____ indicate a bal of .10 % or higher

Answer:

#2

Explanation:

Change in state, change in color, and change in odor are three signs that a chemical reaction has taken place.

A chemical reaction is a process in which the atoms or molecules of one or more substances (known as reactants) are rearranged to form one or more different substances (known as products).

During a chemical reaction, chemical bonds between atoms are broken and new bonds are formed between different atoms. It results in the creation of new chemical compounds with unique properties.

Chemical reactions can be represented by chemical equations that show the reactants and products involved in the reaction. These reactions can be exothermic (releasing energy) or endothermic (requiring energy). They play a crucial role in various natural and industrial processes.

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Answer:   Long term storage of energy

Explanation:  Triglycerides are the fats or basically lipids which are found in the blood.

They are the source of the long term storage of energy.

They are primarily used as storage of the energy because the its oxidation will produce twice as much energy than the oxidation of the carbohydrates.

Thus it is better to store the energy which we take from the food to store as triglyceride.

A, Solar energy

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Answer:

a and B I got an 100% and I'm getting a 99.7 in history k12

Explanation:

The value of ΔG' for this reaction can be determined using the equation ΔG' = -RTln(Keq), where R is the gas constant, T is the temperature in Kelvin, and Keq is the equilibrium constant. The addition of α-ketoglutarate will result in a shift in equilibrium to maintain a constant Keq. The new equilibrium concentrations can be calculated using the equilibrium constant expression and algebraic calculations.

The value of ΔG' for a reaction can be determined using the equation: ΔG' = -RTln(Keq), where R is the gas constant, T is the temperature in Kelvin, and Keq is the equilibrium constant. Since the system has settled down and no net reaction is occurring, the reaction is at equilibrium. Thus, we can use the given equilibrium constant value (Keq′ = 2.82) to calculate ΔG'.

Initially, the concentrations of glutamate and oxaloacetate are 10 mM each, and the concentration of α-ketoglutarate is 25 mM at equilibrium. When an additional 25 mM of α-ketoglutarate is added, the equilibrium will shift to the left to maintain equilibrium. This means that the concentration of α-ketoglutarate will decrease while the concentrations of glutamate and oxaloacetate increase. However, the equilibrium constant Keq remains the same.

To calculate the new equilibrium concentrations, we can use the equation: Keq = ([α-ketoglutarate][aspartate])/([glutamate][oxaloacetate]). We'll let x represent the change in concentration of α-ketoglutarate. The new concentrations will be: [α-ketoglutarate] = (25 - x) mM, [aspartate] = x mM, [glutamate] = 10 + x mM, [oxaloacetate] = 10 + x mM.

Now, we can substitute these concentrations into the equilibrium constant expression: 2.82 = ((25 - x)x)/((10 + x)(10 + x)).

Using algebra, we can solve for x, which represents the change in α-ketoglutarate concentration. Once we determine the value of x, we can substitute it back into the concentrations to find the new equilibrium concentrations. Finally, we can plug these new equilibrium concentrations back into the equation ΔG' = -RTln(Keq) to calculate the value of ΔG'.

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After the addition of α-ketoglutarate, the Gibbs free energy change (ΔG') for the reaction is calculated to be approximately 1.417 kJ/mol.

To answer this question, we need to calculate the Gibbs free energy change (ΔG') after the addition of α-ketoglutarate using the reaction's equilibrium constant and the concentrations at equilibrium.

      Q = [α-ketoglutarate] [aspartate] / [glutamate][oxaloacetate]

Given α-ketoglutarate = 50 mM, glutamate = 10 mM, oxaloacetate = 10 mM, and assuming aspartate = 10 mM at equilibrium:

     Q = (50 mM) (10 mM) / (10 mM) (10 mM) = 5

Next, use ΔG' = ΔG°' + RT ln(Q/Keq'):

Given ΔG°' = 0 (since Keq' reflects equilibrium conditions) and RT as the product of gas constant (approximately 2.478 kJ/mol at 298 K):

ΔG' = RT ln (5 / 2.82) = 2.478 kJ/mol x ln (1.773) = 2.478 kJ/mol x 0.572 = 1.417 kJ/mol

Thus, the value of ΔG' after the addition of α-ketoglutarate is approximately 1.417 kJ/mol.

Answer:

In commensalism one of the organisms benefits while the other receives no benefit but is unharmed. In mutualism, both organisms benefit.

Explanation:

The exact answer on Edg

Final answer:

A methane (CH4) molecule is nonpolar due to its symmetrical tetrahedral structure and equal sharing of electrons in non-polar covalent bonds, resulting in a balanced distribution of charge.

Explanation:

The molecule of methane, CH4, is nonpolar because its molecular structure is tetrahedral, with each of the four hydrogen atoms symmetrically arranged around the central carbon atom. This symmetrical arrangement allows the electrons to be shared equally among the C-H bonds, resulting in a molecule with no net dipole moment.  The carbon and hydrogen atoms also have similar electronegativities, leading to non-polar covalent bonds. Thus, overall, the distribution of charge throughout the molecule is even, making methane nonpolar.

Furthermore, the tetrahedral geometry of methane ensures spatial symmetry, preventing any concentration of charge in a particular direction. This molecular symmetry, combined with the homogeneity of carbon-hydrogen bonds, results in a nonpolar molecule, underscoring the significance of both structural and electronegativity factors in determining the overall polarity of compounds. This molecular characteristic is vital in understanding methane's behavior in various chemical and physical interactions.

Answer:The correct answer is option B.

Explanation:

Transverse waves are the waves with oscillation vibrating perpendicular the propagation of the wave.

Whereas, Surface wave is the wave which travels across the surface of the earth.

Longitudinal wave is the wave in which medium vibrates in the same direction of the propagation of the wave.

Answer:

The freezing of groundwater and rivers makes water unavailable to plants. To survive the winter where there is little water and little sunlight, many plants become dormant. During dormancy, the plant stops growing. This allows the plant to conserve energy and survive the winter conditions.

Explanation:

The answer is D. all of these

The acceleration of your bicycle can vary depending on the situation. If you are riding at a constant speed, your acceleration would be zero. However, if you are starting from rest or changing your speed, you would have a non-zero acceleration.

The acceleration of your bicycle as you ride it from your home to the store can vary depending on the situation. If you are riding at a constant speed, your acceleration would be zero because acceleration is the rate of change of velocity, and constant speed means there is no change in velocity. However, if you are starting from rest and gradually speeding up or slowing down, then you would have a non-zero acceleration.

For example, if you start from rest at your home and gradually increase your speed as you ride to the store, your acceleration would be positive. On the other hand, if you start at a high speed and gradually slow down as you approach the store, your acceleration would be negative.

It's important to note that acceleration is a vector quantity, meaning it has both magnitude and direction. So, depending on the direction of your motion, the acceleration could be positive or negative.

To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. The correct option is option B.

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.

In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron. In the given compound, Calcium = 1 atom, Sulfur = 1 atom, Oxygen = 4 atoms.

Therefore, the correct option is option B among all options.

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Answer:

its A

Explanation:

The required mass of aluminum in 500g of [tex]Al(C_2H_3O_2)_3[/tex] is approximately 66.15 g.

To calculate the mass of aluminum in 500 g of [tex]Al(C_2H_3O_2)_3[/tex] (aluminum acetate), we need to follow these steps:

1. Molar Mass Calculation: Determine the molar mass of [tex]Al(C_2H_3O_2)_3[/tex] simply summing the atomic masses of each atom that makes up the molecule. The formula for aluminum acetate is [tex]Al(C_2H_3O_2)_3[/tex], which consists of 1 aluminum (Al), 6 carbon (C), 9 hydrogen (H), and 6 oxygen (O) atoms.

2. Atomic Masses from Periodic Table: Al = 26.98 g/mol, C = 12.01 g/mol, H = 1.01 g/mol, O = 16.00 g/mol

3. Molar Mass of [tex]Al(C_2H_3O_2)_3[/tex]:

Total molar mass = 204.13 g/mol

4. Determine Moles of [tex]Al(C_2H_3O_2)_3[/tex]:

5. Calculate Mass of Aluminum: Using the molar mass of aluminum (27.0 g/mol) and the calculated moles of [tex]Al(C_2H_3O_2)_3[/tex]:

Each mole of [tex]Al(C_2H_3O_2)_3[/tex] contains 1 mole of Al

Mass of Al = [tex]2.45\left mol \times 27.0\left g/mol = 66.15\left g[/tex]

The mass of aluminum in 500 g of [tex]Al(C_2H_3O_2)_3[/tex] is approximately 66.15 g.

Answer:

It's supergiant.

Explanation:

I took the test.

A row of cypress trees lined the bank uses the word bank in the same context as the example sentence. Therefore, the correct option is option A.

Context in writing is information that aids readers in correctly interpreting a text's meaning. Context can take many different forms, such as background information or specifics of the events, setting, or period of time in which a work is set. Context is characterised by its ability to make a written work's meaning more clear.

The circumstances whereby a specific piece of writing is produced are referred to as the rhetorical context. It takes into account things like the author's background, the situation or purpose for the writing, as well as the intended readership. A literary work is made richer by context, which also aids in drawing readers fully into the narrative. For both writers and readers, context is crucial. A row of cypress trees lined the bank uses the word bank in the same context as the example sentence.

Therefore, the correct option is option A.

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According to the question the correct answer is: A. a row of cypress trees lined the bank.

The sentence that uses "bank" in the same context as the example is: 'a row of cypress trees lined the bank'. Here, 'bank' refers to the land beside a river or body of water.

In this context, the word "bank" refers to the land alongside a river or body of water, similar to the example sentence where the boat was moored on the bank (the edge of a river).

The equation P4 + SO2 → 2P4O10 does not demonstrate the law of conservation of mass.

In equation P4 + SO2 → 2P4O10, the mass of the reactants are not equal to the mass of the products. Therefore, this equation does not obey the law of conservation of mass.

Hence, we can conclude that option C is the answer.

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Over-fishing is a threat to biodiversity resulting from human impact, specifically through unsustainable resource exploitation. Thus option C) 'Human Impact' is correct.

The correct answer to the question is Human Impact.

While global climate change and habitat loss are significant threats to biodiversity, they are typically not the direct result of over-fishing. Instead, over-fishing directly exemplifies how human impact on the environment can lead to unsustainable resource use and endanger species.

Complete question: Which of the following threats to biodiversity is a result of over-fishing?

A)Global Climate Change

B)Habitat Loss

C)Human Impact

D)Invasive Species

Correct option: C) Human impact

Answer:

The answer is they reproduce with only one another.

Explanation:

In biology, species is a term that can be defined as a group of organisms that can reproduce with one another and give birth to fertile offspring. In other words, the organisms in one species cannot reproduce with organisms in another species. So, to be considered as part of the species, this criteria is very important.