preparation of 2,2-dimethyl-3-octyne cannot be achieved via alkylation of acetylene. explain.

The given equation is not a balanced chemical equation as the mass of atoms on the both reactant and product side is not equal. Therefore, this equation does not demonstrate the law of conservation of matter.

A chemical equation can be defined as the representation of a reaction with help of symbols of the substances. A chemical equation includes of reactants participating and formed products separated by an arrow in the equation.

The chemical equation in which the mass of reactants is equal to the mass of the products is called a balanced chemical equation. For that, the law of conservation of mass should be followed by a balancing of a chemical equation which says that the mass can neither be created nor destroyed.

The given chemical equation of silver oxide is:

\(Ag_2O\longrightarrow Ag+O_2\)

The number of atoms of silver and oxygen is not equal on both sides.

The balanced chemical equation will be for the above reaction:

\(2Ag_2O\longrightarrow 4Ag +O_2\)

and this equation demonstrates the law of conservation of matter.

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The receptor type used to detect decreases in temperature from 35°C to 20°C is the cold receptors.

Cold receptors are specialized nerve endings located throughout the body that detect changes in temperature. These receptors send signals to the brain, which then determines whether the environment is too hot or too cold.

Cold receptors are sensitive to temperatures below the body's normal temperature and act as an alert system for the body in order for it to respond and adjust to colder temperatures. The receptors are activated when temperatures are lower than the body's normal temperature and send signals to the brain to activate the body's cooling mechanisms.

The receptors can also detect sudden drops in temperature, such as when a person is exposed to chilly air. In order to protect against the cold, the body will start to shiver, as well as produce sweat and heat up the muscles. Cold receptors are important for the body to detect temperature changes and protect it from the cold.

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Hydrazine is a chemical compound with the formula \(N_2H_4\). 120 molecules of\(NH_3\) will be formed if 60 molecules of \(N_2H_4\) decompose into \(N_2\) and \(NH_3\).

It is used as a rocket fuel and as a polymerization catalyst in the production of plastics and when hydrazine decomposes, it produces nitrogen gas (\(N_2\)) and ammonia (\(NH_3\)). If 60 molecules of hydrazine decompose into \(N_2\) and \(NH_3\), the number of molecules of \(NH_3\) that will be formed can be determined using the balanced equation for the reaction: \(N_2H_4 -- > N_2 + 2NH_3\). For every one molecule of hydrazine that decomposes, two molecules of ammonia are formed. Therefore, the number of ammonia molecules produced is twice the number of hydrazine molecules that decompose. Since 60 molecules of hydrazine are decomposing, the number of ammonia molecules formed is: 2 x 60 = 120 molecules of \(NH_3\)

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Answer:

They both orbit the sun

Explanation:

They are both celestial bodies orbiting our Sun.

The compound is classified as hygroscopic. This means that the compound absorbs moisture from the air to form a hydrate. Hygroscopic compounds are often used as desiccants to remove moisture from the air.

When a sample is left on the desk for several hours, it is exposed to air and any moisture that might be present in the air. If the compound is hygroscopic, it absorbs moisture from the air and forms a hydrate. This can be seen when the crystals appear moist, and liquid is forming around them. This is because the moisture is being absorbed into the crystals and forming a hydrate. Hygroscopic compounds are often used as desiccants to remove moisture from the air. They can be found in various forms, such as silica gel packets or drying agents used in packaging. They are also used in laboratories to remove moisture from samples to prevent any unwanted reactions or reactions that might affect the sample.

In conclusion, the compound left on the desk over several hours and appears moist with liquid forming around the crystals is classified as hygroscopic. Hygroscopic compounds absorb moisture from the air to form a hydrate and are often used as desiccants to remove moisture from the air.

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Answer:

\(\boxed{Carbon~ Sink}\)

Explanation:

Any reservoir, natural or otherwise, is called a carbon sink, that accumulates or stores some carbon.

Nowadays the 2 more important carbon sinks are vegetation and the oceans.

We can also say that atmosphere, soil, and forests are the world's largest carbon sinks.

Also, we can describe the carbon sink as anything that absorbs more carbon from the atmosphere than it releases. In contrast, a carbon source is anything that releases more carbon into the atmosphere than it absorbs, e.g. the burning of fossil fuels or volcanic eruptions.



The atmospheric pressure at the mountaintop is approximately 294 mmHg.

To find the atmospheric pressure at the mountaintop, you'll need to use the relationship between boiling point and atmospheric pressure. The key point to remember is that as altitude increases, atmospheric pressure decreases, which leads to a lower boiling point for water.

In this case, the boiling point of water at the mountaintop is 83°C. You can use the Clausius-Clapeyron equation to find the atmospheric pressure, but it requires some complex calculations. Instead, you can use a simplified approximation that works well for small temperature differences: for every 1°C decrease in boiling point, the pressure decreases by approximately 27.4 mmHg (or 27.4 Torr).

First, find the difference in boiling point compared to sea level:
100°C (normal boiling point) - 83°C (mountaintop boiling point) = 17°C

Next, multiply this difference by 27.4 mmHg/°C to find the change in pressure:
17°C * 27.4 mmHg/°C ≈ 466 mmHg

Now, subtract this change in pressure from the sea-level atmospheric pressure (760 mmHg):
760 mmHg - 466 mmHg ≈ 294 mmHg

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Answer: Revoke the driver's license for at least 12 months

Explanation:

Chemical tests are used in order to measure the amount of drugs or alcohol that is in the body of a person when the person was arrested. To do this, samples of the urine or blood of the person can be taken and the result will be used to know if the person was driving under the influence of alcohol or not.

If the person refuse a legal chemical test issued by a law enforcement officer, the Division of Motor Vehicles is required to revoke the the driver's license of the person for at least 12 months.

Answer:

The excited state electron configuration shows when an electron is excited and jumps into a higher orbital. For example, sodium in its excited state would have an electron configuration of 1s2 2s2 2p6 3p1, compared with its ground state of 1s2 2s2 2p6 3s1.

Explanation:

a) Low, b) High c) Low d) Either High or Low depending on the accuracy of printed volume e) Unaffected.

How does the molar mass of a volatile liquid change?

The molar mass of a volatile liquid, calculated using the procedure in this experiment, would be affected by the following procedural changes:

(a) If you did not completely vaporize the liquid when you heated it, the molar mass would be incorrectly low. This is because some of the liquid would remain, leading to a lower mass of vapor and, thus, an underestimation of the molar mass.

(b) If the foil cap got wet while you were cooling the flask and its contents with running water, the molar mass would be incorrectly high. The added water would increase the mass of the system, resulting in an overestimation of the molar mass.

(c) If you added the boiling stone to the flask after you had already determined the mass of the empty flask and foil cap, the molar mass would be incorrectly low. The boiling stone would contribute to the mass of the system, causing an underestimation of the molar mass.

(d) If you forgot to measure the volume of the flask and used the volume printed on the flask for your calculations, the molar mass could be either incorrectly high or low, depending on the accuracy of the printed volume. If the printed volume is inaccurate, it would result in an incorrect calculation of the molar mass.

(e) If your unknown liquid had a boiling point of 102.3 Celsius, the molar mass would be unaffected by this fact alone, as long as you correctly conducted the experiment and took this boiling point into account during calculations. The boiling point itself does not directly impact the calculation of the molar mass.

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This is not the best way to organize a periodic table because two elements might have similar atomic mass.

Periodic table is a chart in which arrangement of chemical elements are done.

In the early periodic table elements are arranged on the basis of their atomic masses, while after sometime Moseley arranged the periodic table on the basis of atomic number as he proposed that properties of an element is justified on the basis of number if electrons.

And mass of two substances may be same so it is difficult to differentiate between them.

Hence, two elements might have similar atomic mass.

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To find the molecular formula, we would need to multiply the empirical formula by the whole number required to reach the molar mass of 62.00 g, which is likely to be C2H4O2.

To obtain the empirical formula, the percentage composition of each element must be converted to moles and divided by the smallest number of moles obtained. From the empirical formula, the molecular formula can be determined by multiplying the empirical formula by the whole number required to reach the desired molar mass.

The molar mass is the mass of a substance in grams that contains Avogadro's number of entities of that substance. It is usually expressed in units of grams per mole (g/mol). The molar mass is used to convert the amount of a substance in moles to its mass in grams.

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Answer:

Explanation:

Ionization energy:

It is the minimum amount of energy required to remove the electron from isolated gaseous atom to make the ion.

As we move from left to right across the periodic table the number of valance electrons in an atom increase. The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell.

When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction. The electrons are pull towards the nucleus and valance shell get closer to the nucleus. As a result of this greater nuclear attraction atomic radius decreases and ionization energy increases because it is very difficult to remove the electron from atom and more energy is required.  Where as,

When we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.

As the size of atom increases the ionization energy from top to bottom also  decreases because it becomes easier to remove the electron because of less nuclear attraction and as more electrons are added the outer electrons becomes more shielded and away from nucleus.

Answer:

5

Explanation:

Density = mass divided by volume

15 divided by 3 is 5

Answer:

stick together like magnets

Explanation:

Answer:

If a positively charged body is brought near to a neutral or uncharged body, it induces a negative charge on the near side and a positive charge on the far side of the neutral object. This creates a force of attraction between the two bodies.

The volume of chlorine gas at STP required for the reaction is 0.363 L (i.e 363 mL)

Mole = mass / molar mass

Mole of Ag = 3.5 / 108

Mole of Ag = 0.0324 mole

Balanced equation

2Ag + Cl₂ —> 2AgCl

From the balanced equation above,

2 mole of Ag reacted with 1 mole of Cl₂.

Therefore,

0.0324 mole of Ag will react with = 0.0324 / 2 = 0.0162 mole of Cl₂

The volume of chlorine gas, Cl₂ required for the reaction can be obtained by using the ideal gas equation as follow:

PV = nRT

1 × V = 0.0162 × 0.0821 × 274

V = 0.363 L or  363 mL

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Answer:

Please upload the picture and I can answer

Explanation:

Answering: it is mostly empty space

Explanation:

The proportions of hexane and heptane that should be mixed to achieve the highest entropy of mixing are 54% hexane and 46% heptane.

The entropy of mixing is the measure of how much the entropy of a system changes when two components are mixed. The entropy of mixing increases when the two components have different sizes and shapes, and when they interact with each other in a way that creates more randomness or disorder in the system.

Mixing ratio of hexane and heptaneHexane and heptane are both hydrocarbons with different molecular weights and boiling points.

Hexane has a molecular weight of 86.18 g/mol and a boiling point of 68.7 °C, while heptane has a molecular weight of 100.21 g/mol and a boiling point of 98.4 °C.

To calculate the proportions of hexane and heptane that should be mixed to achieve the highest entropy of mixing, we need to use the mole fraction equation:

X1 = moles of hexane / total moles of mixtureX2

= moles of heptane / total moles of mixtureX1 + X2

= 1

The total number of moles in the mixture can be calculated by using the mass of each component and its molecular weight.

Assuming a total mass of 100 g and a mixture of hexane and heptane, the number of moles of each component is as follows:

n1 = m1 / M1

= 50 / 86.18

= 0.58 mol

n2 = m2 / M2

= 50 / 100.21

= 0.5 mol

The mole fractions of each component can be calculated as follows:

X1 = n1 / (n1 + n2)

= 0.58 / (0.58 + 0.5)

= 0.54

X2 = n2 / (n1 + n2)

= 0.5 / (0.58 + 0.5)

= 0.46

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Explanation:

\(2.25mol \times \frac{22.4lit}{1mol} = 50.4 lit o2 \)

Answer:

The line with spikes and semicircles is a stationary front, it brings days of steady rain.

Explanation:

L means Low pressure, it brings stormy weather with strong winds.

H means High pressure, it brings fair weather and light winds.

The line with spikes is a cold weather front, it brings thunderstorms and colder

temperatures.

The line with spikes and semicircles is a stationary front, it brings days of steady rain.

The molarity of the solution is 3.11 M, which means that there are 3.11 moles of KCI present in one liter of the solution.

The molarity of a solution is defined as the number of moles of solute present in one liter of the solution. To calculate the molarity of the given solution, we need to first determine the number of moles of KCI present in the solution. We can use the formula:
Number of moles of solute = Mass of solute / Molar mass of solute
The molar mass of KCI is 74.55 g/mol (39.10 g/mol for potassium and 35.45 g/mol for chloride). Therefore, the number of moles of KCI present in the solution is:
Number of moles of KCI = 128 g / 74.55 g/mol = 1.717 moles
Now we can use the formula for molarity:
Molarity = Number of moles of solute / Volume of solution in liters
We need to convert the volume of solution from milliliters to liters by dividing by 1000:
Volume of solution = 552 mL / 1000 mL/L = 0.552 L
Therefore, the molarity of the solution prepared using 128 grams of KCI with a volume of 552 mL is:
Molarity = 1.717 moles / 0.552 L = 3.11 M

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Answer:

hey kunal why arent you talking and also the answer is c \

Explanation:

A charged particle is a particle with an electric charge. It may be an ion, a molecule or atom. A neutral particle is striking a positive particle, breaking it into more neutral and positive particles describes the charges of the particles involved. The correct option is A.

The matter can be defined as any material with mass and occupies a space. The smallest unit of the matter is called the atom. In matter the charged particles or subatomic particles are negatively charged electrons, positively charged protons and neutral neutrons.

In the process nuclear fusion, the two lighter nuclei fuse together to form a heavier nucleus with the simultaneous release of huge amount of energy. One of the nuclei may be the proton.

When a charged particles interact with the matter, it will split the matter to generate some charged particles and another stable neutral particle.

Thus the correct option is C.

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To make an E9 mixture 8657.14 gal of E7 should be mixed with 3000 gal of E10

Given to us is the amount of ethanol in the E10 mixture is 10% of 3000 gallons:

Ethanol in E10 = 10% × 3000 gal = 0.10 × 3000 gal = 300 gal

To solve this problem, we can set up an equation based on the amount of ethanol in each mixture.

Let x represent the amount of E7 mixture (in gallons) that needs to be added to the E10 mixture to obtain the desired E9 mixture.

The amount of ethanol in the E7 mixture is 7% of x gallons:

Ethanol in E7 = 7% ×  gal = 0.07 × gal

The resulting E9 mixture will contain 9% ethanol of the total volume of 3000 + x gallons:

Ethanol in E9 = 9% × (3000 + x) gal = 0.09 × (3000 + x) gal

According to the problem, the resulting E9 mixture contains 906 gallons of ethanol:

Ethanol in E9 = 906 gal

Now we can set up the equation:

Ethanol in E10 + Ethanol in E7 = Ethanol in E9

300 gal + 0.07x gal = 906 gal

Subtracting 300 gal from both sides:

0.07x gal = 606 gal

Dividing both sides by 0.07:

x = 606 gal / 0.07

x = 8657.14

Therefore, approximately 8657.14 gallons of E7 mixture should be mixed with 3000 gallons of E10 to make an E9 mixture.

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Complete question: Ethanol fuel mixtures have "E" numbers that indicate the percentage of ethanol in the mixture by volume. For example, E10 is a mixture of 10% ethanol and 90% gasoline. How much E7 should be mixed with 3000 gal of E10 to make an E9 mixture?

Answer:

This is Newtons 2nd Law: Force is directly proportional to the acceleration of the object, acceleration is inversely proportional to the mass of the object.

The complete, balanced chemical reaction for the reaction between gold (Au) and selenic acid (H2SeO4) is: 4Au + 3H2SeO4 → 2Au2(SeO4)3 + H2SO3 + H2O. The coefficients for the reactants and products are as follows: 4 for Au, 3 for H2SeO4, 2 for Au2(SeO4)3, 1 for H2SO3, and 1 for H2O. The type of chemical reaction is a single displacement reaction.

The balanced chemical equation for the reaction between gold (Au) and selenic acid (H2SeO4) is:

4Au + 3H2SeO4 → 2Au2(SeO4)3 + H2SO3 + H2O

In this equation, the coefficient in front of Au is 4, indicating that 4 moles of gold are involved in the reaction. The coefficient in front of H2SeO4 is 3, indicating that 3 moles of selenic acid are present.

On the product side, the coefficient in front of Au2(SeO4)3 is 2, indicating the formation of 2 moles of gold selenate. The coefficient in front of H2SO3 is 1, representing the formation of 1 mole of sulfurous acid. The coefficient in front of H2O is also 1, indicating the production of 1 mole of water.

Based on the reactants and products involved, the type of chemical reaction is a single displacement reaction, as gold displaces hydrogen in selenic acid to form gold selenate.

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The classification of the given compounds is as follows:

(a) lactose (C₁₂​H₂₂​O₁₁​) - non-electrolytes

(b) lactic acid (HC₃​H₅​O₃​) - weak electrolytes

(c) dimethylamine [(CH₃​)₂​NH] - weak electrolyte

(d) barium hydroxide Ba(OH)₂ - strong electrolytes

Electrolytes are substances that when in the molten or solution state conduct electricity and are decomposed by the direct current passing through them.

Electrolytes dissociate into the component ions when they are dissolved in water or in molten form. Some examples of electrolytes are acids and bases.

Strong electrolytes dissociate completely into one while weak electrolytes dissociate partially.

Non-electrolytes do not dissociate into ions in solution but remain as molecules. Some example of non-electrolytes is organic solvents.

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A certain mass of a gas occupies 2 litres at 27°C and 100 Pa. ... is the force which when acts on a body of mass 1 kg, produces an acceleration of 1 m s-2.

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There are a lot of ionic compounds in fireworks, most of them are salts, like: Strontium Nitrate and Strontium Carbonate ( both in the color red); Calcium Carbonate and Calcium Chloride (orange); Sodium Nitrate, Sodium Oxalate (yellow); Barium Nitrate and Barium Carbonate (green) and so on. For the gunpowder itself we have the Potassium Nitrate as an ionic compound.

The chemical reaction for the combustion of black powder is:

6KNO3 + C7H4O + 2S -> K2CO3 + K2SO4 + K2S + 4CO2 + 2CO + 2 H2O + 3N2

It's not just a single reaction, but this is a general representation of it.

Answer:

Elements

Gold, copper

Compounds

Sodium chloride, Sulphur dioxide, Aluminium oxide,

Mixture

Brass, rainwater, distilled water, sugar solution,muddy water

Explanation: