Set up the Gizmo to observe freezing. What do you notice about the temperature while the water is in the process of freezing?

Answer:

Jupiter and Saturn are the two biggest planets

Answer:

Oil

Explanation:

Answer:

A

An organism’s phenotype may influence its ability to find food, and also might affect the organism’s ability to reproduce and pass on favorable alleles.

B.

An organism’s phenotype may influence its ability to produce chromosomes and pass those chromosomes to future generations

C.

An organism’s phenotype may influence its ability to turn on certiain genes necessary for survival.

D.

An organism’s phenotype is not connected with the chances for a species to survive.

Explanation:

Answer:

Percy Lavon Julian

Explanation:

In 1949, American research scientist Percy Lavon Julian revealed the synthesis of Compound S from the cheap and widely accessible pregnenolone, as part of his hunt for new ways to make cortisone (synthesized from the soybean oil sterol stigmasterol).

Answer:

a. 4.46 moles de CO₂

b. 80.2 g de H₂O

38.25 moles de H₂

5.55 L de dióxido de carbono

Explanation:

Comenzamos con la reacción: CO₂ (g) + 2 KOH (l) → K₂CO₃ ↓ (s) + H₂O (l)

a. Podemos ver que la relación estequiométrica es 2 a 1.

Pasamos la masa de KOH a moles → 500 g . 1mol/ 56.1g = 8.91 moles

2 moles de KOH necesitan 1 mol de dióxido

Entonces, 8.91 moles necesitarán (8.91 . 1)/2 = 4.46 moles

Convertimos los moles en masa → 4.46 mol . 44g /1mol = 196 g de CO₂

b. Como no tenemos información de los reactivos, trabajamos con el KOH (recorda que siempre hacemos los cálculos con el reactivo limitante).

La relacion estequiometrica también es 2 a 1.

Con 2 moles de KOH producimos 1 mol de agua

Entonces 8.91 moles producirán la mitad, 4.46 moles

Pasamos a gramos  → 4.46 mol . 18g /1mol = 80.2 g de H₂O

N₂ + 3H₂ → 2NH₃

En esta relacion, la relación de moles es 1 a 3.

1 mol de N₂ necesita 3 moles de H₂ para llevar a cabo la reacción

12.75 moles de nitrogeno reaccionarán con (12.75 . 3)/ 1 = 38.25 moles de H₂

La siguiente es una reacción de combustión:

C₃H₈ + 5O₂ → 3 CO₂ + 4 H₂O

Como en este caso tenemos volumen, necesitamos averiguar la densidad del propano para sacar la masa y de ahi los moles:

Densidad del propano es 1.83 g/L

Si tenemos 2 Litros de gas, entonces tendremos el doble de masa

2L .  1.83 g/L = 3.66 g

Convertimos a moles → 3.66 g . 1 mol/44g = 0.083 moles

1 mol de propano produce 3 moles de dióxido.

0.083 moles producirán (0.083 .3) /1 = 0.249 moles

Convertimos a gramos → 0.249 moles . 44g/ 1mol = 10.98 g

La densidad del CO₂ es 1.976 g/L

d = m/V → V = m/d →  10.98 g / 1.976 L = 5.55 L

Hello. You have not presented the image that presents the two elements mentioned in the question. This makes it impossible for your question to be answered. However, I will try to help you as best I can.

To say whether the compounds obey the law of multiple proportions, you should observe whether one of the elements, formed from the compounds, maintains a fixed mass, while the other element presents the mass in a varied amount of small, whole numbers, spread across the formed compounds .

This is because the law of multiple proportions states that an element must have a fixed mass when reacting with another element to create compounds. This reaction will allow this element to keep the mass fixed, while the other element will generate different compounds, where each one presents a part of the mass of the forming element, in small and whole numbers.

Answer:

D-block

Explanation:

Transition metals are metals of the d-block elements located between group 2 and 3 in the periodic table. They are called d-block element because the filling of electrons in their electronic configuration ends in the d-orbital.

Now, they have variable oxidation state because of their partially filled 3d orbital i.e the 3d orbital is not completely filled.

MgCl2 product in the reaction forms a precipitate because it is solid an insoluble salt and not dissolve in solution and precipitate on the bottom surface of the solution.

The chemical reaction in which two ionic bond combine to form an insoluble salt in a aqueous solution is called precipitation reaction.

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In order to ensure that 900 mL of 1/3 strength solution is delivered over 8 hours via a nasogastric tube, you must add 300 mL of water to the 1/3 strength solution.

This will give a total volume of 1.2 L, which when divided by 8 hours, equals 150 mL per hour.

Use the formula for calculating dilution, which is: Final Volume / Concentration = Amount of Solvent to be Added.

We are given the Final Volume, which is 900 mL, and the Concentration, which is 1/3 strength. We can calculate the Amount of Solvent (in this case, water) to be Added :

900 mL / (1/3) = 2700 mL

The amount of water needed to be added to the 1/3 strength solution to achieve 900 mL of 1/3 strength is 2700 mL.

However, since the total volume of the solution must not exceed 1.2 L, only 300 mL of water must be added to the 1/3 strength solution,

giving us a total volume of 1.2 L when the 900 mL of 1/3 strength is taken into consideration.

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Brass is an alloy of copper and zinc and is durable, malleable and sonorous.

Alloys are products which are obtained from a mixture of two or more metallic elements.

Alloys are preferred to the individual elements because they combine the desirable properties of their component elements.

An example of an alloy is brass.

Brass is mixture of copper and zinc. It combines the shiny and anti-rust properties of zinc with the durability and sonorous property of copper.

It very sonorous and malleable and is used in many musical instruments.

In conclusion, alloys are produced by mixing two or more metals together.

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Since the notebook and cubes are balanced at the same level on the scale, the mass of the notebook and sugar cubes are equal.

The correct option is C.

The amount of matter that makes up every object or body is the greatest way to understand mass. Everything that we can see has mass. Examples of objects with mass include a table, a chair, your bed, a football, a glass, and even air.

Masses are measured using scales.

The most typical way to measure it is as inertial mass, which refers to an object's resistance to acceleration under the influence of a net force.

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Complete question:

Ashley placed a notebook and sugar cubes on a scale.

The notebook and cubes are balanced at the same level on the scale.

Which of these describes the mass of the notebook and sugar cubes?

a. The mass of the notebook is greater than the mass of the sugar cubes

b. The mass of the notebook is less than the mass of the sugar cubes

c. The mass of the notebook is equal to the mass of the sugar cubes

An atom of aluminum has three valence electrons.

The valence electrons are the electrons in the outermost energy level of an atom, also known as the valence shell.

Aluminum is located in Group 13 of the periodic table, which means it has three valence electrons. The atomic number of aluminum is 13, indicating that it has 13 electrons in total.

The electronic configuration of aluminum is 1s² 2s² 2p⁶ 3s² 3p¹. In this configuration, the outermost energy level is the third energy level (n=3), and the s and p sublevels are involved in valence electron formation. There is one electron in the 3p orbital, making aluminum have three valence electrons.

These valence electrons are involved in chemical bonding and determine the reactivity and chemical behavior of aluminum.

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Sodium is an example of an alkali metal that reacts with water to form hydrogen gas and an alkaline solution.

Alkaline metals are lithium, sodium (Na), rubidium, potassium, cesium. They have low ionization energy and lose one electron very easy.

Atomic number of sodium is 11, it means that it has 11 protons and 11 electrons, so atom of sodium is neutral.

Electron configuration of the sodium atom: ₁₁Na 1s² 2s² 2p⁶ 3s¹.

Balanced chemical equation for the reaction of sodium with water:

2Na + 2H₂O → 2NaOH + H₂

NaOH is strong alkaline base.

H₂ is the hydrogen gas

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The alkyl group (R) attached to the chiral α-carbon of  L-threonine amino acid is H₃C-CH-OH. The Fischer projection of L-threonine is attached below.

Amino acids can be defined as organic compounds that contain both amino and carboxylic acid functional groups. Most amino acids are α-amino acids, which comprise proteins.

Amino acids are divided according to the positions of the functional groups, such as alpha- (α-), beta- (β-), gamma- (γ-), or delta- (δ-) amino acids. As proteins, amino acids form 2nd largest component of human muscles and tissues.

In the structure of amino acids, R denotes a side chain attached to each amino acid. The carbon atom attached to the carboxyl group (-COO) is called the α–carbon. Amino acids with an amino group (-NH₂) attached directly to the alpha-carbon is known as α-amino acids.

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Answer:

B. Fission

Explanation:

On edge

Answer:

g/cm3

Explanation:

(grams, centimeters)

The main function of using a virtual spectrometer in order to analyze astronomical bodies in space is to find the chemical composition of planets and stars.

This refers to the instrument that is used to observe the color separation of light in a controlled experiment.

Hence, we can see that another reason for the use of a virtual spectrometer to make an analysis of astronomical bodies is to indicate the speed and direction of a star or galaxy as it spreads incoming beams of light into different spectrums.

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Answer:

Answer is: mass.

Explanation:

hope this helps!

Answer:

gidgjfxdgjxhfkzyjyfxgjfxj

Explanation:

There are approximately 0.1 grams in 6.02 x 10^23 AMU.

In 6.02 x 10^23 atomic mass units (AMU), you can follow these steps:

1. Understand that 1 AMU is defined as 1/12th the mass of a carbon-12 atom, which is approximately 1.66053906660 x 10^-24 grams.
2. Multiply the given number of AMUs (6.02 x 10^23) by the mass of 1 AMU in grams (1.66053906660 x 10^-24 g):
  (6.02 x 10^23 AMU) * (1.66053906660 x 10^-24 g/AMU)

3. Perform the multiplication to obtain the mass in grams:
  1 x 10^-1 grams

So, there are approximately 0.1 grams in 6.02 x 10^23 AMU.

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Answer:

Gain energy as a liquid changes to a gas

Explanation:

get further apart= more kinetic energy

liquid at beginning as not uniform but quite close together and takes shape of container

The answer is...Liquid into gas.

My Explanation:

Stated in the model, The atoms aren't that active but can still slider past each other; meaning, this is a liquid. As it shifts into a gas, which is when atoms pick up energy and move around more freely/actively, the definition of the following is "Vaporization".

So the answer is: B, or in other words, "Atoms gain energy as a liquid turns into a gas.

Chlorine may be added to water in a continuous, c.) Low dose method to initially disinfect a pipeline.

Chlorine can be added in a continuous low dose to maintain disinfection in the pipeline. This method is often used to prevent the growth of bacteria and other microorganisms in the water. Alternatively, a slug method may be used for an initial shock treatment, where a higher concentration of chlorine is added to the pipeline. Tablet or air injection methods may also be used for disinfection, but they are less commonly employed than the continuous or slug methods. Regardless of the method used, it is important to ensure that the chlorine is properly mixed and that the water is adequately monitored to ensure safe levels of chlorine and other content loaded in the water.

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When 5.0 mL of 4.00×10⁻³ M AgNO₃ is added to 5.0 mL of 2.80×10⁻³ M K₂CrO₄, there is a stoichiometric excess of Ag⁺ ions.

The reaction between AgNO₃ and K₂CrO₄ produces Ag₂CrO₄, and the balanced equation is:

2 AgNO₃ + K₂CrO₄ → Ag₂CrO₄ + 2 KNO₃

From the balanced equation, we can see that the mole ratio of AgNO₃ to K₂CrO₄ is 2:1. Now let's calculate the moles of each reactant:

Moles of AgNO₃ = (5.0 mL) × (4.00×10⁻³ mol/L) = 2.00×10⁻² mol
Moles of K₂CrO₄ = (5.0 mL) × (2.80×10⁻³ mol/L) = 1.40×10⁻² mol

Now, divide the moles of each reactant by their stoichiometric coefficients:

AgNO₃: (2.00×10⁻² mol) / 2 = 1.00×10⁻² mol
K₂CrO₄: (1.40×10⁻² mol) / 1 = 1.40×10⁻² mol

Since the value for AgNO₃ (1.00×10⁻² mol) is less than the value for K₂CrO₄ (1.40×10⁻² mol), AgNO₃ is the limiting reactant and K₂CrO₄ is in stoichiometric excess. Therefore, Ag⁺ ions are in stoichiometric excess.

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Explanation:

37x - 1 + 23x + 1 = 180 ° { being co-interior angles }

60x = 180°

x = 180°/ 60

x = 3 °

Now

< T = 37x - 1° = 37 * 3° - 1 = 110°

Hope it will help :)

The aspects of thermodynamics the enzyme can not change are alter the overall energy balance of a chemical reaction and overall direction of a reaction

Firstly, enzymes cannot alter the overall energy balance of a chemical reaction, the first law of thermodynamics states that energy cannot be created or destroyed, only converted from one form to another. Enzymes can speed up reactions by lowering the activation energy, but they cannot change the total energy input or output.

Secondly, enzymes cannot change the overall direction of a reaction, as dictated by the second law of thermodynamics, this law states that natural processes tend to increase the entropy (disorder) of the system. If a reaction is not thermodynamically favorable (i.e., it would result in a decrease in entropy), enzymes cannot make it occur spontaneously. They can only increase the reaction rate if the reaction is already favorable. In summary, enzymes can speed up the reaction rate and lower activation energy, but they cannot change the total energy balance or the overall direction of a reaction, as these are determined by the laws of thermodynamics.

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a) The graph shows that the substance takes longer to boil than to melt. One reason for this is that boiling requires more energy than melting.

b) The heating curve of pure water shows the changes in temperature as water is heated. When water is initially heated, it absorbs heat energy, causing its temperature to rise until it reaches its boiling point.

a. When a substance melts, its particles absorb energy, causing the bonds between them to weaken and eventually break, causing the substance to transition from a solid to a liquid state. However, during boiling, not only must the particles absorb energy to break their bonds, but they must also overcome the pressure of the surrounding atmosphere, which keeps them in their liquid state. This means that boiling requires more energy than melting, which is why it takes longer for a substance to boil than to melt.

b. As water continues to be heated, it undergoes a phase transition from a liquid to a gas, with its temperature remaining constant during this process. Once all of the water has boiled off, the temperature begins to rise again as the energy is absorbed by the container or the surrounding environment.In a heating curve of pure water, the x-axis represents temperature, while the y-axis represents heat energy. The curve starts at the initial temperature of the water, then rises until it reaches the boiling point. At the boiling point, the curve remains horizontal until all of the water has boiled off. After this, the curve rises again, showing the energy absorbed by the container or environment. The curve will be similar to an inverted U-shape, with a flat portion in the middle.

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The majority of valleys are created by rivers or streams eroding the land's surface over a very lengthy period of time. Some valleys are created by glacial ice erosion.

Through erosion, or the removal of rock and sediment, glaciers can sculpt the terrain. Two alternative techniques can be used to erode bedrock: Abrasion: A glacier's bottom ice is not always pure; it frequently contains particles of rock, dirt, and debris. It is gritty, like to sandpaper.

Glaciers can alter the contour of the land when they spread out (grow) across its surface. They erode rock and sediment from the surface of the land, transport it from one location to another, and leave it in another. Thus, glaciers are responsible for both erosive and accumulative landforms.

Rock shards embedded in the ice abrade the underlying rocks, which is the main cause of glacial erosion.

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Answer:

The squirrels, rabbits, and grasshoppers would be directly affected by the loss of berries.

Explanation:

Refer to the attached picture below.

The arrows in the diagram represent which way the energy flows. There are only three ways the energy flows directly to an organism. Those are to the grasshopper, the frog, and the rabbit. (in the picture below, these are circled in red.)

Therefore, we can assume that the correct answer would be D. The squirrels, rabbits, and grasshoppers would be directly affected by the loss of berries.

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