Elemental silicon is oxidized by o2 to give a compound which dissolves in molten na2co3. When this solution is treated with aqueous hydrochloric acid, a precipitate forms. What is the precipitate

From the addition of 1 equivalent of HBr to 1,3-butadiene, 3-bromo-1-butene is obtained as a product.

What is moles?

Moles are defined as the smallest base unit that is equivalent to \(6.02214 X 10^{23}\) units.

Moles are chemical entities, which are used to measure the mass or molecular mass of the compound, molecule, or atom. The moles are, for example can be explained as equal to the mass of the atom. For example, there is one mole in 12 grams of carboncarbon.

Thus the kinetic product formed is 3-bromo-1-butene.

Learn more about mole or mole fraction:

https://brainly.com/question/16031532

#SPJ4

Answer:

renewable recource.

Explanation:

Answer:

97.5%

Explanation:

the US mint specifies pennies as 2.5% copper in 97.5% zinc

Answer:

3MgI2 + Fe2S3 -> 3MgS + 2FeI3

Reaction Type

1.Double Displacement 

2.Oxidation-Reduction

The final pressure assuming the final temperature is 273°C is 5.00 atm.

To find out the final pressure when a sealed piston holding 22.4L of gas is allowed to expand to 44.8L with a final temperature of 273°C, we will have to apply the combined gas law.

The combined gas law is a gas law that combines Charles's law, Boyle's law, and Gay-Lussac's law. It states that:

\($$\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}$$\)

Where, P₁ is the initial pressure of the gas

V₁ is the initial volume of the gas

T₁ is the initial temperature of the gas

P₂ is the final pressure of the gas

V₂ is the final volume of the gas

T₂ is the final temperature of the gas

We know that:

P₁ = 2.50 atm V₁ = 22.4 L T₁

= 0°C + 273°C = 273 K P₂ = ?

V₂ = 44.8 L T₂

= 273°C + 273°C = 546 K

Substitute the values into the combined gas law equation.

\($$\frac{(2.50\text{ atm})(22.4\text{ L})}{273\text{ K}} = \frac{P_2(44.8\text{ L})}{546\text{ K}}$$Multiply both sides by 546 K to solve for P₂. $$P_2 = \frac{(2.50\text{ atm})(22.4\text{ L})(546\text{ K})}{(273\text{ K})(44.8\text{ L})}$$Simplify. $$P_2 = 5.00\text{ atm}$$.\)

for such more questions on  pressure

https://brainly.com/question/24719118

#SPJ8

The number of moles in 5.12 × 10³ Fluorine(F) atoms is 8.45 × 10 ‐ ²³ moles.

The moles is defined as the measurement of the amount of any substance. Its is the measure of the amount of elementary particles in a substance. One mole is numerically equal to 6.023 × 10²³  which is called Avogadro's number.

From Periodic Table, we can find that Molecular Weight of Fluorine(F) is 19. We know the Molar Weight of any element is numerically equal to its Molecular Weight i.e. numerically, Molecular Weight = Molar Weight of any matter.

The number of moles in 5.12 × 10³ Fluorine(F) atoms will be calculated as: (5.12 × 10³) / (6.023 × 10²³) = 8.45 × 10 ‐ ²³ moles

So, there are approximately 8.45 x 10^-23 moles  in 5.12 × 10³ atoms of Fluorine.

Learn more about Molar Weight :

https://brainly.com/question/14865338

When snow on a mountain breaks loose, resulting in an avalanche, several forms of energy are involved in the process. Initially, potential energy is stored in the snowpack due to its elevated position on the mountain slope. This potential energy arises from the gravitational force acting on the snow particles.

As the snow begins to slide downhill, this potential energy is converted into kinetic energy. The force of gravity accelerates the snow particles, increasing their velocity as they descend. This kinetic energy is proportional to the mass of the snow and its velocity.

Additionally, during an avalanche, there can be significant amounts of mechanical energy involved. As the snow slides down the mountain, it interacts with the terrain, breaking apart, colliding with obstacles, and causing frictional forces. These mechanical interactions result in the conversion of kinetic energy into heat and sound energy.

In summary, the energy transformation during an avalanche involves the conversion of potential energy into kinetic energy, as well as the conversion of kinetic energy into heat and sound energy through mechanical interactions. This interplay of various forms of energy contributes to the destructive force and intensity of an avalanche.

To know more about intensity of an avalanche click this link-

https://brainly.com/question/28192597

#SPJ11

Answer:

numeric

Explanation:

not sure but hope it helps

Answer:

Warm equatorial air rises higher into the atmosphere and migrates toward the poles. This is a low-pressure system. At the same time, cooler, denser air moves over Earth's surface toward the Equator to replace the heated air. ... This happens because Earth's rotation generates what is known as the Coriolis effect

An ionic compound's name and formula always place the cation before the anion.

To learn more about ionic compound's refer to:

https://brainly.com/question/2687188

#SPJ4

The decreasing order of boiling points for the following liquids is H2O > NH3 > SO2 > CO2.

The reason for this order is the strength of intermolecular forces between the molecules of these liquids. In H2O, there are strong hydrogen bonds between the molecules which require more energy to break, resulting in a higher boiling point. NH3 also has hydrogen bonding, but it is not as strong as in H2O, resulting in a lower boiling point. SO2 has dipole-dipole interactions between its molecules, which are weaker than hydrogen bonding, resulting in a lower boiling point than NH3. Finally, CO2 only has weak London dispersion forces between its molecules, which are the weakest intermolecular forces, resulting in the lowest boiling point.
To Know more about boiling visit;
https://brainly.com/question/14329098

#SPJ11

Answer:

blended is better than synthetic fibre. because blended fabrics have quality of synthetic and natural fibres so they are more better than fabrics. For example terrycot. Blended Fibres are considered better than individual synthetic fibres because they show the advantages of 2 or more fibres.

By using the oxidation number approach, find the solution to the equation Zn + HNO3 4Zn(NO3)2 Plus N2O + H2O.

Chemical Reaction Type: We only have one displacement reaction for this reaction. Balanced Approaches: By employing diluted HNO3, the reaction between HNO3 with Zn will result in Zn(NO3) + H2.

Balanced Approaches: You have a displacement reaction reaction in this zinc and water reaction. Cold water does not cause the response to occur. Water must be scorching hot or at least very hot. The number the hydrogen atoms just on output side of the formula must be correctly counted in order to balance the equation.

To know more about oxidation visit:
https://brainly.com/question/376562

#SPJ1

The physical property that would make a mineral appropriate to use as an abrasive is hardness.

A mineral with a high level of hardness is able to resist being scratched or abraded, which makes it ideal for use in abrasive applications such as sandpaper. Some minerals that are commonly used as abrasives include diamond, corundum, and garnet. These minerals have a high level of hardness and are able to effectively remove material from a surface through the process of scratching or cutting. The choice of which mineral to use will depend on factors such as the type of material being worked on and the level of abrasiveness required.

To know more about abrasiveness, here

brainly.com/question/9624379

#SPJ4

The osmotic pressure of the 0.2 M NaNO₃ solution would be greater than that of the 0.2 M glucose solution.

Hence, the correct option is C.

The osmotic pressure of a solution depends on the concentration of solute particles, regardless of their chemical nature. In this case, we are comparing a 0.2 M NaNO₃ (sodium nitrate) solution with a 0.2 M glucose solution.

NaNO₃ dissociates into two ions when it dissolves in water - one sodium ion (Na⁺) and one nitrate ion (NO₃⁻). Therefore, each NaNO₃ molecule in solution produces two solute particles. On the other hand, glucose (C₆H₁₂O₆) does not dissociate into ions and remains as individual molecules in solution.

Since the NaNO₃ solution produces more solute particles per molecule than the glucose solution, it will have a greater osmotic pressure. This is because osmotic pressure is directly proportional to the concentration of solute particles.

To know more about osmotic pressure here

https://brainly.com/question/29819107

#SPJ4

Answer:

Title.

Abstract.

Introduction.

Method.

Results and analysis.

Discussion.

Conclusion.

References.

Answer:

They have the exact same name at the first but the yacca plant must be eaten by the yacca moth because if the animal doesn't eat it will die of hunger

Answer:

its B

Explanation:

The relationship between yucca moths and yucca plants is an example of obligate mutualism. Many species of yucca plant can be pollinated by only one species of yucca moth, while those yucca moths use the yucca flowers as a safe space to lay their eggs.

this info can be found on "https://ir.lib.uwo.ca/wurjhns/vol8/iss1/10/#:~:text=The%20relationship%20between%20yucca%20moths,space%20to%20lay%20their%20eggs."

Answer:

the third one

Explanation:

When you breathe in, you inhale oxygen and exhale carbon dioxide

Answer:

false

Explanation:

fission is lots of energy

The electrochemistry underlying the electrical current in a neuron as it is stimulated involves sodium channels opening to allow sodium to enter the cell.
2. The most fundamental variable that can likely explain the evolution of bigger brains is the overall ecological complexity that the animal deals with.

During neuron stimulation, an action potential is generated. This process involves the depolarization of the neuron's membrane, which is achieved by the influx of positively charged ions, primarily sodium ions (Na+). When a neuron is stimulated, voltage-gated sodium channels in the cell membrane open, allowing sodium ions to rapidly enter the cell. This influx of positive charge depolarizes the membrane, creating an electrical current that propagates along the neuron.

Regarding the second question, the most fundamental variable that can likely explain the evolution of bigger brains is the overall ecological complexity that the animal deals with. Animals that inhabit complex and challenging environments often require enhanced cognitive abilities to navigate and respond to their surroundings effectively. The ecological complexity, such as varied food sources, social interactions, and environmental stimuli, can drive the evolutionary pressure for larger brain size and increased cognitive capacity. While factors like diet, sociality, and mating strategies may play a role, the overall ecological complexity is considered a crucial determinant of brain evolution.


To know more about electrochemistry, click here, https://brainly.com/question/32766737

#SPJ11

Explanation:

your answer was correct

the extra money in the budget is for If a employees watch is broken or needs to be fixed we can give out temporary watch for few days until the watch is fixed.

plz give brainlest

Protein denaturation is accompanied by changes in both enthalpy and entropy.

During denaturation, the enthalpy and entropy of the protein are altered. Enthalpy refers to the heat energy involved in the breaking of intra- and intermolecular bonds within the protein structure. In denaturation, an increase in enthalpy is observed as the bonds holding the protein's three-dimensional structure together are disrupted. This increase in enthalpy is due to the energy required to break these bonds.

Simultaneously, the entropy of the system also changes during denaturation. Entropy is a measure of the disorder or randomness in a system. In the folded state, proteins have a lower entropy because their atoms are arranged in an ordered manner. However, during denaturation, the protein's structure becomes more disordered, leading to an increase in entropy.

The balance between enthalpy and entropy determines the overall stability of the protein structure. When the temperature rises, the increase in enthalpy due to bond disruption can overcome the decrease in entropy, leading to denaturation. As a result, the protein loses its functional conformation and may become inactive or form aggregates.

Learn more about enthalpy

brainly.com/question/31663014

#SPJ11

Answer: Materials that do not allow electricity to pass easily through them are called insulators. Rubber, glass, plastic, and cloth are poor conductors of electricity. This is why electrical wires are covered in rubber, plastic, or cloth.

Explanation: I hoped that helped plzz mark me as brainliest!

When water is lost, but electrolytes are retained, the first thing that happens is that moves water from the ICF to the ECF.

The fluid inside of cells, also called the cytoplasm or cytosol, makes up about 60% of the water in the human body, totaling about 7 gallons. Organelles like the nucleus, endoplasmic reticulum, mitochondria, lysosomes, and Golgi apparatus are suspended in and supported by the ICF. Also found in the ICF are cellular building blocks like sugars, proteins, carbohydrates, and lipids.

ECFs are any body fluids that are not inside cells. The two main components of ECF are plasma and interstitial fluid (IF). The balance consists of cerebrospinal fluid, lymph, the synovial fluid in the joints, pleural fluid in the pleural cavities (lungs), pericardial fluid around the heart, peritoneal fluid in the peritoneal cavity (abdomen), and the aqueous humor of the eye. In mammals, milk is also considered an extracellular fluid.

The ICF has higher amounts of potassium, phosphate, magnesium, and protein compared to the ECF. The plasma has high concentrations of sodium, chloride, and bicarbonate, but lower levels of protein as compared to the ICF. While water moves passively via osmosis, sodium and potassium ions move in and out of cells using active transport ion pumps. The pumps are powered by adenosine triphosphate (ATP) to provide the energy to move the ions against their concentration gradients (i.e. sodium moves out of the cell and potassium is pumped in) and maintain the gradients inside and outside the cell.

learn more about ICF and ECF at https://brainly.com/question/17312247.

#SPJ4

Hexanes and ethyl acetate are volatile organic solvents, meaning they can easily evaporate at room temperature and atmospheric pressure. Closed containers are essential when transporting hexanes and ethyl acetate to prevent evaporation, ensure safety, prevent contamination, and reduce odor.

Evaporation of these solvents can lead to the release of harmful vapors into the environment, which can be hazardous to human health and the ecosystem. Additionally, the vapors of these solvents are flammable, posing a fire hazard. Therefore, to prevent the release of these harmful vapors and ensure safe transportation, it is essential to transport hexanes and ethyl acetate in CLOSED containers. These containers must be airtight and designed to prevent leakage or spills during transport.

Hexanes and ethyl acetate are organic solvents that must be transported in CLOSED containers for the following reasons:

1. Evaporation prevention: Closed containers prevent the solvents from evaporating, ensuring that the solvents do not lose their volume or concentration.

2. Safety: Both hexanes and ethyl acetate are flammable liquids. By using closed containers, the risk of ignition due to contact with an open flame, spark, or heat source is minimized.

3. Contamination prevention: Closed containers help maintain the purity of the solvents by preventing contamination from dust, moisture, or other substances that could alter their properties.

4. Odor reduction: Hexanes and ethyl acetate have strong odors that can be unpleasant or harmful if inhaled. Closed containers help to contain these odors and protect those handling the solvents.

Learn more about human health here:
brainly.com/question/1604025

#SPJ11

Answer:

Explanation:

‘it’s a chemical change because this may seem like a decomposition reaction because it seems like the nail is decomposing and falling apart.

Answer:

the rusting of iron is a chemical change because it is two substance reacting together to make a new substance.

Explanation:

Answer:atomic number 10 noble gas

Explanation:

No hablo bien español, pero aquí hay una imagen:

The law of diminishing marginal rate of substitution indicates that the rate at which one input can be substituted for another decreases as the quantity of one input increases, leading to isoquants being bent toward the origin.

In other words, as the quantity of one good increases, the individual is willing to sacrifice fewer units of the other good to obtain an additional unit of the first good. This reflects a diminishing rate of substitution between the two goods.

The reason why the law of diminishing marginal rate of substitution suggests that isoquants must be bent toward the origin is rooted in the concept of diminishing marginal utility. As more units of a particular input (e.g., labor or capital) are added while holding other inputs constant, the additional output gained from each additional unit of the input will decrease. This diminishing marginal productivity leads to a decreasing MRS.

When isoquants (which represent different combinations of inputs that produce the same level of output) are bent toward the origin, it reflects the fact that as more of one input is used, the amount of the other input that needs to be substituted decreases. This bending signifies the diminishing MRS and captures the idea that a larger quantity of one input can be substituted for a smaller quantity of the other input to maintain the same level of output.

Overall, the law of diminishing marginal rate of substitution indicates that the rate at which one input can be substituted for another decreases as the quantity of one input increases, leading to isoquants being bent toward the origin.

To know more about marginal rate of substitution, click here, https://brainly.com/question/30763866

#SPJ11