the figure shown has two parallel lines cut by a transversal

Answer:

because mariah carey wrote it

Explanation:

she also made a song out of it!

Answer:   Because planets do not have nuclear fusion, they do not produce their own light. Instead, they shine with light reflected from a star. When we see planets in the night sky, such as Venus, the so-called "Evening Star," we're seeing reflected sunlight.

Explanation:

Answer:

Carbon has four valence electrons in its shell carbon can share electrons with up to four different atoms.

Explanation:

Answer: B) the forces in the solid hold the atoms tightly in place

Explanation:This is because there is no room for the atoms to move around much and because they are very close together which makes the phase a solid.

Answer:

Co(NO3)2

Explanation:

The chemical formula for cobalt(II) nitride is Co₃N₂ which has 3 and 2 cobalt and nitrogen atoms respectively.

Chemical  formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols  of elements. It also makes use of brackets and subscripts.

Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form  is called empirical formula.

It is not the same as structural formula and does not have any information regarding structure.It does not provide any information regarding structure of molecule as obtained in structural formula.

There are four types of chemical formula:

1)empirical formula

2) structural formula

3)condensed formula

4)molecular formula

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Answer:

iron

Explanation:

[Ar]4s23d2 is the noble gas notation for titanium.

The noble gas notation is a way of writing the electron configuration of an atom that uses the symbol for the nearest noble gas to represent the filled inner shells. In the case of titanium, the nearest noble gas is argon, which has an electron configuration of [Ar]3d104s2.

The electron configuration for titanium is then written as [Ar]4s23d2. This means that the titanium atom has the same electron configuration as argon, plus two electrons in the 4s subshell and two electrons in the 3d subshell.

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It is said that two substances are entirely miscible when they combine to create a single homogenous phase in all ratios. When two substances, like oil and water, are essentially insoluble in one another, they are said to be immiscible.

The substance present in the highest amount is the solvent in all solutions, whether gaseous, liquid, or solid, and the substance(s) present in the least amount is/are the solute (s). The solvent and the solute need not be in the same physical state, although the solvent's physical state typically dictates the nature of the solution. The solute is considered to be soluble in the solvent if they can combine to form a homogenous solution.

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Answer: 3

Explanation:

The pH of the solution is 5.4.

This is a basic buffer problem. The reaction in the buffer is:

C6H5NH3+ (aq) + H2O (l) ↔ C6H5NH2 (aq) + H3O+ (aq)

The Kb expression for the weak base C6H5NH2 is:

Kb = [C6H5NH2][H3O+] / [C6H5NH3+]

We can assume that the initial concentration of C6H5NH3+ and C6H5NH2 is equal to their original concentrations. Let x be the amount of H3O+ formed by the reaction. Then the new concentration of C6H5NH3+ is (0.100 - x) mol/L and the new concentration of C6H5NH2 is (0.500 + x) mol/L.

Now, we can set up the Kb expression and solve for x:

4.3 × 10-10 = [(0.500 + x)(x)] / (0.100 - x)

Solving this equation gives x = 3.76 × 10-6 M.

This means that the new concentration of H3O+ is 3.76 × 10-6 M, and the new pH is:

pH = -log[H3O+] = -log(3.76 × 10-6) ≈ 5.4

Therefore, the resulting pH when 0.040 mol of solid NaOH is added to the buffer is approximately 5.4.

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Answer:

The study of the human body as a machine for the performance of work has its foundations in three major areas of study—namely, mechanics, anatomy, and physiology; more specifically, biomechanics, musculoskeletal anatomy, and neuromuscular physiology. Explanation:

Answer:

Pls type your question in another manner cos I really cant decipher what you wrote the way you typed this pls

Answer:

C6H12

Explanation:

Molar mass of C =12.0 H=1.0

12x + 2(1x) = 84

x = 6

so it should be C6H12

The molecular formula of the compound will be C₇H₁₄.

The empirical formula of the compound gives the simplest ratio of the number of different elements present in a compound. The molecular formula of the compound provides the actual number of each element present in a compound. This formula is generally used and can be determined as a multiple of the empirical formula of a compound.

The empirical formula offers the ratio of the number of each atom in a given compound. The composition of a compound is directly determined by its empirical formula.

Given, the empirical formula of the compound is  CH₂.

The empirical formula mass of the compound = 12 + 2 = 14 g

The molar mass of the compound = 84 g

The multiple will be = 84/12 = 7

The molecular formula of the compound = (CH₂)₇ = C₇H₁₄

Therefore, the molecular formula of the compound is C₇H₁₄.

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Answer:

2m/s²

Explanation:

The initial acceleration of the wagon can be determined from;

      Force  = mass x acceleration

mass  = 50kg

Initial force applied  = 100N

  Now;

              100  = 50 x a

                 a = 2m/s²

So;

  When a force of 200N applied;

       200 = 50 x a

           a  = 4m/s²

Therefore, the wagon will quickly accelerate by 4 - 2 = 2m/s²

Answer:

10 electrons

Explanation:

The easiest way to do this is to simply look at the periodic table, find the atomic number of magnesium, and subtract 2 from it. The reason this works is that the atomic number tells you how many protons an element has. If we want the element to be neutral, then by definition it will have the same number of electrons.

Answer:

10 Valence Electrons

Explanation:

Easiest thing to do is to look at your periodic table :)

The total concentration of Ag₂CrO₄ that will dissolve in 10 mL of H₂O is: 0.713 mg.

Using the experimentally determined value of Ksp (1.6×10⁻¹⁰), we can calculate the amount of Ag₂CrO₄ that will dissolve in 10.0 mL of water.

The equilibrium expression for Ag₂CrO₄ is Ksp = [Ag⁺]²[CrO₄²⁻]. Assuming the concentration of Ag₂CrO₄ that dissolves is 'x' in moles per liter, we solve the equation:

Ksp = [Ag⁺]²[CrO₄²⁻]

1.6×10⁻¹⁰ = (2(2x))²(x).

Simplifying, we find x ≈ 2.154×10⁻⁴ M.

Multiplying this concentration by the volume of water (10.0×10⁻⁶ L), we get the amount of Ag₂CrO₄ dissolved as approximately 2.154×10⁻⁹ mol. Converting this to milligrams using the molar mass of Ag₂CrO₄ (331.74 g/mol) and converting grams to milligrams, we find that around 0.713 mg of Ag₂CrO₄ will dissolve in 10.0 mL of water.

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To determine the empirical formula of a compound, the given masses of the elements (carbon and oxygen) are used to calculate the moles of each element. The mole ratio between the elements is then determined to find the simplest whole number ratio, which represents the empirical formula.

First, we calculate the moles of carbon and oxygen using their respective molar masses. The molar mass of carbon (C) is approximately 12.01 g/mol, and the molar mass of oxygen (O) is approximately 16.00 g/mol.

Moles of carbon = 20.4 g / 12.01 g/mol ≈ 1.70 mol

Moles of oxygen = 54.4 g / 16.00 g/mol ≈ 3.40 mol

Next, we determine the simplest whole number ratio by dividing the number of moles of each element by the smallest number of moles. In this case, the smallest number of moles is approximately 1.70 mol (carbon).

Carbon: 1.70 mol / 1.70 mol ≈ 1

Oxygen: 3.40 mol / 1.70 mol ≈ 2

Therefore, the empirical formula for this compound is C1O2, which can be simplified to CO2.

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Lithium reacts with one atom of fluorine, and the atomic mass of fluorine is 38 amu.

The atomic mass of an element is the average mass of the atoms of an element measured in atomic mass unit.

One lithium (Li) atom can combine with one fluorine (F) atom. Together, they make the formula LiF.

Fluorine has seven electrons of it's own. Lithium gives up its one electron to make both atoms happy.

Hence, lithium reacts with one atom of fluorine, and the atomic mass of fluorine is 38 amu.

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Peroxides species shows the correct charge of the oxide ion.

As predicted by the two partially filled outer orbitals, oxygen assumes a negative oxidation state in all of its molecules. The oxide ion O2 is produced when electron transport fills these orbitals. It is thought that each oxygen in peroxides (species that contain the ion O2 2) has a charge of 1.

The carbon and hydrogen atoms have a slight positive charge, while the oxygen atom has a slight negative charge.

There are six valence electrons in the atom of oxygen. The oxygen atom requires two additional electrons in order to complete its valence shell. Adding two more electrons gives the oxygen ion a charge of two because each electron has a single negative charge.

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2-hexanone is more reactive than 3-hexanone.

The reactivity of a ketone can be influenced by the position of the carbonyl group relative to the alkyl substituents. In the case of 2-hexanone and 3-hexanone, the position of the carbonyl group differs.

2-hexanone has the carbonyl group located on the second carbon of the hexane chain, whereas 3-hexanone has the carbonyl group on the third carbon. The reactivity of ketones typically increases as the carbonyl group is closer to the end of the alkyl chain.

In this case, 2-hexanone has a more reactive carbonyl group than 3-hexanone because it is closer to the end of the carbon chain. The proximity to the end of the chain allows for greater accessibility and interaction with nucleophiles during reactions.

The increased reactivity of 2-hexanone can be attributed to the greater electronic and steric effects experienced by the carbonyl group, which make it more susceptible to nucleophilic attack or other chemical transformations compared to 3-hexanone.

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The hazardous substance in automobile exhaust that is also present in high concentration in tobacco smoke is acrolein.

Substance that tobacco smoke and the exhaust of automobiles contains a has it is substance called acrolein in very very high concentration.

Inhaling acrolein can give rise to several breathing problems like shortness in breathing and also irritation in lungs.

Acrolein is formed when the fats are overheated apart from automobiles and tobacco a very low amount of acrolein is also found in over used cooking oil.

To reduce acrolein from the automobile exhaust lead based adsorption substances are preferred to be used in automobile exhaust.

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d. helium, he

it's medical

So, the compounds formed from the given set of elements are \(H_{2}O\), ICl, and no compound for neon and calcium.

Assuming we form compounds using the following pairs: 1) oxygen and hydrogen, 2) chlorine and iodine, 3) neon and calcium, I can provide the following formulae:

1) Oxygen and hydrogen: When oxygen (O) and hydrogen (H) form a compound, they create water (\(H_{2}O\)). The formula for this compound is \(H_{2}O\).

2) Chlorine and iodine: When chlorine (Cl) and iodine (I) form a compound, they create iodine monochloride (ICl). The formula for this compound is ICl.

3) Neon and calcium: Neon (Ne) is a noble gas and does not form compounds under normal conditions. Calcium (Ca) typically forms compounds with non-metals, such as oxygen or halogens. Thus, there is no compound formed between neon and calcium.

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According to the research, the correct answer is that inner core and the outer core are geological layers of the Earth, which are similar in composition and both are extremely hot.

It refers to the innermost sector of the planet, being the layer formed mainly by iron and nickel whose internal pressure is higher than the pressure of the earth's surface.

In this sense, the inner core and outer core of the Earth are composed of iron-nickel or alloys thereof, with some other elements exhibiting high temperatures but unlike the solid inner core of the Earth, the outer core is liquid since there is not enough pressure to keep it in a solid state.

Therefore, we can conclude that according to the research, a wide range of concentrations of iron and nickel is found in the outer and inner core of the Earth.

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HBr, HCl, HClO₄, KBr and NaCl are all classified as strong electrolytes

HBr (hydrobromic acid), HCl (hydrochloric acid), HClO4 (perchloric acid), KBr (potassium bromide), and NaCl (sodium chloride) are classified as strong electrolytes because they dissociate completely or nearly completely into ions when dissolved in water.

In the case of HBr, HCl, and HClO₄, they are strong acids. When they dissolve in water, they release a high concentration of hydrogen ions (H⁺) and their respective anions (Br⁻, Cl⁻, and ClO₄⁻) which can conduct electric current.

KBr and NaCl, on the other hand, are strong ionic compounds. They dissociate completely into potassium (K⁺) and bromide (Br⁻) ions, and sodium (Na⁺) and chloride (Cl⁻) ions, respectively, when dissolved in water. These freely moving ions enable the solution to conduct electricity.

In summary, these compounds are classified as strong electrolytes because they readily produce ions in solution, allowing them to conduct electricity effectively.

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Answer:

hydrogen

Explanation:

Polarization is defined as the change in electrode potential of an electrode in an electrochemical cell as electric current is being passed through the cell. It is a kinetic deviation from equilibrium as current is passed through the electrochemical cell.

It is sometimes as a result of the over-potential caused by the accumulation of hydrogen gas at an electrode.

1. The best choice of reagent(s) to perform the given transformation is CH3OH and H2SO4.

2. This combination allows for the substitution of the halogen atom with the hydroxyl group, resulting in the desired product.

To determine the best choice of reagent(s) for a given transformation, we need to consider the desired reaction and the functional groups involved.

In this case, the transformation involves substituting a halogen atom (I, Br) with a hydroxyl group (OH). This type of reaction is known as a nucleophilic substitution.

Among the given options, CH3OH and H2SO4 provide the necessary conditions for nucleophilic substitution. The methanol (CH3OH) acts as the nucleophile, while the sulfuric acid (H2SO4) serves as a catalyst and provides the necessary conditions for the reaction to occur.

When CH3OH and H2SO4 are combined, the H2SO4 protonates the hydroxyl group of CH3OH, making it a stronger nucleophile. This facilitates the attack on the carbon-halogen bond, leading to the substitution of the halogen atom with the hydroxyl group.

The resulting product will be an alcohol (CH3OH) with the halogen atom replaced by the hydroxyl group.

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Answer:

nnnnnnnnnnnnnnnnnnnnnn

Explanation:

jhhhhhhhhhhhhhhhhbhhhh

Answer:

See Explanation

Explanation:

The rate of reaction means the same thing as the speed of a reaction. It refers to how quickly or slowly the reactants disappear or how quickly or slowly the products appear per unit time.

The equation of the reaction is; NO(g) + O3(g)→ NO2(g) + O2(g)

We can write differential equations to show the rate of disappearance of reactants or rate of appearance of products as shown below where the rate of reaction has been denoted as r;

r = -d[NO(g)]/dt = -d[O3(g)]/dt

OR

r = d[NO2(g)]/dt = d[O2(g)]

The negative signs shows that the concentration of reactants decreases with time while the positive sign shows that the concentration of products increases with time.

Increasing the pressure in the system would favor the forward reaction in the equilibrium, which is the production of Ni and CO gas.

According to Le Chatelier's principle, when a system at equilibrium is subjected to a change in pressure, it will shift to the direction that reduces the effect of the change.

In this case, increasing the pressure would cause the system to shift towards the side with fewer moles of gas, which is the side with solid Ni and CO gas.

Therefore, increasing the pressure would result in a higher rate of nickel production, as more Ni(CO)4 would be converted to Ni and CO gas. However, it is important to note that increasing the pressure beyond a certain point may not result in any significant changes in the rate of the reaction, as the equilibrium constant for this reaction may be reached at high pressures.

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