how many pgal molecules will it take to make one molecule of glucose? justify your answer with a discussion of numbers of carbon atoms.

Answer:

c

Explanation:latitude,longitude

Answer:

atomic numbers

Explanation:

Atoms are the unit of molecules and compounds or matter. They have their atomic numbers and mass. Atoms of different elements must have different atomic numbers. Thus, option C is correct.

An atomic number is the total number of protons in a nucleus that is an essential factor in determining the place and position of the atom in the periodic chart.

Though the nucleus is made of neutrons and protons, the atomic number is only defined by the number of protons alone. Hence, the number of protons is equivalent to the atomic number.

The number of the protons and neutrons together makes the atomic mass of the element that is expressed at the lower of the symbol, whereas the atomic number is written at the upper of the symbol.

Therefore, the atomic number is different in each atom.

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Answer:

162.7miles/hr

Explanation:

Given parameters:

Distance covered by the train  = 813.5miles

Time taken  = 5hours

Unknown:

Speed of the train  = ?

Solution:

Speed is a physical quantity.

It is mathematically expressed as;

      Speed  = \(\frac{distance}{time}\)

So, input parameters and solve;

   Speed  = \(\frac{813.5}{5}\)  = 162.7miles/hr

Answer:

Because Democritus or Liucipius cannot demonstrate or proof their ideas as they did not have any equipment or any research to prove the existence of atoms.

Explanation:

John Dalton, Democritus and Leucipius are some of the greatest scientist and scholars of the past.

Democritus originally proposed or gave the idea of the of the composition of the matter of indivisible and tiny particles. John Dalton is credited for the beginning of the modern atomic theory.

Democritus believed that a matter is made up of atoms that can move about empty spaces. They are small, indestructible, solid, indivisible and of different shapes and sizes. Democritus proposed his idea at that time as there were no scientific advancement or instruments to prove his ideas about atoms.

Later on when science and scientific processes were advanced, Dalton was able to prove and proceed on the atomic model theory.

Democritus cannot prove his ideas as there were no instruments or advance scientific processes and so people felt his ideas as illogical. His proposals were based on his ideas.  

It might directly convert into a photoelectric effect like a solar panel. Alternatively, it may be transformed first into mechanical energy, as in boiling a working fluid and powering a turbine, or it could be transformed into chemical energy, as in photosynthesis, which grows trees and then burns the wood to power a steam engine and generator.

Electrons are released when a material is exposed to electromagnetic radiation, such as light, known as the photoelectric effect. These electrons are referred to as photoelectrons. To derive conclusions regarding the properties of atoms, molecules, and solids, the phenomena are researched in condensed matter physics, solid state chemistry, and quantum chemistry. Electronic devices designed for light sensing and precisely timed electron emission have found usage for the effect.

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Answer:

cho

Explanation:

Answer:

The inner core is a hot, dense ball of (mostly) iron. It has a radius of about 1,220 kilometers (758 miles). Temperature in the inner core is about 5,200° Celsius (9,392° Fahrenheit). The pressure is nearly 3.6 million atmosphere (atm).

Explanation:

Answer:

Explanation:

Here, we want to spell out the names of the elements present in the compound

There are three elements in the given compound

We have Mg, O and H

The names can be obtained from the periodic table of element

We have;

Mg - Magnesium

O - Oxygen

H- Hydrogen

The strongest reducing agent among the given reduction potentials is Fe2+. This is because Fe2+ has the highest negative reduction potential among the options (-0.44 V) which indicates a stronger tendency to lose electrons and get oxidized, thereby reducing another species.

A reducing agent is a substance that undergoes oxidation and causes the reduction of another species in a chemical reaction. The more negative the reduction potential of a substance, the stronger it is as a reducing agent because it will more readily donate electrons to reduce other species.
On the other hand, the stronger oxidizing agent is the one with the highest positive reduction potential, which is Ag+ in this case. An oxidizing agent is a substance that undergoes reduction and causes the oxidation of another species in a chemical reaction.

It's important to note that Cu and Ag can form alloys, but CuAg cannot be considered as an option in this context as it is not an ion that can undergo reduction or oxidation.

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Image 3 and image 6 models represent a mixture of two compounds in the attached diagram below.

Pure substances can be described as elements that cannot be further broken down into simple substances that exhibit only one type of atom in the whole composition.

A pure substance can be defined as made up of two or more elements that are chemically combined and have a set composition such kind of pure substance is known as a compound.

A mixture is constructed of two or more different substances which are only physically combined. A mixture can break down into its original components.

The chemical composition of a heterogeneous mixture is non-uniform throughout the mixture while the chemical composition of the substance in a homogeneous mixture is always uniform.

The mixture can be defined as a compound that is only physically combined not chemically. A single element is considered a pure substance, not a compound.

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a) The sphere emits thermal radiation at a rate of 139.75 Watts.

b) The sphere absorbs thermal radiation at a rate of 37.66 Watts.

c) The sphere's net rate of energy exchange is 102.09 Watts.

To calculate the rates of thermal radiation emission and absorption, we can use the Stefan-Boltzmann law, which states that the rate of thermal radiation emitted or absorbed by an object is proportional to its surface area, temperature, and the Stefan-Boltzmann constant.

a) The rate of thermal radiation emitted by the sphere can be calculated using the formula:

Emitting Rate = emissivity * surface area * Stefan-Boltzmann constant * (\(temperature^4 - environment\ temperature^4\))

Plugging in the given values:

Emitting Rate = \(0.924 * (4\pi * (0.457)^2) * 5.67 \times 10^{-8} * ((32.2 + 273.15)^4 - (82.9 + 273.15)^4)\)

Emitting Rate ≈ 139.75 Watts

b) The rate of thermal radiation absorbed by the sphere can be calculated in a similar way but using the environment temperature as the object's temperature:

Absorbing Rate = emissivity * surface area * Stefan-Boltzmann constant * (\(environment\ temperature^4 - temperature^4\))

Plugging in the given values:

Absorbing Rate = \(0.924 * (4\pi * (0.457)^2) * 5.67 \times 10^{-8} * ((82.9 + 273.15)^4 - (32.2 + 273.15)^4)\)

Absorbing Rate ≈ 37.66 Watts

c) The net rate of energy exchange is the difference between the emitting rate and the absorbing rate:

Net Rate = Emitting Rate - Absorbing Rate

Net Rate = 139.75 Watts - 37.66 Watts

Net Rate ≈ 102.09 Watts

Therefore, the sphere emits thermal radiation at a rate of 139.75 Watts, absorbs thermal radiation at a rate of 37.66 Watts, and has a net rate of energy exchange of 102.09 Watts.

Note: The units for all the rates are Watts.

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a. Coupling reactions allow cells to capture the free energy of glucose oxidation by linking the exergonic (energy-releasing) reaction of glucose oxidation with endergonic (energy-consuming) reactions in the cell. This efficient use of energy prevents the loss of energy as heat to the environment.

1. Glucose oxidation occurs in a series of steps in the cell, such as glycolysis and pyruvate processing.
2. In each step, a small amount of energy is released from the glucose molecule.
3. This energy is captured by coupling the exergonic reaction with an endergonic reaction, such as the phosphorylation of ADP to form ATP.
4. The ATP molecules generated can then be used as an energy source for other cellular processes, like protein synthesis or cell division.
5. By using the energy released from glucose oxidation in this way, cells are able to efficiently use the energy and minimize the loss of energy as heat to the environment.

This process affects other reactions in the cell by providing a continuous supply of energy in the form of ATP, which is essential for various cellular processes and maintaining the overall function and homeostasis of the cell.

b. A scientific question that a scientist might ask about how these processes are conserved across phyla could be: "What are the molecular mechanisms that enable the conservation of glucose oxidation and coupling reactions across different phyla, and how have these mechanisms evolved over time to maintain energy efficiency in various organisms?"

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A repeat experiment reveals that an atom of the sample of Element Z actually has 20 electrons; option C.

Elements are pure substances which are composed entirely of the smae atoms.

Elements are substances which cannot be split into simpler units by an ordinary chemical process.

Atoms of the same element have the same atomic number or number of protons as well as electron numbers if they are neutral.

Considering the given data:

Element X Element Y Element Z

Number of Protons 19 20 unknown

Number of Neutrons 21 20 unknown

Number of Electrons 19 20   19

Element X and element Z have the same atomic number.

The statement that will disprove the second student's argument is that A repeat experiment reveals that an atom of the sample of Element Z actually has 20 electrons.

In conclusion, when elements have different electron numbers as neutral atoms, they are different elements.

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Answer:

The formula of acceleration is final velocity-initial velocity÷time taken

Explanation:

v-u/t

Answer:

acceleration = (vFinal − vInitial)/ (tFinal − tInitial) Where v stands for velocity and t stands for time.

Due to the disparity in mass between the two objects, the acceleration of the two objects varies.

Friction is the resistance to a thing moving or rolling over another solid object. Although they can be helpful, frictional forces, such as the traction required to walk without slipping, nevertheless pose a significant amount of resistance to motion.

Acceleration is influenced by mass. The acceleration decreases with increasing mass. A = f/m, or acceleration equals force times mass, is the formula for measuring speed. Due to the increased mass of the cookie plate compared to the milk glass, the acceleration is faster for the milk glass and slower for the cookie plate.

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I'm pretty sure it's A, but then again I'm only in 8th grade. Sorry if this doesn't help:(

Answer:

a formula giving the proportions of the elements present in a compound but not the actual numbers or arrangement of atoms.

Explanation:

A) Molar mass of AgBr,

MM = 1*MM(Ag) + 1*MM(Br)

= 1*107.9 + 1*79.9

= 187.8 g/mol

mass of AgBr = 0.45 g

mol of AgBr = (mass)/(molar mass)

= 0.45/1.878*10^2

= 2.396*10^-3 mol

B) According to balanced equation,

mol of Na2S2O3 formed = (2/1)* moles of AgBr

= (2/1)*2.396*10^-3

= 4.792*10^-3 mol

Answer: 4.79*10^-3 mol

B) Using: number of mol = M(Na2S2O3)*V(Na2S2O3)

4.792*10^-3 mol = 0.02 M * V

V = 0.240 L

V = 240 mL

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Answer:

Explanation:

it's 109.13 g Ag2S2O3 . i have it when i was in school :)

Answer:

I think the answer is Temperature but i don't know your options so I'm just going off of my test

Explanation:

Answer: 3 ,2, 6

Explanation:

3 Cu(NO3)2 + 2 K3PO4 → Cu3(PO4)2 + 6 KNO3

The partial pressure of Xe will be 1.85 atm.

How to find the partial pressure?

The total pressure is equal to the sum of the partial pressures. The total pressure is equal to the sum of the partial pressures.

Subtract the sum of the known partial pressures of the other components from the overall pressure to determine the partial pressure of one component in a mixture.

Given values: P_{He} = 0.250 atm, P_{Ar} = 0.400 atm, P_{total} = 2.50 atm

To Find: P_{Xe} = ?

Solution: Calculate the total pressure, then deduct the sum from the partial pressures of helium and argon.

P_{He} + P_{Ar} = 0.250 atm + 0.400 atm = 0.650 atm

P_{Xe} = P_{total} - (P_{He} + P_{Ar}) = 2.50 atm - 0.650 atm

P_{Xe} = 1.85 atm

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Answer:

Magnetism

Explanation:

iron filings are metallic and they can easily be attracted to magnets while sand cannot be attracted to magnets

Answer:

Since pure natural gas (a.k.a. methane) has no smell, utility companies add smelly, sulfur-containing odorants called mercaptans, or thiols, to warn us if anything is amiss with our pipelines. ... Olfactory receptors are present in specialized sensory cells called olfactory sensory neurons, which line our noses

Explanation:

hope this helps have a good rest of your night :) ❤

Answer:

Carbon dioxide

Explanation:

Carbon dioxide gas is used by plants for the preparation of food materials. During this food preparation process, plants take up carbon dioxide from the air and give up oxygen.

Answer:

355.25g

Therefore, the mass of sodium sulfate formed when we start with 200.0 grams of sodium hydroxide and you have excess sulphuric acid is 355.25g.

Explanation:

HOPE ITS HELP;)

I reckon is is the Prophase stage. My reason is that the difference between Interphase and Prophase is actually really obvious. In Interphase, the chromosomes aren't paired up, whereas in Prophase, the chromosomes are beginning to pair up.

1. The structure of a hydrocarbon with four carbons in a row and only single bonds:

H   H   H   H

|    |    |    |C---C---C---C

2. The structure with three carbons in a row and one carbon coming off the middle carbon:

H   H   H

|    |    |C---C---C

   |    C

3. Assigning polar, nonpolar, or ionic bond for the following pairs:

a) Na-O: Ionic bondb) H-O: Polar bond

c) Li-P: Polar bondd) Si-O: Polar bond

e) K-H: Polar bondf) S-S: Nonpolar bond

g) I-Cl: Polar bondh) P-Cl: Polar bond

i) F-F: Nonpolar bondj) Gd-O: Ionic bond

4. Calculating the number of neutrons in the given isotopes:

a) C-14: Number of neutrons = Mass number - Atomic number = 14 - 6 = 8 neutronsb) Mg-25: Number of neutrons = Mass number - Atomic number = 25 - 12 = 13 neutrons

c) Au-197: Number of neutrons = Mass number - Atomic number = 197 - 79 = 118 neutronsd) Cu-61: Number of neutrons = Mass number - Atomic number = 61 - 29 = 32 neutrons

e) O-17: Number of neutrons = Mass number - Atomic number = 17 - 8 = 9 neutrons

5. Symbols for the following elements:

a) Silver: Agb) Chlorine: Cl

c) Sodium: Nad) Sulfur: S

6. Identifying the following elements as metal or nonmetal:

a) Ca: Metal

b) F: Nonmetalc) Ti: Metal

d) Os: Metal

7. Atomic numbers for the following elements:

a) Kr: 36b) C: 6

c) S: 16d) Sr: 38

8. Information for the elements Ga and Sb:

a) Ga (Gallium)

  - Atomic number: 31   - Period: 4

  - Group number: 13   - Classification: Metal

b) Sb (Antimony)

  - Atomic number: 51   - Period: 5

  - Group number: 15   - Classification: Metalloid

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nitrogen and chloro fluro carbon gas is not an example of a naturally occurring greenhouse gas

Water vapour, carbon dioxide, methane, nitrous oxide, and ozone are examples of naturally occurring greenhouse gases. Hydro-fluorocarbons (HFCs), perfluorocarbons (PFCs), and sulphur hexafluoride (SF6) are examples of artificial greenhouse gases that are produced via a number of industrial operations. Carbon dioxide, methane, ozone, nitrous oxide, chlorofluorocarbons, and water vapour are some examples of greenhouse gases. The gas that is not a greenhouse gas is therefore nitrogen. The different greenhouse gases include nitrous oxide, water vapour, ozone, chlorofluorocarbons, methane, and chlorofluorocarbons. Infrared light cannot pass through oxygen or nitrogen, hence they are not considered greenhouse gases. These molecules are invisible because stretching one of them has no effect on the electric field. These symmetric molecules are composed of two identical atoms whose electric fields simply cancel one another out.

which gas is not an example of a naturally occurring greenhouse gas?

1. nitrogen

2.cholrofluoro carbons

3. oxygen

4. carbondioxide

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Answer:

13 moles of oxygen

Explanation:

A mole of a substance is the unit of measuring the number of particles within a chemical substance.

The given compound is:

      Ca₅ (PO₄)₃OH

This is a mole of   Ca₅ (PO₄)₃OH

  In this compound we have:

  5 moles of Ca

  3 mole of P

   13 mole of O

   1 mole of H

So,

  In 1 mole of  Ca₅ (PO₄)₃OH, we have 13 moles of oxygen