Cations are formed when neutral atoms lose neutrons positrons protons electrons

Answer:

d an acid - base reaction.

Explanation:

Answer:

single replacement

Explanation:Look it up and got it from quizlet it should be right.

On Acids and Bases:

1. pH = -log[H⁺] = -log(1 x 10⁽⁻³⁾) = 3

2. pOH = -log[OH⁻] = -log(1 x 10⁽⁻⁸⁾) = 8

3. [H+] = 1 x 10⁽⁻¹⁴⁾/[OH-] = 1 x 10⁽⁻¹⁴⁾/(1 x 10⁽⁻¹³⁾) = 0.1 M

pH = -log[H⁺] = -log(0.1) = 1

4. pOH = -log[OH⁻] = -log(1 x 10⁽⁻⁹⁾) = 9

pH + pOH = 14

pH = 14 - pOH = 14 - 9 = 5

5. [H⁺] = 10^(-pH) = 10⁽⁻³⁾ M

6. [OH⁻] = 10^(-pOH) = 10⁽⁻²⁾ M

7. [H⁺] = 10^(-pOH) = 10⁽⁻¹³⁾ M

8. [OH⁻] = 10^(-pH) = 10⁽⁻⁴⁾ M

9. [OH⁻][H⁺] = 1 x 10⁽⁻¹⁴⁾

[OH⁻] = 1 x 10⁽⁻¹⁴⁾/[H+] = 1 x 10⁽⁻¹⁴⁾)/(1 x 10⁽⁻⁴⁾) = 1 x 10⁽⁻¹⁰⁾ M

10. [H⁺][OH⁻] = 1 x 10⁽⁻¹⁴⁾

[H⁺] = 1 x 10⁽⁻¹⁴⁾/[OH-] = 1 x 10⁽⁻¹⁴⁾/(1 x 10⁽⁻²⁾) = 1 x 10⁽⁻¹²⁾ M

11. pH + pOH = 14

pOH = 14 - pH = 14 - 6 = 8

12. pH + pOH = 14

pH = 14 - pOH = 14 - 12 = 2

13. pH < 7, so the solution is acidic.

14. pOH < 7, so the solution is basic.

15. An indicator is a substance that changes color depending on the pH of the solution.

16. According to the Bronsted-Lowery theory, an acid is a substance that donates a proton (H⁺) and a base is a substance that accepts a proton (H⁺).

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Answer:A

Explanation:

Answer:

m

Explanation:

Note that the diagrammatic representation of all the phases of water is attached accordingly.

The processes involved in the changes between gas, solid, and liquid states of matter are:

The changes between gas, solid, and liquid states can be brought about by altering temperature and/or pressure.

For example, decreasing the temperature and/or increasing the pressure can cause a gas to become a liquid or a solid, while increasing the temperature and/or decreasing the pressure can cause a solid or liquid to become a gas. Other factors such as intermolecular forces and molecular structure can also affect the state of matter.

Note that the four phases of matter are gas, solid, liquid, and plasma. In the gas phase, molecules are far apart and move quickly.

In the solid phase, molecules are tightly packed and vibrate in place. In the liquid phase, molecules are close together and move randomly. Plasma is a high-energy state of matter that consists of ionized particles.

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Answer:

              9.92 g of Cl

Explanation:

Well first find out the molar mass of calcium hypochlorite.

The molecular formula is,

                                          CaO₂Cl₂

Adding the atomic masses we get the molar mass = 142.98 g/mol

This means,

                                 142.98 f of CaO₂Cl₂ = 70.91 g of Cl

Therefore,

                                       20 g of CaO₂Cl₂ = X

Solving for X,

               X = (70.91 g of Cl × 20 g of CaO₂Cl₂) ÷ 142.98 f of CaO₂Cl₂

               X = 9.92 g of Cl

Answer:

Vacuum

Explanation:

The refractive index is usually found by finding the ratio between the speed of light in a vacuum and the speed of light in the given medium (glass in this case).

Hope this helped!

The refrigerator would use 180 kilowatt-hours (kWh) of electric energy over the course of 30 days, assuming it runs for 12 hours each day.

To calculate the kilowatt-hours (kWh) of electric energy used by the refrigerator in 30 days, we need to multiply the power rating by the total running time.

Given:

Power rating of the refrigerator = 500 W

Running time per day = 12 hours

Number of days = 30

First, we need to convert the power rating from watts to kilowatts:

Power rating = 500 W / 1000 = 0.5 kW

Next, we calculate the total energy used in kilowatt-hours (kWh) over the 30-day period:

Energy used = Power rating × Running time × Number of days

Energy used = 0.5 kW × 12 hours/day × 30 days

Energy used = 180 kWh

Therefore, the refrigerator would use 180 kilowatt-hours (kWh) of electric energy over the course of 30 days, assuming it runs for 12 hours each day.

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Answer:

in this reaction more reactive mg is replacing

less reactive h. hence it is dipalcement reaction.

Explanation:

hope its hepl you

please mark brainlist.

Answer:

gravitational potential energy doesnt change srry the other one as in explaining it

The Ph will likely change by more than one unit, more than one ph unit. The buffer capacity, or the ability of a solution to resist changes in pH when an acid or base is added, is greatest when the concentration of both the weak acid and the weak base are high and the pH is close to the pKaa value.

If the initial pH is 5.5 and a strong base is added, causing the pH to increase to 6.5, the amount of base required will depend on the initial concentrations of the weak acid and weak base present. As the pH moves further away from the pKa value and the concentration of the weak acid decreases, the buffer capacity will decrease and the pH will increase more than one unit.

The missing part in the question is shown below.

Enough acid or base has been added to a pH 5.5 buffer to raise the pH to 6.5. If that same amount of acid or base is added again; the pH will likely change by: Select the correct answer below:

A. less than one unit

B. more than one unit

C. precisely one unit

D. impossible to tell

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Answer:

???

Explanation:

Answer:

Explanation:

(4) A does not burn in air, and B does burn in air is your answer. Flammability is a chemical property while the rest of these are physical properties.

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Answer:

750 g of CO₂

Explanation:

The balanced equation for the reaction is given below:

C₃H₈ + 5O₂ —> 3CO₂ + 4H₂O

Next, we shall determine the mass of C₃H₈ that reacted and the mass of CO₂ produced from the balanced equation. This can be obtained as follow:

Molar mass of C₃H₈ = (12×3) + (8×1)

= 36 + 8 = 44 g/mol

Mass of C₃H₈ from the balanced equation = 1 × 44 = 44 g

Molar mass of CO₂ = 12 + (16×2)

= 12 + 32 = 44 g/mol

Mass of CO₂ = 3 × 44 = 132 g

SUMMARY:

From the balanced equation above,

44 g of C₃H₈ reacted to produce 132 g of CO₂.

Finally, we shall determine the mass of CO₂ produced by the reaction of 250 g of C₃H₈. This can be obtained as follow:

From the balanced equation above,

44 g of C₃H₈ reacted to produce 132 g of CO₂.

Therefore, 250 g of C₃H₈ will react to produce = (250 × 132)/44 = 750 g of CO₂.

Thus, 750 g of CO₂ were obtained from the reaction.

The number of grams of carbon dioxide should be 750 grams.

Since

The balanced equation for the reaction is

C₃H₈ + 5O₂ —> 3CO₂ + 4H₂O

Now

Molar mass of C₃H₈ = (12×3) + (8×1)

= 36 + 8 = 44 g/mol

Hence, Mass of C₃H₈ from the balanced equation = 1 × 44 = 44 g

Now

Molar mass of CO₂ = 12 + (16×2)

= 12 + 32 = 44 g/mol

Hence, Mass of CO₂ = 3 × 44 = 132 g

Now the no of grams should be

= (250 × 132)/44

= 750 g of CO₂.

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The cellular organelle that is most affected by CO poisoning is mitochondria (option B).

Mitochondria is a cellular organelle found in eukaryotic cells and responsible for the production of energy in form of ATP.

Carbon monoxide (CO) is a common environmental pollutant released when fossil fuels are burned. The major target of this pollutant is the mitochondria.

Carbon monoxide (CO) binds to cytochrome oxidase of the electron transport chain in the mitochondria, thereby, blocking oxidative phosphorylation and ATP production. As ATP declines, there is no energy to drive the breathing muscles.

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Given the Latin meaning of the cogito, we can confirm that it is roughly translated and summarized by the phrase "I think, therefore I am".

Cogito, ergo sum or "The Cogito" is an extremely popular, well-known philosophical phrase credited to Rene Descartes. This Latin phrase is roughly translated as "I think, therefore I am", which appeared originally in "The Principles of Philosophy", and was later translated to a variety of languages in an attempt to reach a wider public, most notably into Latin.

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According to NOAA experts, invasive lionfish populations will keep expanding and cannot be controlled by traditional means.

A marine species known as a "lionfish" has stripes that resemble zebra stripes and is typically red, brown, and white. In their non-native area, there are two different but outwardly identical species, however around 97 percent of them are red lionfish.

Regrettably, NOAA scientists have determined that invasive lionfish populations will keep expanding and cannot be controlled by traditional means.

Thus, They are predators that eat tiny crustaceans and juvenile fish, including snapper and grouper, two important commercial fish species.

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a) Melting: An example of melting that occurs in our everyday life is when we heat butter on a stovetop.

b) Freezing: Freezing is the process in which a liquid transforms into a solid upon cooling.

c) Condensation: One example of condensation that we encounter regularly is when water droplets form on the surface of a cold drink on a hot day.

d) Evaporation: Evaporation is the process by which a liquid transforms into a gas or vapor.

e) Sublimation: Sublimation refers to the transformation of a substance directly from a solid to a gas without passing through the liquid state.

a) Melting:  Butter is a solid at room temperature, but when heat is applied, it melts into a liquid. This change is a result of the increase in temperature, which provides enough energy to overcome the intermolecular forces holding the butter molecules together.

b) Freezing:Eventually, the temperature reaches the freezing point of water (0°C or 32°F), at which the water molecules slow down and arrange themselves into a regular, crystalline structure. This transformation from a liquid to a solid state is accompanied by the release of heat energy.

c) Condensation: As the temperature decreases, the air's capacity to hold moisture decreases, causing the water vapor in the air to condense into liquid water droplets. This process occurs due to the transfer of heat energy from the warm air to the cold surface, leading to the saturation of the air and the conversion of water vapor into liquid form.

d) Evaporation:  As the sun's heat energy is absorbed by the water molecules on the clothes' surface, their kinetic energy increases, causing them to break free from the liquid phase and escape into the surrounding air as water vapor. This process occurs because the molecules at the liquid surface with sufficient energy can overcome the attractive forces within the liquid and enter the gas phase.

e) Sublimation: Sublimation refers to the transformation of a substance directly from a solid to a gas without passing through the liquid state. An example of sublimation is the process of dry ice (solid carbon dioxide) converting into carbon dioxide gas.

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Answer:

The reason is carbon's ability to form stable bonds with many elements, including itself. 

Explanation:

This property allows carbon to form a huge variety of very large and complex molecules. In fact, there are nearly 10 million carbon-based compounds in living things!

Answer:

Explanation:

The reason is that carbon is able to form stable bonds with many elements, including itself, which allows carbon to form a huge variety of very large and complex molecules.

The most acceptable electron-dot structure for carbonyl fluoride, COF2, shows that the central atom is C, which is doubly-bonded to O.

In the electron-dot structure for COF2, we first identify the total number of valence electrons for the atoms involved. Carbon has 4 valence electrons, while each fluorine has 7 valence electrons, and oxygen has 6 valence electrons. Adding these up, we get a total of 24 valence electrons for COF2.

Next, we arrange the atoms such that the carbon atom is in the center, and the two fluorine atoms are bonded to it. We then draw single bonds between each fluorine atom and the carbon atom, using 4 valence electrons. This leaves us with 16 valence electrons. To satisfy the octet rule for the oxygen atom, we draw a double bond between each oxygen atom and the carbon atom, using 8 valence electrons. This leaves us with 0 valence electrons remaining, which means that we have successfully accounted for all 24 valence electrons.

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Answer:

The chemical formula for potassium sulfide is K2 S. Sulfur atoms need two electrons to fill their 3p electron orbitals.

Explanation:

The chemical formula when  a potassium ion  and a sulfide ion unite is K₂S which is potassium sulfide.

Chemical  formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols  of elements. It also makes use of brackets and subscripts.

Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form  is called empirical formula.

It is not the same as structural formula and does not have any information regarding structure.It does not provide any information regarding structure of molecule as obtained in structural formula.

There are four types of chemical formula:

1)empirical formula

2) structural formula

3)condensed formula

4)molecular formula

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Answer:

Sugar

Explanation:

The carbon is in form of sugar prior to the lion eating the giraffe. This form of carbon in the giraffe serves as a rich source of nutrient for the lion.

The carbon enters living organisms as carbon dioxide. As it enters, it is converted by plants into glucose, a from of sugar.

When giraffes eats the glucose in plant, it is stored in them and used for the liberation of energy

This same stored chemical energy in the giraffe is taken up by the lion.

The equilibrium vapor pressure with respect to water (eow) is 259.9 Pa. assume that saturation vapor pressure is same as equilibrium vapor pressure.

Therefore, the RH at the frost point is  

RH = (eow / saturation vapor pressure) × 100

= (259.9 Pa / 259.9 Pa) × 100

= 100%

b) At T = -11 °C, we need to compare the equilibrium vapor pressure with respect to water (eow) and the equilibrium vapor pressure with respect to ice (coi) to determine if ice particles will form. From the given table, at T = -11 °C, the equilibrium vapor pressure with respect to water (eow) is 237.7 Pa, and the equilibrium vapor pressure with respect to ice (coi) is 165.3 Pa.

The air is supersaturated with respect to ice, and the presence of Kaolinite particles can provide surfaces for water droplets to condense onto, leading to the formation of ice particles.

c) At T = -12 °C, we compare the equilibrium vapor pressure with respect to water (eow) and the equilibrium vapor pressure with respect to ice (coi). From the given table, at T = -12 °C, the equilibrium vapor pressure with respect to water (eow) is 217.3 Pa, and the equilibrium vapor pressure with respect to ice (coi) is 181.2 Pa.

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In IR the stronger absorption supports the synthesis of the trans isomer rather than the cis isomer

In NMR signal between 13-16 Hz supports the synthesis of the trans isomer rather than the cis isomer

In proton NMR, with the help of the J-coupling constant, we can differentiate between the cis and trans isomers. If the J-coupling constant of the unsaturated protons appears between 13-16 Hz, it is a trans isomer. If the J-coupling constant of the unsaturated protons appears between 10-12 Hz, it is a cis isomer.

In IR, as we know that IR absorptions depend on the dipole moments. Trans isomers have low dipole moments so less absorption occurs. while Cis isomers have high dipole moment so high absorption occurs.

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Answer:

C

Explanation:

Actually, arranged to the size of smallest to least atom radius size = C

Atomic sizes generally get smaller as you go from L to R across a row of the periodic table.

700.4 K is the e new temperature needed for the gas to increase its volume to 30.5 L at a constant pressure which is determined using  Charle's law.

The initial volume of gas = 10.81 L

Temperature -25°C

The final volume of gas = 30.5 L

Here we can use Charle's law because of changes in the volume and temperature of a gas at constant pressure.

The relation between volume and temperature is written as:

V1/T1 = V2/T2

We need to convert the temperature from the Celsius scale to the Kelvin scale.

T1 = -25°C + 273.15

T1 = 248.15 K

Substituting the values, we get:

V1/T1 = V2/T2

T2 = (V2 * T1) / V1

T2 = (30.5 L * 248.15 K) / 10.81 L

T2 = 700.4 K

Therefore, we can infer that the new temperature needed is 700.4 K.

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The mass of the liquid orange juice is 210 grams.

To calculate the mass of the liquid orange juice, we can use the formula:

Mass = Volume × Density

Given that the volume of the liquid orange juice is 175.0 ml and its density is 1.20 g/ml, we can substitute these values into the formula:

Mass = 175.0 ml × 1.20 g/ml = 210 grams

Therefore, the mass of the liquid orange juice is 210 grams.

The density of a substance is defined as its mass per unit volume. In this case, we are given the density of the liquid orange juice in both its liquid and frozen states. By using the formula for mass, which is the product of volume and density, we can calculate the mass of the liquid orange juice. The given volume of 175.0 ml and the corresponding density of 1.20 g/ml allow us to determine that the mass of the liquid orange juice is 210 grams.

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Answer:

i dont knoq

Explanation:

sorry that i couldnt help you

The thermal velocity of the atom in the given atmosphere would be approximately 2044.35 m/s.

The thermal velocity of an atom can be calculated using the formula:

v = sqrt((3kT) / m)

Where:

v is the thermal velocity of the atom,

k is the Boltzmann constant (1.38 x 10^-23 J/K),

T is the temperature in Kelvin,

m is the mass of the atom.

In this case, we have a temperature of 290.00 K and the atom is 4.00 times more massive than hydrogen. Let's assume the mass of a hydrogen atom is approximately 1 atomic mass unit (u) or 1.67 x 10^-27 kg.

The mass of the atom in question would be 4.00 times the mass of hydrogen, which is 4.00 * 1.67 x 10^-27 kg = 6.68 x 10^-27 kg.

Plugging these values into the formula, we get:

v = sqrt((3 * 1.38 x 10^-23 J/K * 290.00 K) / (6.68 x 10^-27 kg))

Calculating the thermal velocity gives:

v ≈ 2044.35 m/s

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