Which of the following must be true of a particle to allow
it to dissolve in water?

A. It must have areas of neutral charge.
B. It must have a nonpolar covalent bond.
C. It must have a full or partial charge.
D. It must have the ability to form London dispersion forces.

Answer:

you can use the formula for heat capacity to calculate the change in temperature:

Q = m * c * ΔT

where Q is the heat added, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature.

Plugging in the values given, we get:

10 J = 0.002 kg * 0.129 J/(g·°C) * ΔT

Simplifying and solving for ΔT, we get:

ΔT = 10 J / (0.002 kg * 0.129 J/(g·°C))

ΔT = 308.53 °C

Therefore, the temperature of the gold increases by approximately 308.53 °C when 10 J of heat is added to 2 g of gold.

C2H4 is the limiting chemical because the ratio of C2H4 to O2 is below the stoichiometric ratio.and the reaction's percent yield is 40.7%.

The limiting reagent or reactant in a chemical process is the one that controls how much product is created. Because elements and compounds respond in an equilibrium chemical formula according to their mole ratios, a limiting reactant is necessary.

C2H4 + O2 CO2 + H2O can be used to calculate the limiting reagent and percent output.

C2H4 has a mass of 170.9 g.

O2 has an overall volume of 52.75 L.

The amount of CO2 generated is 64.1 g.

Calculating the amounts (in moles) of each reactant and comparing them to the stoichiometric ratio in the balanced solution will help us identify the limiting reagent.

The molecular mass of C2H4 can be used to determine how much is present:

17.9 g C2H4 divided by (2 x 12.01 g/mol + 4 x 1.01 g/mol) results in 3.58 mol C2H4.

The ideal law of gases can be used to determine the quantity of O2:

PV/RT equals (1 atm)(52.75 L)/(0.0821 L atm/mol K)(298 K) = 2.16 mol O2 for n(O2).

Then, C2H4:O2 = 3.58 mol; 2.16 mol; 1.66 mol; 1

C2H4 to O2 stoichiometric ratio is 1 to 3.

C2H4 is the limiting reactant because the ratio of C2H4 to O2 is lower than the stoichiometric ratio. This implies that the O2 will exhaust itself completely before the C2H4 does as well.

We can use the mole fraction of C2H4 to CO2 in the balanced equation to calculate the potential yield of CO2:

1 mol C2H4 results in 1 mol CO2.

Theoretically, 3.58 mol C2H4 1 mol CO2/1 mol C2H4 44.01 g/mol = 157.3 g CO2 is the output of CO2.

To determine the percent yield, multiply the result by 100% after dividing the real yield by the theoretical yield:

(Actual yield / Theoretical yield) / 100% = Percent return

The amount of CO2 that actually occurred is 64.1 g. The percent yield is therefore: Percent yield = (64.1 g/157.3 g) 100% = 40.7%

As a result, C2H4 serves as the limiting reactant, and the reaction's percent yield is 40.7%.

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The dry hydrogen gas would occupy 0.152 L at 1 atm and 298 K when solving with the combined gas equation.

It is a mathematical expression that states the relationship between the pressure, volume, and temperature.

The gas equation can be stated as:

                                           (P₁V₁)/T₁ = (P₂V₂)/T₂

To solve this problem, we need to use the combined gas law:

We are given the initial pressure (707.3 Torr), but we need to calculate the initial volume and temperature of the hydrogen gas.

P_total = P_H₂ + P_H₂O

where P_H₂ is the pressure of the hydrogen gas and P_H₂O is the vapor pressure of water at 10 °C (9.21 Torr).

P_total = 707.3 Torr

P_H₂O = 9.21 Torr

So, P_H₂ = P_total - P_H₂O = 698.09 Torr

Converting the volume of hydrogen gas collected to the volume at standard temperature and pressure (STP) using the following equation:

V₂ = V₁(P₁/P₂)(T₂/T₁)

Solving for V₁ by rearranging the equation:

V₁ = V₂(P₂/P₁)(T₁/T₂)

Converting the volume of hydrogen gas collected to liters:

V₂ = 125 mL = 0.125 L

Next, we can putting in the values we know:

P₁ = 698.09 Torr

P₂ = 1 atm = 760 Torr

T₂ = 298 K

We can solve for T₁ by using the ideal gas law:

PV = nRT

T = PV/nR

Calculating the number of moles of hydrogen:

n = m/M

n = 0.4 g / 65.38 g/mol = 0.006118 mol

Now we can put in the values we know into the ideal gas law:

T₁ = (P₁V₁)/(nR)

= (698.09 Torr)(0.125 L)/(0.006118 mol)(0.08206 L·atm/mol·K)

= 343.2 K

Finally, we can solve for V₁:

V₁ = V₂(P₂/P₁)(T₁/T₂)

= (0.125 L)(760 Torr/698.09 Torr)(343.2 K/298 K) = 0.152 L

Therefore, the dry hydrogen gas would occupy 0.152 L at 1 atm and 298 K.

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Na2CO3(aq) and H2O are produced by the reactions CO2(aq) + NaOH(aq) and CO2(aq) + 2NaOH(aq). (l) When carbon dioxide is dissolved in a sodium hydroxide aqueous solution,

Definition. In an aqueous solution, liquid water acts as the solvent. In other words, water molecules surround and incorporate the ions and molecules that make up the solute (dissolved) into their network of links. The dissolved organisms then spread out throughout the water.

Water and one or more dissolved substances make up aqueous solutions. In an aqueous solution, solids, gases, or other liquids can all dissolve. For a combination to be taken seriously as a solution, it must be stable.

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They are all formed from ancient organic material that was buried under many layers of sediment and not allowed to decay.

What are organic materials?

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Von Helmont think that plants get their nourishment from soil because he concluded an experiment and watered the plant after which he came to know that.

Plant growth is the ability of a plant to develop its roots in length, sets in length, and breadth in girth. Plant growth occurs in four phases. These stages are as follows...

Plant seeding, germination, and seedling formation all increase.

John Baptista van Helmont (1580-1644) contributed to the understanding of photosynthesis. He planted a willow tree in a measured amount of dirt. After five years, he observed that the willow tree weighted around 74 kg more than it did when he first planted it. Van Helmont decided that plant development could not be solely attributable to soil minerals because the weight of the soil had scarcely altered. He assumed that the increased plant material had come only from the water.

For the first time, this invalidated the Ancient Greeks' earlier idea that plants grew bulk by absorbing minerals from the earth. Van Helmont was the first to put this theory to the test and discover it to be false.

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Answer: B

Explanation:

dicarbon means 2 carbons

Heptoxide = hept means 7

thus C2O7

Answer: 3045.07 K

Explanation:

T=PV/nR  = 10.00 X 100 / (4.0 X 0.821) =

Answer:

First, we need to calculate the molarity of the solution:

Molarity = moles of solute / liters of solution

We know the mass of solute (5.00 g) and the volume of solution (20.0 mL = 0.0200 L). To find the moles of solute, we need to divide the mass by the molar mass of NaCl:

moles of NaCl = 5.00 g / 58.44 g/mol = 0.0855 mol

Now we can calculate the molarity:

Molarity = 0.0855 mol / 0.0200 L = 4.28 M

The molarity of the solution is less than the molarity of a saturated NaCl solution at room temperature (5.98 M), so the solution is unsaturated.

With the substance's molar mass in hand, we can use a periodic table or chemical database to look up potential candidates.

We must know the substance's molar mass in order to identify it. By dividing the mass of the sample by the number of moles in the sample, we may determine the molar mass:

Molar mass is equal to the mass of the sample divided by the number of moles.

100 g molar mass = 0.4892767658 mol

204.54 g/mol for the molar mass

With the substance's molar mass in hand, we can use a periodic table or chemical database to look up potential candidates. The substance might be sodium chloride (NaCl), calcium phosphate (Ca3(PO4)2), or many other chemicals with a comparable molar mass, depending on the molar mass.

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Consequently, 4.50 milligrams of KCl yields 216 g of O2 from 4 moles of KClO3, which in turn produces 6 mole of O2. Potassium chloride is created in amounts of 0.0408 mol KCl.

A suspicious mole, on the other hand, is asymmetrical, that means that when it is split in half, its two sides have a different appearance. The typical characteristic of benign moles is circular borders. Wavy borders are frequently seen on moles that have malignancy. If the border isn't smooth, get your belongings out of there.

2 mol KClO3 / 3 mol O2, which equals 4 mol KClO3 / x.

The answer to the equation for x is: x = (3 mol O2 4 mol KClO3) / 2 mmol KClO3 = 6 mol O2.

As a result, 4 moles ions KClO3 result in 6 moles of O2.

2.50 mol KClO3 / 2.50 mol KCl = 2.50 mol KClO3 / x

The  to the equation for x is: x = (2 mol KCl 4.50 mol KClO3) / 2 mol KClO3 = 4.50 mol KCl.

We can calculate the amount of O2 produced using the mole fraction of KClO3 to O2 now that we know humans have 4.50 mole of KCl:

2.50 mol KClO3/3.0 mol O2 ≈ 4.50 mol KClO3/x

In order to find x, we must divide 3 mol O2 by 4.50 mol KClO3 and 2 mol KClO3 by 6.75 mol O2.

In order to translate from moles to grams, we can utilize the molecular concentration of oxygen:

216 g O2 is produced by multiplying 6.75 mol O2 by 32.00 g/mol.

Hence, 216 g of O2 are created from 4.50 moles of KCl.

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Answer:

I'm pretty sure its A

Explanation:

I hope this helps

Explanation:

If there were tides on Jupiter, the moon with the greatest influence on the Jupiter tides would be the moon with the greatest mass and closest distance to Jupiter.

The number of the moles of hydrogen must be removed from the vessel to increase the concentration of nitrogen to 1. 1 M is 0.334 mol.

The chemical equation is as follows :

                 N₂ (g)      +  3H₂ (g)  ⇄   2NH₃ (g)

Initial        1.00 M   0.50 M     0.25 M

Change   + 0.1                        -0.1 M

Eq.             1.1 M        x               0.05 M

The equilibrium concentration is as :

Kc = [NH₃]² / [  N₂ ] [H₂]³

Kc = (0.25)² / (1) (0.50)³

of Kc = 0.50

Kc = [NH₃]² / [  N₂ ] [H₂]³

0.50 = (0.05)² / (1.1) (x)³

x = 0.166 M

The number of the moles of the hydrogen removed = 0.50 - 0.166

The number of the moles of the hydrogen removed = 0.334 mol of H₂.                        

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Indeed, 2N + 2H results from n2 + 3H2.An oxidation reaction is a process that involves chemical addition of oxygen, and a reduction reaction is a process that involves a removal of oxygen.

Redox reactions are those in which there is a change in the oxidation number, with both a gain and a drop in number.The reaction called non-redox if this fails to take place.

You must figure out each atom's oxidation values prior to and following the reaction in order to identify what happens toward which elements inside a redox reaction.The prospective charge of the an atom in its cationic state is represented by oxidation numbers.In a reaction, an atom is reduced if its oxidation number falls.

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Answer:

Zn + 2HCl => ZnCl2 + H2

Explanation:

Zn + 2HCl => ZnCl2 + H2

1 Zn +

2 HCl =>

1 ZnCl2 +

1 H2

0.5 moles of NH3 will form from the complete reaction of 14.0 g of N2.

Mole is a unit of measurement used to measure the amount of a substance. It is defined as the number of atoms, molecules, ions, or other particles present in a given sample of a substance. The mole is an important concept in chemistry because it allows for direct comparison of the relative amounts of substances in a reaction. It is also used in physics to calculate the number of particles in a given volume. The mole is a base unit in the International System of Units (SI), and its symbol is "mol".

The number of moles of NH3 produced from 14.0 g of N2 can be determined using the following equation:
moles NH3 = (14.0 g N2) / (28.0 g/mol N2) x (1 mol NH3 / 3 mol H2)
moles NH3 = 0.5 mol NH3
Therefore, 0.5 moles of NH3 will form from the complete reaction of 14.0 g of N2.

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Answer:

To determine the formula mass of the gas, we can use the ideal gas law:

PV = nRT

where P is the pressure of the gas, V is the volume of the container, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature of the gas in Kelvin.

First, we need to convert the given temperature of 27°C to Kelvin:

T = 27°C + 273.15 = 300.15 K

Next, we can rearrange the ideal gas law to solve for the number of moles of gas:

n = PV/RT

where P = 300.0 kPa, V = 25.0 L, R = 8.31 J/(mol·K), and T = 300.15 K.

n = (300.0 kPa)(25.0 L)/(8.31 J/(mol·K) x 300.15 K) ≈ 30.12 mol

Now, we can calculate the molar mass (formula mass) of the gas using its mass and the number of moles:

molar mass = mass / number of moles

where the mass is given as 96.0 g.

molar mass = 96.0 g / 30.12 mol ≈ 3.19 g/mol

Therefore, the formula mass of the gas is approximately 3.19 g/mol.

Explanation:

Answer:

3.19

Explanation:

The answer is (A), Greater growth and activity are seen in plants during Florida's spring season, which is mainly caused by a combination of two environmental factors: longer daylight hours and warmer temperatures.

The Atlas of Florida Vascular Plants estimates that Florida is home to more than 4,200 plant varieties that are not grown in cultivation. Nearly 3,000 of those 4,200 species are regarded as local. The bulk of plants are terrestrial, or land-based.

One of the cheeriest plants you can cultivate in your garden is the coreopsis, the official state flower of Florida. However, plant breeders have been hard at work and you can now find choices with single or double flowers, or blooms in hues of gold, yellow, and even orange, red, and pink.

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Answer:

The percentage of zinc in the compound; Zn3(PO4)2 is 50.65%.

Answer:

735,000

Explanation:

75 × 9.8

Answer:

The three essential nutrients needed by organisms are:

Carbohydrates: Carbohydrates are the primary source of energy for the body. They are found in foods like bread, pasta, rice, fruits, and vegetables.

Proteins: Proteins are essential for the growth and repair of tissues in the body. They are found in foods like meat, fish, eggs, dairy products, beans, and nuts.

Fats: Fats are important for energy storage, insulation, and protection of vital organs in the body. They are found in foods like oils, butter, cheese, nuts, and fatty fish.

It is important to note that these three nutrients alone are not enough for a healthy diet. Other important nutrients include vitamins, minerals, and water, which can be obtained from a balanced and varied diet.

Answer:

1,915 kilometres above Saturn's surface

The 700 meter's high above Saturn's surface is the Cassini satellite.

What is Saturn?

It is a gas giant with a typical radius that is roughly nine times that of the Earth. Although having only one-eighth the density of the Earth on average, Saturn is nearly 95 times more massive due to its enormous bulk.

The most ambitious planetary space exploration project ever launched is the Cassini mission to Saturn. The Cassini mission, a collaboration between NASA, the European Space Agency (ESA), and the Italian space agency Agenzia Spaziale Italiana (ASI), launched an advanced robotic spacecraft into orbit around the ringed planet.

Therefore, The 700 meter's high above Saturn's surface is the cassini satellite.

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The statement "Positive ∆H means that the reaction tends to go forwards. Negative ∆H means that the reaction tends to go in reverse" is generally true.

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The total mass of the reactants equals total mass of the products, means there is no change in mass during a chemical reaction.

This is due to the law of conservation of mass, which states that the total mass of a system does not change regardless of variations in its components. For mass cannot be created or destroyed, rearranged, or only moved.

In chemical reaction, atoms has rearranged itself to form a new molecules, but the total mass remains the same. It is because the total mass of reactants and products is sum of masses of each atom involved.

So, in any chemical reaction, the total mass of reactants and products remains the same because mass is conserved.

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Carbs are not negated by fibre, but high-fiber diets are normally digested more slowly, decreasing the likelihood that they will be stored as body fat.

A high-fiber diet seems to lower the chance of acquiring a number of illnesses, including colon cancer, diverticular disease, heart disease, diabetes, and diverticular disease. Fiber is crucial for decreasing cholesterol and maintaining intestinal health.

All three forms of carbohydrates—sugar, starch, and fiber—are listed as total carbohydrates on the label. Whether calculating your carb intake or selecting which items to include, it's critical to use the total grammes.

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The strength of the ionic bond is directly dependent upon the quantity of the charges and inversely dependent on the distance between the charged particles. A cation with a 2+ charge will make a stronger ionic bond than a cation with a 1+ charge.

The amount of electrons an atom gains or loses when it forms an ion determines the strength of the ionic charge. An atom becomes positively charged when an electron is lost, and negatively charged when an electron is gained.

The ionic charge increases with the amount of electrons lost or acquired. An ion that has lost two electrons, for instance, will have a higher positive charge than one that has lost only one. Similar to this, an ion with three electrons obtained will have a higher negative charge than one with only one.

Answer: " I have one mole of baseballs "

Explanation: