Give one example of a combination reaction that is a redox reaction and another that is not a redox reaction.

Answer:

No

Explanation:

I think because liquid nitrogen is only made by 1 substance which is nitrogen that exist as a gas.. It only become liquid when the temperature is very cold not because of other combination of elements.. Hope it helps

According to the meaning of a fossil, a fossil is a once-living organism's remains that have been kept by nature

A fossil is any conserved remnants, imprint, or evidence of any once-living object from a previous geological era (from the Classical Latin fossilis, lit. "obtained by excavating"). Examples include exoskeletons, bones, shells, animal or microbe impressions in stone, items kept in amber, hair, petrified wood, and Genetic traces. The sum of fossils is known as the fossil record.

The study of fossils, including their age, creation process, and evolutionary importance, is known as palaeontology. If a specimen is more than 10,000 years old, it is typically regarded as a relic.

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Answer:yes

Explanation:

Because modern periodic table is designed in such a way that it can accomodate any new elemet which may be discovered in future

We have that for the Question "when and if element 119 is discovered predict where it would be placed on the modern periodic table" it can be said that With the existing information the element 119 will most likely be i the 8th period and the first group of the periodic table

From the question we are told

when and if element 119 is discovered predict where it would be placed on the modern periodic table

Generally

The Periodic table is naturally designed to accommodate new elements based on there properties

Therefore

With the existing information the element 119 will most likely be i the 8th period and the first group of the periodic table

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Water is able to dissolve many compounds is the 2) the fact that water molecules are polar.

When a liquid spreads over the surface flippantly with out the formation of droplets, a floor is wetted. If that liquid is water, the surface is hydrophilic. Water molecules have a polar association of oxygen and hydrogen atoms—one side (hydrogen) has a wonderful electric charge and the alternative side (oxygen) had a terrible rate. This lets in the water molecule to turn out to be drawn to many different unique varieties of molecules. Generally speaking, water is right at dissolving ions and polar molecules, however terrible at dissolving nonpolar molecules.

Thus, option 2 is the correct choice.

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Answer:

Boron Carbonate; B₂(CO₃)₃

Explanation:

For names, carbonide does not exist; that rules out the first option. Carbide refers to just a carbon atom, not carbon and oxygen as in the polyatomic ion carbonate. That rids us of the third option. We are left with boron carbonate with the formula BCO or boron carbonate with the formula B₂(CO₃)₃.

Recall the carbonate polyatomic ion's formula: CO₃²⁻

Thus BCO cannot be the formula.

Option 4 is your answer, Boron Carbonate; B₂(CO₃)₃.

To further check your answer, observe the oxidation states of boron and the polyatomic ion carbonate. Boron can exist in oxidation states of either 2+ or 3+, and carbonate is only 2-; in this formula, boron will exhibit a 3+ state to balance out with carbonate.

2x3+ = 6+; 3x2- = 6-

6+ + 6- = 0; balanced

As a result, when two objects are close together and have enormous masses, their gravitational attraction is strongest.

According to Newton's law of universal gravitation, any two bodies in the universe are attracted to one another by a force that is inversely proportional to the square of the distance between them and a direct relationship between their mass products In other words, every particle of matter in the cosmos is attracted to every other particle by a force that is inversely proportional to the square of the distance between them and proportionate to their masses. Sir Issac Newton created the law in 1687.

According to their masses and separation, two objects will gravitationally pull one another.

The attractive force between two objects (F) is determined by Newton's law of universal gravitation and is equal to G times the product of their masses (m1m2) divided by the square of their distance

(r2), or F = Gm1m² / r2².

As a result, when two objects are close together and have enormous masses, their gravitational attraction is strongest.

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Answer:

D

Explanation: Decreasing the temperature of the system would lower the reaction rate.

Answer:

d

Explanation:

i just took the test

Answer:

compression

Explanation:

Hope it helps!!!!!!!!!!

Answer:

1) Elements consist of small particles  called atoms

2) All atoms of the same element are identical and different elements have      different types of atom.

3) Atoms can neither be created nor destroyed.

4) chemical compounds are formed when atoms of different elements join in simple ratios to form ‘compound atoms’

Answer: B 25 C

Explanation:

The rate of reaction when 0. 4g of zinc trioxocarbonate (IV) reacted with dilute hydrochloric acid, zin chloride was produced and carbon (IV) oxide evolved if the reaction took 2minute is 0.0016 mol/min

The rate of reaction is the time taken for product molecules to appear or the time taken for reactant molecule to be converted and the rate of reaction = mole of product formed/time taken

And the equation of the reaction is

ZnCO₃ + 2HCl → ZnCl₂ + H₂O + CO₂

And the molar mass of zinc carbonate = 125.39 = 8g/mol

Mole of zinc carbonate converted = 0.4/125.38

Time taken = 2 min

Rate of reaction = 0.0032/2

Rate of reaction = 0.0016 mol/min

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Answer:

C3H8 + 5 O2 ------> 3 CO2 + 4 H2O

Explanation:

Answer:

23%

Explanation:

the reason is because it rose one degree. during the wait of the 40.seconds I had to wait to re post my new found hypothesis

Answer:

Aqueous sodium ions, Aqueous chloride ions

Explanation:

Sodium chloride dissociates into Na+ and Cl- ions in water

Sodium chloride crystals may also be present in case of saturated solution

Answer:

Explanation:

3 )

18 grams of water contains 16 grams of oxygen .

Let the grams of oxygen needed be m .

yield is 75%

Only 75 % of m will make water .

.75 m will form water .

water formed by .75 m of oxygen = 18 / 16 x .75 m

Given that

18 / 16 x .75 m = 79

m = (16 x 79) / ( 18 x .75 )

= 93.63 grams .

So oxygen required is 93.63 grams .

4 )

One mole of water contains 0.5 moles of oxygen.

2 moles of oxygen will make 2 /,5 = 4 moles of water .

percent yield is 82 % ,

so water produced = .82 x 4 = 3.28 moles of water.

Answer:

When you combine the solid (baking soda) and the liquid (vinegar), the chemical reaction creates a gas called carbon dioxide. Carbon dioxide is invisible, except as the bubbles of gas you may have noticed when the vinegar and baking soda mixture began to fizz.

Explanation:

To  determine the major organic product of a given reaction, you need to identify the reactants, understand the reaction, consider possible transformations, and then draw the structure of the major product. Keep in mind the guidelines provided in the question and carefully analyze the information given to arrive at the correct answer

The question asks you to draw the structure(s) of the major organic product(s) of a given reaction. You are not required to consider stereochemistry, and if there are multiple major products possible, you should draw all of them. If no reaction occurs, you should draw the organic starting material. Let's break down the steps to determine the major organic product(s):

1. Identify the reactants: Look at the given reaction and identify the organic starting material (reactants).

2. Understand the reaction: Analyze the reaction and identify the functional groups involved, as well as any reagents or catalysts mentioned. This will help you determine the type of reaction occurring.

3. Determine the major product(s): Based on the reactants and the type of reaction, consider the possible transformations that can occur. Look for any bonds that can be broken or formed, and think about how the functional groups might react with each other. Consider factors such as stability, reactivity, and regioselectivity.

4. Draw the major product(s): Using the knowledge gained from step 3, draw the structure(s) of the major organic product(s) that you have determined. Make sure to include any new functional groups or bonds formed as a result of the reaction.

5. Consider multiple major products: If there are multiple major products possible, draw all of them. This could occur if there are multiple reactive sites or if the reaction can proceed through different pathways.

Remember to follow the guidelines given in the question regarding sketching and separating multiple products. If you are uncertain about any part of the reaction or the products, it is always helpful to double-check your work or consult additional resources to ensure accuracy.

In summary, to determine the major organic product(s) of a given reaction, you need to identify the reactants, understand the reaction, consider possible transformations, and then draw the structure(s) of the major product(s). Keep in mind the guidelines provided in the question and carefully analyze the information given to arrive at the correct answer(s).

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In stage II of glycolysis, the reactions occur in a specific order. The first reaction is the oxidation of aldose coupled with phosphorylation, which results in the production of a phosphoglyceric acid. The second reaction is the isomerization of the phosphoglyceric acid to a positional isomer.

Next, there is a dehydration of the phosphoglyceric acid. The fourth reaction is substrate-level phosphorylation, which produces another phosphoglyceric acid. Finally, there is another substrate-level phosphorylation reaction, which produces an alpha-keto acid. Overall, these reactions contribute to the breakdown of glucose into pyruvate, which can then be used to produce ATP through the process of cellular respiration. The phosphoglyceric acid and alpha-keto acid that are produced in these reactions can also be used as precursors for other metabolic pathways within the cell. Understanding the order and specifics of these reactions is important for understanding the process of glycolysis and its role in cellular metabolism.

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The structure for 5-chloro-2-propyl-1-heptanol can be drawn by drawing a 7 carbon chain with (OH) functional group on C1, adding propyl group on C2 and  Cl on C5                                  

5-Chloro-2-propyl-1-heptanol is an organic compound that belongs to the class of alcohols.

The IUPAC name of the compound is 5-chloro-2-propylheptan-1-ol, which denotes the position of the hydroxyl group on the carbon chain. The prefix "heptan-" refers to the seven-carbon chain, and the suffix "-ol" denotes the presence of an alcohol functional group (-OH).

5-Chloro-2-propyl-1-heptanol is a colorless to pale yellow liquid with a strong odor. It is a primary alcohol. It is a versatile chemical intermediate that can be used to prepare a variety of other compounds, including pharmaceuticals, agrochemicals, and flavors. It is also used as a solvent and a reagent in organic synthesis

Thus, the structure for 5-chloro-2-propyl-1-heptanol can be drawn by drawing a 7 carbon chain with (OH) functional group on C1, adding propyl group on C2 and  Cl on C5  

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"explain the importance of carbon bonding in biological molecules"☝️

Answer:

b. Atoms are neither created nor destroyed in a chemical reaction

Explanation:

B is correct, because the law of conservation of mass tells us that during a chemical reaction, there is no net gain or loss of mass. Mass comes from the atoms themselves that are participating in the reaction, so there is no gain or loss (creation or destruction) of atoms.

Answer:

The crane should have an electromagnet attached to its arm. The electromagnet: should have a soft iron core made from a bundle of short lengths of iron wire, must be strong enough to pick up several steel paperclips, nails or coins. Work on your own. This task will be assessed.

Explanation:

To calculate the pH of the intermembrane space, we will use the relationship between the Gibbs free energy change (ΔG) for H+ transport and the difference in proton concentrations (ΔpH).

The Nernst equation can be employed for this purpose. Given ΔG = 20 kJ/mol, temperature T = 37°C (or 310.15 K), and Δψ = 170 mV, we can find the ΔpH.
First, convert Δψ to joules (J) by multiplying by the Faraday constant (F) and the charge of an electron (e):
Δψ (J/mol) = 170 mV × 1e-3 V/mV × F × e ≈ 32.73 J/mol
Then, use the following equation to calculate ΔpH:
ΔG = -RT ln(10) × ΔpH + Δψ
Where R is the gas constant (8.314 J/mol K) and T is the temperature in Kelvin. Rearrange the equation and solve for ΔpH:
ΔpH = (ΔG - Δψ) / (-RT ln(10)) ≈ (-20,000 J/mol + 32.73 J/mol) / (-8.314 J/mol K × 310.15 K × ln(10)) ≈ 1.24
Finally, calculate the pH of the intermembrane space:
pH_intermembrane = pH_matrix - ΔpH = 7.7 - 1.24 ≈ 6.46
Thus, the pH of the intermembrane space is approximately 6.46.

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Answer:

G

Explanation:

The atmosphere is divided into five different layers, based on temperature. The layer closest to Earth's surface is the troposphere, reaching from about seven and 15 kilometers (five to 10 miles) from the surface. The troposphere is thickest at the equator, and much thinner at the North and South Poles.

answer is G Atmosphere

Answer:

2 lol

Explanation:

The amount or initial volume of the acid required is determined as 60 mL.

The amount of 12.5 molar acid required to create a 250.0 mL solution is calculated by using the following formula

C₁V₁ = C₂V₂

Where

The given parameters include;

Initial concentration of the acid, C₁ = 12.5 M

Final concentration of the acid, C₂ = 3.0 M

Final volume of the acid, V₂ = 250.0 mL

V₁ = ?

The amount or initial volume of the acid required is calculated as;

12.5 (V1) = 3  x 250

V₁ = (3 x 250 ) / 12.5

V₁ = 60.0 mL

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Answer:

please brainliest

Explanation:

the equation formula answer is \(x^{2} fxb\sqrt{3\)

Answer:

the equation formula answer is x2 fxb\(\sqrt{3}\)

Answer:

You have about 6158 Molecules of 02.

Explanation:

Maintaining the recrystallization solvent at a high temperature is necessary for dissolving the crude benzoic acid efficiently, increasing solubility, removing impurities, and saving time during the recrystallization process.

The recrystallization process is a technique used to purify solid compounds. In the case of crude benzoic acid, it is necessary to dissolve it in a solvent and then allow it to crystallize again to obtain a pure sample.

Maintaining the recrystallization solvent at a high temperature is important for several reasons:

1. Solubility: The solubility of most solids increases with temperature. By using a high-temperature solvent, we can dissolve more crude benzoic acid, increasing the efficiency of the recrystallization process.

2. Impurities: The high temperature helps to dissolve impurities present in the crude benzoic acid. These impurities may include other organic compounds or inorganic salts that are less soluble at high temperatures. As a result, they will remain in the solution while the crude benzoic acid dissolves.

3. Fast dissolution: Higher temperatures facilitate the dissolution of the crude benzoic acid, reducing the time needed for the recrystallization process. This can be particularly useful when working with large quantities of crude benzoic acid or when time is limited.

However, it is important to note that the recrystallization solvent should not be too hot. If the temperature is too high, it may lead to the decomposition of the compound or the formation of impurities. Therefore, it is crucial to find the right balance between temperature and solubility.

However, it is important to use caution and avoid excessive temperatures to prevent decomposition or the formation of impurities.

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