How can water be changed into ice​

Gravity, as a fundamental force of nature, is influenced by several factors. The following are some of the key factors affecting gravity:

The correct arrangement of the molecules N2, O2, and F2 in order of their bond enthalpies from least to greatest is option D) N2 < F2 < O2.

Bond enthalpy, also known as bond energy, is the energy required to break a covalent bond in a molecule. It represents the strength of the bond and is influenced by factors such as bond length and bond type.

In this case, nitrogen (N2) has a triple bond, oxygen (O2) has a double bond, and fluorine (F2) has a single bond. Generally, triple bonds are stronger and require more energy to break than double bonds, and double bonds are stronger than single bonds.

Therefore, N2, with its triple bond, has the highest bond enthalpy among the three molecules. F2, with its single bond, has the lowest bond enthalpy. O2, with its double bond, falls in between N2 and F2 in terms of bond enthalpy.

Hence, the correct arrangement of bond enthalpies from least to greatest is N2 < F2 < O2.

To know more about Bond enthalpy refer here:

https://brainly.com/question/29633366

#SPJ11

Answer:

Petrochemicals are used to create most of the everyday items we use. From vehicles to a variety of electronics, almost all of the things we use today are powered by or made of petrochemicals. Increasing product demands have led to the creation of more refineries and plants and thus the creation of more jobs.

Explanation:

Answer:

Explain how the work of Astronomers has been affected by technology.

Explanation:

The invention of the telescope, microscope and other instruments have improved the work of Astronomers by allowing them to see further into outer space and more closely examine stars.

Answer:

To determine the number of moles of CaCl2(s) in a sample of calcium chloride, we need to know the mass of the sample and the molar mass of CaCl2.

The molar mass of CaCl2 can be calculated as follows:

Atomic mass of Ca = 40.08 g/mol

Atomic mass of Cl (x2) = 35.45 g/mol x 2 = 70.90 g/mol

Molar mass of CaCl2 = 40.08 g/mol + 70.90 g/mol = 110.98 g/mol

So, if we have a sample of calcium chloride with a mass of, for example, 5 grams, we can calculate the number of moles as follows:

Number of moles = mass of sample / molar mass

Number of moles = 5 g / 110.98 g/mol

Number of moles = 0.045 moles (rounded to 3 decimal places)

Therefore, the sample contains 0.045 moles of CaCl2.

Explanation:

The diagrams of the arrangement of the electrons in calcium and magnesium have been shown in the image attached to this answer. There are two electrons in the valence shell of calcium.

We know that the electrons are the subatomic particles that we can be able to see in the shells of the atom. It is important that we ought to know that the electrons are the particles that are known to be responsible for the reactivity of the atom.

The number of the electrons that we can find in the atom would depend on the number of the protons that we have in the nucleus of the atom and this is because for the atom to be electrically neutral then we would have to have the same number of electrons and protons being in the atom as we know.

It is clear that calcium is a member of group two of the periodic table and that magnesium is also a member of group two of the periodic table.

The structures for calcium would have Ca and two dots while that of magnesium would have Mg and two dots.

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

#SPJ1

Answer:

Carboxylic acid group

Explanation:

Carboxylic acid and amine groups form the basis of an amino acid.  One group reacts with the other group on a neighboring amino acid to form the peptide bond, with the release of a water molecule.

The ideal of combining individual liberty with material equality has not yet been achieved. This goal is as challenging as the transformation of lead into gold. The two concepts appear to be incompatible. The political philosophy that underpins this ideal is liberalism.

This idea arose from the Enlightenment era, and it emphasizes individual liberty, economic freedom, and political rights. Liberalism advocates that the government should have a limited role in economic and social affairs. It is a political idea that has received a lot of criticism over the years. Critics of liberalism argue that this ideal has failed to promote economic growth and reduce inequality.

They point out that it has led to a concentration of wealth among a small elite, resulting in an unequal distribution of resources. Nonetheless, liberalism continues to be a popular political philosophy, and many countries embrace it. However, it remains a challenge to combine individual liberty and material equality, given their conflicting nature. To achieve this goal, societies must strive to find the right balance between individual freedom and collective well-being.

To know more about material equality visit:

https://brainly.com/question/32259704

#SPJ11

The most indicative phenotype of a natural killer (NK) cell is CD16+. Option d.

This is because CD16, also known as FcγRIII, is a receptor found on the surface of NK cells that recognizes and binds to the Fc portion of IgG antibodies. This binding triggers the release of cytotoxic granules that can destroy virus-infected cells, tumor cells, and other abnormal cells.

CD2 and CD11b are also expressed on the surface of NK cells, but they are not specific to these cells and can also be found on other immune cells. CD3, on the other hand, is a marker for T cells, which are a different type of immune cell that function differently than NK cells. Therefore, the presence of CD16 on a cell is the strongest indicator of it being a natural killer cell. Answer option d.

More on phenotype: https://brainly.com/question/32008728

#SPJ11

Answer:

They all are made up of cells

Answer: They are all made of cells.

Explanation:

Answer: because acid and water react in a vigorous exothermic reaction, releasing heat, sometimes boiling the liquid.

Answer:

I will use pulley b

Explanation:

because the pulley with more efficency can carry out the work better

Answer:

1.10 g/mL

Explanation:

The amount of volume an object displaces is the amount of volume that object takes up.

7.87 - 1.67 = 6.2

The object has a volume of 6.2 mL.

You have the mass (6.82 g) and the volume (6.2 mL).  Divide the two value to find the density.

(6.82 g)/(6.2 mL) = 1.10 g/mL

The density of the object is 1.10 g/mL.

Answer:

9.5 inches = 24.1 cm

Explanation:

Given that,

1 inch = 2.54 cm

We need covert 9.5 inches to cm. For this we will use unitary method. To convert 9.5 inches to cm multiply 2.54 and 9.5. So,

9.5 inches = (2.54 × 9.5) cm

9.5 inches = 24.13 cm  

or

9.5 inches = 24.1 cm

Hence, this is the required solution.

Answer:

c

Explanation:

A property of water is that it requires less heat than ethanol to raise its temperature.

Among the given options, the property of water that stands out is that it requires less heat than ethanol to raise its temperature. This property is known as the high specific heat capacity of water.

Water has a relatively high specific heat capacity compared to many other substances, including ethanol.

This means that it takes a larger amount of heat energy to raise the temperature of water compared to ethanol for the same mass of the substance.

The high specific heat capacity of water is attributed to hydrogen bonding between water molecules.

These hydrogen bonds result in a significant amount of energy being required to break the intermolecular forces and raise the temperature of water. As a result, water can absorb and store a considerable amount of heat energy without undergoing a significant temperature change.

In contrast, ethanol has a lower specific heat capacity, meaning it requires less heat energy to increase its temperature compared to water.

This property of water plays a vital role in regulating Earth's temperature and climate, as water bodies can absorb and release heat energy, helping to moderate temperature changes in the environment.

Learn more about heat capacity of water here:

https://brainly.com/question/16952828

#SPJ11

Answer: A-, NA+ And OH-

Explanation: Thank me later

Answer:

The Dog

Explanation:

The more mass something has the more kinetic energy it has in it.

Answer:

Neutron, neutral subatomic particle that is a constituent of every atomic nucleus except ordinary hydrogen. It has no electric charge and a rest mass equal to 1.67493 × 10−27 kg—marginally greater than that of the proton but nearly 1,839 times greater than that of the electron.

Answer:

the number of protons is 35 and the number of neutrons is 46.

Explanation:

a) the concentration of COCl₂ when the concentrations of both CO and

Cl₂ are 5.90 x 10-³ M is 8.13 x 10^(-3) M

b) When the equilibrium concentration of COC12 is 0.003 70 M,, the concentrations of CO and Cl₂ are approximately 0.0511 M, assuming they are equal.

To solve the given equilibrium problem, we can use the equilibrium constant expression and the stoichiometry of the reaction. The equilibrium constant expression for the decomposition of phosgene reaction is:

Kc = [CO][Cl₂] / [COCl₂]

where [CO], [Cl₂], and [COCl₂] are the concentrations of the respective species at equilibrium.

a. To find the concentration of COCl₂ when [CO] = [Cl₂] = 5.90 x 10^(-3) M, we can substitute the given values into the equilibrium constant expression:

4.282 x 10^(-2) = (5.90 x 10^(-3) M) * (5.90 x 10^(-3) M) / [COCl₂]

Simplifying the equation, we find:

[COCl₂] = (5.90 x 10^(-3) M) * (5.90 x 10^(-3) M) / (4.282 x 10^(-2))

[COCl₂] ≈ 8.13 x 10^(-3) M

b. When the equilibrium concentration of COCl₂ is 0.00370 M, and assuming [CO] = [Cl₂], we can use the equilibrium constant expression to find the concentrations of CO and Cl₂:

4.282 x 10^(-2) = ([CO])^2 / (0.00370 M)

Simplifying the equation, we find:

[CO] ≈ [Cl₂] ≈ √((4.282 x 10^(-2)) * (0.00370 M))

[CO] ≈ [Cl₂] ≈ 0.0511 M

Therefore, when the equilibrium concentration of COCl₂ is 0.00370 M, the concentrations of CO and Cl₂ are approximately 0.0511 M, assuming they are equal.

for more questions on concentration
https://brainly.com/question/28564792
#SPJ11

Answer:

Carbon-12 has 12 and Carbon-13 has 13, thats the atomic mass.  

Explanation:

Based on the given phase diagram, the point F is located in the region where the temperature is above the critical temperature and the pressure is between the critical pressure and the vapor pressure of the substance.

At this point, the substance exists in a single phase, which is a liquid. Therefore, the answer is C) liquid. It is important to note that if the point F was located above the critical temperature and above the critical pressure, the substance would exist as a supercritical fluid, which is a unique state of matter with properties of both a gas and a liquid. Therefore, the answer for the point F would be E) supercritical fluid in that case.

to know more about phase intake pls visit:

https://brainly.com/question/30887508

#SPJ11

Answer:

It has less carbon dioxide than when it entered the gills, it has more oxygen than when it entered the gills

Explanation:

there is none i just found the answer =_=

Blood is different after it is pumped through gills as it has less carbon dioxide and more oxygen when it enters the gills through the process of diffusion.

Diffusion is defined as the process of movement of molecules which takes place under concentration gradient. It helps in movement of substances in and out from the cell.The molecules move from lower concentration region to a higher concentration region till the concentration becomes equal.

There are 2 main types of diffusion:

1) simple diffusion-process in which substances move through a semi-permeable membrane without the aid of transport proteins.

2) facilitated diffusion- It is a passive movement of molecules across cell membrane from higher concentration region to lower concentration.

There are 2 types of facilitated diffusion one is osmosis and dialysis.

Learn more about diffusion,here:

https://brainly.com/question/14852229

#SPJ5

The empirical formula for the compound is \(PCl_{3}\)

The empirical formula of a compound is the formula in which the atoms of all the elements are present in their simplest whole-number ratio. It's possible that a compound's empirical formula and molecular formula are different.

Given Information:

P = 10.15 mg

Cl = 34.85 mg

Convert mg to moles

                                 31 mg of P ----------------- 1 mmol

                                 10.15 mg  ------------------   x

                                 x = 0.327 mmol of P

                                  35.5 mg of Cl ------------  1 mmol

                                   34.85 mg -----------------  x

                                 x = 0.982 mmol of Cl

Divide by the lowest number of mmoles:

For P = \(\frac{0.327}{0.327}\) = 1

For Cl = \(\frac{0.982}{0.327}\) = 3

So the empirical formula for the compound will be \(PCl_{3}\)

Learn more about empirical formula:

brainly.com/question/14044066

#SPJ4

Molecules are compounds that make covalent bonds between atom. In a covalent bond, the electrons from each atom invoved are shared between them, sticking the atoms together.

In ionic compounds, the electrons of each atoms are not shared, they are part of either of the ions. The ions sticke together because they are charged with opposite charges, so they attract each other.

So, ionic compounds are not considered individual molecules because they don't make covalent bonds, that is, their atoms don't shared electrons, they attract each other because of their opposite charges.

The significance of Lewis symbols lies in their ability to provide a simple and easy-to-understand representation of the valence electrons of an atom or ion.

Lewis symbols are diagrams used to represent the valence electrons of an atom or ion, where the valence electrons are shown as dots arranged around the symbol of the element. The Lewis symbol was first introduced by the American chemist Gilbert N. Lewis in 1916.

The significance of Lewis symbols lies in their ability to provide a simple and easy-to-understand representation of the valence electrons of an atom or ion. The valence electrons are the outermost electrons of an atom, which are involved in chemical bonding and determine the reactivity of the atom.

The Lewis symbol provides a visual representation of the valence electrons that can be used to predict the types of chemical bonds that an atom can form. For example, the number and arrangement of dots in a Lewis symbol can indicate the number and type of chemical bonds an atom can form, such as covalent bonds or ionic bonds.

The Lewis symbol is also useful in understanding chemical reactions and predicting the products of a reaction. By using Lewis symbols to represent the reactants and products, it is possible to identify the transfer or sharing of electrons that occurs during a chemical reaction.

Overall, the Lewis symbol is an important tool in chemistry that provides a simple and intuitive way to represent the valence electrons of an atom or ion and to understand chemical bonding and reactions.

Learn more about Lewis symbol below.

https://brainly.com/question/20300458

#SPJ1

Carbon dioxide molecules can absorb and emit infrared radiation, and they are one of the most abundant constituents of Earth's atmosphere.

Thus, the correct options are:d) Are one of the most abundant constituents of Earth's atmospheree) Can move in many ways, thus absorbing and emitting infrared radiation

Carbon dioxide is a trace gas present in the Earth's atmosphere. It's a vital component of Earth's carbon cycle, which helps to regulate Earth's temperature and support life as we know it. Carbon dioxide molecules are one of the most common gases in the atmosphere, accounting for around 0.04% of the Earth's atmosphere.

The greenhouse effect is caused by carbon dioxide, methane, and other greenhouse gases. When the Sun's energy reaches the Earth's surface, it is absorbed and then radiated back into space as infrared radiation. Greenhouse gases absorb this radiation and trap it in the atmosphere, which causes the Earth's temperature to rise and the climate to change.

Carbon dioxide molecules are capable of absorbing and emitting infrared radiation due to their molecular structure, which consists of one carbon atom and two oxygen atoms. This property of carbon dioxide is the main reason it's classified as a greenhouse gas.

To know more about Carbon dioxide molecules visit:

https://brainly.com/question/12770212

#SPJ11