Convert 11.03 moles of calcium nitrate to grams.

In the neutralization reaction: HNO3 + NaOH → NaNO3 + H2O, the conjugate base is NaNO3.

In a neutralization reaction, an acid reacts with a base to form a salt and water. The acid donates a proton (H+) to the base, resulting in the formation of the conjugate base of the acid and the conjugate acid of the base.

In this reaction, HNO3 (nitric acid) acts as the acid, donating a proton to NaOH (sodium hydroxide), which acts as the base. The conjugate base of HNO3 is NO3-, and it combines with the sodium cation (Na+) to form the salt NaNO3.

H2O (water) is not the conjugate base in this reaction. It is the product of the neutralization reaction and is formed by the combination of the conjugate acid of NaOH (Na+) and the conjugate base of HNO3 (OH-).

Therefore, in the given reaction, the conjugate base is NaNO3, formed by the reaction between HNO3 and NaOH.

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Answer:

A and B

Explanation:

The reactants in this chemical equation are C and O₂.

  Given the chemical reaction is:

                   C  +  O₂   →  CO₂

In a chemical reaction, reactants combines to give the product. The reactants are located to the left side of the expression.

The products are found on the right side .

              A   +     B     →     C  

             reactants         products

So, in the given reaction,

  C and O₂ are the reactants and CO₂ is the product.

Answer: B and C

Explanation:

ur welcome

The mass of an object is the product of its volume and density. The mass of a the object with a volume of 825 cm³ and a density of 13.6 g/cm³ is 11220 g.

Density of substance is the measure of its mass per unit volume. It describes how closely its particles are packed. Density depends on the bond type, temperature and pressure.

Volume of the object is the space occupied by its particles. Volume can be expressed in L, ml, cm³, dm³ etc. Only solids and liquids has a definite volume and the volume of gases is that of the container.

Give that, volume of the object = 825  cm³

density =  13.6 g/cm³

Mass = volume × density

m = 825  cm³ ×  13.6 g/cm³ = 11220 g

Therefore, the mass of the object is 11220 g.

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The specific heat of mercury calculated from her data is 0.13 J/g°C.

Specific heat is a measure of how much energy is required to heat a substance. This is the amount of energy (in joules) required to heat 1 gram of a substance by 1°C. Different substances have different specific heats.

To answer this question, use the heat slaughter formula:

Q =mCΔT

In the question:

Heat energy: Q = 30.1 J

Mass of mercury: m = 12.5 g

T1 = 21.2

T2 = 39.6°C

Temperature:

ΔT = T2 –T1

∆T = 39.6 – 21.2

∆T = 18.4°C

The specific heat of mercury is?

Q =mCΔT

C = Q/mΔT

C = 30.1/12.5 x 18.4

C =30.1/230

C = 0.13 J/g°C

So, the specific heat of mercury is 0.13 J/g°C.

Question:

In the laboratory a student finds that it takes 30.1 Joules to increase the temperature of 12.5 grams of liquid mercury from 21.2 to 39.6 degrees Celsius.

The specific heat of mercury calculated from her data is_____J/g°C.

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Answer:

This is because earth is at a tilt, and the tilt is the cause of all seasons. In winter, we are the furthest from the sun due to the tilt.

Explanation:

Ammonia (NH\(_{3}\)) is the gas that will diffuse faster as it has lower molecular weight than CO\(_{2}\).

The rate of diffusion or effusion is explained by Graham's law. According to this law, lighter atoms and molecules will diffuse through the air more quickly than heavier atoms and molecules while a gas's temperature and pressure are kept constant.

The rate of effusion of a gas is the process by which material particles from the confined region gradually start to escape. Think about how a balloon would deflate from the inside out if we made a hole in it, allowing the gas inside to start escaping into the atmosphere. This is referred to as the effusion of gas into the atmosphere.

As ammonia has lower molecular weight than CO\(_{2}\), it will diffuse faster.

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Answer:

Answer temperatures gram is correct because there is more of a mass of numbers and the numbers are higher. (don't really know this subject, just guessing, hope this helped.)

The substance A has higher solubility then substance B because the higher the temperature the easier the substance will dissolve.

The word solubility is defined as the ability of a substance, the solute, to form a solution with another substance, the solvent.

It can also be defined as a property that allow sugar molecule to dissolve.

It can be defined as at a given temperature, the amount of solute that can dissolve in a given amount of solvent.

In this reaction, increasing the pressure and temperature results in increased solubility. An increase in pressure causes more gas particles to enter the liquid, lowering the partial pressure.  

For exothermic reaction the temperature increases with decrease in solubility and for endothermic reaction the temperature decreases with increase in solubility.

Thus, the substance A has higher solubility then substance B because the higher the temperature the easier the substance will dissolve.

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The balanced chemical equation for the thermite reaction is: Fe2O3 (s) + 2Al(s) → Al2O3 (s) + 2Fe(l)

In this reaction, solid iron (Fe) and solid aluminum oxide (Al2O3) are formed as products. The states of matter are indicated in parentheses: (s) for solid and (l) for liquid. Fe2O3(s) + 2Al(s) → Al2O3(s) + 2Fe(l)

The thermite reaction is an exothermic reaction between a metal oxide and a reducing agent, typically aluminum. The balanced chemical equation for the thermite reaction between iron(III) oxide and aluminum.

In this equation, two molecules of aluminum react with one molecule of iron(III) oxide to form two molecules of iron and one molecule of aluminum oxide, along with the release of a significant amount of heat. This reaction is commonly used in welding and pyrotechnics due to its intense heat production. It is important to note that the equation must be balanced to accurately represent the reaction, with equal numbers of each element on both sides of the equation.

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Answer:

the speed of sound in air at 0° C that is composed of 60% nitrogen, 20% oxygen, and 20% carbon is 331.5 m/s.

Explanation:

The speed of sound in a gas is determined by the temperature and the molecular weight of the gas. To calculate the speed of sound in air, we need to first determine the average molecular weight of the air. The average molecular weight of a gas mixture is given by:

M = (f1 * M1 + f2 * M2 + ... + fn * Mn) / (f1 + f2 + ... + fn)

Where M is the average molecular weight, fi is the mole fraction of each component in the gas mixture (the fraction of total moles of that component), and Mi is the molecular weight of each component.

In this case, we have:

M = (0.6 * 28 g/mol + 0.2 * 32 g/mol + 0.2 * 12 g/mol) / (0.6 + 0.2 + 0.2)

= 29.6 g/mol

The speed of sound in air at 0° C is given by:

c = 331.5 * sqrt(1 + (T / 273.15))

Where c is the speed of sound in m/s, T is the temperature in °C, and 273.15 is the temperature at which the speed of sound is 331.5 m/s.

Substituting the values and solving for c, we get:

c = 331.5 * sqrt(1 + (0 / 273.15))

= 331.5 m/s

Therefore, the speed of sound in air at 0° C that is composed of 60% nitrogen, 20% oxygen, and 20% carbon is 331.5 m/s.

Answer:

Transition elements

They include elements from group 3 to group 12 (depending on the periodic table format) and are typically characterized by the filling of their d orbitals with electrons.

The transition elements have unique properties such as variable oxidation states, the ability to form complex compounds, and often exhibit paramagnetic behavior. Some examples of transition elements include iron (Fe), copper (Cu), chromium (Cr), and zinc (Zn).

The type of element characterized by the presence of electrons in the d orbital is called a transition metal.

Transition metals are located in the d-block of the periodic table and include elements from group 3 to group 12. They have partially filled d orbitals in their electron configuration, allowing them to exhibit unique chemical and physical properties.

In the periodic table, elements are organized into blocks based on their electron configurations. The d-block, also known as the transition metals, consists of elements that have their outermost electrons filling the d orbital. These elements span from group 3 to group 12 and include familiar metals such as iron, copper, and silver.

The d orbital can accommodate a maximum of ten electrons, which are distributed across its five suborbitals. Transition metals often have multiple oxidation states and exhibit characteristics like high melting and boiling points, good conductivity, and the ability to form colorful compounds. The presence of partially filled d orbitals in their electron configuration gives transition metals their unique properties and allows them to participate in various chemical reactions.

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Actually Welcome to the Concept of the Ionic bonds.

Since Sodium (Na) is a cation and Chlorine (Cl) is a Anion, they both form a Ionic bond called as NaCl (common salt)

So answer is, Na and Cl

The mass of water that contains same number of hydrogen atoms as 34 g of ammonia is 54 g.

First calculate the number of moles in a hydrogen gas. The molar mass of ammonia(NH₃) is 17 g/mol. Hence, the number of moles for ammonia(NH₃) is

moles=34 g×(1 mol/17 g)

=2 mol

The relation between moles and number of atoms is given as

1 mol=6.022×10²³ atoms

Since 1 mol NH₃ contains 3 mol of hydrogen. Hence, the number of hydrogen atoms in 2 mol NH₃ is

2 mol NH₃×(3 mol H/1 mol N)×(6.022×10²³ atoms/1 mol H)

=(2×3×6.022×10²³ atoms)

=3.6132×10²⁴ atoms

The molecular formula of water is H₂O. First, we need to find out the number of moles in the calculated atoms of hydrogen. One mol of water contains 2 moles of H. Hence, the number of moles of water is

3.6132×10²⁴ atoms×(1 mol H/6.022×10²³ atoms)×(1 mol H₂O/2 mol H)

=(3.6132×10²⁴ mol of H₂O/6.022×10²³×2)

=(3.6132×10²⁴ mol of H₂O/1.2044×10²⁴)

=3 mol of H₂O

The molar mass of of H₂O(water) is 18 g/mol. Hence, the mass of water is

3 mol H₂O×(18 g H₂O/1 mol H₂O)

=54 g H₂O.

Therefore, the mass of water which contains the same number of hydrogen atoms as 34 g of ammonia is 54 g of H₂O.

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Transesterification is a process by which an ester compound is reacted with an alcohol to form a different ester.

It's the process of converting one ester into another by exchanging the alkoxy group. Transesterification is important in the production of high molecular weight polyethylene terephthalate (PET) because it allows for the production of high-quality polyester resins. Polyethylene terephthalate (PET) is made from ethylene glycol and terephthalic acid or dimethyl terephthalate by transesterification.

PET is a thermoplastic polymer that is used in a variety of applications, including textiles, packaging, and beverage bottles. PET's popularity is due to its high strength, lightweight, and low cost. PET is formed by a process known as polymerization, in which ethylene glycol and terephthalic acid are combined in the presence of a catalyst to form a polymer chain. Transesterification is the key step in the synthesis of PET, which enables the creation of high molecular weight PET that has the desirable physical and mechanical properties required for various applications.

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Answer:

1.44 L

Explanation:

Since 25 is constant it is no use. Now, rearrange the gas formula. You should get...

P1V1/T2=P2V2T1

Next, rearrange to fit the problem. You should get...

V2=P1V1/P2

Fill in our values and solve. You should get 1.44 L

We can check this by knowing that P and V at constant T have an inverse relationship. Hence, this is correct.

- Hope that helps! Please let me know if you need further explanation.

The purpose of applying thin coatings of carbon and TiO2 in the experiment is to enhance the properties of the material's surface. Carbon coating improves the material's electrical conductivity, while TiO2 (titanium dioxide) coating increases its photocatalytic activity.

The purpose of applying thin coatings of carbon and TiO2 in this experiment is to enhance the properties of the materials being coated. Carbon is a widely used material in coating applications due to its excellent electrical conductivity and mechanical properties. In this experiment, it is used to improve the electrical conductivity of the material being coated. TiO2, on the other hand, is used to improve the material's optical properties. It is known to be an efficient photocatalyst, which means that it can help in the degradation of organic pollutants in the air and water. Additionally, TiO2 coatings have been shown to have self-cleaning properties, which can be useful in applications where cleanliness is critical. The thin coatings of carbon and TiO2 are applied to achieve the desired properties while minimizing the weight and thickness of the coatings.

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Answer:

Fluid friction describes the friction between layers of a viscous fluid that are moving relative to each other

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The overall process is not spontaneous at standard-state conditions and 298 K.

Hence, The overall process is not spontaneous at standard-state conditions and 298 K.

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The correct answer is c. 1.81 x 10^4 J. Here positive sign denotes that work is done on system.

The solutions to different questions are as follows:

1. To find the change in energy of the system, you can use the formula:

ΔE = q + w, where ΔE is the change in energy, q is the heat released, and w is the work done on the system.

In this case, q = -216 J and w = 280 J.

Therefore, ΔE = (-216 J) + (280 J) = 64 J. So, the change in energy of the system is 64 J.
2. The false statement is iii. Heat, q, is a state function. Heat (q) is not a state function, as it depends on the path taken during a process not on the initial and final state. Enthalpy (H), on the other hand, is a state function.
3. The false statement associated with the process H2O(l) --> H2O(s) ΔH = -6 kJ/mol is i. The surrounding gets warm as a result of this process. When water becomes ice, heat is released from the system, but it will not cause the surroundings to get warm, as the released heat is being used to change the state of the substance.
4. To calculate the work done on the system, you can use the formula: w = -PΔV, where P is the constant pressure and ΔV is the change in volume.

In this case, P = 10 atm and ΔV = 20 L - 2.0 L = 18 L.

So, w = -10 atm * 18 L = -180 atm L. Since 1 atm L = 101.3 J, w = -180 atm L * 101.3 J/atm L = -1.81 x 10^4 J. The correct answer is c. 1.81 x 10^4 J. Here positive sign denotes that work is done on system.

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Answer:

One of the best ways to protect your drinking water is to prevent pollution from getting into your drinking water source. Your drinking water can become polluted with animal waste, fertilizer, pesticides, herbicides, motor oil, gasoline, and other substances as they get carried to the source by runoff pollution .

Answer:

The process of unstable (or radioactive) atoms becomes stable by emitting radiation. This event over time is called radioactive decay. Alpha decay results in the loss of two protons and two neutrons from the nucleus

Answer:

radioactive disintegration

Explanation:

The energy of a photon that has a frequency of 2.3 x 10¹⁴ Hz is 1.524 × 10-¹⁹J

HOW TO CALCULATE ENERGY OF A PHOTON:

E = hf

Where;

E = energy of photon (J)

h = Planck's constant (6.626 × 10-³⁴J)

f = frequency of photon (Hz)

E = 6.626 × 10-³⁴ × 2.3 × 10¹⁴

E = 15.24 × 10-³⁴+¹⁴

E = 15.24 × 10-²⁰J

E = 1.524 × 10-¹⁹J

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When mechanical energy is lost due to friction, it becomes thermal energy.

Mechanical energy is the sum of kinetic energy and potential energy in an object that is used to accomplish a job or to move an object. Mechanical energy can be transformed between kinetic and potential energy, and it can be transformed between various forms of energy such as heat, light, and sound.

Friction is a force that opposes movement between two surfaces that are in touch with one another. When two surfaces are rubbed together, the force of friction opposes the motion of the objects.When mechanical energy is lost due to friction, it becomes thermal energy. As a result of friction, the mechanical energy of an object transforms into heat, which is referred to as thermal energy.

The heat produced by friction is due to the motion of molecules in the surface. The conversion of mechanical energy into thermal energy is a natural process that occurs all the time as a result of friction. Therefore, it is important to reduce friction in order to conserve mechanical energy, and hence reduce wastage.

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The Percent error for ice and salt water is 94.55%. The Percent error for ice water is 100.40%.

Absolute zero is the temperature whereby a system in its balanced state contains the lowest energy that corresponds to -273.15 °C.

Using the formula for Percent error, we have:

\(\mathbf{percent \ error = \dfrac{|experimental \ value| - |actual \ value| }{|actual \ value|} \times 100\%}\)

For ice and salt water:

\(\mathbf{percent \ error = \dfrac{|-14.9 -(-273.15)| }{|-273.15|} \times 100\%}\)

Percent error = 94.55%

For Ice water:

\(\mathbf{percent \ error = \dfrac{|1.1 -(-273.15)| }{|-273.15|} \times 100\%}\)

Percent error = 100.40%

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Answer: Well most if not all metals rust due to oxidation. Most can be melted at certain temperatures or just heated to a certain degree to be maluable

Explanation:

Answer: Acid rain is caused by a chemical reaction that begins when compounds such as sulphur dioxide and oxides of nitrogen are released into the air. These substances can rise very high up into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants called acid rain.

Explanation:

Answer:

it's volume also decrease

Answer:

c

Explanation:

the temperature of the person's hand is hight than the temperature of the smoothie

Answer:

c

Explanation:

the temperature of the person's hand is hight than the temperature of the smoothie

Answer:

yes you are doing it right my chemistry teacher said said so