Which statement about the specific heat capacity of aluminum is correct?

Answer:

C. hydration number

Explanation:

When we dissolve an ionic compound (a charged species) the charges can interact with the water molecule. In the case of cations (positive charges) the negative dipole of water (generated in the oxygen) will interact with the positive charge at the same time the anions (negative charges) the positive dipole of water (generated in the hydrogen).

The amount of water molecules that can interact with a single ion (cation or anion) is called hydration number. In the example, we have a hydration number of "4" for the sodium cation.

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The volume of nitrogen dissolved in blood plasma is 0.4 L.

The maximum volume of nitrogen that can dissolve in the diver's blood plasma is obtained as follows:

Number of moles of nitrogen dissolved at a depth of 93.0 m = Henry's constant * pressure at 93.0 m * volume of plasma

Number of moles of nitrogen =  5.80 × 10⁻⁴ * 10 * (4.95 * 55%)

Number of moles of nitrogen = 0.0158 moles

Hence,;

n = 0.0158 moles

R = 0.08206 L.atm/mol/K

T = 37 + 273 = 310 K

P = 1 atm

V = 0.0158 * 0.08206 * 310/1

V = 0.4 L

In conclusion, the volume of nitrogen dissolved in blood plasma is determined using the number of moles of dissolved nitrogen.

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the answer is atomic numbers

Answer:

atomic numbers

Explanation:

In order for two atoms to be different, they have to have a different number of protons. Protons are represented by the atomic number. Thus, atoms of two DIFFERENT elements must have different atomic numbers.

I took the test and got 100%

Hope this helps!

Answer:

In biology class we had to look at the parts of a plant in a microscope

Answer:

The answer is below

Explanation:

Because various factors can affect the actual value of the titration outcome. Some of these factors can range from errors from a researcher also known as human error, misreading the quantities, researcher's perception of the color, or wrong procedure in carrying out the experimentation.

Hence, in order to avoid such error, a researcher needs to be thorough during the process of experimentation, and using gross reading can help to avoid these errors when the titre value is eventually determined.

Answer: (the answer is highlighted at the end of the explanation)

Explanation:

The question requires us to choose all correct statements regarding gas mixtures.

We can analyze the statements about gas mixtures from the point of view of Dalton's Law of partial pressure, which describes how gases behave when in a mixture.

According to Dalton's Law, the partial pressure of a gas in a mixture corresponds to the pressure of an individual gas in the mixture. Also, this Law states that the sum of the partial pressure of components in a gas mixture results in the total pressure of this mixture.

Still, based on the individual partial pressures given by the Dalton's Law, we can say that each gas in a mixture of non-reacting gases behaves independently of the mixture and each of them can be treated separated, although their pressure contributes to the total pressure of the mixture.

Considering the information above, we can mark the following statements as true:

- "Gas mixtures behave the same way as individual gases do"

- "individual gases behave independently of the mixture"

- "to the pressure of a gas mixture, you should add together all the partial pressures of the individual gases in the mixture"

Answer:

A a mountain

Explanation:

this is becuase the two plates are pushing into each other, so all that rock will go where theres the least resistance, up

you can see this when you place your hands (palms down facing each other where the tis touch) on a table or flat surface, if you slowly bring them together ((DONT DO IT HARD OR FAST else u may hurt urself)) your fingertips will begin to want to rise up

the answer is not B becuase:

a canyon is formed when erosion carves into the earth, this oes NOT need to happen at a fault line and deffinitally does not happen n converging plates as shown

the answer is not D becuase:

a ridge is formed when ne plate pushes under the other, pushing that second plate upward, when this happens it forms a chain of mountains, though this is simmilar to the correct answer, the diagram does not show the plates undernieth one another, rather they are pushing against each other

the answer is not C becuase:

a fault is where two plates are moving away from each other, creating a canyon like structure, this is not a canyon however, for it is not formed by erosion, most faults can be found underwater since oceans usually fill in the gap where rock used to be

hope this helps you, sorry if its a lot of reading ^^"

a. To determine the theoretical yield of Cu(OH)2, we need to first calculate the limiting reactant. The balanced chemical equation shows that 2 moles of NaOH reacts with 1 mole of Cu(NO3)2 to produce 1 mole of Cu(OH)2. We can use this information to calculate the number of moles of NaOH:

20.50 g NaOH x (1 mole NaOH / 40.00 g NaOH) = 0.5125 moles NaOH

Using the stoichiometry of the balanced equation, we can see that this amount of NaOH will react with:

0.5125 moles NaOH x (1 mole Cu(NO3)2 / 2 moles NaOH) = 0.2563 moles Cu(NO3)2

Therefore, 0.2563 moles Cu(NO3)2 will produce:

0.2563 moles Cu(OH)2 x (97.56 g Cu(OH)2 / 1 mole Cu(OH)2) = 25.00 g Cu(OH)2

So, the theoretical yield of Cu(OH)2 is 25.00 g.

b. The percent yield is calculated as the actual yield divided by the theoretical yield, multiplied by 100%:

Percent yield = (actual yield / theoretical yield) x 100%

Percent yield = (75.0 g / 25.00 g) x 100% = 300%

The percent yield is greater than 100%, which indicates that there may have been errors in the experiment that led to a higher than expected yield.

This representation suggests that the element is phosphorus (P) with a mass number of 30, which is incorrect. The correct mass number for phosphorus is approximately 30.97. The incorrect representation for a neutral atom is 36Li

To determine the correct representation for a neutral atom, we need to consider the atomic number (Z) and mass number (A) of the element. The atomic number represents the number of protons in the nucleus, while the mass number represents the sum of protons and neutrons.

Let's analyze the given representations:

36Li:

This representation suggests that the element is lithium (Li) with a mass number of 36, which is incorrect. The correct mass number for lithium is approximately 6.94.

613C:

This representation suggests that the element is carbon (C) with a mass number of 13, which is correct. Carbon has different isotopes, and 13C represents one of its stable isotopes.

3063Cu:

This representation suggests that the element is copper (Cu) with a mass number of 63, which is correct. Copper has different isotopes, and 63Cu represents one of its stable isotopes.

1530P:

This representation suggests that the element is phosphorus (P) with a mass number of 30, which is incorrect. The correct mass number for phosphorus is approximately 30.97.

Therefore, the incorrect representation for a neutral atom is 36Li, as it does not match the known properties of lithium.

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Combining "hydro" and "genes" in the context of the Latin roots, we can interpret it as "water origin" or "water-related origin."

The term "hydro" in Latin means "water." It is derived from the Greek word "hydor," which also signifies water. "Hydro" is commonly used as a prefix in scientific terms related to water or hydrogen. In the context of chemistry, "hydro" often denotes a compound or process involving water or hydrogen atoms. For example, hydrocarbon refers to organic compounds composed solely of hydrogen and carbon atoms.

On the other hand, "genes" in Latin is derived from the Greek word "genos," which translates to "origin" or "birth." In biology, the term "genes" refers to the segments of DNA that contain instructions for the development and functioning of living organisms. Genes determine various traits, such as physical characteristics, behavior, and susceptibility to certain diseases. They play a fundamental role in the transmission of hereditary information from one generation to another.

This interpretation aligns with the understanding that hydrogen, which is essential for life and abundant in water, plays a vital role in various biological and chemical processes.

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Answer:

arms

Explanation:

because arms can be metric system of our body

Answer:

nose and the tip of an outstretched middle finger.

Answer::

Explanation::

Answer: Cell Membrane, and Central Vacuole

Microtubules, and Lysosome

Nuclei

Mitochondrion

Cytoplasm

Cell membrane

In the Endoplasmic Reticulum

Explanation:

If you look at the basic cell structure of both an animal and plant cell ou will see that there are many things that are unique to both.

Answer:

compared to sodium, silicon has a higher ionization energy meaning it takes more energy to remove electrons.

Explanation:

hope this helps

can u please give me and Brainlist

The density of a piece of wood with the given values for its mass and volume would be = 0.042g/cm³

Density is defined as the quantity that shows how the particles or molecules of a substance as packed together in a unit mass. It is therefore known as the mass per unit volume of a substance.

Density is very important because in a liquid medium, it allows us to determine what substances will float and what substances will sink.

Mathematically, density can be represented as follows:

Density = mass/volume = m/v, which is measured in kg/m³ or g/cm³.

The volume of the wood = 4× 6× 8 = 192cm³

The mass of the given wood = 8g

The density = 8/192 = 0.042g/cm³

Therefore, the density of the piece of wood which has the following given values would be = 0.042g/cm³.

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Complete question:

A rectangular piece of wood measures 4cm by 6cm by 8cm and has a mass of 8g. What is the density of wood of the piece?

Answer:

it is 7 and xs hope this helps :) !

Explanation:

Answer:

Explanation:

This is the answer i hope it helps

A sample of gas has Pi = 0.768 ATM, Vi = 10.5 L, and Ti = 300 K. What is the final pressure if VF = 7.85 L and T and f = 250 K?

Answer:0

Explanation:

Answer:

Krypton -73

Explanation:

There are 33 known isotopes of krypton (36Kr) with atomic mass numbers from 69 through 101.

Good luck!

Answer:

D. Krypton-73

Explanation:

An isotope of an element has the same atomic number and the same number of protons but a different number of neutrons and a different atomic weight. Krypton is the 36th element on the periodic table. It has 36 protons and 48 neutrons. Krypton-73 is one of 33 known isotopes of Krypton and is the only one that actually exists from the list of choices.

Hope that helps.

Answer:

A

Explanation:

A triglyceride (TG, triacylglycerol, TAG, or triacylglyceride) is an ester derived from glycerol and three fatty acids (from tri- and glyceride). Triglycerides are the main constituents of body fat in humans and other vertebrates, as well as vegetable fat.

The structure of option A shows a triglyceride.

Triglycerides are a kind of fat present in the blood. Triglycerides are the types of stored fats, which are not in use currently.

The structure of triglyceride is TRI esters containing glycerol bound to three fatty acid molecules.

Thus, the correct option is A.

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The molar mass of carbon atoms in 1 mole of trolamine is 72.06 g where the molar mass of compound is 149 g.

Molar mass of a compound or a molecule is defined as the mass of the elements which are present in it.The molar mass is considered to be a bulk quantity not a molecular quantity. It is often an average of the of the masses at many instances.

Molar masses of an element are given as relative atomic masses while that of compounds is the sum of relative atomic masses which are present in the compound.

Molar mass of carbon atoms in 1 mole of trolamine is given as, 12.011×6=72.06 g

Thus, the molar mass of carbon atoms in 1 mole of trolamine is 72.06 g where the molar mass of compound is 149 g.

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As per the given data, 1.6 grams of oxygen reacted in this experiment.

To calculate the amount of oxygen that reacted in the experiment, we need to determine the difference in the mass of X oxide (X,O) formed and the mass of X initially used.

Given:

Mass of X = 4.6 g

Mass of X oxide (X,O) = 6.2 g

To find the amount of oxygen that reacted:

Mass of oxygen = Mass of X oxide - Mass of X

= 6.2 g - 4.6 g

= 1.6 g

Therefore, 1.6 grams of oxygen reacted in this experiment.

Calculate the mass of 1 mole of X:

Given that the mass of X is 4.6 g, we can calculate the molar mass of X by dividing the mass by the number of moles:

Molar mass of X = Mass of X / Number of moles of X

Molar mass of X = 4.6 g / 0.1 mol

Molar mass of X = 46 g/mol

Therefore, the mass of 1 mole of X is 46 grams.

Thus, the answer is 46 grams.

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The color of the object appears as yellow/orange.

The visible light spectrum spans a wavelength range of 400 to 700 nanometers (nm), with shorter wavelengths appearing as blue or violet and longer wavelengths as red.

This object is absorbing light with wavelengths between 430 and 400 nm, indicating that it is absorbing light that is visible in the blue and violet spectrum.

We know that this color that we see is actually a complementary color to blue/violet from the color wheel.

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Answer:

Magnesium

Explanation:

The answer is Magnesium

The equilibrium constant at this temperature is Kc= 4.17 x 10⁻⁶.

Since the equilibrium constant depends on the equilibrium concentration of both the reactants and the products of the chemical reaction.

Balanced reaction equation

2CH₄(g)⇌C₂H₂(g)+3H₂(g)

The initial concentration of the CH₄ = 0.093 M

The equilibrium concentration of the H = 0.017 M

Equilibrium constant = ?

Let's make the ice table

2CH₄(g) ⇌ C₂H₂(g) + 3H₂(g)

0.093 M 0 0

-2x +x +3x

0.093-2x x 0.017 M

3x = 0.017 M

Therefore, x =0.017 M /3 = 0.00567 M

Therefore, the equilibrium concentration of CH₄ =

0.093 M – 2x = 0.093 M – (2 x 0.00567 M) = 0.0817 M

Equilibrium concentration of the C₂H₄ = x = 0.00567 M

Let's write the equilibrium constant expression

Kc= [C₂H₄[H2]³/[CH₄]²

Let's put the values in the formula

Kc= [0.00567][0.017]³/[0.0817]²

Kc= 4.17 x 10⁻⁶

Therefore, the equilibrium constant is 4.17 x 10⁻⁶.

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Answer:

a. glucose in water( solution)

b. smoke in air (colloids)

c. carbon dioxide in air (solution)

d. milk( colloids)

Explanation:

A solution is said to be formed when a solute dissolves in a solvent to form a homogeneous mixture. The solute particles are less than 10^-9m in size. Familiar solutions are those where the solute are dissolved in a liquid solvent. When the liquid water, the solution is known as an aqueous solution. A typical example is (glucose in water). In some other cases, the apparent solution of a solute in a solvent is accompanied by a chemical reaction and this is often known as a chemical reaction. A typical example is (carbon dioxide in air).

Colloids are also known as false solutions. Here, the individual solute particles are larger than the particles of the true solution, but not large enough to be seen by the naked eye. When a light beam is placed beside a beaker containing a colloid, the light rays of the beam can be clearly seen. This shows that it exhibits the Tyndall effect while a solution dosent exhibit such.

In a colloid, the liquid solvent is more appropriately know as the DISPERSION medium while the solid solute particles constitute the DISPERSED substance. This can either be solid, liquid or gas.

For example:

--> smoke in air : Dispersion medium is gas while the dispersed substance is solid.

--> milk: Dispersion medium is liquid while the dispersed substance is liquid.

Answer:

Na3N

Explanation:

cuzdoodlikeimsosure

Answer:

synthesis

Explanation:

The reaction given is a synthesis reaction or combination reaction.

Given equation:

                        NH₃  +  HCl   →   NH₄Cl

In a synthesis reaction, a single product is formed from two or more reactants

                          A + B →  C

The formation of compounds from the union of constituent elements also falls into this category.

So the given reaction is a synthesis reaction.

In a decomposition reaction two or more products are formed from a single reactant

In a single replacement reaction, one substance replaces another.

In double replacement reactions partners in a chemical specie are exchanged.

Therefore the given reaction is a synthesis reaction