When light pases through a prisim,white light will be separated into different colors. which statment best explains this observation?​

Answer:

\(\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}\)

To determine the grams of CO2 formed when 7.50 g of C2H5OH (ethanol) is produced, we need to consider the balanced chemical equation for the combustion of ethanol:

C2H5OH + 3O2 -> 2CO2 + 3H2O

From the balanced equation, we can see that for every 1 mole of C2H5OH, 2 moles of CO2 are produced. We can use the molar mass of ethanol and the molar mass of CO2 to calculate the grams of CO2 produced.

The molar mass of C2H5OH is calculated as follows:

(2 x molar mass of C) + (6 x molar mass of H) + molar mass of O

(2 x 12.01 g/mol) + (6 x 1.008 g/mol) + 16.00 g/mol = 46.07 g/mol

Now we can set up a proportion to calculate the grams of CO2:

(7.50 g C2H5OH) / (46.07 g/mol C2H5OH) = (x g CO2) / (44.01 g/mol CO2)

Cross-multiplying the proportion:

7.50 g C2H5OH * (44.01 g/mol CO2) = 46.07 g/mol C2H5OH * x g CO2

Simplifying the expression:

x = (7.50 g C2H5OH * 44.01 g/mol CO2) / 46.07 g/mol C2H5OH

Calculating the result:

x ≈ 7.17 g CO2

Therefore, approximately 7.17 grams of CO2 are formed when 7.50 grams of C2H5OH are produced.

The carbon dioxide produced during the breakdown of pyruvic acid is a byproduct of decarboxylation and the Krebs cycle. This CO2 is expelled from the cell as waste, while the remaining compounds continue through the process of cellular respiration to generate ATP, which provides energy for the cell.

The carbon dioxide produced during the breakdown of pyruvic acid plays a crucial role in the process of cellular respiration. Pyruvic acid, a three-carbon compound, is generated through glycolysis, the first stage of cellular respiration that occurs in the cytoplasm.

When pyruvic acid enters the mitochondria, it undergoes a process called decarboxylation, facilitated by the pyruvate dehydrogenase complex. During decarboxylation, one carbon atom is removed from the pyruvic acid molecule, forming carbon dioxide as a byproduct. This CO2 is subsequently released from the cell as waste.

Simultaneously, the remaining two-carbon molecule, called acetyl CoA, combines with oxaloacetate in the Krebs cycle (also known as the citric acid cycle or TCA cycle). Throughout the Krebs cycle, the carbon molecules undergo a series of reactions, which ultimately lead to the formation of additional CO2 molecules. These CO2 molecules are also released as waste products.

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The application of diuron decreases the activity of ATP, NADPH, and sugar production.  

• Diuron is an active herbicide and algaecide, which prevents the process of photosynthesis and hinders the tendency of the weed to turn light energy into chemical energy.  

• It prevents the process of photosynthesis by preventing the production of oxygen and blocks the transfer of electrons of photosystem II in plants, thus, preventing the electron transport chain.  

• This eventually decreases the production of ATP, NADPH, and sugar in plants.  

Thus, diuron decreases ATP, NADPH, and sugar.  

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Answer:

Temperature

Explanation:

i GUESS that's the ans lol sry I needed points

There are seven types of hydrophobic amino acids present which are- Alanine, Valine, Leucine, Isoleucine, Methionine, Phenylalanine and Tryptophan. There are total 20 known amino acids present in nature.

The seven hydrophobic amino acids are:

1. Alanine (Ala)

2. Valine (Val)

3. Leucine (Leu)

4. Isoleucine (Ile)

5. Methionine (Met)

6. Phenylalanine (Phe)

7. Tryptophan (Trp)

These amino acids have nonpolar, hydrophobic side chains, which means they tend to avoid contact with water and instead tend to associate with each other or with other hydrophobic molecules. This makes them important for forming the hydrophobic core of proteins, where they can help stabilize the protein structure.

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Answer:

A. hibernation

Answer:

Hibernation.

Explanation:

The kinetic energy of the liberated electron is 1.73 x 10⁻¹⁹ J.

The total energy of the light is the sum of the kinetic energy of the electron and work function of the metal.

E = K.E + Ф

where;

The total energy of the photons of light is calculated as follows;

E = hf

where;

E = (6.626 x 10⁻³⁴) x (9.62 x 10¹⁴)

E = 6.37 x 10⁻¹⁹ J

1 eV = 1.6 x 10⁻¹⁹ J

E = 6.37 x 10⁻¹⁹ J = 3.98 eV

The kinetic energy of the liberated electron is calculated as;

E = K.E + Ф

K.E = E - Ф

K.E = 3.98 eV - 2.9 eV

K.E = 1.08 eV = 1.73 x 10⁻¹⁹ J

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The unknown organic molecule contains approximately 40.8% carbon, 3.4% hydrogen, and 55.8% oxygen by mass. These percentages were determined based on the masses of CO₂ and H₂O produced during combustion.

Let's start by calculating the sample's carbon (C) mass. \(C_aH_bO_c + excess \ O_2 -- > xCO_2 + yH_2O\) is the given equation.

We can see from the balanced equation that one mole of carbon is found in one mole of CO₂. The mass of carbon in the CO₂ produced is (156 mg / 44 g/mol) × 12 g/mol = 42 mg since the molar mass of CO₂ is 44 g/mol.

The mass of hydrogen (H) in the sample will then be determined. Two moles of hydrogen make up one mole of water. The mass of hydrogen in the H₂O produced is (31.9 mg / 18 g/mol) × 2 g/mol = 3.55 mg since the molar mass of H₂O is 18 g/mol.

By deducting the masses of carbon and hydrogen from the overall sample mass, we can finally get the mass of oxygen (O) in the sample: 103 mg - 42 mg - 3.55 mg = 57.45 mg.

By dividing each element's mass by the sample's overall mass (103 mg), then multiplying the result by 100, we can get the mass percentage of each component.

The percentages of C, H, and O are (42 mg/103 mg) × 100 = 40.8%, 3.55 mg/103 mg × 100 = 3.4%, and (57.45 mg/103 mg) × 100 = 55.8%, respectively.

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The given question is incomplete, complete question is - "If a 103 mg sample of an unknown organic molecule that contains C, H, and O is burned with excess oxygen gas to product 156 mg of CO2 and 31.9 mg of H2O by the generalized reaction below: CaHbOc + excess O₂ --> xCO₂ + yH₂O Determine the mass % of C, H, and N to the nearest 0.1%. Only input numeric values."

'The statement the amount of carbon dioxide production produced by the ocean and taken in by the ocean is close to 100% balanced is TRUE.

The relationship between photosynthetic rate and respiration rate is nearly equal in order to maintain homeostasis or internal equilibrium in the biosphere, which can be considered a whole ecosystem.

Therefore, with this data, we can see that the relationship between photosynthetic rate and respiration rate is given by a nearly similar amount of carbon dioxide production and consumption.

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the answer is Cr in Cr2O7.

Explanation:

it's oxidation number is +7 in the compound

while Fe has +3 and P has +6 in their respective compounds

The oxidation state is the gained or lost electrons by an atom to create a chemical bonding. Chromium (Cr) in Cr₂O₂⁻⁷ has the highest oxidation state. Thus, option C is correct.

Oxidation is the representation of the electrons that are lost and gained by an element in a molecule or compound to establish a chemical bond. The oxidation number of free elements is always zero, and hydrogen is usually +1.

The oxidation state of P in H₂PO⁻₄ is given as,

2 (1) + P + 4(-2) = -1

P = + 5

The oxidation number of Fe in Fe₂O₃ is given as,

2Fe + 3O = 0

2Fe + 3(-2) = 0

Fe = + 3

The oxidation number of Cr in Cr₂O₂⁻⁷ is given as,

2Cr + 7O = -2

2Cr + 7(-2) = -2

Cr = + 6

Therefore, chromium (+6) in Cr₂O₂⁻⁷ has the highest oxidation state.

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Answer:

symbol?

Explanation:

Answer:

- 143.6 g of N₂ ; 3.08×10²⁴ molecules of N₂

- 451.4 g of CO₂ ; 6.17×10²⁴ molecules of CO₂

- 153.9 g of H₂O ; 5.14×10²⁴ molecules of H₂O

- 27.3 g of O₂ ; 5.14×10²³ molecules of O₂

Explanation:

This is a reaction of decomposition:

4C₃H₅N₃O₉(s)  →  6N₂(g)  +  12CO₂(g)  +  10H₂O(g)  +  O₂(g)

4 moles of solid nitroglycerine decompose to 6 moles of nitrogen, 12 moles of carbon dioxide, 10 moles of water vapor and 1 mol of oxygen

We convert mass to moles → 777 g. 1mol/ 227g = 3.42 moles

4 moles of C₃H₅N₃O₉ can decompose to:

6 moles of N₂ ____  12 moles of CO₂ ___ 10 moles of H₂O ___ 1 mol of O₂

Then, 3.42 moles of C₃H₅N₃O₉ may decompose to:

(3.42 . 6) / 4  =  5.13 moles of N₂

(3.42 . 12) / 4 = 10.26 moles of CO₂

(3.42 . 10) / 4 = 8.55 moles of water vapor

(3.42 . 1) / 4 = 0.855 moles of oxygen

We convert the moles to mass:

5.13 mol . 28 g/mol = 143.6 g of N₂

10.26 mol . 44 g/mol = 451.4 g of CO₂

8.55 mol . 18 g/mol = 153.9 g of H₂O

0.855 mol . 28 g/mol = 27.3 g of O₂

We count the atoms:

5.13 mol . 6.02×10²³ molecules /mol = 3.08×10²⁴ molecules of N₂

10.26 mol . 6.02×10²³ molecules /mol = 6.17×10²⁴ molecules of CO₂

8.55 mol . 6.02×10²³ molecules /mol = 5.14×10²⁴ molecules of H₂O

0.855 mol . 6.02×10²³ molecules /mol = 5.14×10²³ molecules of O₂

a. There are 1.85 moles in 2.00 × 10² g of silver (Ag).

b. There are 0.618 moles in 37.1 g of silicon dioxide (SiO₂)

The molar mass is the mass in grams of 1 mole of particles, that is, the mass in grams of 6.02 × 10²³ particles. The units are g/mol.

We want to calculate the number of moles represented by different masses of different substances. In each case, the conversion factor between mass and moles is the molar mass.

The molar mass of silver is 107.87 g/mol.

2.00 × 10² g × (1 mol/107.87 g) = 1.85 mol

The molar mass of silicon dioxide is 60.08 g/mol.

37.1 g × (1 mol/60.08 g) = 0.618 mol

a. There are 1.85 moles in 2.00 × 10² g of silver (Ag).

b. There are 0.618 moles in 37.1 g of silicon dioxide (SiO₂)

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Answer:

exothermic i think beacuse thre is not photo

The energy as heat needed to increase the temperature of 0.40 mol of tungsten by 10.0 K is 96.8J.

The energy of a substance can be calculated using the following formula;

Q = mc∆T

Where;

According to this question, the molar heat capacity of tungsten is 24.2 J/K•mol. The energy as heat needed to increase the temperature of 0.40 mol of tungsten by 10.0 K is as follows:

Q = 0.40 × 24.2 × 10

Q = 96.8J

Therefore, 96.8J is the energy of the tungsten metal.

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False. Electrostatic catalysis and covalent bonding interactions are two different types of chemical interactions that occur between atoms and molecules.

Electrostatic catalysis refers to a process in which a catalyst accelerates a chemical reaction by altering the charge distribution around the reactants, without participating in the reaction itself. This process relies on the electrostatic interactions between the catalyst and the reactants, which can help to stabilize the transition state of the reaction and lower the activation energy required for the reaction to proceed.

In contrast, covalent bonding interactions occur when atoms share electrons to form a chemical bond. These interactions are much stronger than electrostatic interactions and involve the sharing of electrons between atoms.

While both types of interactions can play important roles in chemical reactions, electrostatic catalysis does not typically involve covalent bonding interactions. Instead, it relies on the weaker electrostatic interactions between the catalyst and the reactants. These interactions can be enhanced by the geometric and electronic properties of the catalyst, as well as the nature of the reactants and the reaction conditions.

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Approximately 200.18 grams of gallium oxide will be produced when 150 grams of gallium reacts with excess oxygen.

To determine the mass of gallium oxide produced when 150 g of gallium reacts with excess oxygen, we need to understand the balanced chemical equation for the reaction between gallium and oxygen.

The balanced equation for the reaction is:

4 Ga + 3 O2 → 2 Ga2O3

From the balanced equation, we can see that 4 moles of gallium react with 3 moles of oxygen to produce 2 moles of gallium oxide (Ga2O3).

To calculate the mass of gallium oxide produced, we need to follow these steps:

Convert the mass of gallium (150 g) to moles.

The molar mass of gallium (Ga) is 69.72 g/mol. Therefore, the number of moles of gallium is:

Moles of gallium = Mass of gallium / Molar mass of gallium

= 150 g / 69.72 g/mol

≈ 2.15 moles

Determine the mole ratio between gallium and gallium oxide.

From the balanced equation, we know that 4 moles of gallium react to form 2 moles of gallium oxide. Therefore, the mole ratio is 4:2, which simplifies to 2:1.

Calculate the moles of gallium oxide produced.

Since the mole ratio is 2:1, the number of moles of gallium oxide produced is half the number of moles of gallium:

Moles of gallium oxide = 2.15 moles / 2

≈ 1.07 moles

Convert moles of gallium oxide to mass.

The molar mass of gallium oxide (Ga2O3) is 187.44 g/mol. Therefore, the mass of gallium oxide produced is:

Mass of gallium oxide = Moles of gallium oxide * Molar mass of gallium oxide

= 1.07 moles * 187.44 g/mol

≈ 200.18 g

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Answer:

A. The children will be more likely to survive than if they did not have the trait.

Explanation:

Process of elimination

B. It will not affect the children.

Cannot be true, if it didn't impact the children then how would survival of the fittest work?

D. The children will be able to adapt if the environment changes.

That just... not how adapting works when it comes to evolution.

C. The children will be more likely to survive than their parents were

Everyone has the same trait, everyone is equal in that regard.

A. The children will be more likely to survive than if they did not have the trait.

"Suppose a pair of animals has a trait that helps them survive in their environment." The trait helps them survive. Not having the trait makes them less likely to survive. A is correct

Answer:

\({ \tt{c). \: replacement}}\)

C) replacement

Iron(III) oxide (Fe2O3) reacts with aluminium(Al) to form aluminium oxide(Al2O3) and molten iron(Fe). This is a replacement reaction

C2H2 will be left  when the burning is complete.

The equation of the reaction is; 2C2H2 + 5O2 --> 4CO2 + 2H2O

The number of moles of C2H2 reacting is = 1.20 g/26 g/mol = 0.046 moles

The number of moles of O2 is = 3.50 g/32 g/mol = 0.109 moles

Since;

2 mole of C2H2 reacts with 5 moles of O2

x moles of C2H2 reacts with 0.109 moles of O2

x = 2 mole × 0.109 moles/5 moles

x = 0.044 moles of C2H2.

It then follows that C2H2 is the reactant in excess so C2H2  will be left  when the burning is complete.

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Answer:

index fossils are important for index fossils because

they use them to match up rock layers in certain locations

that may be far apart!

they are ALSO important to scientists because it helps them with relative age.

Explanation:

Answer:

Convection

Explanation:

▶ Convection is the transfer of heat through a gas or a liquid. The gas in this case would be the air passing through the heat and moving in a large quantity that then heats the hair.

It may be all of the above since the hair dryer is using both convection and conduction produce hot air but it says clearly so im assuming its Convection.

Brainly is appreciated! Hope I helped!

According to the bohr model of the atom, the single electron of a hydrogen atom circles the nucleus is specific allowed orbits.

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The electron transition that will absorb the photon of smallest frequency (ν) is n = 6 to n = 5, as it involves the smallest energy difference between the energy levels.

When an electron in an atom absorbs a photon, it moves to a higher energy level or orbital. The energy of the photon must match the energy difference between the initial and final energy levels. The frequency (ν) of the photon is directly proportional to its energy (E), and inversely proportional to its wavelength (λ). The electron transition that absorbs the photon of smallest frequency involves the smallest energy difference between the energy levels, which is n = 6 to n = 5. This means that the wavelength of the absorbed photon will be relatively longer compared to the other transitions listed. Understanding these electron transitions is important for many applications, such as spectroscopy, lasers, and quantum computing.

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Nitroglycerin is an explosive substance that has been used in a variety of applications over the years, including as a medication for heart conditions. Here are some simple explanations to your questions:

From the calculations and the principles of radioactivity, the age of the parent isotope is 144 years

The term radioactivity has to do with the spontaneous decay of a substance.

We know that we have about 25% parent isotope still remaining hence;

\(0.693/t1/2 =2.303/t log No/N\\When N =0.25 No and t1/2 = 72 years\\0.693/72 =2.303/t log No/0.25No\\0.0096 = 2.303/t *0.60206\\0.0096 = 1.3865/t\\t = 1.3865/0.0096\\t =144 years\)

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Answer:

A. 144 years old

Explanation:

Answer:

cm is a measure of length not volume

Answer:

I think it's Cm:)

Hope this helps

Answer:

D

Explanation:

Because it has equal number of elements on each side of the arrow

The molecules that are products in the Krebs cycle are CO2, NADH, FADH2, and ATP. The remaining molecules listed (FAD, NAD+, Acetyl, CoA, Oxygen, and Pyruvate) are not direct products of the Krebs cycle.

The Krebs cycle, also known as the citric acid cycle or tricarboxylic acid cycle, is a series of chemical reactions that occur in the mitochondria of cells. It plays a crucial role in the oxidative metabolism of glucose and other fuels.

In the Krebs cycle, the following molecules are products:

a) FADH2: FADH2 is produced during the conversion of succinate to fumarate in the Krebs cycle.

b) NADH: NADH is produced during multiple steps of the Krebs cycle, including the conversion of isocitrate to α-ketoglutarate and the conversion of malate to oxaloacetate.

c) ATP: ATP is not directly produced in the Krebs cycle. However, it is generated through oxidative phosphorylation, which is tightly coupled to the electron transport chain that receives electrons from NADH and FADH2 produced in the Krebs cycle.

d) CO2: Carbon dioxide (CO2) is released as a byproduct during various reactions in the Krebs cycle, including the conversion of isocitrate to α-ketoglutarate and the conversion of α-ketoglutarate to succinyl-CoA.

The molecules FAD, NAD+, Acetyl, CoA, Oxygen, and Pyruvate are involved in the Krebs cycle but are not considered direct products. FAD is a cofactor that is reduced to FADH2 during the cycle, NAD+ is reduced to NADH, Acetyl is a reactant that combines with oxaloacetate to form citrate, CoA is a cofactor that assists in the formation of acetyl-CoA, Oxygen is used as the final electron acceptor in oxidative phosphorylation, and Pyruvate is an intermediate produced from glucose metabolism but enters the Krebs cycle after being converted to acetyl-CoA.

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