Calculate the ph of the solution upon the addition of 0. 015 mol of naoh to the original buffer.

Based on the principles of fluid mechanics and erosion, the water in the river flows faster on the outside of the bend and slower on the inside.

Meandering rivers are formed due to the lateral erosion of the riverbank, which creates a curvy path for the water to flow. This is caused by the differences in water velocity between the outside and inside bends of the river.

The above difference in velocity causes the water on the outside to exert more erosive force on the bank, leading to more erosion on the outside of the curve. The slower-moving water on the inside, by contrast, tends to deposit sediment, which can result in the formation of sandbars and other features.

Therefore, it is likely that there is more erosion on the outside of the curve in the riverbed as water flows through it.

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Answer:

Carbon 16

Explanation:

Isotope of nitrogen

Hg⁺ with I⁻ forms HgI

Hg⁺ with S²⁻ forms Hg₂S

Hg⁺ with CO₃²⁻ forms Hg₂CO₃

K⁺ with I⁻ forms KI

K⁺ with S²⁻ forms K₂S

K⁺ with CO₃²⁻ forms K₂CO₃

Answer:

Model

Explanation:

A model of anything is something you make to represent it in it's physical world form

Answer:

Granite, diorite Gabbro, and peggmatite are example of ectrusive igneous rocks.

Examples of extrusive igneous rocks are Pegmatite, Diorite, Granite, and Gabbro. The correct options are B, C, E and F.

Igneous rocks are the rocks formed when the hot lava or magma cools down and becomes brittle. These rocks are formed in the place where volcanic eruption occurs. The two types of igneous rocks are intrusive and extrusive igneous rocks.

The extrusive igneous rocks are formed when the hot lava cools down above or near the surface of the earth.

Thus, the correct option correct options are B, Pegmatite, C, Diorite, E Granite, and F Gabbro regarding extrusive igneous rocks.

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Answer:

they are differently charged

Explanation:

a cation is positively charged.It becomes positive when the atom loses electrons.We say it is positive because in the ratio of protons to electron, protons are more.( protons:+ )

a anion is negatively charged.It become negative when the atom gains electrons.We say it is negative because in the ratio of electrons to protons, electron are more.( electrons:- )

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70.9-gram sample of \(Cl_{2}\) gas will occupy Opton C. 22.4 liters at STP.

To determine the volume occupied by the sample of \(Cl_{2}\) (g) at STP, we can use the ideal gas law equation, PV = nRT

where P = pressure

V = volume

n = number of moles

R = ideal gas constant

T = temperature.

At STP (Standard Temperature and Pressure), the pressure is 1 atmosphere (atm) and the temperature is 273.15 Kelvin (K).

First, calculate the number of moles of \(Cl_{2}\) (g) using its molar mass. The molar mass  \(Cl_{2}\) is 70.9 grams/mol.

Number of moles (n) = mass (m) / molar mass (M)

n = 70.9 g / 70.9 g/mol

n = 1 mol

Now, we can calculate the volume using the ideal gas law:

V = (nRT) / P

V = (1 mol * 0.0821 L·atm/mol·K * 273.15 K) / 1 atm

V ≈ 22.4 L

Therefore, the correct answer is C. 22.4 L.

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Answer:

Elements?

Explanation:

Im not sure but I think its elements because carbon dioxide is, and the others sound like it too

Answer:

1.

a. 1.2   x 10^−4 mm

b. 5.6  x 10^5  cm

c. 3.34 x 10^4  kg

d. 4.12  x 10^-4 s

2.

a. 70.5 g

b. 40.0005

c. 23500

Explanation:

The following measurements in scientific notation are:

 a. 0.000 12 mm = 1.2 × 10⁻⁴mm

 b. 560000 cm  = 5.6 × 10⁵  cm

 c. 33400 kg   =  3.34 × 10⁴ kg

 d. 0.0004120 = 4.12 × 10⁻⁴ s

The following measurements are in scientific notation, by writing them in ordinary notation, we have:

 a 7.050 × 10 = 70.50 g

 b. 4.00005 × 10 = 40.0005 mg

 c. 2.3500 × 10⁴ mL = 23500 mL

Scientific notation is a better method of writing and expressing a large number in smaller acceptable ways. This is done by counting the decimal place before the real numbers and multiplying it to their power of 10.

In the first case, we count the position of the real numbers and raise it to the power of 10.

So, counting from the front part to the back takes a negative power and vice versa. (i.e counting from the back to the front takes a positive power).

 a. 0.000 12 mm = 1.2 × 10⁻⁴mm

 b. 560000 cm  = 5.6 × 10⁵  cm

 c. 33400 kg   =  3.34 × 10⁴ kg

 d. 0.0004120 = 4.12 × 10⁻⁴ s

An ordinary notation is an ideal method of writing scientific notations back to their normal ordinary ways. From the given information, the scientific notation can be written in ordinary ways as follows:

 a 7.050 × 10 = 70.50 g

 b. 4.00005 × 10 = 40.0005 mg

 c. 2.3500 × 10⁴ mL = 23500 mL

Therefore, we can conclude that we clearly understood the difference between scientific notation and ordinary notation and how to compute figures in either scientific notation and ordinary notation.

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Answer:

An atom is the smallest particles of an element that takes part in a chemical reaction.

Explanation:

The three tiny particles are usually referred to as subatomic particles. They are Protons, Neutrons and Electrons.The protons and neutrons in the nucleus are collectively referred to as nucleus

Answer:

it explodes

Explanation:

Answer:

Mrs girl I'm sorry I don't know

I just need the points

Answer:

This law states that the volume and temperature of a gas have a direct relationship: As temperature increases, volume increases, when pressure is held constant. Heating a gas increases the kinetic energy of the particles, causing the gas to expand.

Explanation:

Considering the Charles's law and STP conditions, the volume of the gas at standard temperature is 12.61 L.

Charles's law establishes the relationship between the volume and temperature of a gas sample at constant pressure.

This law says that for a given sum of gas at constant pressure, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases. That is, the volume is directly proportional to the temperature of the gas.

Mathematically, Charles's law states that the ratio between volume and temperature will always have the same value:

\(\frac{V}{T} =k\)

Considering an initial state 1 and a final state 2, it is fulfilled:

\(\frac{V1}{T1} =\frac{V2}{T2}\)

The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C (or 273 K) are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.

In this case, you know:

Replacing in the definition of Charles's law:

\(\frac{13.4 L}{290 K} =\frac{V2}{273 K}\)

Solving:

\(V2= 273 K\frac{13.4 L}{290 K}\)

V2= 12.61 L

Finally, the volume of the gas at standard temperature is 12.61 L.

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Answer:

1J = 0.238846cal

52J = 12.42cal

The center of an atom is known as the nucleus, which is a dense region consisting of protons and neutrons. The protons carry a positive charge while the neutrons carry no charge.

The number of protons in the nucleus determines the atomic number of the element. The electrons of the atom orbit around the nucleus in specific energy levels or shells. The nucleus plays a crucial role in determining the properties of the element, including its reactivity and stability. Understanding the structure of the nucleus and how it interacts with the electrons is essential in understanding the behavior of matter at the atomic level.

The center of an atom is a dense region called the nucleus, which consists of protons and neutrons. Protons carry a positive charge, while neutrons have no charge. Electrons, which are negatively charged, orbit the nucleus in distinct energy levels. The number of protons in the nucleus determines an element's atomic number and identity. The combination of protons and neutrons gives the atom its atomic mass. Overall, the nucleus plays a crucial role in defining an atom's properties and chemical behavior.

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The second ionization energy of a sodium atom isThe correct answer is option (d): Much greater than the first ionization energy because the second ionization requires the removal of a core electron.

Ionization energy refers to the amount of energy required to remove an electron from an atom or ion in the gaseous state. The first ionization energy corresponds to the removal of the outermost electron, which is typically the valence electron. In the case of sodium (Na), which is an alkali metal, the first ionization energy is relatively low because alkali metals have a single valence electron that is far from the nucleus and easily removed. However, the second ionization energy refers to the energy required to remove an additional electron after the first one has been removed. In the case of sodium, the second ionization energy is much greater because the electron being removed is a core electron, closer to the nucleus and therefore more strongly attracted to it. Removing a core electron requires overcoming a stronger electrostatic attraction, resulting in a higher energy requirement.Thus, the second ionization energy of a sodium atom is much greater than the first ionization energy because it involves the removal of a core electron, which is more difficult to remove compared to the valence electron involved in the first ionization.

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At pH 7.4, pyruvate exists in its anionic form, known as pyruvate anion or pyruvate ion structure is (CH3COCOO-).

The net reaction of glycolysis, including coefficients, can be summarized as follows:

Glucose + 2 ADP + 2 Pi + 2 NAD+ ⟶ 2 Pyruvate + 2 ATP + 2 NADH

Here are the values for the coefficients:

a = 2 (since 2 ADP molecules are consumed)

b = 2 (since 2 Pi molecules are consumed)

c = 2 (since 2 NAD+ molecules are consumed)

x = 2 (since 2 pyruvate molecules are produced)

y = 2 (since 2 ATP molecules are produced)

z = 2 (since 2 NADH molecules are produced)

To draw the structure of pyruvate at pH 7.4.

Pyruvate is a three-carbon molecule with the chemical formula C3H4O3.

At pH 7.4, pyruvate exists in its anionic form, known as pyruvate anion or pyruvate ion (CH3COCOO-).

Here is a simplified structural representation of pyruvate at pH 7.4:

In the structure, the carbon skeleton consists of three carbon atoms, with a carbonyl group (C=O) attached to one carbon and a carboxylate group (-COO-) attached to another carbon.

The remaining carbon is bonded to a hydrogen atom.

The negative charge (represented by the "-") is present on the oxygen atom, indicating the anionic form of pyruvate.

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Some assumptions that might be made in such an analysis and their importance to made in the determination of the composition of the Al-Zn alloy are Homogeneous mixture, Ideal behavior, Accurate standards etc.

What are the assumptions?

1. Homogeneous mixture: It is assumed that the Al-Zn alloy is a homogeneous mixture with uniform distribution of the constituent elements. This is important because if the alloy is not homogeneous, it may lead to errors in determining its composition.

2. Ideal behavior: It is assumed that the Al-Zn alloy behaves ideally, which means that the interactions between the Al and Zn atoms are negligible. This assumption simplifies the calculations and makes the analysis more straightforward.

3. Accurate standards: It is assumed that the standards used in the analysis are accurate and have known compositions. This is important because the accuracy of the standards directly affects the accuracy of the results.

4. Complete dissolution: It is assumed that the Al-Zn alloy is completely dissolved in the acid solution used for analysis. This is important because incomplete dissolution can lead to errors in determining the composition of the alloy.

5. Stoichiometry: It is assumed that the chemical reaction between the acid and the alloy occurs according to the stoichiometry of the reaction. This assumption is important because any deviation from the expected stoichiometry can lead to errors in determining the composition of the alloy.

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Answer:=33.8 psi

Explanation:

Answer:

33.8007 (i think)

Explanation:

In benzene (C6H6), there are 6 pi bonds formed by a total of 12 electrons.

Benzene (C6H6) is a cyclic compound with a hexagonal ring of carbon atoms, and each carbon atom is bonded to a hydrogen atom. In addition to the sigma bonds formed by overlapping orbitals between carbon and hydrogen atoms, benzene also exhibits pi bonding due to the presence of delocalized pi electrons in its molecular orbitals.

The pi bonding in benzene arises from the overlapping of p orbitals on adjacent carbon atoms. Each carbon atom in the benzene ring contributes one electron to the delocalized pi system. Since there are 6 carbon atoms in benzene, there are a total of 6 pi bonds formed. Each pi bond consists of two electrons, so the total number of electrons involved in pi bonding in benzene is 6 pi bonds multiplied by 2 electrons per bond, which gives us 12 electrons.

These delocalized pi electrons contribute to the stability of the benzene molecule and are responsible for its unique properties, such as aromaticity.

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Answer:

Where is the data table?

Answer:

The answer should be A. the mechanism will provide defense against many different types of pathogens :)

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Answer:

To convert from moles to atoms, multiply the molar amount by Avogadro's number. To convert from atoms to moles, divide the atom amount by Avogadro's number (or multiply by its reciprocal).

Explanation:

Answer:

lead (II) chlorate

Explanation:

precipitate means not soluble in water

potassium chlorate is not very soluble in water, it precipitates and may be collected by filtration

lead(II) chloride can be made as a white precipitate by adding a solution containing chloride ions to lead(II) nitrate solution

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A debate among scientists on how new species form is based on speciation.

Divergence explains how organisms on Earth are related because it shows how species are similar or different.

Genes play the role in diversity of carrying information that results in changes from one generation to the next.

Natural selection is part of evolution because it explains why attributes are either in existence or have gone extinct.

One of the main debates among scientists on how new species form centers around the concept of speciation. There are two main hypotheses for speciation: allopatric speciation and sympatric speciation.

Divergence is the process by which different populations or species of organisms evolve from a common ancestor over time. This process is responsible for the diversity of life on Earth. By studying the similarities and differences between different organisms, scientists can infer evolutionary relationships.

Genes are the basic units of inheritance that carry information from one generation to the next. They play a crucial role in creating diversity among organisms. The genetic diversity of a population is the result of mutations, gene flow, and genetic drift.

The theory of natural selection is one of the most important and widely accepted explanations for the diversity of life on Earth. It is the process by which certain traits become more or less common in a population over time, depending on their impact on the survival and reproduction of the organisms that possess them.

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Answer:

b

Explanation:

i took the quiz

Answer: 62.4g according to a quizlet

Explanation:

Answer:

An atom that gains a negative electron, it becomes a negative ion. ... A lithium atom has 3 protons and 3 electrons. It can lose one of its electrons, making it an ion. It now has more positive protons than electrons so it has an overall positive charge.

Answer:

This means a Lithium atom formed into a Lithium ion by losing one of its electrons. It has three electrons and three protons to begin with. So when it loses or gains one the amount isnt equal, that is why it becomes an ion. If it gained electrons it would have a negative charge on the nulcleus, though if it lost electrons it would have a positivec charge. Hope this helped!!