Calculate empirical formula for each compound 0.2144 g N and 0.1224 g O

Nowadays, oceans are much warmer than the previously one. The oceans are heating very fastly nowadays due to the change in a climate. When ocean is warmer, it will rise the sea levels.

When the ocean is warmer or the water is heated, it takes up more space. Due to this, rise in the sea levels are occurred. In addition to this, warming of oceans causes faster melting of ice sheets in the ocean, which rises the sea level even more. Rising sea level causes more flooding, intense and long lasting tropical storms.

Therefore, warmer ocean water rises the sea level. Hence, the first option is correct.

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Answer:

It will rise up

Explanation:

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Thickness of the fail in millimeter is 0.051mm

Thickness is the quality or state of being thick

Here given data is

aluminum(Al) =  24cm by 31cm

Mass =10.35g

Density = 2.70gcm³

We have to find the thickness of the fail in millimeter = ?

So the formula is

thickness = Volume/surface area

So first we have to calculate volume

Volume = mass/density

Volume = 10.35g/ 2.70gcm³

Volume = 3.83

Then the area of foil is

Area = 24cm×31cm

Area = 744cm²

Thickness = volume/area

Thickness = 3.83/744cm²

Thickness = 0.0051cm = 0.051mm

Thickness of the fail in millimeter is 0.051mm

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The volume of a 0.100 M KMnO4 solution required to completely react with 2.05 g of Zn.193 ml.

Molar attention is a degree of awareness of a chemical species, specifically of a solute in a solution, in phrases of amount of substance consistent with the unit extent of solution. In chemistry, the maximum typically used unit for molarity is the variety of moles according to liter, having the unit symbol mol/L or mol/dm³ in SI unit.

Molarity is the range of moles of solute in line with the liter of answer. for instance, in case you dissolve table salt in water, salt is the solute, and water is the solution. One mole of sodium chloride weighs fifty-eight.44 grams. if you dissolve 58.44 grams of NaCl in one liter of water, you have got a one-molar solution, abbreviated as 1M.

Molarity of KMnO₄ = number of moles/vol of solution in L

            0.100 M     =  0.01928 / volume

volume = 0.1928 L = 192.8 ml

          = 193 ml ( 3 significant figures)

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Earth's rotation or Earth's spin is the rotation of planet Earth around its own axis, as well as changes in the orientation of the rotation axis in space. Earth rotates eastward, in prograde motion. As viewed from the northern polar star Polaris, Earth turns counterclockwise.

The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is the point in the Northern Hemisphere where Earth's axis of rotation meets its surface. This point is distinct from Earth's North Magnetic Pole. The South Pole is the other point where Earth's axis of rotation intersects its surface, in Antarctica.

Earth rotates once in about 24 hours with respect to the Sun, but once every 23 hours, 56 minutes and 4 seconds with respect to other distant stars (see below). Earth's rotation is slowing slightly with time; thus, a day was shorter in the past. This is due to the tidal effects the Moon has on Earth's rotation. Atomic clocks show that a modern day is longer by about 1.7 milliseconds than a century ago,[1] slowly increasing the rate at which UTC is adjusted by leap seconds. Analysis of historical astronomical records shows a slowing trend; the length of a day increased about 2.3 milliseconds per century since the 8th century BCE.[2]

Scientists reported that in 2020 Earth had started spinning faster, after consistently spinning slower than 86,400 seconds per day in the decades before. On June 29, 2022, Earth's spin was completed in 1.59 milliseconds under 24 hours, setting a new record.[3] Because of that trend, engineers worldwide are discussing a 'negative leap second' and other possible timekeeping measures. [4]

This increase in speed is thought to be due to various factors, including the complex motion of its molten core, oceans, and atmosphere, the effect of celestial bodies such as the Moon, and possibly climate change, which is causing the ice at Earth's poles to melt. The masses of ice account for the Earth's shape being that of an oblate spheroid, bulging around the equator. When these masses are reduced, the poles rebound from the loss of weight, and Earth becomes more spherical, which has the effect of bringing mass closer to its centre of gravity. Conservation of angular momentum dictates that it spins faster, like a spinning ice skater drawing their arms in, causing them to spin faster.

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The electron pair in the 1s orbital satisfies the exclusion principle because they have opposite spins, or spin quantum numbers that are +1/2 and -1/2, which are different from each other. Compared to electrons in the 1s orbital, those in the 2s level have a different quantum number.

According to Pauli's Exclusion Principle, no two electrons in the same atom can have values for all four of their quantum numbers that are exactly the same, put  alternatively. There can never be more than two electrons in a single orbital, and they must also have opposing spins.

According to the Pauli exclusion, no two electrons can have the exact same set of quantum numbers.

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The positive charges in the two nuclei start to repel one another as the atoms get closer to one another, which raises the potential energy. The distance at which the lowest potential energy is attained determines the bond length.

The internuclear distance at which the potential energy minimum occurs dictates the bond length. The equilibrium bond length is a more appropriate term since it reflects the distance at which the two atoms bounce as a result of thermal motion. In general, stronger bonds are formed when bonds are shorter.

When atoms are bound to other atoms, the majority of them achieve a lower potential energy. At this distance, the system's potential energy is supposedly equal to zero.

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Answer:

Anaphase/Telophase

Explanation:

Anaphase is the phase where the cell is dividing the chromosomes and organelles. Telophase is a more of a moment in the process of replication than a definable "phase"

Answer:

.,....................k

In noncyclic photophosphorylation, electrons flow in a one-way path from water to NADP⁺.

Photophosphorylation is the conversion of ADP to ATP by using the sunlight. the water molecules is split into the hydrogen and the oxygen this whole process is known as photolysis. In noncyclic photophosphorylation, electrons flow in a one-way path from water to NADP⁺ known as hill reaction. The process of cooperative production of energy is called as non cyclic photophosphorylation. The proton produces by the splitting of water molecule is combine with electron reduces the NDAP to NDAPH₂.

Thus, In noncyclic photophosphorylation, electrons flow in a one-way path from water to NADP⁺.

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The control test tubes had substrates added but no enzymes and they are test tubes 1, 3, 5, and 7.

The control in an experiment is that variable or quantity to which no change has been applied.

The control in an experiment does not receive the treatment given to the study group or they may only receive a blank or a placebo.

Considering the given  experiment to investigate the influence of temperature on enzyme function:

The control test tubes are those test tubes to which substrates were added but no enzymes were added.

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Complete question:

A student designs an experiment to investigate the influence of temperature on enzyme function. The student's plan is presented in Table 1. Which test tubes are controls in the experiment?

Answer:

Hydrogen and helium are by far the most abundant elements found in the Sun, making up about 98 percent of its mass,

1) Neurons transmit information in one direction only. it is true

2) Sensory neuron - interneurons - motor neuron.

3) sensory neuron.

4) motor neuron

5) motor neuron.

Neurons transmit information in one direction only.

Sensory receptors pick up on senses from outside the body. To respond to the sense, path does the information follow as:

Sensory neuron - interneurons - motor neuron.

neuron carries signals from the hand to the spinal cord is  sensory neuron.

neuron carries signals in the body around the spinal cord is moto neuron.

neuron carries signals from the spinal cord to the hand is motor neuron.

Thus, 1) Neurons transmit information in one direction only. it is true

2) Sensory neuron - interneurons - motor neuron.

3) sensory neuron.

4) motor neuron

5) motor neuron.

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Explanation:

explain how the electron was discovered

Since the charge is evenly distributed between the two spheres, each sphere will have a charge of +10 μC. Therefore, the charge on one of the spheres is +10 μC.

The distribution of charges in spherical conductors refers to the way in which electric charges are distributed on the surface of a conductor that has a spherical shape.

When a conductor is charged, the charges distribute themselves over its surface in such a way that the electric field within the conductor is zero.

The spheres are connected with a wire and allowed to come to the same charge, which means that the total charge is evenly distributed between the two spheres.

The total charge is (-10 μC) + (+30 μC) = +20 μC. Since the charge is evenly distributed between the two spheres, each sphere will have a charge of +10 μC. Therefore, the charge on one of the spheres is +10 μC.

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Your question is incomplete. But your complete question is as follows:

A student is designing an investigation of the distribution of charges in conductors. She will use two conducting spheres mounted on insulating stands in the investigation. The conducting spheres are shown.

One has a charge of -10 μC and the other has a charge of +30 μ C. They are connected with a wire and allowed to come to the same charge.

What is the charge on one of the spheres?

a local humane society houses 300 animals.the ratio of cats to all animals is 7 : 15

The molarity of the solution in beaker C is 0.028 M.

The maximum not unusual manner to explicitly answer concentration is molarity (M), that's described as the amount of solute in moles divided with the aid of the extent of solution in liters: M = moles of solute/liters of solution. a solution this is 1.00 molar (written 1.00 M) incorporates 1.00 mole of solute for each liter of solution

Given ;

V = 0.1 L

M=0.02 M

V₂ = 200 cm³ = 0.2 L

M = 0.03 M

M₁V₁ + M₂V₂ = MV

V = M₁V₁ + M₂V₂ / M

  = 0.02*0.1+0.03*0.2*2/0.5

= 0.028 M

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Answer:

Model B (in image) would the best representation of aluminum chloride.

Explanation:

It's the only model the has three chlorine atoms and one aluminum atom.

Additionally, Cl can only bond once, so it can't be bonded to multiple different atoms. Also, Al needs to have more than one bond to achieve the octet rule.

The equation of the reaction is written as; [tex]4Al(s) + 3O_{2} (g) ---- > 2Al_{2} O_{3} (s)[/tex]

It is common to see that in science, we have the combination of two substances and as the substances are combined there is a cleavage of the bonds that holds the molecules of the substances together and then new bonds are formed as the molecules are recombined in the products.

In this case we want to see the reaction between oxygen and aluminum. Now the word equation is aluminum + oxygen -----> aluminum oxide. The reaction equation would show the actual atoms that combined.

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21.6 g/mol  is the molar mass of this compound.

p=175 Torr

v= 1

r=0.82

t= 125 °C= 398 K

density= mass/volume

mass=density × 1

mass=1.14 g/L ×1

mass=1.14 g

PV=nRT

n=PV/RT

n=175×1÷0.82×398

n=0.53 mol

moles= given mass/molar mass

molar mass= given mass/moles

molar mass=1.14 /0.53

molar mass=21.6

Mass per mole is a definition of molar mass. In other terms, molar mass is the total mass of all the atoms in a substance that makes up a mole. It is measured in gram-per-mole units.

For elements or molecules, molar mass is displayed. The molar mass is simply the element's mass represented in atomic mass units in the case of single elements or individual atoms. To put it another way, an atom's atomic mass and molar mass are exactly equal. Molar mass can be used to determine a particle's identification because it is equivalent to atomic mass for individual atoms.

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Thomson's model was "wrong," as Rutherford demonstrated in 1911: the distribution of positive and negative particles was not uniform. Rutherford demonstrated that the atom's tiny, heavy, positively charged nucleus is present.

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The mass in grams of  23.0 L of propane vapor at  STP is 22.968 g.

Given data :

So the mass of 23 L of propane is  44×0.522 = 22.968 g.

Therefore, 23 liters of propane contain 22.968 g of propane at STP.

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Specialized brown fat cells take advantage of oxidative phosphorylation to generate heat as they contain a carrier protein that dissipates the proton gradient across the inner mitochondrial membrane.

oxidative phosphorylation is when in mitochondrion the proton gradient does is the production of ATP from ADP. This depends on the oxidative reaction happening in the mitochondria. During  oxidative phosphorylation electrons  from NADH and FADH₂ combine with oxygen and then releases the energy from the oxidation or reduction reaction that is used to synthesis of ATP from ADP

Thus, Specialized brown fat cells take advantage of oxidative phosphorylation to generate heat as they contain a carrier protein that dissipates the proton gradient across the inner mitochondrial membrane.

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1022.7 g of NaCl are needed to make 3500 ml of 5M solution

What is molarity?

It is defined as the total number of moles of solute per litre of solution.

M = n / V

where

M = molarity ( 5M )

n = no of moles

V = volume ( in litres)

For volume in mL

M = n * 1000 / V

As we know, n = w / M.M

where

n = no of moles

w = given mass ?

M.M = molar mass (58.44)

Substituting all the formulas:

M = n / V

= (w / M.M ) * (1000/ V in mL)

w = (M * M.M * V ) / 1000

= ( 5 * 58.44 * 3500 )/ 1000

= 1022.7 g

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Here the heat is transferred from the hot body to the colder body thus using the calorimetric equation for each copper block, the final temperature of the system is obtained as 61.6 °C.

Calorimetry is an analytical tool used to determine the heat energy absorbed or released by the system.  The expression relating the heat energy q, mass m and the specific heat capacity c and temperature difference ΔT is written as follows.

q = mc ΔT.

It is given the heat capacity of copper is 0.385 J/°C g. The final temperature for both blocks will be equal and let it be x°C. Now the heat energy of the two blocks are equated as follows:

32.5 g × 0.385  (68.7 - x°C ) = 43.7 g × 0.385  ( x - 35.3°C )

2232.7 - 32.5 x = 43.7 x - 1542

     690.7 = 11.2 x

      x = 61.66 °C .

Hence, the final temperature of the system is 61.66 °C.

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The balanced chemical equations are as follow:

C2H4 + 3O2 ------- 2CO2 + 2H2O

A chemical equation is said to be balanced if the number of atoms or molecules of elements on reactant side is equal to the number of atoms or molecules of elements on product side.

This is based on the law of conservation of mass which says that the mass neither be created nor

be destroyed but it transferred from one form to another form.

The chemical equation is

C2H4 + 3O2 ------- CO2 + H2O

Since, the number of atoms of carbon on reactant side is 2 but on product side, it is 1. So, multiply CO2 by 2. It is balanced.

The number of atoms of Oxygen on reactant side is 2 but on product side, it is 5. So, multiply O2 by 3. It is balanced.

The number of atoms of Hydrogen on reactant side is 4 but on product side, it is 2. So, multiply H2O by 2. It is balanced.

Thus, we concluded that the balanced chemical equations are as follow:

C2H4 + 3O2 ------- 2CO2 + 2H2O

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Answer:

410-52=360

3.054+1.16=4.21

Explanation:

The chemical equation similar to a mathematical equation as equal sign means both sides . The differential equation is used as a model a natural phenomenon.

The chemical equations and mathematical equation have lot of common things. The balancing of equation and algebraic equation have similarities. we use differential equation is used as a model  a natural phenomenon. chemical equation like the math's equation must be balanced. some basic concepts of math's are used in chemistry to balance equation.

Thus, The chemical equation similar to a mathematical equation as equal sign means both sides . The differential equation is used as a model a natural phenomenon.

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Answer:

The chemical equation similar to a mathematical equation as equal sign means both sides.

Explanation:

Chemical equations and mathematical equations have a lot in common. The equal sign in a math equation means that both sides, however they're written, are equivalent expressions of the same thing: 2(3) - 4 = 5(2) - 8 ← Try it for yourself. The arrow or arrows in a chemical equation mean the same thing.

The rms speed of O₂ and He molecules at 371 K are 384.8m/s and 192.4m/s respectively.

This refers to the way to calculate a single velocity value for the particles. The average velocity of a gas particle can be calculated using the root mean square velocity formula.

rms speed =[tex]\sqrt{3RTM}[/tex]

Where,

Root Mean Square speed, rms speed

Universal gas Constant,R =8.314 J/(mol⋅K)

Absolute Temperature,T =371 K

Molar mass of substance,M

M of  O₂= 2*8

            =16

M of  He = 2*2

             =  4

rms speed O₂ =[tex]\sqrt{3RTM}[/tex]

                      =          [tex]\sqrt{(3*8.314* 371*16)}[/tex]

                       =384.8m/s

rms speed He =[tex]\sqrt{3*8.314 *371*4}[/tex]

                       =192.4m/s

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His hypothesis was that b) maggots come from eggs laid by flies.

Redii demonstrated that maggots do not spontaneously generate from rotting meat. He placed three jars containing rotting meat, each covered with different kinds of material. One jar was covered with a fine cloth, one with gauze, and one with cork.

Flies were observed landing on all three jars of meat, but after eight days, only the jar covered with the gauze had maggots on the meat. Redii observed the maggots on the meat and concluded that they had not spontaneously generated, but had come from the eggs of the flies that had landed on the meat.

From this, he concluded that maggots only form on meat that is exposed to the air, and not on meat that is sealed in a jar. This showed that it was not "spontaneous generation" that was creating the maggots, but rather that they were being laid by flies.

This is because he put meat in different locations and found that maggots only appeared where there were flies.

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Answer: The bond length and atomic size of boron in BCl3 are smaller than in AlCl3 so this leads to interatomic repulsion so BCl3 could not accept another BCl3 via a dative bond because it leads to more repulsion and finally breaking of dimer.

Answer:

[tex]C_{5} H_{12} + 8O_{2} \\\ - > 5CO_{2} + 6H_{2}O[/tex]

Explanation:

Blank 1: remain blank or put 1

Blank 2: 8

Blank 3: 5

Blank 4: 6

Purpose is to have the same amount of each element on both side of equation

To calculate the atoms of an element in a given molecule, we need to multiply stoichiometry by the number that is written on the foot of that element. The balanced equation is

C[tex]_5[/tex]H[tex]_12[/tex]+O[tex]_2[/tex][tex]\rightarrow[/tex]5CO[tex]_2[/tex]+6H[tex]_2[/tex]O

Balanced equation is the one in which the total number of atoms of a species on reactant side is equal to the total number of atoms on product side.

The unbalanced equation is

C[tex]_5[/tex]H[tex]_12[/tex]+O[tex]_2[/tex][tex]\rightarrow[/tex]CO[tex]_2[/tex]+H[tex]_2[/tex]O

The number of atoms of carbon on reactant side is 5 and on product side it is 1. so to balance it we need to multiply CO[tex]_2[/tex] by 5.

C[tex]_5[/tex]H[tex]_12[/tex]+O[tex]_2[/tex][tex]\rightarrow[/tex]5CO[tex]_2[/tex]+H[tex]_2[/tex]O

The hydrogen atom on reactant side is 12 while on product side it is 2, so multiply H[tex]_2[/tex]O by 6.

C[tex]_5[/tex]H[tex]_12[/tex]+O[tex]_2[/tex][tex]\rightarrow[/tex]5CO[tex]_2[/tex]+6H[tex]_2[/tex]O

To multiply oxygen we need to multiply O[tex]_2[/tex] by 8.

C[tex]_5[/tex]H[tex]_12[/tex]+8O[tex]_2[/tex][tex]\rightarrow[/tex]5CO[tex]_2[/tex]+6H[tex]_2[/tex]O

Therefore, the balanced equation is

C[tex]_5[/tex]H[tex]_12[/tex]+O[tex]_2[/tex][tex]\rightarrow[/tex]5CO[tex]_2[/tex]+6H[tex]_2[/tex]O

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