Fossil Fuels are an ________ resource that people are hoping to replace with ______ resources.​

Answer: 15 grams of salt are there in 5 L of solution.

Explanation:

Concentration of a solution is defined as the number of grams of solute dissolved per liter of the solution.

Given : Concentration of solution : 3 g/L

1 Liter of solution contains = 3 gram of salt

Thus 5 L of solution contains = [tex]\frac{3g}{1L}\times 5L=15g[/tex]

Thus 15 grams of salt are there in 5 L of solution.

Answer: D. Condensation

Explanation: because condensation happens when water vapor cools and turns into clouds

The bond angle 1 of creatine is approximately 120 degrees while bond angle 2 is approximately 180 degrees. These angles are consistent with the expected angles for a trigonal planar and linear arrangement of atoms, respectively. The shape of creatine, determined by these bond angles, is important for its function in the body.

Creatine is an amino acid derivative that occurs naturally in the body. It is made up of three amino acids: arginine, glycine, and methionine. The structure of creatine, including the bond angles, can be determined using computational tools like molecular modelling software. The bond angles in creatine are determined by the arrangement of the atoms around each bond. Bond angle 1 is the angle between the two nitrogen atoms and the central carbon atom. This angle is approximately 120 degrees, which is consistent with the expected angle for a trigonal planar arrangement of atoms.

Bond angle 2 is the angle between the nitrogen atom and the carbon atom in the guanidine group. This angle is approximately 180 degrees, which is consistent with the expected angle for a linear arrangement of atoms. The bond angles in creatine are important because they determine the shape of the molecule, which in turn affects its properties and functions in the body. For example, the shape of creatine allows it to bind to ATP, which is a molecule that provides energy for cellular processes.

In conclusion, the bond angle 1 of creatine is approximately 120 degrees while bond angle 2 is approximately 180 degrees. These angles are consistent with the expected angles for a trigonal planar and linear arrangement of atoms, respectively. The shape of creatine, determined by these bond angles, is important for its function in the body.

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The carbonyl compound with the lowest Keq for the reaction with HCN to produce a cyanohydrin is H₂CO (formaldehyde)

The equilibrium constant (Keq) for the reaction of a carbonyl compound with HCN to produce a cyanohydrin depends on the stability of the resulting cyanohydrin. Generally, more stable cyanohydrins will have higher Keq values.

In this case, we can compare the stability of the cyanohydrins formed from each of the given carbonyl compounds to determine which one has the lowest Keq.

Among the given options:

Cyclohexanone forms a stable cyanohydrin.

2-Methylcyclohexanone forms a cyanohydrin with an additional methyl group, which provides some steric hindrance but still relatively stable.

CH₃CHO (acetaldehyde) forms a cyanohydrin with a smaller alkyl group, making it more reactive but still reasonably stable.

H₂CO (formaldehyde) forms a cyanohydrin with the smallest alkyl group, making it the least stable among the options.

Therefore, the carbonyl compound with the lowest Keq for the reaction with HCN to produce a cyanohydrin is H₂CO (formaldehyde).

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The diameter of the capillary tube is approximately 8.12 micrometers.

To find the diameter of the capillary tube, we can use the relationship between the height of the liquid column in a capillary tube and the surface tension.

The formula for the height of the liquid column in a capillary tube is given by:

h = (2 × T) / (ρ × g × r)

where:

h is the height of the liquid column,

T is the surface tension of the liquid,

ρ is the density of the liquid,

g is the acceleration due to gravity, and

r is the radius of the capillary tube.

In this case, we are given:

h = 8.4 cm = 0.084 m (converted to meters),

T = 0.07199 kg/s²,

ρ = 1.0 g/cm³ = 1000 kg/m³ (converted to kg/m³), and

g = 9.8 m/s².

We can rearrange the formula to solve for the radius of the capillary tube:

r = (2 × T) / (ρ × g × h)

Substituting the given values:

r = (2 × 0.07199 kg/s²) / (1000 kg/m³ × 9.8 m/s² × 0.084 m)

Calculating this expression gives us:

r ≈ 4.06 x 10⁻⁶ m

Finally, we can find the diameter of the capillary tube by doubling the radius:

diameter = 2 × r = 2 × 4.06 x 10⁻⁶ m = 8.12 x 10⁻⁶ m

Therefore, the diameter of the capillary tube is approximately 8.12 micrometers.

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Answer: The red on is attracted to The north pole

Explanation:

The nucleus of an atom is small compared to the size of the atom because of Rutherford's nuclear theory. Rutherford's nuclear theory states that most of the mass of an atom and all of its positive charge are contained in a small core called the nucleus.

This statement is consistent with the fact that the nucleus of an atom is small compared to the size of the atom. Rutherford's nuclear theory states that the nucleus of an atom is small compared to the size of the atom, and, therefore, the nucleus has a relatively low mass compared to the mass of an atom.

Rutherford's nuclear theory states that the nucleus is small but contains about half of the mass of an atom. The nuclear theory was discovered by Ernest Rutherford in 1911.

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The aluminum chloride solution will be yellow in the presence of the indicator chlorophenol red due to acidic salt. Thus, option B is correct.

To determine the solutions, which will turn yellow color mainly in the presence of indicator chlorophenol red. So we need to consider the chemical properties of that compound and their effects on the indicator.

Aluminum chloride consists of acidic salt which hydrolyzes the presence of water to produce acidic conditions which further turns the indicator turns yellow. This color change of the indicator is due to the pH value of the solution. The acidic conditions will turn this indicator to yellow color.

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The sample that has the largest number of atoms is 1g of Chlorine(Cl). That is option C.

To calculate the sample with the largest number of atoms, the various number of atoms of each sample should be determined.

That is;

For sample A;

Na = 23 g

But 1g of Na= 6.022×10²³

23g of Na= 6.022×23 = 1.39×10²¹

For sample B;

Li = 7g

But 1 g of Na = 6.022×10²³

7 g of Na = 7× 6.022×10²³

= 4.22×10²⁴

For sample C;

Cl2= 71

But 1 g of Cl = 6.022×10²³

71g of Cl = 71×6.022×10²³

= 4.28 × 10²⁵

For sample D;

Au = 197

But 1g of Au = 6.022×10²³

197g = 197×6.022 × 10²³

= 1.186 × 10²⁶

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Complete question:

Which one of the following will have greatest number of atoms?

A.) 1g Na

B.) 1g Li

C.) 1g Cl2

D.) 1g Au

Answer:

B

Explanation:

It is important to stretch your muslces as a warm up prior to any exercise.

Answer:

B

Explanation:

Answer:  0.548 mol

Explanation:

Pathogenic bacteria are the most problematic in the food industry. The term "pathogenic" refers to any bacteria that are capable of causing illness when consumed by humans or animals.

Option A is correct

Pathogenic bacteria are often found in foods that are not cooked or handled correctly. This includes raw meat, unpasteurized dairy products, and foods that are stored at incorrect temperatures for an extended period of time. It is crucial for food industry professionals to follow strict safety protocols to minimize the risk of pathogenic bacteria contaminating their products, leading to foodborne illnesses.Foodborne illnesses can be caused by a variety of microorganisms, including bacteria, viruses, and parasites. Pathogenic bacteria are a significant concern in the food industry, as they can cause serious illness and even death in vulnerable populations such as young children, pregnant women, and the elderly. The most problematic bacteria in the food industry are those that are pathogenic and are capable of multiplying quickly in the food environment. Pathogenic bacteria can cause food poisoning, which is a severe illness that can result in dehydration, fever, vomiting, and diarrhea.

The symptoms can be severe and can lead to hospitalization or even death if left untreated. The most common pathogenic bacteria found in food are Salmonella, Listeria, and E.coli. These bacteria are often found in raw or undercooked meat, unpasteurized dairy products, and fruits and vegetables that are not washed correctly. It is essential for food industry professionals to follow strict safety protocols to prevent the growth and spread of these bacteria. Proper handwashing, storage, and cooking techniques can help minimize the risk of foodborne illnesses caused by pathogenic bacteria. In conclusion, pathogenic bacteria are the most problematic in the food industry. Food safety protocols should be followed to minimize the risk of foodborne illnesses caused by these bacteria.

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To find the percent volume of KNO3 in the solution, we need to compare the volume of KNO3 to the total volume of the solution.

The initial volume of the solution is 512 liters of water. When we add 29.0 liters of KNO3 to it, the total volume of the solution becomes 512 + 29.0 = 541.0 liters.

Now, to calculate the percent volume of KNO3, we divide the volume of KNO3 (29.0 liters) by the total volume of the solution (541.0 liters) and multiply by 100:

Percent volume of KNO3 = (29.0 / 541.0) * 100 ≈ 5.36%

Therefore, the solution made by adding 29.0 liters of KNO3 to 512 liters of water has approximately 5.36% volume of KNO3.

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Answer:

1.67 × 10^9

Explanation:

Answer:

H2

Explanation:

I would say H2 cause CH4 have less hydrogen gas .

At standard temperature and pressure conditions, both the balloons have equal grams of gas.

Standard temperature and pressure are defined as a standard set of conditions required for experimental measurements which are established to allow comparison between different sets of data.

Standards which are commonly used are those International Union of pure and applied chemistry and national institute of standards and technology.These are not universally accepted standards but are the ones which are commonly used.

Standard conditions of pressure and temperature are necessary to define standard reference conditions used to express volumes of liquids and gases.

These values are important to physicists, chemists ,engineers ,pilots and navigators.

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The correct sequence of reactions to convert the compound "?" to the desired product "y" is: 1) xs NaNH2, 2) Br2, and 3) H2O.

To convert the compound "?"to the desired product "y", the sequence of reactions that would allow for this conversion is:

xs NaNH2 : 2) Br2 : 3) H2O

In the first step, the compound "?" reacts with excess NaNH2 (sodium amide) to generate a nucleophile. NaNH2 is a strong base that can deprotonate acidic hydrogen atoms. This reaction creates a reactive species that can participate in substitution reactions.

Next, in the second step, the compound obtained from the first step reacts with Br2 (bromine). This is a nucleophilic substitution reaction (SN2) where the nucleophile displaces the bromine atom, leading to the formation of an intermediate compound.

Finally, in the third step, the intermediate compound is treated with water (H2O). This hydrolysis reaction helps to convert the intermediate into the desired product "y" by replacing the remaining bromine atom with a hydroxyl group (OH-).

The correct sequence of reactions to convert the compound "?" to the desired product "y" is: 1) xs NaNH2, 2) Br2, and 3) H2O. This sequence involves deprotonation of "?" by NaNH2, nucleophilic substitution with Br2, and hydrolysis with water to achieve the desired conversion.

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Mendeleev arranged the elements in the periodic table on the basis of atomic masses and stated the behavior of the elements in a periodic law. The periodic law is when elements arranged by the atomic masses they exhibit the presence of similar properties. Mendeleev focused on the chemical properties of the elements and Meyer focused on the physical properties of the elements. The change in the periodic table is that the elements are now arranged in the order of their atomic numbers instead of their atomic masses.

Answer:

produce OH-

Explanation:

Answer:

0.013MB

Explanation:

a)The IUPAC name for the compound (CH3CH2)3CCH2CH2CH(CH3)2 is 2,2,3-trimethylpentane.

b) The IUPAC name for the compound (CH3)2CHC(CH3)2CH2CH2CH3 is 3,3-dimethyl-2-methylbutane.

a) The compound (CH3CH2)3CCH2CH2CH(CH3)2 is named 2,2,3-trimethylpentane. The name is derived by identifying the longest continuous carbon chain, which is five carbons in this case.

The substituents are then listed in alphabetical order, preceded by their respective position on the main chain. The compound contains a tert-butyl group [(CH3)3C-] attached to the second carbon atom, and a methyl group (CH3) attached to the fourth carbon atom.

The presence of the three ethyl groups [CH2CH3] on the third carbon and two methyl groups [CH3] on the fifth carbon is indicated by the prefix "trimethyl" and "pentane" signifies the parent alkane with five carbon atoms.

b) The compound (CH3)2CHC(CH3)2CH2CH2CH3 is named 3,3-dimethyl-2-methylbutane. The name is determined by identifying the longest continuous carbon chain, which is six carbons in this case.

The substituents are then listed in alphabetical order, preceded by their respective position on the main chain. The compound contains two methyl groups (CH3) attached to the third carbon atom, denoted as "3,3-dimethyl."

Additionally, there is a methyl group (CH3) attached to the second carbon atom and an ethyl group (CH2CH3) attached to the fourth carbon atom. The name "2-methylbutane" indicates the parent alkane with four carbon atoms, bearing the methyl group on the second carbon atom.

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Answer:

heat flows from the object that has more thermal more energy to the object with less thermal energy

Hypoxic areas, such as those found in the Gulf of Mexico, develop primarily due to option C: die-off from a large phytoplankton bloom uses up the oxygen in water. The correct option is C.

Phytoplankton blooms occur when there is an excessive growth of microscopic algae in the water, often caused by high nutrient levels, such as nitrogen and phosphorus.

These blooms can create dense layers of algae on the water surface. As the algae die and decompose, bacteria consume the organic matter and consume oxygen in the process, leading to a decrease in oxygen levels in the water.

This process is known as eutrophication, and it can deplete oxygen concentrations to a critical level, resulting in hypoxic conditions.

Oxygen levels below 5ppm (option A) can contribute to hypoxia, but the primary cause is the consumption of oxygen by the decomposition of organic matter from the phytoplankton bloom (option C).

Nitrate additions (option B) and the presence of methyl-mercury (option D) can have additional negative impacts on aquatic ecosystems, but they are not the main drivers of hypoxia in this context. The correct option is C.

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The decomposition reaction is 2[tex]H_{2}O_{2}[/tex] → 2[tex]H_{2}[/tex]O + [tex]O_{2}[/tex]

Hence, the correct option is B.

In this reaction, hydrogen peroxide ([tex]H_{2}O_{2}[/tex] ) decomposes into water ([tex]H_{2}[/tex]O

) and oxygen gas ( [tex]O_{2}[/tex]). Hydrogen peroxide is a compound composed of hydrogen and oxygen. Through a decomposition reaction, the hydrogen peroxide molecules split apart, resulting in the formation of water and oxygen.

The balanced equation indicates that for every two molecules of hydrogen peroxide, two molecules of water and one molecule of oxygen gas are produced. This reaction is an example of a decomposition reaction because a single compound (hydrogen peroxide) breaks down into multiple simpler substances (water and oxygen gas).

The decomposition reaction is 2[tex]H_{2}O_{2}[/tex]  → 2[tex]H_{2}[/tex]O + [tex]O_{2}[/tex]

Hence, the correct option is B.

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When a sample of Glc is synthesized, carbon 1(C−1) is isotopically labeled with radioactive 14C. This radioactive Glc ∗is fed into the glycolysis pathway and the carbon 1(C−1) is then oxidized to generate two molecules of pyruvate. The pyruvate produced from the radioactive glucose is also radioactive, as it contains a carbon atom that was labeled with 14C.

The fate of the 14C-labeled carbons can be determined by measuring the amount of radioactivity in different compounds at various time points during glycolysis. This can be achieved by performing a series of experiments in which the radioactive glucose is added to a cell culture, and samples are taken at different time points to measure the amount of radioactivity in various compounds. For example, one might measure the amount of radioactivity in pyruvate, lactate, or CO2, among other things. The experiments might also be done using an animal model, such as a mouse, to examine the fate of the labeled carbons in vivo.Overall, using radioactive Glc is a powerful tool for studying metabolic pathways such as glycolysis, as it allows researchers to track the fate of specific carbon atoms throughout the pathway.

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To determine the number of moles of beryllium (Be) in a thin-foil window weighing 3.24 g, we can use the molar mass of beryllium to convert grams to moles. The correct answer is option O) 0.360 mol.

The molar mass of beryllium (Be) is approximately 9.01 g/mol. To calculate the number of moles, we divide the given mass (3.24 g) by the molar mass of beryllium:

Number of moles = Mass of substance / Molar mass

Number of moles = 3.24 g / 9.01 g/mol ≈ 0.3596 mol

Rounding to the appropriate number of significant figures, the number of moles of beryllium in the thin-foil window is approximately 0.360 mol, which corresponds to option O) 0.360 mol.

Note: It's important to pay attention to the significant figures in the given mass (3.24 g) and round the answer accordingly. In this case, the answer is rounded to three significant figures since the given mass has three significant figures.

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when 5.20 × 10⁻³ moles of N₂O₅ gas completely reacts, 2.60 × 10⁻³ mol of NO₂ gas is formed.

What is Moles?

A mole is a unit of measurement of the quantity of a substance in the International System of Units. It is defined as exactly 6.02214076×10²³ particles, which can be atoms, molecules, ions or electrons.

To calculate the quantity of moles of NO₂ gas formed, we need to use the stoichiometric coefficients from the balanced reaction.

The balanced equation is:

2 N₂O₅(g) → 4 NO₂(g) + O₂(g)

According to the balanced equation, for every 2 moles of N₂O₅ that react, 4 moles of NO₂ are produced.

So, we can set up a ratio:

2 moles of N₂O₅ : 4 moles of NO₂

Now, we can use this ratio to calculate the moles of NO₂ gas formed when 5.20 × 10⁻³ mol of N₂O₅ gas reacts.

Given: Moles of N₂O₅ = 5.20 × 10⁻³ mol

Using the ratio:

4 moles of NO₂

------------------- = x moles of NO₂

2 moles of N₂O₅

x = (4/2) × (5.20 × 10⁻³) = 2.60 × 10⁻³ mol

Therefore, when 5.20 × 10⁻³ mol of N₂O₅ gas completely reacts, 2.60 × 10⁻³ mol of NO₂ gas is formed.

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Answer:

C. throat

Explanation: