know that the mole of a substance is related to it's mass and molar mass according to the following formula:

Mole = mass / molar mass

Therefore, with the above formula, we can determine the number of mole. Details below

Mole = mass / molar mass

Number of mole of codeine, C₁₈H₂₁NO₃ = 15/ 299

Number of mole of codeine, C₁₈H₂₁NO₃ = 0.05 mole

Thus, the number of mole is 0.05 mole

Learn more about mole:

https://brainly.com/question/13314627

#SPJ1

Answer:

there are many advantages

Explanation:

Rust has a strong memory management system. It assigns each piece of memory to a single owner and determines who can access it. It also ensures parallelized code, enabling software to run safely on multiple processors. Rust is easier to maintain and debug.

hope it helps you

Shovels have the ability to load large quantities of material, but less than draglines whereas Ore is natural rock or sediment that contains one or more valuable minerals.

Typically, oxides, sulphides, silicates, or native metals like copper or gold are the minerals of interest. To separate the valuable components from the waste rock, ore must be treated. Numerous geological processes collectively known as ore genesis are responsible for the formation of ore deposits.

Most of the time, an ore is composed of a mixture of valuable minerals, undesired rocks, and other minerals, in addition to one or more ore minerals. Gangue is the name for the portion of an ore that cannot be avoided during mining but is not commercially viable.  The processes of froth flotation, gravity concentration, and other ore dressing techniques remove the precious ore minerals from the gangue minerals.

Learn more about ore here: https://brainly.com/question/16099437

#SPJ1

The solution has a molarity of 0.0924 M.

The number of moles of solute per litre of solution is known as molarity.. For instance, water is both the solution and the solute when table salt is dissolved in it. Each mole of sodium chloride weighs 58.44 grammes. 58.44 grammes of sodium chloride are dissolved in one litre of water to produce one molar solution, or 1M.

Moles of solute per litre of solution is known as molarity (M).

Given: moles of NH3 = 0.355, volume of solution = 3.84 L

Molarity = 0.355 moles / 3.84 L = 0.0924 M

Therefore, the molarity of the solution is 0.0924 M.

To know more about molarity visit:-

https://brainly.com/question/8732513

#SPJ1

Answer:

3.85

Explanation:

Calculate molar mass, starting with each element, then find grams per mole, then convert.

Answer:

e

Explanation:

When the air around you is densely packed, it means the pressure is high.

The atmospheric pressure is directly proportional to air density.

When the air around a place is densely packed, it is an indication of high atmospheric pressure.

On the other hand, if the air around is loosely packed, it means the atmospheric pressure is also low.

More on pressure and density can be found here: https://brainly.com/question/5218385

#SPJ1