An rer of 0.95 would indicate that we are using what macronutrient as the primary source of energy for the given activity?
Answers
An RER value of 0.95 indicates that carbohydrates are the primary source of energy for the given activity.
The RER (Respiratory Exchange Ratio) is a value that indicates the ratio of carbon dioxide produced to oxygen consumed during metabolism. It is used to determine the primary macronutrient being used as a source of energy for a given activity.
An RER of 0.95 suggests that carbohydrates are the primary source of energy for the activity. This is because carbohydrates have a higher ratio of carbon dioxide produced to oxygen consumed compared to fats or proteins.
To understand this further, let's consider an example. Imagine you are performing a high-intensity exercise like sprinting. During intense exercise, your body requires a quick and readily available source of energy, which is provided by carbohydrates. Since carbohydrates are broken down rapidly, more carbon dioxide is produced in relation to the oxygen consumed, resulting in an RER value close to 0.95.
It's important to note that the RER value can vary depending on the intensity and duration of the activity, as well as the individual's fitness level and diet. Therefore, it is not a fixed value but rather a tool used to understand the fuel source utilized during metabolism for a specific activity.
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Related Questions
True or false: The formation elements of a UCC contract are more difficult to meet than the formation requirements of a common law contract.
Answers
The formation elements of a UCC (Uniform Commercial Code) contract are generally considered to be less rigid and more flexible compared to the formation requirements of a common law contract. The following statement is False
Under common law, contracts often require specific elements such as offer, acceptance, consideration, and mutual assent. These elements are typically more strict and formal, requiring clear and unequivocal agreement between the parties. On the other hand, the UCC (Uniform Commercial Code) provides a set of rules that govern contracts for the sale of goods. It allows for more relaxed requirements and offers more flexibility in contract formation. For example, the UCC recognizes the concept of "open terms" where certain contract terms can be left open or implied.
The UCC also provides default rules in situations where the parties have not explicitly agreed upon certain terms. This allows for a more practical and efficient formation process, especially in commercial transactions where negotiations may be ongoing and the parties may not have reached a final agreement on every aspect of the contract. Overall, the UCC's formation requirements are generally considered to be less stringent and more adaptable compared to the traditional common law contract formation elements.
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1. What three characteristics determine the type of sedimentary rock?
Answers
Answer:
Characteristics of Sedimentary Rocks. ● The color of the sedimentary rock is determined by the content of the strata that were pressed together to form it. If the layers have a high organic content, the rock is usually gray to black in color. On the other hand, high amount of minerals give the rock the color of the mineral.
Hopefully, this helps! :D
Answer:
texture
color
and another one is, well
Please HELP due for science
Answers
Answer: The specimens appears larger with a higher magnifications because a smaller area of the object is spread out to cover the filed view of your eye.
Explanation:
Which substance is considered to be neutral on the pH Scale? *
2 points
battery acid
pure water
bleach
ocean water
Answers
Answer:
Pure Water
Explanation:
Battery acid is well and acid
Bleach is a base
Ocean water is impure so it could lean either way
When is electrolysis used to extract metal?
Answers
Answer:
Explanation:
electrolysis is the technique that use direct current to drive a non spontaneous chemical reaction chemical reaction is the gain or lose of electron this technique is use to extract metal from theirs ores
Which reaction will most likely take place based on the activity series?
Li > K > Ba > Ca > Na > Mn > Zn > Cr > Fe > Cd > Ni > H > Sb > Cu > Ag > Pd > Hg > Pt
A)Pt + FeCl3 Right arrow
B)Mn + CaO Right arrow.
C)Li + ZnCO3 Right arrow.
D)Cu + 2KNO3 Right arrow.
Answers
According to the activity series , the chemical equation which is correct or chemical reaction which will most likely take place is Li + ZnCO₃ as Li is more reactive than zinc and it will displace Zn from ZnCO₃.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
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Science!
Pure water and pure salt are poor conductors of electricity. When salt is dissolved in water, the resulting solution conducts electricity well. Which statement explains why this occurs with these substances?(1 point)
The process of dissolving frees the electrons in the solution to move.
The process of dissolving frees the atoms in the solution to move.
The process of dissolving closely binds the ions in the solution.
The process of dissolving more closely binds the electrons in the solution.
Answers
Answer:
facta you from the same thing as you from the samel
Answer:
The first one
The process of dissolving frees the electrons in the solution to move.
Explanation:
what is the importance of polar covalent and hydrogen bonds in the structure of water?
Answers
Answer:
Water is a remarkable substance, and its unique properties are largely due to the presence of polar covalent bonds and hydrogen bonds in its structure. These characteristics play a crucial role in the physical and chemical properties of water, making it essential for life as we know it.
Explanation:
The polar covalent bonds in water arise from the unequal sharing of electrons between oxygen and hydrogen atoms. This results in the oxygen atom having a partial negative charge (δ-) and the hydrogen atoms having partial positive charges (δ+). These charges create polarity within the water molecule, leading to the formation of hydrogen bonds.
Hydrogen bonds occur when the partially positive hydrogen atom of one water molecule is attracted to the partially negative oxygen atom of another water molecule. These hydrogen bonds are relatively weak individually, but when present in large numbers, they contribute to the cohesion, surface tension, and high boiling point of water.
The importance of these bonds is manifold. The cohesion between water molecules due to hydrogen bonding enables water to form droplets, have a high surface tension, and flow freely, facilitating transport within organisms and in the environment. Additionally, hydrogen bonding leads to the high specific heat capacity and heat of vaporization of water, making it an effective regulator of temperature in living organisms and ensuring stable environmental conditions.
Furthermore, hydrogen bonds play a crucial role in the unique properties of water as a solvent. The polar nature of water allows it to dissolve a wide range of substances, including ionic compounds and polar molecules, facilitating various biological processes such as nutrient transport and chemical reactions in cells.
Explain the working of a pressure cooker based on the particle theory of matter.
Answers
Answer:
A pressure cooker works based on Bernoulli's Principle.
Explanation:
trust me u will get what I am saying
A pressure cooker is primarily based on the precept that with the growth in stress, the boiling factor of water increases. it really works by means of capturing the steam which will increase the pressure inside the vessel. due to a boom in pressure, the boiling point of water rises up.
Which process is used in a pressure cooker?Pressure cooking is the method of cooking meals beneath excessive stress steam, using water or a water-primarily based cooking liquid, in a sealed vessel known as a pressure cooker. Excessive pressure limits boiling, and creates higher cooking temperatures which cook meals far greater quickly.
How does a pressure cooker work?A pressure cooker is based on the principle that boiling point of water will increase with the growth in pressure. It really works through shooting the steam that, as it builds up, will increase the strain within the vessel.
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determine th e limitying reactant and the mass of nitrogen that can be formed from 50.0 g n2o4 and 45.0 g n2h4
Answers
The limiting reactant is \(N_2O_4\), and the maximum mass of \(N_2\) that can be formed is 60.55 g.
The balanced chemical equation for the reaction between \(N_2O_4\) and \(N_2H_4\) is:
3 \(N_2H_4\) + \(N_2O_4\) → 4 \(N_2\) + 6 \(H_2O\)
To determine the limiting reactant, we need to calculate the amount of nitrogen (\(N_2\)) that can be formed from each reactant and identify which reactant produces the lower amount of \(N_2\).
For \(N_2O_4\):
Calculate the number of moles of \(N_2O_4\): 50.0 g / 92.02 g/mol = 0.543 mol
Use the balanced equation to determine the moles of \(N_2\) that can be produced: 1 mol \(N_2O_4\) produces 4 mol \(N_2\)
Moles of \(N_2\) that can be produced from \(N_2O_4\): 0.543 mol x (4 mol \(N_2\) / 1 mol \(N_2O_4\)) = 2.172 mol \(N_2\)
For \(N_2H_4\):
Calculate the number of moles of \(N_2H_4\): 45.0 g / 32.05 g/mol = 1.404 mol
Use the balanced equation to determine the moles of \(N_2\) that can be produced: 3 mol \(N_2H_4\) produces 4 mol \(N_2\)
Moles of \(N_2\) that can be produced from \(N_2H_4\) : 1.404 mol x (4 mol \(N_2\) / 3 mol \(N_2H_4\)) = 1.872 mol \(N_2\)
From the calculations above, we see that \(N_2O_4\) produces the lower amount of \(N_2\), so it is the limiting reactant. The maximum amount of \(N_2\) that can be formed is 2.172 moles.
To calculate the mass of \(N_2\) formed, we use the molar mass of \(N_2\), which is 28.02 g/mol:
Mass of \(N_2\) formed: 2.172 mol x 28.02 g/mol = 60.55 g
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Ammonia, nh3, for fertilizer is made by causing hydrogen and nitrogen to react at high temperature and pressure. How many moles of ammonia can be made from 0.15 moles of nitrogen gas? _h2+_02 to _nh3
Answers
Answer:
\(0.30molNH_3\)
Explanation:
Hello there!
In this case, since the reaction for the formation of ammonia is:
\(3H_2+N_2\rightarrow 2NH_3\)
We can evidence the 1:2 mole ratio of nitrogen gas to ammonia; therefore, the appropriate stoichiometric setup for the calculation of the moles of the latter turns out to be:
\(0.15molN_2*\frac{2molNH_3}{1molN_2}\)
And the result is:
\(0.30molNH_3\)
Best regards!
if you use too much hot solvent when dissolving your crude compound, how will that impact the recovery of your compound and why?
Answers
Recrystalization will occur.The solution may become too diluted for crystals to form if you add too much solvent. Impurities will be captured by a hastily formed crystal's lattice. The crystals that result will also be smaller.
What is Recrystalization?Recrystallization is a physical process used to separate compounds based on how soluble they are. Heating the material to dissolve the compound with impurities in a mixture of a suitable solvent completes the procedure. We can remove the desired chemical or contaminants from the mixture using this method.
The solution may become too diluted for crystals to form if you add too much solvent. The flask needs to be gently cooled, first at room temperature and then in cold water. Impurities will be captured by a hastily formed crystal's lattice. The resulting crystals will also be smaller.
This method is used to harden steel in order to eliminate all strain hardening side effects, including the significant plastic deformation brought on by cold working.The crystals that frequently form when the compound precipitates out gave it its name. The natural expansion of larger ice crystals at the expense of smaller ones is another definition of recrystallization.Some commonly effective mixes include diethyl ether-methanol (or ethanol) for polar molecules (particularly esters, alcohols, and hydrocarbons) and diethyl ether-petroleum ether (or benzene) for strongly linked solids (notably amides, alcohols), as well as many natural products.The three main types of recrystallization are;
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Fatty acid groups are referred to as ________ groups.
A) Acetyl
B) Acyl
C) Prenyl
D) Isoprenoid
E) Isopentenyl
Answers
Fatty acid groups are referred to as B) acyl groups.
Fatty acids are organic compounds that consist of a long hydrocarbon chain with a carboxyl group (-COOH) at one end. The hydrocarbon chain is composed of carbon and hydrogen atoms, and its length can vary. Fatty acids play essential roles in various biological processes and are major components of lipids, including triglycerides and phospholipids.
When a fatty acid is involved in chemical reactions or is attached to other molecules, it typically undergoes a process called activation, where it is converted into an acyl group. An acyl group is formed by replacing the -OH (hydroxyl) group of the carboxyl group with an -OR (alkoxy) group. The -OR group can be derived from various molecules, such as coenzyme A (CoA) or other acyl carrier proteins.
For example, when a fatty acid is activated for incorporation into a triglyceride molecule, it forms a triglyceride acyl group. Similarly, when a fatty acid is incorporated into a phospholipid molecule, it forms a phospholipid acyl group. The acyl group represents the hydrocarbon chain of the fatty acid, which may vary in length and saturation.
Therefore, the correct answer to the question is B) Acyl.
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Identify the change in state that does not have an increase in entropy A) gasoline freezing B) water boiling C) ice melting D) dry ice subliming E) water evaporating
Answers
In this particular question, the change in state that does not have an increase in entropy is A) gasoline freezing.
Entropy is a concept in thermodynamics that represents the measure of disorder or randomness in a system. In other words, it is the degree of uncertainty or unpredictability associated with a given system.
When a substance freezes, it goes from a liquid state to a solid state. During this process, the molecules in the substance slow down and become more ordered. This means that the entropy of the system decreases rather than increases, as it would during other changes of state like boiling or melting.
Therefore, the answer to this question is A) gasoline freezing.
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Among the following radioactive parent isotopes, which is likely to be used for specimens less than 75,000 years old? Potassium-40 Uranium-238 Rubidium-87 Carbon-14 (C)
Answers
Carbon-14 (C) is likely to be used for specimens less than 75,000 years old.
Carbon-14, or radiocarbon, is a radioactive isotope of carbon that is commonly used for dating materials that are up to 50,000 to 75,000 years old.
This is because carbon-14 has a relatively short half-life of 5,700 years, which means that after this time, only half of the original amount of carbon-14 in a sample will remain.
By measuring the amount of carbon-14 remaining in a sample and comparing it to the initial amount, scientists can determine how long it has been since the material was last alive.
In contrast, the other three isotopes mentioned have much longer half-lives and are therefore useful for dating much older materials.
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How is water important in our life?
(show in numbers the minerals that we need and is found in water)
Answers
Answer:
Water plays many important roles in the body including,flushing waste from the body,regulating body temperature,transportation of nutrients and is necessary for digestion.No wonder it is considered "essential"!.Plain water is the best choice for hydrating the body.
Explanation:
hope it helps you><
why there is presence of double or triple bond between carbon?
Answers
Answer:
Alkynes
Explanation:
Alkynes are hydrocarbons which contain carbon-carbon triple bonds. Their general formula is CnH2n-2 for molecules with one triple bond (and no rings). Alkynes undergo many of the same reactions as alkenes, but can react twice because of the presence of the two p-bonds in the triple bond.
True or False all non - metal elements are gassed at room temperature.
Answers
Answer:
false
Explanation:
you have bromine , its a non metal and liquid in room temperature
PLEASE HELP!!
ways that could control an explosion for a pyrotechnic display
Answers
Pyrotechnic displays involve controlled explosions to produce dazzling display of light and sound.
What are the ways that could control an explosion for a pyrotechnic display?Pyrotechnic displays involve controlled explosions to produce a dazzling display of light and sound. It is important to ensure that the explosions are safe and do not cause any harm to people or property. Some ways to control an explosion for pyrotechnic display:
Proper planning and design: The pyrotechnic display should be carefully planned and designed to ensure that the explosions are safe and controlled.
Use of safety equipment: Pyrotechnicians should wear appropriate safety equipment, including helmets, fire-resistant clothing, and ear protection, to protect themselves from the effects of explosions.
Monitoring and supervision: A team of trained professionals should be responsible for the set-up, operation, and monitoring of the pyrotechnic display.
Adherence to local regulations: The pyrotechnic display should comply with all local regulations and guidelines regarding the use of explosives and public safety.
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what volume would 120 grams of mercury occupy
Answers
Answer:
33
Explanation:
How many molecules are in 1.2 moles of H₂O?
Answers
Explanation:
• A compound is a substance that is made by two or more atoms from different elements.
• A mole of a compound contains a number of molecules equivalent to Avogadro's number, 6.022 × 10^23.
• That is, one mole of a compound contains 6.022 × 10^23 molecules.
In this case we are given;
Number of moles of H2O as 1.2 moles
But, 1 mole of H2O contains 6.022 × 10^23 molecules.
We are required to calculate the number of molecules present;
• To calculate the number of molecules we are going to multiply the number of molecules in one mole by the number of moles.
• Therefore;
Number of molecules = 1.2 moles × 6.022 × 10^23 molecules/mole
= 7.226 × 10^23 molecules.
Thus, 1.2 moles of water contains 7.226 × 10^23 molecules.
which element on the periodic table has the highest electronegativity
Answers
Answer:
fluorine
Explanation:
Electronegativity varies in a predictable way across the periodic table. Electronegativity increases from bottom to top in groups, and increases from left to right across periods. Thus, fluorine is the most electronegative element, while francium is one of the least electronegative
BRO THIS IS THE 3RD TIME IVE PUT THIS UP CAN SOMEONE HELP NO LINKS OR TROLLS
Answers
Answer:
1) AgNO3 (aq) + KCl (aq) -> AgCl (s) + KNO3 (aq)
Ag+ (aq) + NO3- (aq) + K+ (aq) + Cl- (aq) -> AgCl (s) + K+
(aq) + Cl- (aq)
Ag+ (aq) + Cl- (aq) -> AgCl (s)
2) 2NaCl (aq) + K2CO3 (aq) -> Na2CO3 (aq) + 2KCl (aq)
3) Fe(NO3)3 (aq) + 3NaOH (aq) -> Fe(OH)3 (s) + 3NaNO3
(aq)
Fe³+ (aq) + 3NO3- (aq) + 3Na+ (aq) + 3OH- (aq) ->
Fe(OH)3 (s) + 3Na+ (aq) + 3NO3- (aq)
Fe³+ (aq) + 3OH- (aq) -> Fe(OH)3 (s)
4) BaBr2 (aq) + Na2SO4 (aq) -> BaSO4 (s) + 2NaBr (aq)
Ba²+ (aq) + 2Br- (aq) + 2Na+ (aq) + SO4²- (aq) ->
BaSO4 (s) + 2Na+ (aq) + 2Br- (aq)
Ba²+ (aq) + SO4²- (aq) -> BaSO4 (s)
Explanation:
Sorry, I couldn't make the charges superscript. Don't know how.
On #2, no reaction occurs; everything stays aqueous.
If a car takes 5 seconds to increase its speed from 2 m/s (4.5 mph) to 18 m/s (40 mph, what is its acceleration in m/s2?
please show work
Answers
If a car takes 5 seconds to increase its speed from 2 m/s (4.5 mph) to 18 m/s (40 mph), then its acceleration in m/\({s}^2\) is 16 m/\({s}^2\), as it is found by subtracting the final velocity from the initial and dividing by the time.
What is acceleration, and what is its importance in cars?It explains how the velocity of a car changes over time and can be calculated by subtracting the final velocity from the initial and dividing by the time; the calculation is given below.
acceleration (a) = (final velocity - initial velocity) / time
a= 18 m/s - 2 m/s / 5 sec
a=16 m/\({s}^2\)
Hence, if a car takes 5 seconds to increase its speed from 2 m/s (4.5 mph) to 18 m/s (40 mph), then its acceleration in m/\({s}^2\) is 16 m/\({s}^2\), as it is found by subtracting the final velocity from the initial and dividing by the time.
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write the ka reaction for trichloroacetic acid, cl3cco2h (ka 5 0.3), for anilinium ion, and for cu21 (ka 5 3 3 1028)
Answers
Ka = [Cl3CCOO⁻] [H⁺] / [Cl3CCOOH] = 0.3
Ka = [C6H5 -NH2] [H30⁺] / [C6H5-NH3⁺] = 2.51ₓ10⁻⁵
Ka = [Cu (OH3)] ⁻[H⁺] ³/[Cu²⁺] = 3ₓ10⁻⁸
To know if a substance will act as an acid or a base in a reaction, we look at the functional group.
How to find acidic strength?
trichloroacetic acid (and carboxylic acids in general) have carboxylic group - O- H which dissociates into aqueous solution into COO⁻ + H+ ions. Since it gives protons in aqueous solution, it acts as an acid
Amines Ar -NH are bases. They react with water to produce hydroxide ions.
Protonated amine is the conjugate acid. It reacts with water to provide
Cu2+ reacts with water to provide protons. Hence, Cu2+ acts as an acid.
Among trichloroacetic acid, anilinium ion and Cu2+ ion, Ka value is maximum for trichloroacetic acid. Hence, trichloroacetic acid is the strongest acid.
Note: Higher is the Ka value, greater is the acid strength.
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Plz helpppp^^^^^^^^^^
Answers
or B but I would go with C lmk if I’m wrong
What is a covalent bond?
Answers
what is the purpose of the concentrated sulfuric acid used in the first step
Answers
The purpose of the concentrated sulfuric acid used in the first step depends on the specific process you are referring to. However, in general,
concentrated sulfuric acid is often used as a strong acidic catalyst or dehydrating agent. Its high reactivity and ability to protonate organic molecules make it useful for promoting reactions such as esterification or dehydration. In some cases. it may also be used to remove water from a reaction mixture by forming an azeotrope with water that can be easily separated.
In summar the purpose of concentrated sulfuric acid in the first step is likely to either catalyze a reaction or remove water from the system.The purpose of the concentrated sulfuric acid used in the first step is to serve as a dehydrating agent. It helps remove water from the reaction mixture, which allows the desired reaction to proceed more efficiently. In this case, the concentrated sulfuric acid assists in driving the reaction forward and ensuring a successful outcome.
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8. (07.05 LC)
Which statement is correct about the rate of most chemical reactions? (5 points)
1.It increases when the concentration of reactants decreases.
2.It does not depend on the concentration of reactants.
3.It increases when the temperature increases.
4.It does not depend on the temperature.
Answers
Answer: 3.It increases when the temperature increases.
Explanation:
The speed of most chemical reactions increase as if the temperature of those same reactions increase as well. This is because a higher temperature allows for reactants to gain the necessary activation energy needed to react.
Enzymes are another reason. Enzymes are catalysts in reactions which reduce the activation energy needed for a reaction to occur and enzymes work best in certain higher temperatures - not too high - so this also leads to the reaction speed increasing due to temperature increases.
Answer:
It increases when the temperature increases.
Explanation:
I took the test and the other guy is right ;)
a glucose molocule is the
Answers
Answer: Glucose (C6H12O6) is a hexose -- a monosaccharide containing six carbon atoms. Glucose is an aldehyde (contains a -CHO group). Five of the carbons plus an oxygen atom form a loop called a "pyranose ring", the most stable form for six-carbon aldoses.
Explanation:.