oh no! i accidentally knocked over a 2.5 l bottle of concentrated hydrochloric acid, and it broke on the floor in front of my fume hood. fortunately it did not get on me or anyone else. the vapors are very irritating to my eyes and throat. what should i do?:

Answer:

Any base with an ability to dissolve in water are called alkalis. All alkalis are bases, however, not all bases are alkalis.

The ground state configuration of calcium (Ca) is 1s2 2s2 2p6 3s2 3p6 4s2. The ground state configuration is the lowest energy state that an atom or molecule can occupy.

It is the electron configuration of an atom or molecule in its most stable form, corresponding to the minimum energy state. The least energetic and most stable configuration is the ground state configuration. An excited state configuration is a higher energy configuration (it requires energy input to create an excited state). The electrons used for bonding are called valence electrons. The primary quantum number (n), the orbital (s, p, d, or f), and the total number of electrons are used to represent electron configurations. The total number of electrons is expressed as a superscript.

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Answer:

7.92 g/mL.

Explanation:

The following data were obtained from the question:

Mass of Iron = 28.5 g

Volume of water = 45.5 mL

Volume of water + Iron = 49.1 mL.

Density of Iron =.?

Next, we shall determine the volume of the iron. This can be obtained as illustrated below:

Volume of water = 45.5 mL

Volume of water + Iron = 49.1 mL.

Volume of iron =.?

Volume of iron = (Volume of water + Iron) – (volume of water)

Volume of iron = 49.1 – 45.5

Volume of iron = 3.6 mL

Finally, we shall determine the density of iron as follow:

Mass of Iron = 28.5 g

Volume of iron = 3.6 mL

Density of Iron =.?

Density = mass/volume

Density = 28.5/3.6

Density = 7.92 g/mL

Therefore, the density of the iron is 7.92 g/mL

Explanation:

0.24 grams of LiOH are needed to make 100 ml of a 0.1 M solution

Answer:

For CO:

Formal charge of C = 4 - 2 - 6/2 = -1

Formal charge of O = 6 - 2 - 6/2 = +1

2. For CO₂:

Formal charge of C = 4 - 0 - 8/2 = 0

Formal charge of each O = 6 - 4 - 4/2 = 0

3. For CO₃²⁻:

Formal charge of C: 4 - 0 - 8/2 = 0

Formal charge of two O's single-bonded to C = 6 - 6 - 2/2 = -1

Formal charge of the O double-bonded to C = 6 - 4 - 4/2 = 0

Sodium bromide (NaBr) has a molar mass of 102.890 grams per mole.

The weight of one mole of a sample is referred to as the molar mass. Multiply the subscript (number of atoms) by the atomic mass of each component of the molecule to determine its molecular mass, and then add the masses of all the components together.

We first obtain the atomic weights of the individual elements in a periodic table in order to calculate the molar mass of a molecule. Then, we multiply the total number of atoms by each one's atomic mass. The molar mass is obtained by combining all of the atomic masses.

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Answer:

b is ur answer the temputer does increase

Explanation:

Answer:

The net force is 0

Explanation:

because both people on either side are pulling the rope with the same force

Answer: The ratio of mass of sulfur atom to mass of oxygen atom in sulfur dioxide is 1: 1.

Explanation:

Law of constant proportion states that In a chemical substance the elements are always present in definite proportions by mass. This law is also known as 'Law of definite proportions '.

Mass of 1 atom of sulphur = 32 g

Mass of 1 atom of oxygen = 16 g

Mass of 2 atoms of oxygen =\(16g\times 2=32g\)

In formation of \(SO_2\) , 1 atom of sulfur combines with 2 atoms of oxygen and thus the mass ratio will be 32: 32= 1:1 .

Thus the ratio of mass of sulfur atom to mass of oxygen atom in sulfur dioxide is 1: 1.

Magnesium and fluorine atoms will most likely form an ionic bond.

Ionic bonds are formed between elements with a large difference in electronegativity, which is the measure of an atom's ability to attract electrons towards itself. Magnesium and fluorine have a difference in electronegativity of 2.13, which is large enough to form an ionic bond.

In ionic bonds, one atom loses electrons and becomes a positively charged ion (cation), while the other atom gains electrons and becomes a negatively charged ion (anion). In this case, magnesium will lose two electrons to become Mg2+ and fluorine will gain one electron to become F-. These two ions will then attract each other electrostatically to form magnesium fluoride (MgF2), which is an ionic compound.

On the other hand, covalent bonds are formed between elements with a small difference in electronegativity, where atoms share electrons to achieve a stable electron configuration. Magnesium and fluorine have a large electronegativity difference, so they are unlikely to share electrons and form a covalent bond. Therefore, magnesium and fluorine will most likely form an ionic bond.

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Answer:

The answer to this is simple.  

There is a school of thought that believes that natural fires are necessary.

Explanation

They are required to reduce the density of the forests that are so thick that when they eventually burn, the effects are usually catastrophic. According to one source, some of these forests are over a hundred years old. When eventually these kinds of forests catch fire, they become very hard to manage and the destruction the leave are usually worse off than if they had not been allowed to so heavy and impenetrable.  

Another reason put forward by this school of thought is that the countries who own these forests have politicised wildfires using them as an excuse to attract international funding/assistance because the fires are depleting the worlds protective greenery/earth biggest natural oxygen factory.

Cheers!

The correct order of the given elements above in their increasing atomic radii are as follows:

The atomic radius of an element is one periodic properties of elements which describes the total distance between the center of the nucleus of an element to the outermost shell of an electron.

From the task given above, the atomic radii values of the elements in the problem above are: Phosphorus ( 98pm ), Cobalt ( 152pm ), Ruthenium ( 178pm ), Osmium ( 185pm ) and finally Gallium which is 187pm.

That being said, below are some few examples of periodicities which is seen in elements in the periodic table:

In conclusion, the atomic radius and atomic size are both periodic properties of elements.

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The cathode half cell will have no maximum reduction potential and the engineer can choose an appropriate cathode that will deliver atleast 0.13V or more power

What is a cathode ?

An electrical device with polarized current has a metallic electrode called a cathode through which current is discharged. The electrode in a polarized electrical device via which current enters from an external circuit is known as an cathode, on the other hand.

what is an half-reaction?

The portion of a larger reaction known as a half-reaction constitutes either an oxidation or a reduction on its own. For a redox reaction to be fully described, it requires two half-reactions, one oxidation and one reduction.

The given half cell will work as the anode of the galvanic cell. Oxidation occurs at the anode and the standard oxidation potential E0ox = -E0red. Therefore, the given half cell will have oxidation potential E0ox = -(-1.07 V) = +1.07 V.

The cell potential is given as E0cell = E0red + E0ox and the cell potential will have a value of atleast 1.20 V. Therefore, put E0cell = 1.20 V and get

E0red = E0cell – E0ox = (1.20 V) – (1.07 V) = 0.13 V.

If the cathode half cell has a reduction potential less than 0.13 V, then the cell potential of the galvanic cell will fall below 1.20 V. Hence, the cathode half cell must have a minimum standard reduction potential of +0.13 V

The cell is supposed to deliver atleast 1.20 V power. However, the cell can deliver more than 1.20 V power. Say, the cell delivers 1.30 V power. Then putting E0cell = 1.30 V, we have,

E0red = (1.30 V) – (1.07 V) = 0.23 V.

Hence, the cathode half cell will have no maximum reduction potential and the engineer can choose an appropriate cathode that will deliver atleast 0.13V or more power.

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Because it has less surface area. This can be applied to something like cooking potatoes. Cooking a larger potato will take longer than a small potato.

Answer:

Explanation:

.

Answer:

See explanation

Explanation:

Crystallization is a separation technique used to obtain pure crystals of a substance from an impure mixture of solid substances.

The impure solid is dissolved in an appropriate hot solvent. This hot solvent is able to effectively dissolve the solid. However, as the solution is allowed to cool, the pure solid separates out of the solution as crystals.

The solid is now filtered to obtain the pure solid. The solid is also washed and dried to remove any solvent contaminant.

The change in the internal energy of one mole of a monatomic ideal gas in an isobaric expansion at 1 atm from a volume of 5 m³ to a volume of 10 m³ is -12.5 R J/mol.

Internal Energy, ΔU of an ideal gas in an isobaric expansion is given by the formula;

ΔU = nCpΔT

Where;n = number of moles of the gas

Cp = Specific heat capacity at constant pressureΔT = change in temperature. To identify the change in internal energy of one mole of a monatomic ideal gas in an isobaric expansion at 1 atm from a volume of 5m³ to a volume of 10m³, we are required to solve for the value of ΔU using the formula above. From the ideal gas equation;

PV = nRT,

we can also obtain the formula for isobaric expansion as;

ΔT = (PΔV/nR)

where;

P = pressure

V = volume

R = Gas constant

n = number of moles

Substituting into the formula for ΔU

ΔU = nCpΔT= (1 mole) × (5/2)R × (1 atm) × (5m³ - 10m³)/(1 mole × R)=-12.5 R J/ mole

ΔU = -12.5 R J/mol

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atoms in order of decreasing first ionization energies is given by F>Be>Li>Ba .

Ionization energy can be defined simply as a measurement of how difficult it is to remove an electron from an atom or ion or of an atom's or ion's propensity to give up an electron. Usually, when a chemical species is in its ground state, an electron is lost.

As an alternative, we can say that ionisation or ionisation energy is a measurement of the strength of the attractive forces that hold an electron in a specific location.

ionization energy can be defined more precisely as the least amount of energy that an electron in a gaseous atom or ion must absorb to escape the nucleus's influence. It is typically an endothermic reaction and is also known as the ionisation potential.

Ionization is the process of removing an electron from its orbit and moving it outside of the atom. Ionization energy is equal to the difference in energy between the energy of the electron in the initial orbit and the energy of the electron outside the atom since each orbit of the electron has a distinctive energy (in the infinite orbit from the nucleus).

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Oceanic plate is driven downward at a boundary. Option C is the right answer.

Oceanic plates are tectonic plates that make up the Earth's ocean floor. They are denser and thinner than continental plates and underlie the world's ocean basins. The movement of oceanic plates is responsible for the creation of mid-ocean ridges and subduction zones, which are key features of plate tectonics.

Tectonic plates are large pieces of Earth's lithosphere that move and interact, causing earthquakes, volcanic eruptions, and the creation of mountains. There are seven major and several minor plates on Earth. The movement and collision of these plates create plate boundaries such as divergent, convergent, and transform.

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Answer:

Yes

Explanation:

Abstract. The negative ion of hydrogen continues to be important in atomic physics and astrophysics. Correlations between the two electrons are strong alieady in the ground state, the only bound state in this three-body system.

Leonard uses a gas stove in a poorly ventilated kitchen, the gas which could rise to dangerous levels in Leonard's kitchen is Carbon Monoxide, option B.

Carbon monoxide is a toxic, combustible gas that has no colour, flavour, or taste and is slightly less dense than air.

When carbon monoxide accumulates in your bloodstream, it causes carbon monoxide poisoning. When there is an excessive amount of carbon monoxide in the air, your body replaces the oxygen in your red blood cells with carbon monoxide. This can result in severe tissue damage or even death.

Carbon monoxide is a colourless, odourless, and tasteless gas that is created when gasoline, wood, propane, charcoal, or any fuel is burned. Improperly vented appliances and engines, particularly in a closely sealed or enclosed location, may allow lethal quantities of carbon monoxide to develop.

If you suspect that you or someone you're with has carbon monoxide poisoning, get some fresh air and seek immediate medical attention.

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Answer:

Earth Science?

Explanation:

its not marine science or life so its physical or earth

Answer:

2.96 x 10^-19 J

Explanation:

I just took the test

What is the volume contribution from of the suspended particles (pheavy) in part v: pressures and mixes of gases for testing 6 (150 heavyweight 50 light particles)? Thus, the heavy particle contribution to pressure is 17.5 atm.

The physical force applied to an object is referred to as force. Per unit area, a perpendicular force is delivered to the face of the objects. F/A is the basic equation for force. The pressure unit is P. Intrinsic, barometric, difference, and gage pressures are different types of force. This amount of force applied to a certain region is called to as pressure. The concept of pressure is crucial to fluid mechanics and is used to represent a gas's energy in the ideal gas, among many other physical applications.

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The change in heat for the given reaction is approximately is -946 kJ/mol.

The change in heat for the reaction of methane (CH4) with fluorine (F2) to form tetrafluoromethane (CF4) and hydrogen gas (H2) can be calculated using the given average bond dissociation energies (D).

ΔH = [(bonds broken) - (bonds formed)] x D

For this reaction, the bonds broken are:
1 C-H bond in CH4, 2 F-F bonds in F2, with respective D values of 410 kJ/mol, and 158 kJ/mol.

The bonds formed are:
4 C-F bonds in CF4, 2 H-H bonds in H2, with respective D values of 450 kJ/mol, and 436 kJ/mol.

Now, let's calculate the ΔH:
ΔH = [(1 x 410) + (2 x 158) - (4 x 450) - (2 x 436)] kJ/mol
ΔH = [410 + 316 - 1800 - 872] kJ/mol
ΔH = -946 kJ/mol

Thus, the change in heat for the given reaction is approximately -946 kJ/mol.

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