What is the maximum number of electrons that each of the first three electron orbits can hold, starting from the nucleus?

Answer:

There are three types of DNA Mutations: base substitutions, deletions and insertions. Single base substitutions are called point mutations, recall the point mutation Glu -----> Val which causes sickle-cell disease. Point mutations are the most common type of mutation and there are two types.

The ∆H of solution of NaOH is 46.8 kJ/mol.

First, we need to calculate the amount of heat absorbed by the solution:

q = m × c × ∆T

where q is the heat absorbed (in Joules), m is the mass of the solution (in grams), c is the specific heat capacity of the solution (in J/(g °C)), and ∆T is the change in temperature (in °C).

In this case, the mass of the solution is the sum of the mass of NaOH and the mass of water:

m = 7.59 g + 80.0 g = 87.59 g

The change in temperature is:

∆T = 48.0 °C - 25.0 °C = 23.0 °C

Substituting the values, we get:

q = 87.59 g × 4.184 J/(g °C) × 23.0 °C = 8,878 J

Next, we need to convert the heat absorbed into the enthalpy change of solution (∆H). The enthalpy change of solution is the heat absorbed per mole of solute. The number of moles of NaOH is:

n = m/M

where M is the molar mass of NaOH, which is 40.00 g/mol.

n = 7.59 g / 40.00 g/mol = 0.1898 mol

Therefore, the enthalpy change of solution is:

∆H = q/n = 8,878 J / 0.1898 mol = 46,780 J/mol = 46.78 kJ/mol

The H of a NaOH solution, rounded to three significant numbers, is 46.8 kJ/mol.

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Answer:

sulfide ion

Explanation:

however, when non-metalic elements gain electrons to form anions the end of their name is change to "-ide".foe example, a flourin atom gains one electronto become a flouride ion(F`) and sulfur gains two electrons to become a sulfide ion(s^2)

During the chemiosmosis , ATP is synthesized when H⁺ ions move through a channel in ATP synthase.

The chemiosmosis is the movement of the ions through the semipermeable membrane . The ATP synthesis the free energy which is obtained by the electrons that are passes through the several carriers.  chemiosmosis is the process of the pumping of the protons through the semipermeable membrane to obtained the proton gradient. the energy will be released in the process and results in the ATP synthesis.

Thus, when the  H⁺ ions will move through the channel in the ATP synthase , ATP is synthesized , in the process of the chemiosmosis.

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Answer:

c

Explanation:

Explanation:

rubbing it against your hair

Answer:

C

Explanation:

Hope this helps and have a great day.

12 grams of carbon contains 6.022 x 10^23 atoms.

What is the Avogadro's number?

Avogadro's number gives the number of particles in one mole (or moles) of a substance. These particles can be electrons or molecules or atoms. The value of Avogadro's number is approximately 6.022140857 × 10^23 mol−1.  

12 grams of carbon contains 6.022 x 10^23 atoms, which corresponds to 1 mole of atoms.

Therefore, 12 grams of carbon contains 6.022 x 10^23 atoms.

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To determine the tomato's velocity when it hits the ground, we need more information. Specifically, we need the height from which the tomato was dropped and the tomato mass.

Without these details, it is impossible to calculate velocity accurately. The velocity of an object when it hits the ground depends on factors such as the height of the fall, the mass of the object, and any forces acting on it during the fall (such as air resistance).

If you can provide the necessary information, I can help you calculate the velocity of the tomato when it hits the ground.

Answer:

Wavelength

Explanation:

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Answer:

90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you

12.0 grams of \(Pb(NO_3)_2\) would produce 10.1 grams of \(PbCl_2\) precipitate .

To determine the number of moles of lead(II) chloride (\(PbCl_2\)) precipitate that could be produced from reacting 12.0 grams of lead(II) nitrate (\(Pb(NO_3)_2\)), we need to first write and balance the chemical equation for the reaction between these two compounds:

\(Pb(NO_3)_2 (aq) + 2NaCl (aq) = PbCl_2 (s) + 2NaNO_3 (aq)\)

From the balanced equation, we can see that one mole of \(Pb(NO_3)_2\) reacts with 2 moles of NaCl to produce one mole of \(PbCl_2\).

The molar mass of \(Pb(NO_3)_2\) is:

207.2 g/mol (Pb) + 2(14.0 g/mol) + 6(16.0 g/mol) = 331.2 g/mol

To determine the number of moles of \(Pb(NO_3)_2\) present in 12.0 grams of the compound, we can use the following formula:

moles = mass/molar mass

moles of \(Pb(NO_3)_2\) = 12.0 g / 331.2 g/mol = 0.0362 mol

From the balanced equation, we know that 1 mole of \(Pb(NO_3)_2\) reacts to produce 1 mole of \(PbCl_2\). Therefore, 0.0362 moles of \(Pb(NO_3)_2\) will produce 0.0362 moles of \(PbCl_2\)

The molar mass of \(PbCl_2\) is:

207.2 g/mol (Pb) + 2(35.5 g/mol) = 278.7 g/mol

Therefore, the mass of \(PbCl_2\) that could be produced is:

mass = moles x molar mass = 0.0362 mol x 278.7 g/mol = 10.1 g

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The limiting reactant is iron ore, the theoretical yield of iron metal is 701.344 kg, and the theoretical yield of carbon dioxide is 413.292 kg.

From the equation of the reaction:

\(2 Fe_2O_3(s) + 3 C(s) --- > 4 Fe(s) + 3 CO_2(g)\)

The mole ratio of iron ore to carbon is 2:3.

Mole of 1000 kg of iron ore = 1000000/159.69

                                          = 6,262 moles

Mole of 120 kg carbon = 120000/12

                                 = 10,000 moles

Thus, it appears that the carbon is in excess while the iron ore is limited in availability.

The mole ratio of the iron ore and the iron produced is 1:2. Thus, the equivalent number of moles of iron produced will be:

              6,262 x 2 = 12,524 moles

Mass of 12,524 moles of iron = 12,524 x 56

                                                = 701,344 g or 701.344 kg

Thus, the theoretical yield of iron is 701.344 kg.

The mole ratio of the iron ore and the carbon dioxide produced is 2:3. The equivalent mole of carbon dioxide produced will be:

         6,262 x 3/2 = 9,393 moles

Mass of 9,393 moles carbon dioxide = 9,393 x 44

                                                         = 413,292 or 413.292 kg

The theoretical yield of carbon dioxide is, therefore, 413.292 kg.

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Answer:

Grams to moles: 1 g/16 g/mol = 1/16 mol/g

Moles to grams: 1 mol/16 g/mol = 16 g/mol.

Explanation:

The two possible conversion factors that can be obtained from the molar mass for oxygen (which is approximately 16 g/mol) are:

Grams to moles: 1 g/16 g/mol = 1/16 mol/g

Moles to grams: 1 mol/16 g/mol = 16 g/mol.

The two possible conversion factors that can be obtained from the molar mass for oxygen are 1 mole of O and 1 gram of O.

When using molar mass for oxygen, there are two possible conversion factors:

These conversion factors can be used to convert between moles and grams of oxygen. For example, if you have the molar mass of oxygen (16 grams/mole), you can use the first conversion factor to convert grams to moles by dividing the given mass by the molar mass, or use the second conversion factor to convert moles to grams by multiplying the given number of moles by the molar mass.

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Answer:

all of the above

Explanation:

Answer:

I think the insect would be the one in the second photo reading from left to right

Explanation:

the other insects:

the first of the first photo is a change of what would be the external surface of the insect, it is not the insect itself.

In the third photo, the insect has short legs with little grip, which indicates that it does not climb large areas on top, and finally, the 4 image is of an insect that lives in desert areas and is poorly coordinated in areas of high heat. and sand.

These are the reasons why I chose photo number two reading from left to right

Answer:

I would say that your answer would be the second one.( the red one)

Explanation:

because the legs it has seem like it would grip onto trees fairly well.

Answer:

flourine

Explanation:

Answer:

The type of bond between the Oxygen atom and the hydrogen is Covalent

this is because the 2 electrons are being shared by both hydrogen and oxygen

The type of bond this molecule makes as a whole is called a Hydrogen Bond

A hydrogen bond is formed because of the partial +ve and -ve charge in a molecule

The cause of the partial +ve and -ve charge is the comparatively high electronegativity of oxygen which makes the electron get attracted towards the oxygen atom while the hydrogens try to maintain the maximum distance from the lone pairs due to repulsion

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Answer:

B

Explanation:

Answer:

Explanation:

Answer:

-56.1kJ/mol

Explanation:

The reaction between HCl and NaOH is:

NaOH + HCl → NaCl + H₂O + ΔH

Where ΔH is heat change in  the reaction.

As the temperature of the solution increases, the heat is released and ΔH < 0

The heat released in the reaction is obtained using coffe-cup calorimeter equation:

Q = C×m×ΔT

Where Q is heat

C is specific heat of the solution (4.184J/g°C)

m is mass of solution: Assuming density = 1g/mL, 100mL of solution = 100g

And ΔT is change in temperature (13.4°C)

Replacing:

Q = C×m×ΔT

Q = -4.184J/g°C×100g×13.4

Q = -5606.6J

Now, in the reaction you have:

Moles HCl:

0.050L * (2.2mol/L) = 0.11 moles

Moles NaOH:

0.050L * (2.0mol/L) = 0.1 moles

That means the moles of reaction are 0.1 moles, and heat change in the chemical reaction is:

5606.6J / 0.1 mol = 56066J =

The pOH of the 0.001 M NaOH solution is approximately 3.

To determine the pOH of a solution, we need to know the concentration of hydroxide ions (OH-) in the solution.

In the case of a 0.001 M NaOH solution, we can assume that all of the NaOH dissociates completely in water to form Na+ and OH- ions. Therefore, the concentration of hydroxide ions in the solution is also 0.001 M.

The pOH is calculated using the equation:

pOH = -log[OH-]

Substituting the concentration of hydroxide ions, we have:

pOH = -log(0.001)

Using a calculator, we can evaluate the logarithm:

pOH ≈ 3

Therefore, the pOH of the 0.001 M NaOH solution is approximately 3.

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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 and explanation

we first nee to convert the temperature to Kalvin and te do the clalculation

13.6 + 273.15 =286.75K

we know that P1/T1 = P2/T2

so to find the new temperature we simply say

T2 = P2T1/P1

= (7.9 x286.75)/20.2

= 112.14K

the new temp will be 112.14K

Answer:

yes that is right

Explanation:

Answer: what is the answer im on plato

Explanation:

The substance begins to boil at 2750⁰C, the substance begins to melt at 1500⁰C, the temperature at which the substance is both a liquid and a gas at 2750⁰C, temperature is the substance both a solid and a liquid​ at 1500⁰C.

Heating curves are the graphical correlations between heat added to a substance. When viewed from a cooling perspective, ie. loss of heat, it is the cooling curve.

The gradient of the cooling curve is related to the heat capacity, the thermal conductivity of the substance, and the external temperature. The more heat is required to change the temperature of the substance, the slower it cools, so the smaller the gradient of the curve. The higher the thermal conductivity, the faster heat is transferred, so the faster the substance cools.

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The element that has the following electronic configuration are :

a) the atomic number of selenium is 34. the electronic configuration is given as :

electronic configuration : 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰  4p⁴

b) the atomic number of bromine is 35 . the electronic configuration is given as :

electronic configuration : 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰  4p⁵

c) the atomic number of krypton is 36 . the electronic configuration is given as :

electronic configuration : 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰  4p⁶

d)  the atomic number of francium is 87. the electronic configuration is given as :

electronic configuration : 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰  4p⁶ 4d¹⁰ 5s² 5p⁶ 4f¹⁴ 5d¹⁰ 6p⁶ 7s¹

Thus, The element that has the following electronic configuration are :

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Answer:

3 atoms of Ba

2 x 1 = 2 atoms of Cl

2 x 3 = 6 atoms of O

So, the total number of atoms for each element in 3Ba(ClO3)2 are:

Barium (Ba): 3 atoms

Chlorine (Cl): 2 atoms

Oxygen (O): 6 atoms

Explanation:

As an alternative, the following calculation may be made using the established conversion factor for a length measured in inches and converted to millimeters: 25.4 mm make up one inch.

In the formula atmospheric pressure = mercury density x gravitational acceleration x mercury column height, it can be calculated using mercury. The units of measurement for atmospheric pressure include atm, torr, mm Hg, psi, and Pa, where denotes the density of mercury, h the height of mercury, and PA the pressure at the area above mercury inside the tube (= 0). Pa equals 1 atm at sea level, and h is 76 cm. As a result, 1 atmosphere or 76 cm of mercury in a mercury barometer represents atmospheric pressure.

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Geothermal power plants use the renewable resource of heat from within the Earth to generate electricity is true .

Define geothermal energy.

Deep in the Earth's core, heat is produced that is known as geothermal energy. A clean, sustainable energy source that can be used to generate heat and electricity is geothermal energy.

Rocks, water, gas, and other geological materials are constantly being warmed by heat radiating from the core. Nearby rocks and aquifers underground are heated by magma. Geysers, hot springs, steam vents, submerged hydrothermal vents, and mud pots can all emit hot water. These are all geothermal energy sources.

They can either be directly heated by capturing their heat or by using the steam they produce to produce power. Buildings, parking lots, and sidewalks may all be heated with geothermal energy.

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