what colour would the methyl orange indicator be in the hydrochloric acid?

Answer:

We need the picture to answer the question

Explanation:

but i did do this test and number 4 was biotic and number 5 was abotic hope this helped

Answer:

it intends to increase to be the same across a period

Explanation:

cooked rice

nutrient

carbohydrate.

Boiler eggs

nutrient

Protein.

Answer:

For all atoms with no charge, the number of electrons is equal to the number of protons. The mass number, 40, is the sum of the protons and the neutrons. To find the number of neutrons, subtract the number of protons from the mass number.

Explanation:

Answer:

Letter C. Subtract the atomic number from the atomic mass

Answer:

Glycolysis

Explanation :

Glycolysis is the first step in the breakdown of glucose to extract energy for cell metabolism.Many living organisms carry out glycolysis as part of their metabolism. Glycolysis takes place in the cytoplasm of most prokaryotic and all eukaryotic cells.

Answer:

Glycolysis is the first step in the breakdown of glucose to extract energy for cell metabolism. Many living organisms carry out glycolysis as part of their metabolism. Glycolysis takes place in the cytoplasm of most prokaryotic and all eukaryotic cells.

Oxygen is involved in the initial breakdown of glucose to pyruvic acid. Cellular respiration accomplishes two major processes: (1) it breaks glucose down into smaller molecules, and (2) it harvests the chemical energy released and stores it in ATP molecules.

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Answer:

c- 6.02x1023 molecules

Explanation:

one gram atomic weight of silicon with atomic weight of 28 grams, one mole of silicon still contains 6.022 × 1023 silicon atoms.

Answer:

MgO.

Explanation:

charges of both satisfy one another (balanced) -- producing a compound MgO.

Answer:

You should get the catalyst back already.

Explanation:

A catalyst shouldn't be used up during a chemical reaction. It is used to speed up a reaction, but it shouldn't disappear/be used up by a chemical reaction.

Answer:

answer is b

Explanation:

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The heat absorbed by a system during a constant pressure process, as described by the equation H = E + PV, is called enthalpy.

During a constant pressure process, the heat absorbed by the system is equal to the change in enthalpy. Enthalpy is a thermodynamic property that represents the total heat content of a system. Enthalpy is given by the equation H = E + PV, where E is the internal energy of the system, P is the pressure, and V is the volume. The enthalpy change during a process is a measure of the heat energy transferred to or from the system. Enthalpy is widely used in chemical thermodynamics to study chemical reactions and their energetics, and is an important concept in many areas of science and engineering.

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It means that the air near the Earth's surface is denser compared to the other parts.

99.9% of the air particles are found in the lower part of the atmosphere because the air in this region is denser than the other regions.

Air density increases with increased pressure and as we move up in altitude, air pressure decreases.

Thus, as air pressure decreases with height, the density of air also decreases. This is why most of the air particles are found in the lower part of the atmosphere.

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Answer:

I think Methane.

In the solar cooker, reflective material like aluminum is used to collect and trap the heat from the sunlight while the interior is painted to reduce heat loss.

A solar cooker is a cooker which uses the energy of sunlight to cook food.

In designing a solar cooker, a solar collector such as reflective material like aluminum is used to collect and trap the heat from the sunlight.

The interior of the cooker is painted black to avoid heat loss by radiation.

Cardboard boxes are used as insulating materials.

In conclusion, a solar cooker is designed to maximize solar energy collected and minimize heat loss.

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Answer: Negatively

Explanation:

Answer:

Negative charges

Explanation:

like magnets attract only their opposite poles, the charges behave in the same way.

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A Keq value of 29 suggests that the products are strongly favored over the reactants at equilibrium, and the ratio of the concentration of products to the concentration of reactants is 29:1.

The equilibrium constant, Keq, for a chemical reaction is a measure of the relative concentrations of products and reactants at equilibrium. If the value of Keq for a reaction is greater than 1, it indicates that the products are favored at equilibrium, and if Keq is less than 1, it indicates that the reactants are favored. In the case of a Keq of 29, it suggests that the products are significantly favored over the reactants at equilibrium.

More specifically, the Keq value indicates the ratio of the concentration of products to the concentration of reactants at equilibrium. A Keq of 29 indicates that the concentration of products is 29 times greater than the concentration of reactants at equilibrium. This suggests that the reaction strongly favors the formation of products, and the equilibrium is shifted towards the products side.

It is important to note that the value of Keq is temperature-dependent and can change with changes in temperature. A decrease in temperature can cause the equilibrium to shift towards the reactants, while an increase in temperature can shift it towards the products. However, at any given temperature, a Keq value greater than 1 indicates that the reaction is proceeding towards the products side, and a Keq value less than 1 indicates that it is proceeding towards the reactants side.

In summary, a Keq value of 29 suggests that the products are strongly favored over the reactants at equilibrium, and the ratio of the concentration of products to the concentration of reactants is 29:1.

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Answer:

eyes hair skin

Explanation:

eyes you can get from parents skin and hair

Answer:

-54 kJ/mol

Explanation:

Given that:

A student mixed 50 ml of 1.0 M HCl and 50 ml of 1.0 M NaOH in a coffee cup calorimeter and calculated the molar enthalpy change of the acid-base neutralization reaction to be –54 kJ/mol

i.e

50 ml of 1.0 M HCl +  50 ml of 1.0 M NaOH -----> -54 kJ/mol

If he repeat the same experiment with :

100 ml of 1.0 M HCl + 100 ml of 1.0 M NaOH. ------> ????

From The experiment; the molar enthalpy of change of the acid-base neutralization reaction will be -54 kJ/mol

This is because : The second reaction requires 50 ml in order to neutralize the reaction, then the remaining 50 ml will be excess, Hence, there is no change in the enthalpy of the reaction.

Similarly; we can assume that :

In the first reaction;  P moles of  is used to liberate Q kJ heat ; then  the change in molar enthalpy will be Q/P (kJ/mol).

SO; when he used 100 ml ;

then the amount of moles used is double, likewise the heat liberated will be doubled ;

So;

2P moles is used to liberate 2Q kJ heat ;

2P/2Q = Q/P ( kJ/mol) = -54 kJ/mol

Answer:

volume = mass/ densidad

0.88g/cm3 = 880kg/m3

v=20kg/880kg/m3

v=0.02272727272

o puede ser 0.0227

o tambien puede ser 0.023

The oscillation of the oxygen atom occurs with frequency fo = 3.7 × 10¹³ Hz when oxygen atom replace to sulfur the frequency of sulfur is 2.7 × 10¹³ Hz.

The frequency expression is given as :

F = ( 1/ 2π ) × √(k/m)

or F² m =  k / 4π²

now. if oxygen atom is replaced by the sulfur atom:

(F² m) oxygen = ( F² m) sulfur

F sulfur = F oxygen × √ (m oxygen / m sulfur)

F sulfur = 3.7 × 10¹³  × √ 16 / 32

F sulfur = 2.7 × 10¹³ Hz.

Thus, An oxygen atom at a particular site within a DNA molecule can be made to execute simple harmonic motion when illuminated by infrared light. the oxygen atom is bound with a spring-like chemical bond to a phosphorus atom, which is rigidly attached to the DNA backbone. the oscillation of the oxygen atom occurs with frequency fo = 3.7 × 10¹³ Hz when oxygen atom replace to  sulfur atom the frequency of sulfur is 2.7 × 10¹³ Hz.

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a)(i) Derive the mathematical expression for calculating the equilibrium constant (K) for a redox reaction at 25°CRedox reactions occur when electrons are transferred from one atom to another in the reactants.

The Nernst equation is used to calculate the potential of a redox reaction under non-standard conditions. The Nernst equation is:Ecell = E°cell - (RT/nF)ln Q where E°cell is the standard cell potential, R is the gas constant, T is the temperature in kelvins, n is the number of electrons transferred in the redox reaction, F is Faraday's constant, and Q is the reaction quotient.

To calculate the average current per spoon that must flow during the electroplating process, we use Faraday's laws of electrolysis :F = q/n F where F is the Faraday constant, q is the charge, n is the number of electrons transferred, and F is the Faraday constant. We know that the mass of silver deposited is 2.00 g and the molar mass of silver is 107.868 g/mol .

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Answer:

Protons and neutrons can be further broken down: they're both made up of things called “quarks.” As far as we can tell, quarks can't be broken down into smaller components, making them the smallest things we know of.

Explanation:

Answer:

no, there was not a chemical reaction

Based on the average properties found in the appendix, the modulus of elasticity of steel (Esteel) is generally greater than that of plastics (Eplastics).

According to the average properties found in the appendix, the modulus of elasticity (E) of steel is generally greater than that of plastics.

The modulus of elasticity, also known as Young's modulus, measures the stiffness or rigidity of a material. It quantifies how much a material deforms under an applied load.

Steel is known for its high strength and stiffness, and it typically has a higher modulus of elasticity compared to plastics.

On the other hand, plastics have a wide range of modulus of elasticity values depending on their composition and structure.

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Answer: If you're looking for the type of bond, you need to find the difference in electromagnetically. The electromagnetically of Br is 2.96 and Si is 1.9. Subtracting the two will give you the difference of the previously mentioned (1.06).

For the bond to be POLAR the difference should fall between 0.5 and 1.6

For the bond to be NON-POLAR the difference should be 1.6

Answer:

a) A subtance that increase H3O+ concentration when it is dissolved in water.

Explanation:

Arrhenius acid: any species that increases the concentration of H+ ions (or protons) in an aqueous solution.

Arrhenius base: any species that increses the concentration of OH- in an aqueous solution.

Brønsted-Lowry acid:  any species that donates protons.  

Brønsted-Lowry base: any species that is accepts protons.

Answer:

As organisms release energy during cellular respiration, carbon dioxide is produced from the carbon in energy storage molecules. ... Carbon dioxide in the biodome decreased because decomposers decreased which means there was a decrease in cellular respiration overall.

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Answer:

A group of cells working together is defined as a tissue and several tissues working together comprise an organ.

Explanation: