PLEASE HELP ASAP WILL GIVE BRAINLIEST!!!
what is the volume of a rock in cubic cm (cm3^) with a mass of 156g and a known density of 1.93 g/cm3^

Answer:

The object that is the most dense is 1000 grams per cubic milimeter.

Explanation:

A cubic meter is equal to 1,000,000,000 cubic milimeters, 1 kilogram is equal to 1000 kilograms. First, we convert each quantity to grams per cubic milimeter:

a) \(1\,\frac{kg}{m^{3}}\times \frac{1,000\,g}{1\,kg} \times \frac{1\,m^{3}}{1,000,000,000\,mm^{3}} = \frac{1\,g}{1,000,000\,mm^{3}}\)

b) \(1\,\frac{g}{m^{3}}\times \frac{1\,m^{3}}{1,000,000,000\,mm^{3}} = \frac{1\,g}{1,000,000,000\, mm^{3}}\)

c) \(1\,\frac{kg}{mm^{3}}\times \frac{1,000\,g}{1\,kg} = 1000\,\frac{g}{mm^{3}}\)

A greater density means that an object is more dense, therefore, the object that is the most dense is 1000 grams per cubic milimeter.

The value of Kc for the given reaction is 0.0579 (rounded to four decimal places).

The formula for the equilibrium constant, Kc, of a reaction is given by the ratio of the product of the concentrations of the products raised to their respective stoichiometric coefficients to the product of the concentrations of the reactants raised to their respective stoichiometric coefficients.

The stoichiometric coefficients are the coefficients in the balanced chemical equation.

To determine the value of Kc for the reaction given by the following chemical equation:N2(g) + 3 H2(g) ⇌ 2 NH3(g)

we first need to write the expression for Kc.

The expression for Kc is given by the following formula:Kc = [NH3]² / [N2][H2]³.

We are given the equilibrium concentrations as follows:[N2]eq = 2.66 M[H2]eq = 0.64 M[NH3]eq = 3.34 M

We can substitute these values into the expression for Kc and obtain the following:Kc = (3.34)² / (2.66)(0.64)³ = 0.0579 (rounded to four decimal places).

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Answer:

\(m=406.26g\)

Explanation:

Hello,

In this case, since the density is defined as the degree of compactness of a substance and it mathematically defined as the ratio of the mass and volume:

\(\rho = \frac{m}{V}\)

By knowing that its density is 1.11 g/mL, the mass in 366 mL is:

\(m=\rho V=366mL*1.11\frac{g}{mL}\\ \\m=406.26g\)

Regards.

We must melt about 3.8 kg of brass A, 4.1 kg of brass B, and 6.5 kg of brass C to obtain about 14.5 kg of the desired alloy

we can set up a system of equations based on the conservation of mass and the desired composition:

0.533x + 0.247y + 0.220z = 14.5 (desired composition of copper, zinc, and nickel)

The given information includes:

Brass A: 41% copper, 23% zinc, 36% nickel

Brass B: 54% copper, 23% zinc, 23% nickel

Brass C: 56% copper, 26% zinc, 18% nickel

Using this information, we can write the following equations:

0.41x + 0.54y + 0.56z = 0.533(x + y + z) (copper)

0.23x + 0.23y + 0.26z = 0.247(x + y + z) (zinc)

0.36x + 0.23y + 0.18z = 0.220(x + y + z) (nickel)

Simplifying each equation, we get:

0.067x - 0.027y - 0.023z = 0 (copper)

-0.017x + 0.017y + 0.003z = 0 (zinc)

-0.020x - 0.027y + 0.038z = 0 (nickel)

We can solve the equations using substitution method or elimination method and our values will be:

x = 3.8462

y = 4.1077

z = 6.5461

In conclusion, we need to melt about 3.8 kg of brass A, 4.1 kg of brass B, and 6.5 kg of brass C to obtain about 14.5 kg of the desired alloy.

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Coenzyme q carries electrons from complex I to complex III  and complex II to complex III  in the electron-transport chain.

Coenzyme q  (CoQ), also known as ubiquinone, is the electron carrier in the electron transport system (ETS) present on the inner membrane of mitochondria.

Ubiquinone is a ubiquitous quinone, which accepts electrons from complex II ( succinate dehydrogenase) and  reduces to ubiquinol ( reduced form)

The purpose of the ETS is to generate an H+ ion concentration, by carrying electrons obtained from NADH AND \(FADH_{2}\)   produced by the Krebs cycle and glycolysis in the mitochondrial matrix. This  H+ ion potential will be used by ATP synthase to generate ATP.

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The inner mitochondrial membrane contains CoQ, a key part of the mitochondrial electron transport chain (ETC), which moves electrons from complexes I and II to complex III to provide energy for proton translocation to the intermembrane gap.

An organelle called a mitochondrion can be found in the cells of the majority of Eukaryotes, including mammals, plants, and fungi. Adenosine triphosphate, which is produced by aerobic respiration in mitochondria with their double membrane structure, is used as a source of chemical energy throughout the entire cell.

Coenzyme Q10 takes electrons from reducing equivalents produced during the metabolism of fatty acids and glucose and then transports them to electron acceptors as part of the mitochondrial electron transport chain.

Ubiquinone, also known as coenzyme Q, is a lipophilic molecule that is found in all tissues and cells and is mostly found in the inner mitochondrial membrane. It is generally known that Coenzyme Q is an essential part of the oxidative phosphorylation process in mitochondria.

Thus, The inner mitochondrial membrane contains CoQ, a key part of the mitochondrial electron transport chain (ETC).

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The observation of a smaller outside hole than inside leads Becca to infer that an impact from the outside caused the hole, with a larger object striking and passing through the window from the inside.

From the observation that the hole in the window is smaller on the outside than on the inside, Becca, as a forensic technician, might deduce the following:

The hole was caused by an impact from the outside: The smaller outside hole suggests that the force that created the hole originated from the outside and exerted more pressure on the window surface facing inward.

The object causing the hole was larger on the inside: The discrepancy in hole sizes implies that the object that struck the window had a larger size or diameter on the inside, and as it penetrated the glass, it compressed or fragmented the glass, resulting in a larger hole on the inside.

The object may have passed through the window: The difference in hole sizes indicates that the object may have penetrated the window, potentially passing through to the inside. This could suggest a break-in or an incident involving the window being struck from the outside.

Overall, the observation of a smaller outside hole than inside leads Becca to infer that an impact from the outside caused the hole, with a larger object striking and passing through the window from the inside.

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Answer:

he is ok

Explanation:

Answer: Yes but I also love louis and the Larry Stylinson ship theyre so cute!

Explanation:

0>0

Answer:

89.1Joule Because when Multiply The Half Of Mass With The Square of Velocity we Get We Get Eighty nine Point One

Answer:

Explanation:

Here, we want to know the constituent monomers of a polyester

Polyester is a condensation polymer that results from the combination of two different polymers

It is a condensation polymer since molecules of water are expunged from the product

The two different monomers are dicarboxylic acid and a diol (a di hydroxyl alcohol)

The mass of Fluorine in grams in the second sample is 2066 g. The concept law of definite proportions is used here to obtain the mass of Fluorine in the second sample.

This law was stated by a French chemist, Louis Proust. It states that 'a chemical compound always contains the same elements combined together in the same proportion by mass'.

The mass of Mg in sample 1 is 1.66 kg and that of F is 2.56 kg. The mass of Mg in sample 2 is 1.34 kg and we have to find out the mass of F in second sample.

The mass of Fluorine in sample 2 can be obtained by using the mass ratio of the elements in sample 1.

In sample 1:

Mass of magnesium ÷ Mass of Fluorine = 1.66 kg ÷ 2.56 kg

In sample 2:

By using dimensional analysis,

Mass of Fluorine = 2.56 kg Fluorine ÷ 1.66 kg Magnesium × 1.34 kg Magnesium

Therefore the mass of Fluorine = 2.066 kg

The mass in kilogram can be converted into grams as:

Mass of Fluorine = 2.066 kg × 1000 g ÷ 1 kg = 2066 g

Thus the mass of Fluorine in the second sample is 2066 g.

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Answer: 0

Explanation:

Atoms have neutral charge.

Explanation:

well when you heat ice the individual molecules gain kinetic energy. but until the temperature reaches it's melting point they don't have the energy to break bonds and hold their crystal structure. So, the temperature remains constant until the ice has melted. Hope this helped. Good luck on your project!

Photosynthesis is a chemical reaction it leads to the generation of oxygen and provides food for both plants and animals.

This is the process by which plants convert carbon dioxide and water into glucose and oxygen using energy from the sun. It is the basis for all life on Earth, as it provides the energy and oxygen necessary for life.

Photosynthesis is the process by which plants, algae, and some bacteria convert light energy from the sun into chemical energy in the form of glucose and other organic compounds.

This process is carried out by special structures called chloroplasts, which contain a pigment called chlorophyll that gives plants their green color.

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Answer:

\(5.12*10^2^3\) atoms

Explanation:

\(0.85 moles Fe*\frac{6.022*10^2^3}{1 mole Fe} =5.12*10^2^3\)

Use dimensional analysis to convert to moles by putting the moles of Fe (iron) on top and multiply by Avogadro's constant to cancel out moles and be left with atoms.

Answer:

c

Explanation:

Answer:

The answer is C

Explanation:

Answer:

Explanation:

The names Px, Py and Pz, indicate the orientation of the orbital in space. The key difference between Px Py and Pz orbitals is that Px orbital has two lobes oriented along the x-axis and Py orbital has two lobes oriented along the y-axis whereas Pz orbital has two lobes oriented along the z-axis.

Answer:

Px can stand for Picture Pixel Prescription Prognosis Post Exchange or Physical Exam Personal Exchange Price.

Pz can stand for Precautionary Zone

Py can stand for Program Year or Python

Explanation:

hope this helps

Answer:

d the amount of matter in a closed system is the same at the start of a reaction as at the end of the reaction

Answer:

D

Explanation:

i am doing the test rn and i found the answer in other places

Answer: what do u need help with ?

Explanation:

Answer:

in all green plants and most algae

Answer:

flo-non metal

germ- metalloid

zinc - metal

phos- non metal

lithium- metal

Answer:

C. It has the same concentration of hydronium and hydroxide ions.

Explanation:

A neutral solution means that it's a balanced substance that is neither a base nor an acid. For example, pure water is a neutral substance.

(I also did the test for this and I got it correct.)

Hope this helps any future people doing this! :)

Answer:same concentration of hydronium and hydroxide ions (C)

Explanation:

Answer:

right now we are using energy by online learning on our laptops , air conditioning, and transportation

Explanation:

Answer:

the answer should be A if im correct

Explanation:

The replacement reaction will not occur because iodine is less reactive than chlorine.

A replacement reaction is a type of reaction in which one element is replaced by another in a compound.

The principle behind one element replacing the other is based on the reactivity of an element. A more reactive element will displace a less reactive one.

According to this question, the following displacement reaction is given: MgCl2 + I2 → ?

This reaction will not occur because chlorine is more reactive/electronegative than iodine, hence, iodine cannot displace it.

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The pH of a solution with a hydroxide ion concentration of 2.3 x 10^-5 M is approximately 9.362.

pOH = -log[OH-]

Since pH + pOH = 14 (at 25°C), we can rearrange the equation to solve for pH:

pH = 14 - pOH

Given that the concentration of OH- is 2.3 x 10^-5 M, we can calculate the pOH as follows:

pOH = -log(2.3 x 10^-5)

Using logarithm properties, we can simplify the expression:

pOH = -log(2.3) - log(10^-5)

Since log(10^-5) = -5, the equation becomes:

pOH = -log(2.3) - (-5)

Next, we need to calculate the value of -log(2.3):

log(2.3) ≈ -0.362

Substituting this value into the pOH equation:

pOH ≈ -0.362 - (-5)

pOH ≈ -0.362 + 5

pOH ≈ 4.638

Now, we can calculate the pH using the pH + pOH = 14 equation:

pH = 14 - 4.638

pH ≈ 9.362

Therefore, the pH of a solution with a hydroxide ion concentration of 2.3 x 10^-5 M is approximately 9.362.  It's possible that the concentration was meant to be 2.3 x 10-9 M, which would give a pH of 9.64. Alternatively, if the concentration of H+ ions was given instead, we could use the formula pH = -log[H+] to find the pH of the solution.

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Answer:

B

Explanation:

I took the assessment

KH2PO4 is a more suitable choice as a buffer because it has a greater buffering capacity due to the presence of the weak acid and its conjugate base.

KHPo4 is not considered an effective buffer compared to KH2PO4 due to its limited buffering capacity. The effectiveness of a buffer is determined by the concentration and dissociation properties of its conjugate acid-base pair.

KH2PO4 is a salt composed of the weak acid H2PO4- and its conjugate base HPO4^2-. In an aqueous solution, KH2PO4 can dissociate to release H+ ions from the H2PO4- component, which acts as a weak acid, and the HPO4^2- component can accept H+ ions, acting as a weak base. This allows KH2PO4 to effectively resist changes in pH when small amounts of acid or base are added to the solution.

On the other hand, KHPo4 consists of the strong acid H3PO4 and the weak base HPO4^2-. H3PO4 fully dissociates in water, providing a large concentration of H+ ions, making it difficult for the HPO4^2- to effectively act as a base and maintain pH stability.

Therefore, KH2PO4 is a more suitable choice as a buffer because it has a greater buffering capacity due to the presence of the weak acid and its conjugate base.

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Answer: It is causing erosion, landslides, and craters. If this keeps up the ice in the artic will eventually be gone

Explanation:

Answer:

=342g

Explanation:

atomic mass of C = 12g

atomic mass of H =  1g

atomic mass of O = 16g

Solution;

    C12 H22 O11

= 12 (12) + 22 (1) + 11(16)

= 144+ 22 + 176

= 342g

The statement "All organic compounds contain the element carbon, but not all compounds containing the element 'carbon' are organic" can be justified based on the definition and characteristics of organic compounds.

Organic compounds are compounds primarily composed of carbon and hydrogen atoms, often with other elements like oxygen, nitrogen, sulfur, and phosphorus. These compounds are typically associated with living organisms and are known for their unique properties and behavior, including the ability to form complex structures, exhibit covalent bonding, and undergo organic reactions.

On the other hand, there are compounds that contain carbon but are not classified as organic. One notable example is carbon dioxide (\(CO_{2}\)), which is a simple inorganic compound composed of carbon and oxygen. Carbon dioxide does not possess the characteristic properties of organic compounds, such as the ability to form long chains or undergo organic reactions.

Additionally, there are inorganic compounds like carbonates (such as calcium carbonate) and carbides (such as calcium carbide) that contain carbon but are not considered organic. These compounds have distinct chemical and physical properties different from those of organic compounds.

In summary, while all organic compounds contain carbon, not all compounds containing carbon are organic. The classification of a compound as organic or inorganic depends on its overall molecular structure, bonding, and characteristic properties.

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