What are 5 types of aqueous solutions with tin?

In order to test for ammonia, a moist red litmus paper should be held over the test tube containing the ammonia.  Option 3.

Ammonia is a substance that is alkaline in nature. All alkaline substances are able to turn red litmus paper to blue. This is in opposition to acidic substances that turn blue litmus paper to red.

Thus, the first test that can be used to determine if a substance is ammonia would be to hold a moist red litmus paper over the test tube containing the suspected substance.

Since ammonia is gas at room temperature, the substance suspected to be ammonia will diffuse from the test tube to turn the moist red litmus paper to blue.

Other methods to test for ammonia include passing a test tube containing hydrochloric acid over the test tube containing the substance. A white fume of ammonium chloride will confirm the presence of ammonia.

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Answer:

The answer is A. Carbonyl.

Carbonyl functional group is found in an aldehyde. Therefore, option (A) is correct.

A functional group with the formula C=O that is composed of a carbon atom double-bonded to an oxygen atom and is divalent at the C atom is known as a carbonyl group in organic chemistry.

The function of the carbonyl group is to break up the bonds in the carbon chain. The electronegative oxygen molecule will in general draw in additional electrons than the carbon it is attached to inside the carbonyl gathering.

There are many aromatic carbonyl compounds. Substances which incorporate carbonyls incorporate the compound answerable for the smell of vanilla and cinnamon.

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This is true because as thermal energy increases, molecules move faster and liquids are turned into gas.

States of matter is determined by the amount of energy possessed by the particles. Particles of a solid has the least amount of energy, liquid particles have more energy than solid particles while gas particles possess the highest amount of energy.

To increase the pressure of a substance, greater thermal energy is added to the substance by heating it up. This heat causes the molecules of the liquid to become more energetic and move faster .

As this occurs, intermolecular forces between the substance is broken as the liquid is converted to gas. The pressure. The energetic gas particles collide faster with the walls of the container thereby increasing the pressure.

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The decomposition of aspirin (acetylsalicylic acid,\(C_{9} H_{8} O_{4}\)) can occur through the hydrolysis reaction, resulting in the formation of acetic acid (\(CH_{3} COOH\)) and salicylic acid (\(C_{7} H_{6}O_{3}\)).

The decomposition of aspirin (acetylsalicylic acid, \(C_{9} H_{8} O_{4}\)) can occur through the hydrolysis reaction, resulting in the formation of acetic acid (\(CH_{3} COOH\)) and salicylic acid (\(C_{7} H_{6}O_{3}\)). To determine the moles of each product formed, we need to consider the balanced chemical equation for the reaction:

\(C_{9} H_{8} O_{4} = > C_{7} H_{6}O_{3} +CH_{3} COOH\)

From the equation, we can see that for every 1 mole of aspirin, 1 mole of salicylic acid and 1 mole of acetic acid are produced.

Therefore, the moles of salicylic acid and acetic acid formed will be equal to the number of moles of aspirin that decomposes. If we know the amount of aspirin in moles, we can directly calculate the moles of each product based on stoichiometry.

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Explanation

The number in front of a chemical formula in a reaction is called the coefficient. It is there to balance the equation.

For example:

2 H2 + O2 => 2 H2O

These numbers in front of H2 and H2O are called coefficients. In front of O2, there is a 1. Sometimes, it is omitted.

Answer: c. coefficients

Answer:

Explanation:

A molecule is a basic unit of a chemical substance made up of two or more atoms that are bonded together. A compound, on the other hand, is a substance made up of two or more different elements that are chemically bonded together.

Every compound is a molecule because it is made up of at least two chemically bonded atoms, but not every molecule is a compound because a molecule can be made up of the same type of atoms and not be a compound.

For example, molecular oxygen (O2) is made up of two oxygen atoms, but it is not a compound because both atoms are the same element. On the other hand, water (H2O) is a compound made up of hydrogen and oxygen atoms.

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Answer:

2460 meters

Explanation:

Since you are able to ride 82 meters in a min you would have to multiply 30 min by 82 m/min to get number of meters you can ride in 30 min.

Answer:

D

Explanation:

The unit used to measure atomic mass is the atomic mass unit (amu). A single amu is equivalent to 1/12 the mass of an atom from the carbon-12 isotopIsotopes with different numbers of protons and neutrons will have an actual mass slightly different from the atomic mass calculated in atomic mass units.

Answer:

C. 65 percent

Answer:

7.5 kcal

Explanation:

1.0 cal /g-C   * 100 g * (100- 25 C) = 7500 cal = 7.5 kcal

The amount of heat energy necessary to raise the temperature of 100 g of water at room temperature (25°C) to the boiling point (100°C) is 7.5 kcal.

Given to us the mass of water, the specific heat of water, and the change in temperature, we need to calculate the amount of heat energy.

m = 100 g

c = 1.0 cal/g°C

ΔT = (100 °C - 25 °C) = 75 °C

To calculate the amount of heat energy required, we can use the formula:

Q = m × c× ΔT

Where:

Q = heat energy (in calories)

m = mass of water (in grams)

c = specific heat of water (in cal/g°C)

ΔT = change in temperature (in °C)

Substituting the values into the formula:

Q = 100 g × 1.0 cal/g°C × 75 °C

Q = 7500 cal

7500 cal = 7.5 kcal

Therefore, the amount of heat energy required to raise the temperature of 100 g of water from 25 °C to 100 °C is 7500 calories, which is equivalent to 7.5 kcal.

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The volume of the gas at 101.3 kPa and 24°C will be 24.58 L.

Gas law is a set of empirical laws that describe the physical behavior of a gas. They are derived from experiments on gases, and they relate the pressure, volume, and temperature of a gas. The most famous gas law is the Ideal Gas Law, which states that the pressure, volume, and temperature of an ideal gas are related by the equation PV=nRT, where P is the pressure, V is the volume, n is the amount of gas, R is the gas constant, and T is the temperature.

At constant pressure, the volume of a gas will increase as its temperature increases. This is because the molecules are moving faster, so they take up more space. Therefore, the volume of the gas at 101.3 kPa and 24°C will be greater than 0.8 L. To calculate the exact volume, you would need to use the ideal gas law:
PV = nRT
where P is pressure,
V is volume,
n is the number of moles of gas,
R is the ideal gas constant, and
T is temperature in Kelvin.
Solving for V, we get:
V = (nRT) / P
Plugging in the given values, we get:
V = (n * 8.314 * 297.15) / 101.3
V = 24.58 L
Therefore, the volume of the gas at 101.3 kPa and 24°C will be 24.58 L.

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Answer:

Vapor pressure is between vapor pressures of the pure liquids.

Explanation:

Vapor pressure is between vapor pressures of the pure liquids.

The compound C4H6O4 can be classified as a dicarboxylic acid. In this case, the presence of four carbon atoms (C4) indicates that it is a relatively larger molecule.

The molecular formula also contains six hydrogen atoms (H6) and four oxygen atoms (O4). The presence of oxygen and carbon atoms suggests the possibility of carboxyl groups (-COOH) in the compound. Carboxyl groups are functional groups consisting of a carbonyl group (C=O) and a hydroxyl group (-OH) attached to the same carbon atom.

Since the compound contains four oxygen atoms, it is possible that it contains two carboxyl groups. A compound with two carboxyl groups is classified as a dicarboxylic acid. Dicarboxylic acids are organic compounds that have two carboxyl functional groups.

They are characterized by their ability to donate two protons (H+) and act as acids. Therefore, based on the molecular formula C4H6O4, the compound is classified as a dicarboxylic acid.

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Answer:

  -172.6 °C

Explanation:

You want to know the Celsius equivalent of the temperature 100.6 K.

The relation is ...

  C = K - 273.15

  C = 100.6 -273.15 = -172.55

The temperature is -172.55 °C, about -172.6 °C.

__

Additional comment

We have rounded to tenths, because that is precision of the temperature given. If you use 273 as the conversion constant, you will get -172.4.

Answer: \(LiF\) , \(AlCl_3\) and \(BeCl_2\)

Explanation:

An ionic bond is formed when an element completely transfers its valence electron to another element. The element which donates the electron is known as electropositive element or the metal and the element which accepts the electrons is known as electronegative element or non metal.

A covalent bond is formed when an element shares its valence electron with another element. This bond is formed between two non metals.

\(LiF\) , \(AlCl_3\) and \(BeCl_2\) contain ionic bonds as they aremade up of metals and non metals.

Answer:

D is the answers for the question

Explanation:

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Explanation:

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The bond energy of the Br-Cl bond would be 217.2 KJ/mol.

\(Cl_{2}\) + \(Br_{2}\)   ----> 2 Br - Cl

Δ H° reaction = (bond of energy of \(Cl_{2}\) + bond energy of \(Br_{2}\) ) - 2 (bond energy of Br - Cl)

1.6 = 243 + 193 - 2 (B.E of Br - Cl)

Bond energy of Br - Cl = 243 + 193 - 1.6 / 2 = 217.2 KJ/mol

Electrostatic forces between negatively charged electrons and positively charged atomic nuclei produce bonds. The amount of energy required to separate the atoms forming a molecular bond into free atoms is known as bond energy, and it serves as a gauge of the strength of a chemical connection.

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Answer:

\(c=0.127\ J/g^{\circ} C\)

Explanation:

Given that,

Mass of the sample, m = 275 g

It required 10.75 kJ of heat to change its temperature from 21.2 °C to its melting temperature, 327.5 °C.

We need to find the specific heat of the metal. The heat required by a metal sample is given by :

\(Q=mc\Delta T\)

c is specific heat of the metal

\(c=\dfrac{Q}{m\Delta T}\\\\c=\dfrac{10.75\times 10^3\ J}{275\times (327.5 -21.2)}\\\\=0.127\ J/g^{\circ} C\)

So, the specific heat of metal is \(0.127\ J/g^{\circ} C\).

Explanation:

small amount of solute is dissolved in a large amount of solvent. it would not make sense to have more solute and solvent. you can think of it like this, you can dissolve a teaspoon of salt in a litre water but you can't resolve 1 kg of salt in a teaspoon of water.

also, the solute is what is begin dissolved and the solvent is what dissolving the solute so the one day the solvent is dissolved in the solute does not make complete sense.

Answer: a

. dissolving it in water

Explanation:

When the unknown material is dissolved in water, it could react with the water particles and end up producing another material. For instance an alkali metal in water could form metal oxides.

Heating the material until it melts will not change it into another material because it will still be the same material only now it will be in liquid form. The same logic applies if it is burnt in a flame.

Synthesis. The synthesis of aspirin is classified as an esterification reaction. Salicylic acid is treated with acetic anhydride, an acid derivative, causing a chemical reaction that turns salicylic acid's hydroxyl group into an ester group (R-OH → R-OCOCH3).

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Answer:

B

Explanation:

Iodine has a negative charge, so it will gain electrons.

Answer:

The answer is 4

Explanation:

You divide the grams by the volume which will give you the density

so 19.2 divided by 4.8 equals 4

Density of a substance is defined as the mass of the subtance per unit volume of substance. Mathematically, we can express the density of a substance as shown below:

\(Density = \frac{Mass}{Volume}\)

With the above information in mind, we can obtain the answer to the question given above as follow:

Density = 4.8 g/mL

Mass = 19.2 g

\(Density = \frac{Mass}{Volume}\\\\4.8 = \frac{19.2}{Volume}\)

Cross multiply

\(4.8 * Volume = 19.2\)

Divide both side by 4.8

\(Volume = \frac{19.2}{4.8}\)

Therefore, the volume of the substance is 4 mL

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The value of the equilibrium constant Kc or Kp for ((ab)²)/((a₂)(b²))

The equilibrium constant expression for the given chemical reaction is:

Kc = [(ab)²] / [(a₂)(b²)]

where Kc is the equilibrium constant.

Let's assume that the gases have partial pressures of p(ab), p(a2), and p(b). Then, the equilibrium constant expression can be written as:

Kp = [(p(ab))²] / [(p(a₂))(p(b²))]

Now, we can use the ideal gas law to relate the partial pressures to the number of moles of each gas:

p(ab) = (n(ab) * RT) / V

p(a2) = (n(a2) * RT) / V

p(b) = (n(b) * RT) / V

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

Substituting these expressions into the equilibrium constant expression, we get:

Kp = [(n(ab) * RT / V)²] / [(n(a₂) * RT / V) * (n(b) * RT / V)²]

Simplifying, we get:

Kp = (n(ab)² / n(a₂) * n(b)²) * (RT / V)²

We can rewrite the expression in terms of the number of moles of the reactants and products, as:

Kp = ([ab]² / [a₂] * [b]²) * (RT / P)²

where [ab], [a₂], and [b] are the molar concentrations of the reactants and products, and P is the total pressure of the gases.

Therefore, the value of the equilibrium constant Kc or Kp for ((ab)²)/((a₂)(b²)) can be calculated using the above expression. However, the specific numerical value of Kc or Kp will depend on the temperature and pressure conditions of the reaction.

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Answer:

rate of reaction

Explanation:

The reduction of the nitric oxide with the hydrogen is second order in the NO and first order in H₂. The rate law for this reaction is : Rate = k[ NO ]² [ H₂ ]¹ = k[NO]² [H₂] .

The rate of the reaction, is also known as the reaction rate, it is the rate at which the reactants transform into the products. The rate of the reaction for the  different chemical reactions occur at the different rates. The rate at which the chemical reaction proceeds is called as the reaction rate.

The reaction is :

2NO + 2H₂ --->  N₂ + 2 H₂O

The order in NO  + the order in H₂ = overall order = third

2 + the order in H₂ = 3

The order in H₂ = 3 - 2

                          = 1

                          = first order in H₂

Thus the complete rate of reaction is Rate = k[NO]² [H₂] .

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Answer:

The nervous system has two main parts: The central nervous system is made up of the brain and spinal cord.

Explanation:

The reagents needed to carry out the halogenation of a ring are a halogen (e.g. bromine or chlorine) and ultraviolet (UV) light. The halogen is added to the ring in a reaction flask, and then the flask is exposed to UV light to activate the reaction.

The reagents required to carry out the given synthesis, which involves the halogenation of a ring with a halogen and UV light, are described below. The following are the reagents needed for the synthesis is Halogen and UV Light

The halogenation of a ring can be done with the halogen and UV light. The halogen and UV light are the two reagents needed to carry out this reaction. Halogens like fluorine, chlorine, bromine, and iodine can be used in halogenation. Halogenation of organic compounds is a common technique used in organic synthesis. Halogens' electronegativity makes them highly reactive, and their addition to a molecule usually results in the formation of new carbon-halogen bonds.

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