so3so3 draw the molecule by placing atoms on the grid and connecting them with bonds. include all nonbonding electrons. show the formal charges of all atoms in the correct structure.

Answer:

Just search up the questiona and go through each of the google answers that pull up??

Explanation:

Answer:

Just search human causing the sixth mass extinction

Answer:

D. Thermal conduction is blocked by the flip-flops.

Explanation:

Convection is a process of heat transfer which involves fluids( liquid or gas). This however rules convection out of the answer.

Radiation involves heat transfer from the sun to bodies on earth.

Conduction involves heat transfer between two solid bodies. Hot beach sand and flip-flops are solid bodies which validates thermal(heat) conduction.

Answer:

The answer is

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume of copper = 14.75 cm³

Density = 8.96 g/cm³

The mass is

mass = 8.96 × 14.75

We have the final answer as

Hope this helps you

Answer:

chill

Explanation:

the maximum number of electrons an atom can have with the sublevel designation is 2 electrons.

to calculate the maximum number of electrons an atom can have with the sublevel designation can be calculate as below:

as we know that,

The energy level of each of an atom with the given sublevel designations determines the maximum number of electrons the atom can occupy.

(a) For n = 2, I = 1, ml = 0,

The energy level is calculated as;

Energy level = 2(1) + 1 = 3 sub-orbtials

= -1  0  1  : ( 2 electrons each)

Thus, the maximum number of electrons an atom can have with the sublevel designation is 2 electrons.

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Answer:

In the context of transaction processing, the acronym ACID refers to the four key properties of a transaction: atomicity, consistency, isolation, and durability. Atomicity. All changes to data are performed as if they are a single operation

Answer:

don't you have any options

Answer:

Temperature will revert to room temperature after the substance reacts fully. Heat energy flows between the chemical bonds of the added substance and water to the surroundings (elsewhere in the water, the beaker, a student's hand that touches the beaker).

Explanation:

Hot packs and cold packs eventually return to room temperature because of thermal equilibrium

Temperature is the degree of hotness or coldness of a body. We have to note that bodies often tend to attain thermal equilibrium with the surroundings. Hence heat flows from or to the body as required.

Hence, the need to attain thermal equilibrium with the  environment is the reason why hot packs and cold packs eventually return to room temperature.

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Answer:

b atoms

Explanation:

everything is made up of atoms

Answer:

Measuring distances to stars through stellar parallax. Measuring distances to stars through the moving cluster method. Astronomers measure the temperature of a star by looking at the star's color and its spectrum. The apparent brightness of a star tells how bright it seems to us

Explanation:

Answer:

Analyze the Characteristics of a Star

Explanation:

Surface Temperature

First, you want to determine the color of the star - this can determine the heat and age of the star.

Second, you want to measure the spectrum and get the spectral type.

Chemical Composition

Determine which lines are present in the spectrum.

Luminosity

Measure the apparent brightness and compensate for distance

Radical Velocity

Measure the Doppler shift in the spectrum.

Rotation

Measure the width of spectral lines.

Mass

Measure the period and radial velocity curves of spectroscopic binary stars.

Diameter

1. Measure the way a star’s light is blocked by the Moon.

2. Measure the light curves and Doppler shifts for eclipsing binary stars.

The volume of the cube will be:

The volume of a cube is given by:

Volume = \(S^3\) where S refers to the three sides of the cube.

In this case, the sides are 27 cm x 21 cm x 4.4 cm

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a. The balanced equation for the reaction of zinc metal with hydrochloric acid (HCl) is:

Zn + 2HCl → ZnCl2 + H2

b. We can use stoichiometry to calculate the moles of hydrochloric acid (HCl) produced from 3.57 grams of zinc. First, we need to determine the number of moles of zinc using its molar mass:

molar mass of Zn = 65.38 g/mol

moles of Zn = 3.57 g / 65.38 g/mol = 0.0546 mol

From the balanced equation, we know that for every mole of zinc, two moles of hydrochloric acid are consumed. Therefore, the number of moles of hydrochloric acid produced is:

moles of HCl = 2 x 0.0546 mol = 0.1092 mol

So, 3.57 grams of zinc would produce 0.1092 moles of hydrochloric acid.

In the Lewis structure for selenium tetrafluoride (SeF4), the central atom is selenium (Se). It has six valence electrons, and each fluorine (F) atom brings one valence electron, for a total of 24 valence electrons. So the answer is there are two lone pairs of electrons on the Se atom in the Lewis structure for SeF4.

To form the Lewis structure, we start by connecting the Se atom to four F atoms with single bonds, which uses up eight electrons. Then, we place the remaining 16 electrons as lone pairs around the F atoms. This gives each F atom a full octet (eight valence electrons), but leaves the Se atom with only four electrons around it. Therefore, there are two lone pairs of electrons on the Se atom in the Lewis structure for SeF4.

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the mole fraction of \(CH_4\) in the original mixture is 0.73 =  73%.

Total pressure of the mixture = 0.53 atm

Total pressure of the product gases = 2.2 atm

The combustion equation for \(CH_4\) is given as :

\(CH_4\)(g) + \(2O_2\)(g) -> \(CO_2\)(g) + \(2H_2O\)(g)

We then apply  Dalton's law of partial pressures, and write

Pressure of \(CO_2\) + Pressure of \(H_2O\) = Pressure of product

x + Pressure of \(H_2O\) = Pressure of product

x + Pressure of \(H_2O\) = 2.2 atm

the mole fraction and the partial pressure relationship is :

2x = Pressure of \(H_2O\)

x + 2x = 2.2 atm

3x = 2.2 atm

x = 2.2 atm / 3

x = 0.73

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Answer:

V = 44.85 L

Explanation:

Given data:

Volume of H₂ = ?

Number of moles of H₂ = 2.0 mol

Given temperature = 273.15 K

Given pressure = 1 atm

Solution:

Formula:

PV = nRT

P = Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

By putting values,

1 atm × V = 2.0 mol × 0.0821 atm.L/ mol.K  × 273.15 K

V = 44.85 atm.L / 1 atm

V = 44.85 L

Answer:

The answer is

Explanation:

To find the density of the sphere we use the formula

To find the density in g/cm³ first convert the mass into grams and the volume into cm³

For the mass we have

155 lb = 70306.82 g

For the volume

4.2 ft³ = 118930.76 cm³

Substitute the values into the above formula

That's

We have the final answer as

Hope this helps you

Answer:

2

Explanation:

Answer:

your answer gonna be 20 miles

Answer:

I assume you mean as in elements

A metal "A metal is a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Metals are typically malleable or ductile." (wiki)

a non-metal "In chemistry, a nonmetal is a chemical element that mostly lacks the characteristics of a metal. Physically, a nonmetal tends to have a relatively low melting point, boiling point, and density. A nonmetal is typically brittle when solid and usually has poor thermal conductivity and electrical conductivity." (wiki)

Explanation:

Answer:

On the periodic table, the metals are usually on the left and middle side and nonmetals on the right side. nonmetals tend to be either a liquid or gas at room temperature and metals are usually solids at room temperature.

Explanation:

The light bulb will take approximately 2.9 x 10² seconds to consume 2.30 x 10² joules of energy.

To calculate the time it takes for the light bulb to consume a given amount of energy, we can use the formula:

Time (in seconds) = Energy Consumed / Energy Consumption Rate

Given that the energy consumption rate of the light bulb is 80.0 joules per second, and we want to find the time it takes for the light bulb to consume 2.30 x 10² joules of energy, we can substitute these values into the formula:

Time = (2.30 x 10² joules) / (80.0 joules per second)

Time = 2.875 x 10² seconds

Time ≈ 2.9 x 10² seconds

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The chemist has 642.4 millimoles of barium acetate in the solution.

To calculate the millimoles of barium acetate (Ba(C₂H₃O₂)₂) in the solution, we can use the formula:

moles = molarity × volume (in liters)

First, let's convert the volume from milliliters (mL) to liters (L):

440.0 mL ÷ 1000 = 0.440 L

Now we can substitute the given values into the formula:

moles = 1.46 M × 0.440 L

moles = 0.6424 mol (rounded to 4 decimal places)

To convert the moles to millimoles, we multiply by 1000:

millimoles = 0.6424 mol × 1000

millimoles = 642.4 mmol (rounded to 3 significant digits)

Therefore, the chemist has 642.4 millimoles of barium acetate in the solution.

It's important to note that the molarity (M) represents the number of moles of solute per liter of solution. By multiplying the molarity by the volume in liters, we can find the number of moles of solute. To convert moles to millimoles, we multiply by 1000. The result represents the millimoles of barium acetate present in the given volume of solution.

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Answer:

B

Explanation:

Collisions

Answer:

Collisions

Explanation:

The questions talking about molecules so particles are moving around. Hope this helps

Answer:

_2Mg + _O2 --≥2MgO this is balanced

Answer:

When light reaches a mirror, it reflects off the surface of the mirror: the incident ray is the light going towards the mirror the reflected ray is the light coming away from the mirror

Explanation:

have a nice day.

Answer:

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

\(volume = \frac{mass}{density} \\\)

From the question we have

\(volume = \frac{112}{13.6} \\ = 8.23529\)

We have the final answer as

Hope this helps you

One method that delivers nonsynchronous energy to the myocardium is defibrillation.

A high-energy electric shock is administered to the heart during defibrillation, a medical operation used to treat life-threatening arrhythmias such as ventricular fibrillation or pulseless ventricular tachycardia and return the heart to a normal rhythm.

A regulated electric shock to the heart is given during defibrillation using an external defibrillator or an internal defibrillator (implanted cardioverter-defibrillator). The goal of the shock is to depolarize the myocardium and stop any aberrant electrical activity so that the heart can resume its regular rhythm.

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If an atom from the first two periods had 6 electrons in its valence shell, these electrons would be distributed in the 2s and 2p orbitals.

The 2s orbital can hold a maximum of 2 electrons, while the 2p orbital can hold up to 6 electrons. The 2p orbital has three suborbitals (2px, 2py, and 2pz), each of which can hold up to 2 electrons. Therefore, the 6 valence electrons would fill up the 2s orbital and the 2p suborbitals (2px, 2py, and 2pz) with two electrons in each suborbital. This configuration corresponds to the element carbon (atomic number 6), which has 2 electrons in the 2s orbital and 4 electrons in the 2p suborbitals (2px, 2py, and 2pz).
In an atom from the first two periods with 6 electrons in its valence shell, the electrons would be distributed in the 1s, 2s, and 2p orbitals. In the first period, there is only the 1s orbital, which can hold a maximum of 2 electrons. In the second period, there are 2s and 2p orbitals. The 2s orbital can hold 2 electrons, while the 2p orbital can accommodate 6 electrons. Since there are 6 valence electrons, 2 will fill the 2s orbital, and the remaining 4 will be in the 2p orbital, resulting in a 2s^2 2p^4 electron configuration.

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Answer:

8306.76

Explanation:

you just calcuate 8.12 x 1023 and that will give you the answer

Approximately 148.59 grams of carbon dioxide could be made.The remaining reactant, since \(O_2\)is the limiting reactant, all the CO will not be completely consumed. There would be no CO leftover as it is completely consumed in the reaction.

To determine the grams of carbon dioxide produced, we need to identify the limiting reactant first. The balanced chemical equation for the reaction is:

2 CO +\(O_2\) -> 2 \(CO_2\)

To find the limiting reactant, we compare the number of moles of each reactant and determine which one is present in a lower amount relative to the stoichiometry of the reaction.

First, we convert the given volumes of gases to moles using the ideal gas law equation:

n = PV / RT

where:

n = number of moles

P = pressure

V = volume

R = ideal gas constant

T = temperature

Assuming the reaction takes place at standard temperature and pressure (STP), which is 273.15 K and 1 atm, we can use the values to convert the volumes to moles:

For carbon monoxide (CO):

n(CO) = (75.3 L) / (22.414 L/mol) = 3.36 moles

For oxygen (O2):

n(O2) = (38.0 L) / (22.414 L/mol) = 1.69 moles

According to the balanced equation, the stoichiometry of the reaction is 2:1 for CO to \(O_2\)This means that for every 2 moles of CO, we need 1 mole of \(O_2\). In this case, the ratio of moles is 3.36:1.69, which shows an excess of CO.

To find the limiting reactant, we compare the mole ratio to the stoichiometry ratio. Since there is a surplus of CO, it is the excess reactant, and\(O_2\)is the limiting reactant.

To determine the amount of carbon dioxide produced, we use the stoichiometry of the reaction. From the balanced equation, we know that for every 2 moles of CO, 2 moles of CO2 are produced.

Since\(O_2\) is the limiting reactant, we use its moles to calculate the moles of \(Co_2\)produced:

n(\(CO_2\)) = 2 * n(\(O_2\)) = 2 * 1.69 moles = 3.38 moles

Finally, we convert the moles of\(CO_2\) to grams using the molar mass of carbon dioxide, which is 44.01 g/mol:

mass(\(CO_2\)) = n(\(CO_2\)) * molar mass(\(CO_2\) = 3.38 moles * 44.01 g/mol ≈ 148.59 grams

Therefore, approximately 148.59 grams of carbon dioxide could be made.

As for the remaining reactant, since \(O_2\)s the limiting reactant, all the CO will not be completely consumed. To determine the amount of CO leftover, we subtract the moles of CO used from the initial moles of CO:

Remaining moles of CO = Initial moles of CO - Moles of CO used

Remaining moles of CO = 3.36 moles - 2 * 1.69 moles ≈ 0 moles

Thus, there would be no CO leftover as it is completely consumed in the reaction.

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Use of a more polar eluent can impact the separation and elution behavior of compounds in chromatography, favoring polar compounds and potentially affecting the resolution and selectivity of the analysis.

If only the more polar eluent was used in the experiment, several outcomes could be expected:

Increased Solubility: The more polar eluent would have higher solubility for polar compounds, enhancing their dissolution and movement through the chromatographic system. This would result in faster elution of polar compounds and potentially better separation between different components in the sample.

Reduced Retention: The more polar eluent would have a stronger interaction with the stationary phase, leading to decreased retention time for non-polar or weakly polar compounds. This could cause these compounds to elute quickly without adequate separation, resulting in poor resolution of the target analytes.

Decreased Selectivity: Since the more polar eluent has a greater affinity for polar compounds, it might not efficiently separate compounds with similar polarities. This could lead to co-elution of compounds or insufficient separation between closely related analytes.

Elution Order Changes: In some cases, the more polar eluent could cause a reversal in the elution order of compounds compared to a less polar eluent. This means that compounds that previously eluted early might now elute later and vice versa, altering the overall chromatographic profile.

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