What would happen to future island chains if volcanic eruptions stopped occurring on the seafloor?

A molecule that is sp³d² hybridized and has a molecular geometry of square pyramidal has 5 bonding groups and 1 lone pair around its central atom.

A molecule that is hybridized and has a molecular geometry of square pyramidal has 6 bonding groups and 0 lone pairs around its central atom. The hybrid orbitals are directed towards the vertices of a square pyramid.

In the sp³d² hybridization, the central atom has a total of 6 electron domains, consisting of 5 bonding groups (each representing a bond with another atom) and 1 lone pair (representing a pair of non-bonding electrons).

The arrangement of these electron domains results in a molecular geometry of square pyramidal, where the bonding groups occupy the corners of a square base and the lone pair is located above the center of the square base, giving it a pyramidal shape.

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Answer:

super washing soda can I mix into them

Answer:

The SI system : The international system of units.

It is a scientific method of expressing the magnitudes or quantities of important natural phenomena.

Benefits of SI system

The Bronsted-Lowry acid, base and the conjugate acid-base in each of the following reactions are mentioned below serially:

Bronsted-Lowry acid                                  Bronsted-Lowry base

HNO₃                                                           H₂O

H₂O                                                              NH₃

H₂SO₄                                                          OH⁻

H₂O                                                              C₂H₃O₂⁻

H₂PO₄⁻                                                         OH⁻

H₃O⁺                                                             H₂PO₄⁻

HCO₃⁻                                                           H₂O

H₂O                                                               HCO₃⁻

Conjugate acid:                                           Conjugate base:

H₃O⁺                                                             NO₃⁻

NH₄⁺                                                             OH⁻

H₂O                                                              HSO₄⁻

HC₂H₃O₂⁻                                                    OH⁻

H₂O                                                              HPO₄²⁻

H₃PO₄                                                          H₂O

H₃O⁺                                                            CO₃²⁻

H₂CO₃                                                          OH⁻

Bronsted-Lowry acids are known to be substances those donate protons or H+ ions to other compounds to produce conjugate bases. Bronsted-Lowry bases are the substances that accept protons or H+ ions from other compounds to form conjugate acids.

For the given reactions:

a. HNO₃ + H₂O ⇔ H₃O⁺ + NO₃⁻

Bronsted-Lowry acid: HNO₃

Bronsted-Lowry base: H₂O

Conjugate acid: H₃O⁺

Conjugate base: NO₃⁻

b. NH₃ + H₂O ⇔ NH₄⁺ + OH⁻

Bronsted-Lowry acid: H₂O

Bronsted-Lowry base: NH₃

Conjugate acid: NH₄⁺

Conjugate base: OH⁻

c. H₂SO₄ + OH⁻ ⇔ HSO₄⁻ + H₂O

Bronsted-Lowry acid: H₂SO₄

Bronsted-Lowry base: OH⁻

Conjugate acid: H₂O

Conjugate base: HSO₄⁻

d. C₂H₃O₂⁻ + H₂O ⇔ OH⁻ + HC₂H₃O₂

Bronsted-Lowry acid: H₂O

Bronsted-Lowry base: C₂H₃O₂⁻

Conjugate acid: HC₂H₃O₂⁻

Conjugate base: OH⁻

e. H₂PO₄⁻ + OH⁻ ⇔ HPO₄²⁻ + H₂O

Bronsted-Lowry acid: H₂PO₄⁻

Bronsted-Lowry base: OH⁻

Conjugate acid: H₂O

Conjugate base: HPO₄²⁻

f. H₂PO₄⁻ + H₃O⁺ ⇔ H₃PO₄ + H₂O

Bronsted-Lowry acid: H₃O⁺

Bronsted-Lowry base: H₂PO₄⁻

Conjugate acid: H₃PO₄

Conjugate base: H₂O

g. HCO₃⁻ + H₂O ⇔ H₃O⁺ + CO₃²⁻

Bronsted-Lowry acid: HCO₃⁻

Bronsted-Lowry base: H₂O

Conjugate acid: H₃O⁺

Conjugate base: CO₃²⁻

h. HCO₃⁻ + H₂O ⇔ H₂CO₃ + OH⁻

Bronsted-Lowry acid: H₂O

Bronsted-Lowry base: HCO₃⁻

Conjugate acid: H₂CO₃

Conjugate base: OH⁻

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For iron (Fe), there are 18 inner/core electrons and 8 outer/valence electrons.

Specifically focusing on the element iron (Fe). To determine the number of inner/core and outer/valence electrons in Fe, we need to look at its electron configuration.

Iron (Fe) has an atomic number of 26, which means it has 26 electrons. Its electron configuration is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶. To find the inner/core and outer/valence electrons, we need to divide the configuration into core and valence shells.

The inner/core electrons are those in the filled, lower-energy shells:

1s² 2s² 2p⁶ 3s² 3p⁶, which totals to 18 inner/core electrons.

The outer/valence electrons are those in the highest-energy shell and any unfilled subshells:

4s² 3d⁶, which totals to 8 outer/valence electrons.

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Answer:

True

Explanation:

course hero verified.

The empitical formula shows the simplest ratio of elements in a compound (not the total number of atoms in the molecule).

So to find the empirical formula we need to calculate how many moles of each atom we have in this sample. Then we will see the ratio of each element.

We are given the mass, so to convert it to moles we use the molar mass. For this we go to the periodic table and see that the values for each element are:

Na (sodium): 22,99 g/mol

H (hydrogen): 1 g/mol

P (phosphorus): 25,81 g/mol

So we calculate the moles of each element as follows:

And as we see, for every 0.833 moles of Na we have the same number of moles of P, so the ratio of these elements in the molecule is 1 to 1.

As for the hydrogen:

So the ratio Na to H is 1 to 2.

Now we can write the empirical formula as follows=

Answer:

Ca (not CA)

Mg (not mg)

hope that answers your question.

Answer:

Calcium and Magnesium

Explanation:

The answer is that.

Answer:

43.2

Explanation:

you use the charles law.

Answer:

Chromosomes line up randomly and cross genetic information between unpaired chromosomes.

Explanation:

Answer:

d.

Explanation:i took the quiz on edge 2020

Answer:

The effect of adding a solute to a solvent has the opposite effect on the freezing point of a solution as it does on the boiling point. A solution will have a lower freezing point than a pure solvent. The freezing point is the temperature at which the liquid changes to a solid.

Explanation:

Hope this helps :3

The change in freezing point of a solution is inversely proportional to the number of solute particles in the solution and dependent on the type of particle,is the the TRUE statement.

The change in freezing point of a solution is inversely proportional to the number of solute particles in the solution and dependent on the type of particle,is the the TRUE statement.

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Explanation:

Cu(OH)2 → CuO + H₂O

FW CuO 79.545 g

g CuO = 0.75 mol x 79.545 g/mol = 59.659 g

Explanation:

freezing point depression is a phenomenon that describes why adding a solute or solvent results in the lowering of the freezing point of the solvent

The concentration of A → products, successive half-lives are observed to be 10.0, 20.0, and 40.0 min for an experiment in which [ A ] 0 = 0.10 M at the following times,

a. 80.0 min = 0.0107 M.

b. 30.0 min = 0.0471 M

To solve this problem, we can use the following equation for a first-order reaction:

ln([A]t/[A]0) = -kt

where [A]t is the concentration of A at time t, [A]0 is the initial concentration of A, k is the rate constant, and t is time.

From the given half-lives, we can find the rate constant k as follows:

k = (0.693/t1/2)

where t1/2 is the half-life.

For the given experiment, we have:

k1 = (0.693/10.0) = 0.0693 \(min^{-1}\)

k2 = (0.693/20.0) = 0.03465 \(min^{-1}\)

k3 = (0.693/40.0) = 0.017325 \(min^{-1}\)

a. To find the concentration of A at 80.0 min:

t = 80.0 min

[A]t = [A]0 × \(e^{(-kt)}\) = 0.10 × \(e^{(-(0.069380.0 + 0.0346580.0 + 0.017325 * 80.0))}\) = 0.0107 M

Therefore, the concentration of A at 80.0 min is 0.0107 M.

b. To find the concentration of A at 30.0 min:

t = 30.0 min

[A]t = [A]0 × \(e^{(-kt)}\) = 0.10 × \(e^{(-(0.069330.0 + 0.0346530.0 + 0.017325 * 30.0)}\)) = 0.0471 M

Therefore, the concentration of A at 30.0 min is 0.0471 M.

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The question is -

For the reaction A → products, successive half-lives are observed to be 10.0, 20.0, and 40.0 min for an experiment in which [ A ] 0 = 0.10 M . Calculate the concentration of A at the following times.

a. 80.0 min

b. 30.0 min

Based on the data, the resulting chloride formula is MCl₃.

The mass of the metal is 2.45 g, and the mole of the metal is 0.0908 mol. Furthermore, the mass of metal chloride is 12.11 g,

So:

Mass of metal = moles of metal x atomic mass of metal

2.45 = 0.0908 x the atomic mass of the metal

The atomic mass of the metal = 27.0 g/mol.

Then:

mass of metallic metal = mass of metal + atomic mass of chlorine

                       12.11 = 2.45 + the atomic mass of chlorine in metallic metals

The atomic mass of chlorine in metallic metals = 9.66 g

Because the atomic mass of Cl atoms = 35.5 g/mol

And elemental mass = moles of elements x atomic mass

                          9.66 = moles of Cl in metal chloride x 35.5

Moles of Cl in metal chloride = 0.272 moles

Therefore, the mole ratio of metal M to chlorine atoms Cl in metal chloride = M : Cl = 0.0908 : 0.272 = 1 : 3

Hence metal chloride has 1 metal atom for every 3 chlorine atoms.

=> the formula for chloride is MCl₃.

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Answer:

Sodium reacts with the oxygen in air. It reacts vigorously with oxygen and the moisture that is already present in the air and thus catches fire.

It would be a bad idea to make coins made of sodium metal, beacause of their reactive nature.

Those species which are not stable in nature and always ready to show reaction with another species, is known as reactive species.

Sodium metal is highly reactive in nature, means it easly reacts with the atmospheric oxygen and shows oxidation or with the moisture content of atmosphere as a result of which vigorously catches fire. That's why we don't use sodium to make coin.

Hence, beacause of reactive nature sodium is not used.

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Answer:

hey jazmin! I have been on your friends list for a while on brainly, I thought I'd say hi.

Answer:

A and E

Explanation:

with Adenine ,thymine , cytosine and guanine

NICE its did not work at all

In Bro3− ion, all oxygen atoms are the same, so the three oxygen atoms contribute equally to the overall resonance hybrid. As a result, we can only draw three equivalent resonance structures for the ion Bro3−.Therefore, the correct answer is 3.

Resonance structures are a set of multiple Lewis structures that depict the probable locations of electrons in a molecule. By drawing multiple resonance structures, it shows how the electrons are distributed among the atoms within a molecule. EquivalentEquivalent resonance structures have the same arrangement of atoms and electrons. They differ only in the placement of the double bond or the location of the lone pair of electrons. How many equivalent resonance structures can be drawn for the ion Bro3−?The ion Bro3− has three oxygen atoms that are equivalent. In Bro3− ion, all oxygen atoms are the same, so the three oxygen atoms contribute equally to the overall resonance hybrid. As a result, we can only draw three equivalent resonance structures for the ion Bro3−.Therefore, the correct answer is 3.

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Answer:

In fall and spring the planets axis is in line with the sun. It's directly over the equator, equally hitting the northern and southern hemispheres.

During the reaction given above, electrons are transferred from Cu(s) to Ag+ (aq) (option 1).

An ionic equation is a chemical equation in which the dissolved ionic compounds are written as separated ions.

According to this question, a balanced ionic equation is given as follows: Cu(s) + 2Ag+ (aq) → Cu²+ (aq) + 2Ag(s)

Based on the above equation, electrons are transferred from solid copper to silver ion, making copper the reducing agent while silver ion is the oxidizing agent.

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The chemist plans to identify the unknown liquid by measuring its density and comparing it to known densities. The densities of various substances are typically listed on Material Safety Data Sheets (MSDS).

To begin the identification process, the chemist should gather the MSDS for each substance mentioned in the note on the cabinet door: ethanolamine, methyl acetate, chloroform, tetrahydrofuran, and diethylamine. These MSDS will provide the density information needed to compare with the unknown liquid.

Next, the chemist should measure the density of the unknown liquid using a suitable instrument, such as a densitometer or hydrometer. It's important to ensure that the measurement is accurate and precise.

Once the density of the unknown liquid is determined, the chemist can compare it to the densities listed on the MSDS for the known substances. By finding a match between the measured density of the unknown liquid and the density of one of the known substances, the chemist can identify the unknown liquid.

For example, if the measured density of the unknown liquid matches the density of ethanolamine listed on the MSDS, then the chemist can conclude that the unknown liquid is ethanolamine. If there is no exact match, the chemist can use the closest density value as a potential identification.

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The statement that best describes the main function of the digestive system is to break down and absorb food, option (D) is correct.

When we eat, our food must be broken down into smaller molecules so that our bodies can absorb the nutrients we need for energy, growth, and repair. The digestive system is responsible for this process, which begins in the mouth with chewing and continues through the esophagus, stomach, small intestine, and large intestine.

In addition to breaking down food, the digestive system also plays a role in eliminating waste products from the body. The large intestine absorbs water and electrolytes from undigested food, while the rectum and anus eliminate solid waste from the body, option (D) is correct.

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The complete question is:

Which of the following best describes the main function of the digestive system?

A To provide an external boundary for the body

B To transport oxygen to body cells while removing waste

C To send and receive chemical messages

D To break down and absorb food

Answer:

HBr

Explanation:

Element x is unbibium has an average atomic mass of 122. 224 u and isotopic mass of the least abundant isotope is 237.03

Isotopes are members of a family of an element that all have the same number of protons but different numbers of neutrons and the number of protons in a nucleus determines the element's atomic number on the periodic table called isotopes

Unbibium, also known as element 122 or eka-thorium, is the hypothetical chemical element in the periodic table with the placeholder symbol of Ubb and atomic number 122 and unbibium has two isotopes ³⁷⁴Ubb and ³⁷¹Ubb and this abundant isotope has an isotopic mass of 121. 560 u and a relative abundance of 63. 89% and the isotopic mass of the least abundant isotope is 237.03

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One example of a plant adaptation is the presence of thorns or spines. Thorns are sharp, pointed structures that protrude from the stems or branches of a plant, while spines are modified leaves that have become hardened and pointed.

Thorns and spines are adaptations that have evolved in plants as a defense mechanism against herbivores. They help the plant survive by deterring animals from eating their leaves, stems, or fruits. By inflicting physical harm, thorns and spines can discourage herbivores from approaching or consuming the plant.

In addition to their defensive role, thorns and spines can also serve as a means of support for the plant. They can help anchor climbing or creeping plants to other structures, or help them cling to surfaces such as walls or rocks.

Overall, the presence of thorns or spines in plants is an adaptation that helps them survive by providing a physical deterrent against herbivores and a means of support.

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