A tin can has a density of 7.28 g/mL and a volume
of 300.1 mL. What is the mass of the tin can?

Answer:

uno

Explanation:

uno uno unooo no no Bruno capaso

Answer:

Meter.

Explanation:

A foot is a American standard. Inch is also. A Mile is for a American. Kilometers are the metric. That leaves only the Meter.

5.0 mL of 0.10 M solution of NaOH is added to 30.0 mL of buffer solution of acetic acid (0.093 M) and sodium acetate (0.12 M). So, the pH of the new solution is 4.72

The balanced chemical equation of reaction :

     CH₃COOH +H₂O → H₃O⁺ + CH₃COO⁻

kₐ = [H₃O⁺] [CH₃COO⁻] / [CH₃COOH] [H₂O]

[H3O+] = kₐ X [CH3COOH] / [CH3COO-] → 1

Let's consider the concentration of H₃O⁺ at equilibrium is x.

So,

Putting the values in equation-1

[H3O+] = ka X [CH3COOH] / [CH3COO-]

x = (1.8 X x 0.00329) / (0.0031)

x = 1.91 X

since, x is the equilibrium concentration of H₃O⁺,

So,

equilibrium concentration of H₃O⁺ = 1.91X

pH = -log 10 [H3O+]

pH = -log 10 [1.91x]

pH =4.72

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Answer:

the answer Is d

Explanation:

Answer:

that would be D

Explanation:

hope this helps

~RayneIsLost~

Answer:

I'm not verified but I do know that HNO3 is a base and a potent acid

Explanation:

It is used as a nitrating agent. because its base is more stable its stronger than nitrous acid HNO3 can be made by the formula NO 2 + H 2O → 2 HNO 3 + NO (the reaction of NO2 with water). it can be used to produce ammonium nitrates to make plastic, dye, and fertilizers, make explosives and a oxidizer in liquid-fueled rocket thrusters.

The property that causes the zinc shavings to react faster than the chunk of zinc is called the surface area.

When performing any type of chemical reaction, the surface area is an important aspect to take into account because it significantly affects the reaction's rate. The rate of reaction increases with decreasing surface area.

When compared to zinc shavings, which have been broken down into zinc particles with smaller surface areas, a chunk of zinc is similar to a body of stone held together by strong bonding.

In comparison to the huge chunk of zinc, the reactive surface area of the zinc shavings is smaller. Reactants' lower surface areas make it necessary for them to be in close contact with the acid solution for the reaction to occur.

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Some examples of Desublimation include

Desublimation is a reverse process of sublimation in which the phase transition of a substance from gas to solid takes place directly without going through the liquid phase.

Desublimation is an example of exothermic phase change that occurs at temperatures and pressures below a substance’s triple point in its phase diagram.

Desublimation is also called as deposition. It occurs mainly by a drastic loss in thermal energy from the surrounding gas due to the presence of a much cooler surface.

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Answer:

they are stable

Explanation:

stable means they donot want to give or to accept electron. so that makes them stable

According to the research, the correct option is C. Amphibians have a closed circulatory system this means fluids are contained in tubes.

Therefore, we can conclude that according to the research, the correct option is C. Amphibians have a closed circulatory system this means fluids are contained in tubes.

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The number of kilometers you travelled in 43.5 minutes is 8.4 Km

Speed is defined as the distance travelled per unit. Mathematically, it can be expressed as:

Speed = distance / time

With the above formula, we can determie the distance (in Km) travelled. Details below.

We'll begin by calculating the distance (in Km) travelled in 21.2 mins. This is shown below:

Speed = distance / time

Cross multiply

Distance = speed × time

Distance = 10.46045 × (21.2 / 60)

Distance = 3.7 Km

Next, we shall obtain the distance (in Km) travelled in 22.3 mins. This is shown below:

Speed = distance / time

Cross multiply

Distance = speed × time

Distance = 12.55254 × (22.3 / 60)

Distance = 4.7 Km

Finally, the total distance travelled can be obtained as follow:

Total distance = 3.7 + 4.7

Total distance = 8.4 Km

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Answer:

Explanation:

1.55e+7

The positively charged hydrogen end of one water molecule pulls the negatively charged oxygen end of another water molecule, forming hydrogen bonds between the two neighboring water molecules.

How does hydrogen bonding work?

Instead of forming a covalent bond with an atom of hydrogen, molecules are attracted to one another by a process known as dipole-dipole attraction.

It is brought about by the attractive attraction between two very electronegative atoms, such as an N, O, or F atom and a hydrogen atom covalently bound to one of them.

Hydrogen bonds may form in any molecule when an oxygen or nitrogen atom is directly connected to a hydrogen atom.

Hydrogen bonds also arise when hydrogen is linked to fluorine.

Since hydrogen bonds are essential for the structure and characteristics of DNA, they play a crucial role in biology.

These bonds are what bind the nucleotide base pairs here on two strands of DNA together.

Hydrogen bonds develop between two water molecules when one's positively charged hydrogen side pulls in the other's negatively charged oxygen end.

the answer is positively and negatively respectively.

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Answer:

1.314E21 atoms

Explanation:

.310 / 142 = .002183

.002183 x 6.02E23 = 1.314E21

Answer: 17, Si

Explanation:

The pumpkin mass 3060 g and weight in Jupiter is 75.9 N . so, the mass of pumpkin in earth is 3060 g and the weight of pumpkin is 30.0 N.

Mass will remain same in every planet but weight changes because of force of gravity. Mass do not change with change in place. Mass is measured as the amount of matter present in body.

mass of pumpkin will not change because the amount of matter does not change. the mass of pumpkin in Jupiter is 3060 g and it will remain same for earth , 3060 g.

Weight of an object is defined as the amount of force acting on a mass due to the acceleration due to gravity.

mass of pumpkin in earth = 3060 g = 3.060kg

Weight (W) = mass of object × acceleration of gravity

                   = 3.060 × 9 .86

                   =  30.0 N

thus,The pumpkin mass in Jupiter is 3060 g and weight in Jupiter is 75.9 N . so, the mass of pumpkin in earth is 3060 g and the weight of pumpkin is 30.0 N.

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By Avogadro's number, the bromine atoms are 2.34 × 10²³ atoms.

We need to know about Avogadro's number to solve this problem. Avogadro's number is the number that explains how many atoms are in one mol. The Avogadro's number is

Na =  6,02 × 10²³ atoms / mol

From the question above, we know that

gr = 31 grams

Mr = 79.9

Find the amount of bromine in moles

n = gr / Mr

n = 31 / 79.9

n = 0.39 mole

By using Avogadro's number, we can calculate how many bromine atoms

N = Na . n

N = 6,02 × 10²³ x 0.39

N = 2.34 × 10²³ atoms

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The chemical equation that follows the law of conservation of mass is as follows: 2LiOH + H₂CO3 → Li₂CO3 + 2H₂O (option D).

The law of conservation of mass states that mass can neither be created nor destroyed.

This law further explains that in a chemical reaction, the amount of mass in the reactants must be equal to the amount of mass in the products.

This means that the chemical equation must be balanced i.e. the number of moles of atoms of each element on both sides of the equation must be the same.

According to this question, the chemical equation that is balanced is 2LiOH + H₂CO3 → Li₂CO3 + 2H₂O, therefore, represents the law of conservation of mass.

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The gravitational force of attraction is 4.2 * 10^23 N.

The gravitational force is a force that acts on objects that are within the earth’s gravitational field. We know that the gravitational force is an attractive force and it acts on the mass as it is in the universe.

The force of gravity has its direction as towards the center of the earth. Knowing that;

F = Gm1m2/r^2

F = gravitational force

G = gravitational constant

M1 and M2 = masses of the objects

Hence;

When one of the masses is multiplied by 2, the magnitude of the gravitational force is doubled.

When the distance of separation is multiplied by 2, the magnitude of the gravitational force decreases by a factor of 4.

Now let us obtain the magnitude of the gravitational force;

F = 6.6743 × 10-11 * 1.90 * 10^27 * 1.99 * 10^30/(7.78 * 10^11)^2

F = 4.2 * 10^23 N

The gravitational force of attraction is 4.2 * 10^23 N.

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A compound has 58. 29 g of oxygen, 4. 20 g of h, and 37. 51 g of carbon. The empirical formula is C6H8O7.

Empirical formulas are those that provide proportions of the constituent elements of a compound but not the precise number or arrangement of atoms.

This can be done by calculating molar ratio of elements using masses and molar masses of the element.

Mass of the Carbon (C) in given compound is= 37.51g

Mass of the Hydrogen (H) in given compound is= 4.20g

Mass of the Oxygen (O) in given compound is= 58.29g

Molar mass of C = 12.0107g

Molar mass of H = 1.00784g

Molar mass of O = 15.999g

by diving the mass of the elements with their respective molar masses we get number of moles of elements:

no. of moles of C= 37.51/12= 3.123moles

no. of moles of H= 4.20/1.00784 =4.167moles

no. of moles of O = 58.29/15.999 = 3.643moles

Molar ratio of elements/atoms can be obtained by diving the above number of moles with the lesser number of moles in the above three,

C= 3.123/3.123

H= 4.167/3.123

O= 3.653/3.123

Each ratio is multiplied by "6" to produce a complete number:

C= 1*6

H= 1.334*6

O= 1.166*6

The empirical formula is= C6H8O7.

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Pressure only affects the solubility of a substance in the gaseous phase, not the liquid or solid phase.

Solubility may be defined as the maximum amount of any substance that will significantly dissolve in a definite amount of solvent at a specified temperature. It is the property of substances that shows their ability to intermingle with other substances known as solvents.

According to the context of this question, liquids and solids exhibit practically no alteration in solubility with respect to changes in pressure. But when you enhance the pressure of a gas phase, the collision frequency between its particles increases, and thus the solubility goes up, as you reduce the pressure, the solubility goes down.

Therefore, the pressure only affects the solubility of a substance in the gaseous phase, not the liquid or solid phase.

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The kinds of things that would you need to survive on a deserted island are as follows:

Survival may be characterized as the process that supports you to exist in a place where there is a lot of difficult circumstances arise. It may be of the scarcity of food, space, etc.

According to the context of this question, for the actual and fundamental survival of life, you would not need an internet or cellular connection. But in spite of this one must require fresh air, potable water, and healthy food.

Therefore, the kinds of things that would you need to survive on a deserted island are well described above.

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If we mix sugar to a already prepared solution with ionic material the conductivity of ionic solution will not change.

Ionic compound conduct electricity in water or liquid because there ions are free to move.Ionic compound are made up of electrically charged ions or ions are free to move , thus they conduct electricity. when ionic solution dissolve in water , the ions get separated and disappears across the solution.this ions helps in conducting electricity in the solution.    

Covalent compounds are formed by the sharing of electrons . so. in covalent compounds ions are not present to conduct electricity.

Thus,If we mix sugar or one of the covalent solution to a already prepared solution with ionic material, the conductivity of ionic solution will not change.

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The electric force is 2.33 × 10⁴⁹ times greater than the gravitational force.

Gravitational Force is defined as the force of magnet between any two bodies is directly commensurable to the product of their million and is equally commensurable to the forecourt of the distance between them.

Gravitational force is directly proportional to the weight of the two bodies.

Now,

The gravitational force in the middle of the proton and the electron is obtained from;

Fg = G m mp / r²

Where ,

me = mass of the electron

mp = mass of the proton

r = distance of separation

Fg = (6.67 x 10⁻¹¹ Nm² / C²) x (9.11 × 10⁻³¹) × 1.673 ×10⁻²₇/(1.8 × 10⁻¹⁰)²

Fg = 3.86 × 10⁻⁵⁸ N

For the electric force;

Fe=K e²/r²

Where,

K = electric constant

e = magnitude of charge on electron and proton

r = distance of separation

Fe = 8.988 × 10⁹x (1.602×10⁻¹⁹)² /(1.8×10⁻¹⁰)²

Fe = 7.10 × 10⁹ N

Hence, the number of time the electric force is stronger than the gravitational force = 9× 10⁻⁹ N/3.04 × 10⁻⁵⁸ N = 2.33 × 10⁴⁹times

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A pure substance has a definite chemical formula. However, a mixture does not have a constant component ratio and hence cannot be described by a fixed formula.

A pure substance comprises only one type of matter. This can be a single element or a single compound, but each sample of this substance examined must have the same thing with a fixed, specific set of qualities.

In contrast, a mixture is referred to as a combination of two or more pure components. Because the atoms of the constituent substances are not chemically bound, mixtures may always be divided back into their constituent pure components.

Whereas a compound may have properties that are significantly different from the constituent's elements, however, mixtures retain their original properties.

Examples are chlorine, a strong green gas, and sodium, a soft, silvery metal. Together, these two elements can create sodium chloride (table salt), a white, crystalline substance that possesses neither the characteristics of sodium nor those of chlorine. However, if we combined ground pepper with table salt, we would still be able to distinguish the individual grains of each of them.

That's why pure substance has a definite chemical formula. However, a mixture does not have a constant component ratio and hence cannot be described by a fixed formula.

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Controllable and scalable synthesis of hollow - structured porous aromatic polymer for selective adsorption and separation of hmf from reaction mixture of fructose dehydration is H-PAP show exclusive adsorption , without adsorption of fructose and HMF with high purity  from reaction mixture of fructose dehydration is recovered.

Hollow structure porous aromatic compound H-PAP with cavity were controllably prepared through surface coating and etching method under scalable synthesis. It is found that the fill factor (f) of a reactor is an important parameter for finding scalability of synthesis. the well developed H-PAP as adsorbent was investigate in adsorption of HMF (5-hydroxymethylfurfural) under static mode from single component to multi component aqueous solution. in the case of HMF adsorption from real reaction mixture of acid catalyzed fructose dehydration with high purity (94.4%) recovered.

thus,in controllable and scalable synthesis,HMF with high purity  from reaction mixture of fructose dehydration is recovered.

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Following are the details of the above mentioned scientific scenario:

Hence, as a result of her experiment, Penny finds the null hypothesis to be true. This is because adding mass to the cart did not change the time it took for it to roll down.

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Answer:

Strong base

Explanation:

Answer: weak base

Explanation: