What are the 3 subatomic particles of an atom? *
electrons, smarts, protons
neutrons, electrons, protons
protons, electrons, querry

The correct answer is (c) ph3.

Phosphine (PH3) exhibits dipole-dipole attraction between molecules.

Dipole-dipole attraction occurs between polar molecules that have a positive end and a negative end. This happens when there is a significant difference in electronegativity between the atoms in the molecule, causing a separation of charges. In the case of phosphine (PH3), the electronegativity difference between phosphorus and hydrogen atoms creates a dipole, with the phosphorus atom being slightly more negative and the hydrogen atoms being slightly positive.

This dipole-dipole attraction between phosphine molecules contributes to its higher boiling point compared to nonpolar molecules like carbon dioxide (CO2), bromine (Br2), and tetrachloromethane (CCl4). These molecules lack a dipole moment because their bonds are nonpolar or symmetrical, so they do not exhibit dipole-dipole attractions.

It's important to note that although molecules like CO2 and CCl4 contain polar bonds, their overall molecular shape results in a cancellation of the individual bond dipoles, making them nonpolar overall. This means they do not exhibit dipole-dipole attraction between molecules.

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Answer:

fttttggttfvvgfrr ccsfgt chg chu rdh fig ffhfr

Answer:

To solve this problem, you'll need the formula that relates heat energy to mass and heat of fusion:

q = m·ΔHf

where

q = heat energy

m = mass

ΔHf = heat of fusion

Explanation:

62.3J ÷ 7.3g = ΔHf

8.53 J/g = ΔHf

4.18 cal/g = ΔHf

The formula for calculating the pH of a solution is expressed as:

Given the following parameter

pH =. 6.36

Substitute

Determine the concentration of [OH-] in the solution

Answer:

3 is the answer

Explanation:

as the number of electrons =number of protons

so the negatively charged particles= positively charged particles

Chromium is added to iron to form stainless steel.

Bronze, an alloy used for statues, is primarily composed of copper and tin. Other metals such as zinc, lead, and nickel can also be added.

Taps are made of stainless steel instead of copper because stainless steel offers better corrosion resistance, strength, and durability, which are essential for their frequent use and long-term performance.

Gold can be hardened by adding metals like silver, copper, nickel, and zinc in certain proportions.

Brass is primarily made from copper and zinc, typically containing around 60-70% copper and 30-40% zinc.

Stainless steel is formed by adding chromium to iron. The addition of chromium helps in creating a thin, invisible layer of chromium oxide on the surface of the steel, which provides corrosion resistance and gives stainless steel its characteristic shine.

Bronze is an alloy primarily composed of copper and tin. However, other metals such as zinc, lead, and nickel can also be added to bronze to modify its properties. The exact composition of bronze can vary depending on the desired characteristics and specific application.

Copper is indeed used for water pipes because it is easy to bend and has excellent conductivity for carrying water. However, taps (faucets) are usually made of stainless steel rather than copper due to several reasons. Stainless steel offers better resistance to corrosion from water exposure compared to copper. It also provides greater strength and durability, making it more suitable for the mechanical requirements of taps, which undergo frequent use and require reliable performance over time.

Gold is a soft metal, but it can be hardened by alloying it with other metals. Commonly used metals for alloying with gold include silver, copper, nickel, and zinc. By adding these metals in certain proportions, the resulting gold alloy becomes stronger and more resistant to wear and deformation while retaining some of the desirable properties of gold, such as its luster and color.

Brass is an alloy predominantly made from copper and zinc. The proportion of copper to zinc can vary, but typically brass contains around 60-70% copper and 30-40% zinc. This composition gives brass a favorable combination of properties, including good corrosion resistance, malleability, and low friction, making it useful for applications such as musical instruments, plumbing fittings, decorative items, and electrical connectors.

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Answer:

b

Explanation:

mark me as brainliest

have a great day

Answer:

Corrode substances; glass sodium magnicium calcium zinc

Answer:

Magnesium + iron chloride   →    iron + magnesium chloride

Explanation:

It is the single replacement reaction.

Single replacement:

It is the reaction in which one elements replace the other element in compound.

AB + C → AC + B

Molecular equation:

Magnesium + iron chloride   →    iron + magnesium chloride

Chemical equation:

Mg(s)  + FeCl₂(aq)       →     MgCl₂(aq) + Fe(s)

Ionic equation:

Mg(s)  + Fe²⁺(aq) + 2Cl⁻(aq)       →     Mg²⁺(aq) + 2Cl⁻(aq) + Fe(s)

Net ionic equation:

Mg(s) + Fe²⁺(aq)      →   Fe(s) + Mg²⁺(aq)

Answer:

The answer is D. Camouflage

Answer:

THE ANSWER IS D) CAMOUFLAGE

The number of torrs in 84.2 mmHg is 84.2 torrs.

The torr and the millimeter of mercury (mmHg) are both units of pressure that are commonly used to measure the pressure of gases. In fact, 1 torr is defined as the pressure exerted by a column of mercury that is exactly 1 millimeter high at 0 degrees Celsius under standard gravity conditions.

Therefore, to convert from mmHg to torr, we simply need to divide the pressure in mmHg by the conversion factor of 1 torr/mmHg.

So, 84.2 mmHg divided by 1 torr/mmHg is equal to 84.2 torrs. Rounded to 1 decimal place, this is equal to 84.2 torrs.

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The concentration of hydroxide ions [OH-] in a 1.0 M KC2H3O2 solution is 1.0 x 10^-14 M. The concentration of hydronium ions [H+] in a 1.0 M KC2H3O2 solution is 1.0 M. and the pH of a 1.0 M KC2H3O2 solution is 0

A. 1.0 M KCl:

KCl is a salt that dissociates completely in water, yielding K+ and Cl- ions. Since KCl does not contain hydroxide (OH-) or hydronium (H+) ions, the concentrations of [OH-] and [H+] in a 1.0 M KCl solution are both 0 M. Therefore, the pH of a 1.0 M KCl solution is neutral, which is pH 7.

B. 1.0 M KC2H3O2:

KC2H3O2 is the salt of acetic acid (CH3COOH), which is a weak acid. When KC2H3O2 dissolves in water, it undergoes partial dissociation into K+ ions and CH3COO- ions. In this case, CH3COO- acts as a weak base and reacts with water to form hydroxide ions (OH-). The [OH-] concentration can be calculated using the equilibrium constant (Kw) for water, which is 1.0 x 10^-14 at 25°C:

Kw = [H+][OH-] = 1.0 x 10^-14

Let's denote [OH-] as x. Since KC2H3O2 is a weak electrolyte, we can assume that the initial concentration of [OH-] is negligible compared to the concentration of KC2H3O2, which is 1.0 M. Therefore, we can approximate [OH-] as 1.0 M + x.

The reaction between CH3COO- and water can be represented as:

CH3COO- + H2O ⇌ CH3COOH + OH-

Using the equilibrium expression for this reaction, we get:

Kw = [CH3COOH][OH-] / [CH3COO-]

Since KC2H3O2 is a salt and fully dissociates into K+ and CH3COO- ions, the initial concentration of CH3COOH is negligible compared to the concentration of KC2H3O2, which is 1.0 M. Therefore, we can approximate [CH3COOH] as 0 M.

Plugging these values into the equilibrium expression and solving for x:

1.0 x 10^-14 = (0)(1.0 M + x) / (1.0 M)

x = 1.0 x 10^-14 / 1.0 M

x = 1.0 x 10^-14 M

To find the concentration of hydronium ions [H+], we can use the fact that [H+] and [OH-] are related by Kw:

Kw = [H+][OH-]

[H+] = Kw / [OH-]

Plugging in the values:

[H+] = (1.0 x 10^-14) / (1.0 x 10^-14 M)

[H+] = 1.0 M

Finally, we can calculate the pH using the formula:

pH = -log[H+]

Plugging in the value for [H+]:

pH = -log(1.0)

pH = 0

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Answer:

2,282 cm³

Explanation:

If all other variables are being held constant, you can find the new volume of the balloon using the Charles' Law equation. The equation looks like this:

V₁ / T₁ = V₂ / T₂

In this equation, "V₁" and "T₁" represent the initial volume and temperature. "V₂" and "T₂" represent the final volume and temperature. Before you can solve for the new volume, you need to convert Celsius to Kelvin (negative values do not work in this equation). This can be done by adding 273.15 to each temperature.

V₁ = 2600 cm³                                    V₂ = ? cm³

T₁ = 21 °C + 273.15 = 294.15 K           T₂ = -15 °C + 273.15 = 258.15 K

V₁ / T₁ = V₂ / T₂                                               <----- Charles' Law

(2600 cm³) / (294.15 K) = V₂ / (258.15 K)      <----- Insert values

8.839 = V₂ / (258.15 K)                                   <----- Simplify left side

2282 = V₂                                                      <----- Multiply both sides by 258.15

If one form of a gene can mask the appearance of another form, that form is considered dominant over the other form. Option B.

According to Mendel, genes are usually made up of 2 alleles. These alleles can be the same or different. When the alleles are the same, the gene is said to be homozygous. If the alleles are different, the gene is said to be heterozygous.

When the two alleles that make up a gene are different, one will be dominant and the other will be recessive. The dominant gene masks the effect of the recessive gene. In other words, the recessive gene cannot be expressed as long as it coexists with the dominant gene. In order for it to be expressed, it has to be in two copies or a homozygous recessive form.

For the dominant allele, however, only one copy is needed for it to be expressed.

In summary, if one form of a gene can mask the appearance of another form, that form is considered dominant over the other form.

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Answer:

d- knowledge because science is about learning and exploring

Answer:

I think the answer is knowledge

The balanced chemical equation for the reaction between copper and silver nitrate is

Cu(s) + 2AgNO₃(aq)  → 2Ag (s) +  Cu(NO₃)₂ (aq)

In the above reaction, Cu is a reactant, AgNO₃ is another reactant

When both are mixed they make a reaction where there are formed Ag and Cu(NO₃)₂.

This is a redox reaction where:

Cu is reduced ⇒  Cu → Cu²⁺  +  2e⁻

Ag⁺ is oxidized ⇒ Ag⁺ + 1e⁻ → Ag

To balance the reaction, we multiply the second half reaction by 2

Cu → Cu²⁺  +  2e⁻

(Ag⁺ + 1e⁻ → Ag) .2  ⇒  2Ag⁺ + 2e⁻ → 2Ag

When we sum both, we cancel the electrons:

Cu  +  2Ag⁺ + 2e⁻  →  2Ag  +  Cu²⁺  +  2e⁻

Balanced reaction is:

Cu(s) + 2AgNO₃(aq)  → 2Ag (s) +  Cu(NO₃)₂ (aq)

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The complete question should be

Write the chemical equation for this process: ""Copper metal is placed in a solution of silver nitrate. This produces silver metal and copper nitrate solution.""

Answer:

+5

Explanation:

hope this helps! :)

Answer:

In general, atomic radius decreases across a period and increases down a group. Across a period, effective nuclear charge increases as electron shielding remains constant.

Explanation:

The molecular component that makes each individual amino acid unique is the side chain or R group

Amino acids are made up of three different components, and these components make each individual amino acid unique. The three components are the amino group (-NH2), the carboxyl group (-COOH), and the side chain or R group.

Amino acids are the building blocks of proteins and each of the 20 different types of amino acids has a unique side chain that determines its unique molecular properties. For example, some amino acids have polar side chains that make them hydrophilic or water-soluble, while others have nonpolar side chains that make them hydrophobic or water-insoluble.

There are 20 different amino acids that are used to make proteins. The molecular component that makes each individual amino acid unique is the side chain or R group. The side chain can be any of the 20 different types of chemical groups, and it determines the unique properties of the amino acid. For example, the side chain of glycine is a hydrogen atom, while the side chain of tryptophan is a complex ring structure containing nitrogen and carbon atoms.

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1. A neutron outside a nucleus decays into a proton, electron, and antineutrino: This process is known as beta decay, and it is governed by the weak nuclear force. The weak nuclear force is responsible for interactions involving particles that undergo radioactive decay, such as the transformation of a neutron into a proton.

2. Protons and neutrons attract each other in a nucleus: This is the result of the strong nuclear force, also known as the strong interaction. The strong force is responsible for binding protons and neutrons together within the atomic nucleus. It overcomes the electromagnetic repulsion between positively charged protons and holds the nucleus together.

3. The Earth pulls on the Moon: This is an example of gravitational interaction. Gravity is responsible for the attractive force between objects with mass. In this case, the Earth's gravitational pull is responsible for the Moon orbiting around it.

4. Protons in a nucleus repel each other: This is due to the electromagnetic force, which is responsible for interactions between charged particles. Protons, being positively charged, repel each other due to the electromagnetic repulsion. It is the electromagnetic force that prevents the nucleus from collapsing under the repulsive forces between protons.

Understanding the fundamental interactions helps us explain the behavior and interactions of particles at the atomic and subatomic level, providing insights into various natural phenomena and the structure of matter.

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Match the process with the fundamental interaction responsible for this process. - Protons in a nucleus repel each other. -The Earth pulls on the Moon. -Protons and neutrons attract each other in a nucleus. -A neutron outside a nucleus decays into a proton, electron, and antineutrino. with these : 1- The electromagnetic interaction 2- the gravitational interaction 3- The weak interaction 4- The strong interaction

Hazardous gases are those that can cause harm to humans, animals, and the environment. Some of the most dangerous gases include carbon monoxide, sulfur dioxide, nitrogen oxides, and volatile organic compounds.

Gas Name of Gas Effects on Health Effects on the Environment Carbon Monoxide Colorless, odorless gas It can cause headaches, dizziness, nausea, vomiting, and even death in severe cases.

Air pollution, climate change Sulfur Dioxide A colorless gas with a pungent odor Irritation of the eyes, nose, throat, and respiratory system.

It can lead to bronchoconstriction, reduced lung function, and increased risk of respiratory infection.

Acid rain, soil and water pollution Nitrogen Oxides A group of gases including nitrogen monoxide, nitrogen dioxide, and nitrous oxide Respiratory problems, such as coughing, wheezing, and shortness of breath. It can also increase the risk of respiratory infections.

Acid rain, smog, ground-level ozone formationVolatile Organic Compounds (VOCs)A group of chemicals that includes benzene, formaldehyde, and toluene.

Headaches, nausea, and other health effects, including cancer. VOCs contribute to the formation of ozone in the lower atmosphere (troposphere), which can lead to respiratory problems and other health effects.

In conclusion, hazardous gases can have serious effects on human health and the environment.

It is important to take steps to reduce the emission of these gases, such as using clean energy sources, reducing the use of fossil fuels, and adopting environmentally friendly practices.

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Answer:

7.4 moles solute

Explanation:

From definition of Molarity (M) = moles solute (n)/volume of solution in Liters(V)

=> moles solute (n) = Molarity (M) x Volume (L) = (3.7 moles/L)(0.500L) = 7.4 moles solute

The condensed structural formulas of the products when hexanoic acid and NaOH react is CH₃(CH₂)₄COONa.

Caproic acid is a carboxylic acid produced from hexane with the chemical formula CH 3(CH 2) 4COOH. It is a white oily liquid with a greasy, cheesy, waxy odour reminiscent of goats or other barnyard animals.

Hexanoic acid's molecular or chemical formula is C6H12O2. It is crystalline white in its solid state. It appears as a colourless - light yellow solution in aqueous form and has an unpleasant odour. It either does not dissolve or just marginally dissolves in water. It has a lower density than water. Butylacetic acid is a 6-carbon backbone saturated medium-chain fatty acid. It is a fatty acid with a single chain. It is both a plant metabolite and a human metabolite.

Reaction of Hexonic acid with NaOH:

CH₃CH₂CH₂CH₂CH₂CHO + NaOH → CH₃(CH₂)₄COONa

The question is asking for condensed formula and you have written the structural formula.

The correct formula is

CH₃(CH₂)₄COONa

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Answer: Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.

Explanation: A physical property is a characteristic of matter that is not associated with a change in its chemical composition

In VO, the charge on the vanadium ion is +2. In V2O3, the charge on the vanadium ion is +3.

Vanadium is a transition metal found in group 5 on the periodic table. It has an atomic number of 23, an atomic mass of 50.9415, and five valence electrons in its outer shell. Vanadium is able to form several different types of compounds, including two common ones: VO and V2O3.

VO is a compound composed of one vanadium ion and one oxygen ion. In this compound, the vanadium ion has a charge of +2, meaning it has lost two electrons from its outer shell. This is due to the fact that oxygen is very electronegative and is able to pull electrons away from the vanadium.

V2O3 is a compound composed of two vanadium ions and three oxygen ions. In this compound, the vanadium ion has a charge of +3, meaning it has lost three electrons from its outer shell. This is because oxygen is even more electronegative than it is in VO, and is able to pull three electrons away from the vanadium.

Overall, vanadium ions in VO and V2O3 have different charges based on the number of electrons they are able to donate to the oxygen ions. In VO, the charge on the vanadium ion is +2, while in V2O3, the charge on the vanadium ion is +3.

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Approximately 8,880 J of energy would need to be removed from 10 mol of the mixture to go from 500 K to 300 K.

The weighted average heat capacity of the air mixture is approximately 29.6 J/(mol·K). Therefore, to go from 500 K to 300 K, approximately 8,880 J of energy would need to be removed from 10 mol of the mixture.

To calculate the weighted average heat capacity, we consider the mole fraction of each component and their respective heat capacities. Given that air is 21% oxygen (O₂) and 79% nitrogen (N₂) on a mole percent basis, we can calculate the mole fraction of each component. The mole fraction of oxygen is 0.21, and the mole fraction of nitrogen is 0.79.

The heat capacity of oxygen is 29.3 J/(mol·K), and the heat capacity of nitrogen is 29.1 J/(mol·K). To find the weighted average heat capacity, we multiply the mole fraction of each component by its respective heat capacity, and then sum the results:

Weighted average heat capacity = (0.21 * 29.3 J/(mol·K)) + (0.79 * 29.1 J/(mol·K))

                           = 6.153 J/(mol·K) + 22.989 J/(mol·K)

                           = 29.142 J/(mol·K) ≈ 29.6 J/(mol·K)

Now, to find the energy that needs to be removed from 10 mol of the mixture to go from 500 K to 300 K, we can use the formula:

Energy = n * ΔT * C

Where:

n is the number of moles (10 mol),

ΔT is the change in temperature (500 K - 300 K = 200 K),

C is the weighted average heat capacity (29.6 J/(mol·K)).

Plugging in these values, we have:

Energy = 10 mol * 200 K * 29.6 J/(mol·K)

      = 59,200 J ≈ 8,880 J

Therefore, approximately 8,880 J of energy would need to be removed from 10 mol of the mixture to go from 500 K to 300 K.

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A beam of light has a wavelength of 280 nanometers. The frequency of the light is  1.07 × 10¹⁵ Hz.

the information in the question is given as :

wavelength of beam of light = 280 nm

the relation between the frequency and the wavelength is given as :

F = c / λ

where,

F = frequency of the light

c = speed of light

λ = wavelength of light

speed of light , c is = 3 × 10⁸ m/s

substituting all the value in the formula for the frequency, we get:

F = c / λ

F =  3 × 10⁸  / 280 × 10⁻⁹

F = 0.0107 × 10¹⁷ Hz

F = 1.07 × 10¹⁵ Hz

Thus, A beam of light has a wavelength of 280 nanometers. The frequency of the light is  1.07 × 10¹⁵ Hz.

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Answer:

c.

Explanation:

One of the main differences between an atom and an element is that an atom can be combined but an element cannot be combined. There are many combinations of atoms that make up different gases, liquids, and solids each with a unique makup. For example, water is made up of two hydrogen atoms and one oxygen atom (H20). Elements are made up of only the same type of atom. For example, the element Hydrogen can only contain hydrogen atoms, while the element Carbon can only contain carbon atoms.

The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.

The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.

Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.

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Answer:

...

Explanation:

Answer:

A. It makes the edges of the rock more jagged over time.

Explanation:

Abrasion makes rocks with sharp or jagged edges smooth and round. If you have ever collected beach glass or cobbles from a stream, you have witnessed the work of abrasion.

Explanation:

they are located in the neucleus

Answer: they are located in the neucleus

Explanation: