How many grams are there in 4 moles of potassium chloride?.

Answer:

I think he was right but not explaining

Explanation:

I think it is C cause.... the volume of a material is the amount of matter that matterial can hold. it should the the amount of space the whole material takes up.

so C is the answer.

pls make this the brainliest.

not because it is, but because I asked.

Potassium chloride (KCl) has a molar mass of 74.55 g/mol. Its mass can be calculated by multiplying the number of moles of KCl by its molar mass or by using a balance to directly measure its mass in grams.

To solve this problem, we need to use the formula:

mass = concentration x volume x molar mass

First, let's convert the given volume of 350 mL to liters by dividing by 1000:

350 mL ÷ 1000 mL/L = 0.350 L

The molar mass of KCl is 74.55 g/mol.

Now we can substitute the given values into the formula:

mass = 0.24 mol/L x 0.350 L x 74.55 g/mol

mass = 6.3 g

Therefore, the mass of KCl in 350 mL of 0.24 M KCl is 6.3 g. The answer is (e).

To know more about mass of KCl click this link -

brainly.com/question/9418363

#SPJ11

Answer:

Number of protons

Explanation:

There are three sub atomic particles. These are;

- Protons

- Electrons

- Neutrons

Among these three particles, only one determines the identity of the element. This is the Protons. The number of protons which is also called the atomic number determines the identity of an element. For instance, atom with one proton is Hydrogen and n other element can have atomic number of one.

Answer: The chemical equation you have listed is nonane. However, I have inculded a screen shot that explains what each aswer option is so you can verify.

Explanation:

You can modify to wrap aluminum foil around the sample flask and fractionating column.

And place the receiving flask in an ice bath.

Separating a mixture into its constituent parts, or fractions is known as fractional distillation. By heating chemical mixtures to a temperature where one or more fractions of the mixture evaporate, chemical compounds are separated.

Fractional Distillation can also be described as the separation of a liquid combination via distillation, usually using a fractionating column, into fractions with different boiling points (and thus chemical composition).

Chemicals can be cleaned by fractional distillation, and mixtures can be divided into their constituent parts.

To know more about fractional distillation, visit:

https://brainly.com/question/15187318

#SPJ4

Answer:

Answer: hunting deer

Explanation:

since the extraction of resources to the withdrawing of materials from the enviroment for human use, including fossil fuels ( oil, gas, and coal), rocks and minerals, bimass via deforestation and fishing and hunting, and water.

Elements from group 1 have the least chances to attract electrons due to their low electronegativity.

The atom's tendency to attract electrons in a molecule is known as electronegativity. The trend of electronegativity on the periodic table is as follows:

This means that the least electronegative element is from group 1 elements, specifically Cesium and Francium which have electronegativity of 0.79 and 0.70, respectively. In general, group 2 elements have higher electronegativity compared to group 1 elements. The three elements with the highest electronegativity are nitrogen, oxygen, and fluorine which have 3.04, 3.44, and 3.98, respectively.

To learn more regarding electronegativity, please refer to the link https://brainly.com/question/12676386.

#SPJ4

a) There are 19 electrons in a potassium atom. I don't really know how to explain it. I've been told that the number of protons and electrons are the same.

b) There are two electrons on the first shell, 8 on the second, 8 on the third, and 1 one on the fourth shell, which totals 19.

c) There is one electron in the valence shell.

d) I don't know what to do for this one. Sorry.

a) 19 electrons are present, the same number as the protons

b) [Ar] \(4s^{1}\) (condensed)

c) theres one valence electron in a potassium atom

d) they could be heated

The diagrams show the arrangements of carbon atoms in diamond and in graphite. The diamond is sp³ hybridized and have tetrahedral shape while graphite is sp² hybridized and is hexagonal ring shaped structure.

Diamond containing carbon atoms are strongly bonded chemically with other four carbons. The carbon atoms are sp³ hybridized and make percept tetrahedral shape. Diamond used in jewelry makin g. they are used by surgeons in the cataract surgery. diamond is hard, used for cutting or drilling rock.

Graphite containing carbon atom are form the weak bond with weak forces. the carbon are sp² hybridized and make a hexagonal ring shape structure. The force in graphite in weak that makes it useful material.  it is used as lubricant. it is used in pencil. used in making electrodes.

The diagrams show the arrangements of carbon atoms in diamond and in graphite. The diamond is sp³ hybridized and have tetrahedral shape while graphite is sp² hybridized and is hexagonal ring shaped structure.

To learn more about diamond and graphite here

https://brainly.com/question/22856672

#SPJ1

Answer:

States of Matter

Solid has fixed volume.

Solid has fixed shape.

Solid has high density.

Solids are heavy.

Solid does not flow.

Answer:

Explanation:

Each time you add a neutron, it adds one mass number to the mass because each neutron and proton weighs approximately 1 amu.

Answer:

The mass increases

Explanation:

When protons and neutrons are added, the mass increases. Electrons, on the other hand, are so small they do not affect the mass.

(a) The atomic radius of each atom in a simple cubic unit cell can be calculated using the formula:

Atomic radius = (Length of unit cell) / 2

Given that the length of the simple cubic unit cell is 0.36 nm, we can substitute this value into the formula:

Atomic radius = 0.36 nm / 2 = 0.18 nm

Therefore, the atomic radius of each atom in a simple cubic unit cell is 0.18 nm.

(b) In a face-centered cubic (FCC) unit cell, the atoms touch along the face diagonals. To calculate the atomic radius in an FCC unit cell, we need to consider the diagonal of the face. Using the Pythagorean theorem, we can determine the diagonal length:

Diagonal length = √2 * (Length of unit cell)

Given that the length of the face-centered cubic unit cell is 0.200 nm, we can substitute this value into the formula:

Diagonal length = √2 * 0.200 nm ≈ 0.2828 nm

Since atoms touch along the diagonal, the atomic radius is half of the diagonal length:

Atomic radius = Diagonal length / 2 = 0.2828 nm / 2 = 0.1414 nm

Therefore, the atomic radius of each atom in a face-centered cubic unit cell is approximately 0.1414 nm.

(c) The volume of a sphere can be calculated using the formula:

Volume of a sphere = \((4/3) * \pi * (radius)^3\)

Given that the radius of one atom is 0.200 nm, we can substitute this value into the formula:

Volume of one atom = \((4/3) * \pi * (0.200 nm)^3 = 0.03351 nm^3\)

Know more about atom here:

https://brainly.com/question/1566330

#SPJ11

The correct answer to this question is option a) 5.5 x 10-4 kg.

To convert milligrams to kilograms, we need to divide the mass by 1,000,000 (since there are 1,000,000 milligrams in a kilogram). So, 550 milligrams is equal to 0.00055 kilograms.
Looking at the answer choices, we can see that option a) 5.5 x 10-4 kg is the correct answer. This is because 5.5 x 10-4 is the scientific notation for 0.00055, which we just calculated.
It's important to note that kilogram is the SI unit for mass, and is defined as the mass of the International Prototype of the Kilogram (IPK), which is a platinum-iridium cylinder kept at the International Bureau of Weights and Measures in France. The kilogram is used in scientific and engineering applications around the world.
In conclusion, the correct answer to this question is option a) 5.5 x 10-4 kg.

To know more about mass visit: https://brainly.com/question/11954533

#SPJ11

The mass of a sample of 550 milligrams expressed in kilograms is 5.5 x 10^-4 kg (option a).


To convert the mass of the sample from milligrams to kilograms, we need to understand the relationship between these units. There are 1,000,000 milligrams (mg) in a kilogram (kg). So, to convert milligrams to kilograms, we need to divide the mass by 1,000,000.

For the given mass of 550 mg, we perform the conversion as follows:
550 mg / 1,000,000 = 0.00055 kg

Now, we express this number in scientific notation:
0.00055 kg = 5.5 x 10^-4 kg

Thus, the correct answer is 5.5 x 10^-4 kg (option a).

Learn more about mass here:

https://brainly.com/question/30267951

#SPJ11

Answer:

Compounds containing two elements (binary compounds) can either have ionic or covalent bonding. If a compound is made from a metal and a non-metal, its bonding will be ionic. If a compound is made from two non-metals, its bonding will be covalent.

It is more effective to perform an extraction with several small portions of solvent as opposed to one large portion of solvent of equal volume because the amount of the material left in the trash will be less.

The extraction of certain ratio of the solute is able to the distribute among the phases during each extraction. The various extractions with the lesser amounts of the solvent are more efficient than the single extraction with the huge amount of solvent.

The extraction is about to maximize the outside field of the communication between the two solvents, we can easily get the more surface area in the contact with the fewer amounts.

To learn more about extraction here

https://brainly.com/question/14522836

#SPJ4

Answer:

the state or quality of a material or membrane that causes it to allow liquids or gases to pass through it.

Answer:

225.6 kJ, assuming the water is already at 100 °C

Explanation:

The correct answer to this question will depend on the initial temperature of the water to which heat is added to produce steam.  Energy is required to raise the water temperature to 100°C.  At that point, an energy of vaporization is needed to convert liquid water at 100 °C to water vapor at 100°C.  The heat of vaporization for water is 2256.4 kJ/kg.  The energy required to bring 100g of water from a lower temperature to 100°C is calculated at 4.186 J/g°C.  We don't know the starting temperature, so this step cannot be calculated.

Assuming that we are already at 100 °C, we can calculate the heat required for vaporization:

(100.0g)(1000.0g/1 kg)(2256.4 kJ/kg) = 225.6 kJ for 100 grams water.

Hydraulic conductivity, also known as permeability, is a property of porous materials that describes their ability to transmit fluid (typically water) through them. The hydraulic conductivity (K) for the given parameters is approximately 0.1667 m/s.

It represents the ease with which water can flow through a saturated medium under a hydraulic gradient. Hydraulic conductivity is influenced by various factors such as the properties of the porous medium (e.g., particle size, shape, and arrangement), the fluid viscosity, and the pressure gradient. It is commonly expressed in units of velocity, such as meters per second (m/s) or centimeters per second (cm/s).

To calculate the hydraulic conductivity (K) using the given parameters, let's substitute the values into the equation:

\(K = (0.4 * 10^{-3}) / ((\pi * (0.085 / 2)^2) * (0.12 / 0.18))\)

First, we can simplify the expression inside the parentheses:

\(K = (0.4 * 10^{-3}) / ((\pi * (0.0425)^2) * (0.12 / 0.18))\\K = (0.4 * 10^{-3}) / ((\pi * 0.0018025) * (0.12 / 0.18))\\K = (0.4 * 10^{-3}) / (0.0035962 * 0.6667)\\K = (0.4 * 10^{-3}) / 0.0023975\\\\K = 0.1667 m/s\)

Therefore, the hydraulic conductivity (K) for the given parameters is approximately 0.1667 m/s.

For more details regarding hydraulic conductivity, visit:

https://brainly.com/question/31920573

#SPJ4

A. The reaction will shift toward the products (Right).

In the given system, the forward reaction is represented by the equation 2NO(g) + O2(g) ⇌ 2NO2(g) + 113.06 kJ

When NO gas is added to the container, it increases the concentration of one of the reactants. According to Le Chatelier's principle, if there is a change in the conditions of a system at equilibrium, the system will adjust to counteract that change.

In this case, adding more NO gas increases its concentration. To counteract this increase, the system will shift in the direction that reduces the concentration of NO, which is the reactant.

The system will shift towards the products (right) to consume some of the additional NO, in order to restore equilibrium.

Learn more about equilibrium at:

https://brainly.com/question/30807709

#SPJ2

Answer:

This is a balanced equation because the same types of atoms and the same numbers of each atom are present on both sides of the equation. 8 S atoms are found on both sides of the equation, and 48 F atoms are found on both sides of the equation. S8 and 24F2 are the reactants; 8SF6 is the product. This is a combination reaction because two substances (S8 and 24F2) undergo a chemical union to form a more complex substance (8SF6).

S8+24F2→8SF6

Explanation:

Answer:

4) Neon and Argon

Explanation:

Sodium has 11 electrons, Chlorine has 17.

For both of them to complete their shells Sodium will give one electron to chlorine.

Sodium will become 2,8 in the reaction.

Chlorine will become 2,8,8 in the reaction.

2,8 is the electron configuration of Neon.

2,8,8 is the electron configuration of Argon

When light hits a homogeneous solution, it tends to pass straight through the solution without any significant scattering or reflection, and when light hits a sample with particles, it tends to scatter and reflect from the surface of the particles.

When light hits a homogeneous solution, it tends to pass straight through the solution without any significant scattering or reflection. This is because a homogeneous solution has a uniform composition and there are no particles or interfaces to scatter or reflect the light.

On the other hand, when light hits a sample with particles, it tends to scatter and reflect from the surface of the particles. This is because particles have irregular surfaces that cause the incident light to scatter in different directions. The amount and direction of the scattered light depend on the size, shape, and refractive index of the particles, as well as the wavelength and polarization of the incident light.

This phenomenon is known as light scattering and is widely used in many analytical techniques, such as dynamic light scattering and static light scattering, to determine the size, shape, and concentration of particles in a sample.

To know more about homogeneous solution here

https://brainly.com/question/3293242

#SPJ4

Answer:

Note that melting and vaporization are endothermic processes in that they absorb or require energy, while freezing and condensation are exothermic process as they release energy.

Answer:

In cellular respiration, complex molecules containing carbon react with oxygen to produce carbon dioxide and other materials. ... Matter is conserved during cellular respiration because atoms are conserved in physical and chemical processes

Explanation:

I hope this helps

Answer:

Water

Explanation:

Water is a chemical molecule structurally consisting of two hydrogen atoms and one oxygen atom to form the chemical formula, H2O. It is geometrically a bent shape due to electron position in each atom that makes it up.

Water is the only molecule on Earth that exists in the three different states of matter. This means that water can exist in a solid, liquid and gaseous form.

- Water as a SOLID is called ICE

- Water as a LIQUID is called WATER

- Water as a GAS is called VAPOUR

Answer:

electrons are fermions, they can only access an energy level if it has not already been occupied by another electron. Thanks to this principle, there is a minimum energy level within the atom and it is not possible for an electron to collapse to the nucleus because it cannot exceed this} threshold.

Explanation:

I hope I have helped you.