When bromination occurs in the presence of water what happens?

To impose pressure equivalent to that of a 760.0 mm column of mercury, a column of water must be 10336mm tall, or 10.3m. Per unit area, pressure is the force exerted perpendicularly to an object's surface.

That force is dispersed across. The gauge pressure, also known as gauge pressure, is the pressure in relation to the surrounding air pressure. To express pressure, a variety of units are employed. Mercury is the smallest and sun-closest planet in the solar system. The quickest of all the planets that orbit the Sun, its orbit lasts 87.97 Earth days.

76*13.6*g = h*1*g

h = 76*13.6 = 10.3m

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Answer:

elements and compounds

Explanation:

Elements and compounds are the two types of pure substances. Examples of common elements include carbon, nitrogen and hydrogen. They consist of one type of atom and cannot break down into something else. Every pure carbon substance, for example, has the same particles in it.

Answer:

c

Explanation:

The innate immune system is the body's first line of defense against germs entering the body. It responds in the same way to all germs and foreign substances, which is why it is sometimes referred to as the "nonspecific" immune system

Answer:

B. Free water

Answer:

Hydrochloric acid + sodium hydroxide -> sodium chloride + water

Sulphuric acid + copper hydroxide -> copper sulphate + water

Nitric acid + sodium hydroxide -> sodium nitrate + water

Hydrochloric acid + calcium hydroxide -> calcium chloride + water

Sulphuric acid + potassium hydroxide -> potassium sulphate + water

Hydrochloric acid + lithium hydroxide -> lithium chloride + water

Nitric acid + magnesium hydroxide -> magnesium nitrate + water

Answer:

the answer is b

Explanation:

i had the same question

Answer:

Convergent

Explanation:

They converge

Answer:

Outer planets are significantly colder than other planets! The answer is B.

Explanation:

The main difference between inner and outer planets is that inner planets have a high temperature compared to outer planets.

Explanation:

The Higgs boson was proposed in 1964 by Peter Higgs, François Englert, and four other theorists to explain why certain particles have mass. Scientists confirmed its existence in 2012 through the ATLAS and CMS experiments at the Large Hadron Collider (LHC) at CERN in Switzerland.

To find the mole fraction of He in the gas, we first need to calculate the total number of moles of gas in the sample. Since 6.02x10^23 atoms make up one mole of gas, we can calculate the number of moles in the sample by dividing the number of atoms by Avogadro's number:

6.02x10^23 atoms / 1 mole = 2.0 moles of gas

Next, we need to calculate the mole fraction of He in the gas. This is the ratio of the number of moles of He to the total number of moles of gas in the sample:

Mole fraction of He = moles of He / total moles of gas
Mole fraction of He = 6.02x10^19 / 2.0
Mole fraction of He = 3.01x10^19

Finally, to express the mole fraction in parts per million (ppm), we need to multiply by 10^6:

Mole fraction of He (in ppm) = 3.01x10^19 x 10^6
Mole fraction of He (in ppm) = 3.01x10^25 ppm

Therefore, the mole fraction of He in the gas sample is 3.01x10^25 ppm.
Hi! I'd be happy to help you with your question. To find the helium (He) mole fraction in parts per million (ppm), follow these steps:

1. Calculate the total number of moles of gas: We are given that there are 2.0 moles of gas in total.
2. Calculate the moles of He atoms: We are given 6.02 x 10^19 He atoms. To convert atoms to moles, divide by Avogadro's number (6.022 x 10^23 atoms/mol):
  (6.02 x 10^19 atoms) / (6.022 x 10^23 atoms/mol) ≈ 0.0001 mol He.
3. Calculate the mole fraction of He: Divide the moles of He by the total moles of gas:
  (0.0001 mol He) / (2.0 mol gas) = 0.00005.
4. Convert the mole fraction to ppm: Multiply the mole fraction by 1,000,000:
  0.00005 x 1,000,000 = 50 ppm.

So, the helium mole fraction in the given gas mixture is approximately 50 ppm.

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Answer:

o

Explanation:

Answer

19.7971 g Li₂O

Procedure

To solve this question we first need to verify if the equation is balanced. In this case, it is already balanced.

4Li(s)+O2(g)→2Li₂O(s)

Then we will need to convert the grams of both reagents to moles using the molecular weight, in order to use the stoichiometry of the reaction.

Then we determine the limiting reagent by stoichiometry as follows:

Given that the lowest value comes from molecular oxygen, this will be the limiting reagent.

Then we use the value from the molecular oxygen and convert it into grams.

Answer:

Answer:

There are three products;carbon(IV)oxide,water and dinitogen and the number of molecules are given

Answer:

"The polar regions have long winters and short, cool summers."

Explanation:

Climate is the average of that weather. The climate record also includes extreme values such as record high temperatures or record amounts of rainfall.

For Climate example:

You can expect snow in the Northeast in January or for it to be hot and humid in the Southeast in July.

When drawing the Lewis structure of a molecule, start by determining the total number of available valence electrons based on each element's group number. Then, use the total number of electrons needed for each element to be stable, generally based on its charge, to determine the ionic charge by finding the difference between the number of needed and available electrons divided by two.

For example, for a neutral oxygen atom in Group 6A or 16, it has six valence electrons. To achieve a stable octet, it needs two more electrons, which makes its ionic charge -2. Similarly, a nitrogen atom in Group 5A or 15 has five valence electrons, and it needs three more electrons to achieve a stable octet, which makes its ionic charge -3.

Once you have determined the ionic charges for each element in the molecule, you can start constructing the Lewis structure by placing the atoms in a way that satisfies the octet rule, where each atom (except hydrogen) has eight electrons in its outermost shell

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Part A: The step in glycolysis where the first ATP molecule is hydrolyzed is the conversion of ATP to ADP during the phosphorylation of glucose to glucose-6-phosphate.

Part B: The step in glycolysis where direct substrate phosphorylation occurs is the conversion of ADP to ATP during the formation of 1,3-bisphosphoglycerate from glyceraldehyde-3-phosphate.

Part C: The step in glycolysis where a six-carbon sugar splits into two three-carbon molecules is the conversion of fructose-1,6-bisphosphate to glyceraldehyde-3-phosphate and dihydroxyacetone phosphate. This step is catalyzed by the enzyme aldolase, which cleaves fructose-1,6-bisphosphate into two three-carbon molecules.

One molecule is glyceraldehyde-3-phosphate, while the other is dihydroxyacetone phosphate. These two molecules can be interconverted through the action of the enzyme triose phosphate isomerase to ensure that glycolysis can proceed further. Ultimately, both molecules continue through the glycolytic pathway to generate ATP and other high-energy compounds.

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Answer:

The calculation of the molecular mass of A​ is 64.

Molar mass is described as the mass in grams of 1 mole of a substance. The units of molar mass are grams in line with mole, abbreviated as g/mol. The mass of a single isotope of any given detail (the isotopic atomic mass) is a cost touching on the mass of that isotope to the mass of the isotope carbon-12.

Calculation:-

mass A = 0.2 g

mass B  = 0.16 g

vapour density = 32

molar mass = 2 × VD

                   = 64.

In chemistry, the molar mass of a chemical compound is defined as the mass of a pattern of that compound divided by using the amount of substance which is the range of moles in that sample, measured in moles. The molar mass is a bulk, now not molecular, belongings of a substance.

Molecular mass and system mass are typically used as a synonym of molar mass, specifically for molecular compounds; but, the maximum authoritative resources outline it differently.

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Answer:

Endothermic is identified if the process requires heat as a reactant, since endothermic means "intake of heat", so it has to take in some type of heat.

Answer:

Explanation:                                                                                        

The warm water provides moisture for hurricanes so that hurricanes are strongest over water, and become weak when they reach land.

Hurricanes are forceful winds in the air which are able to destroy even a land completely. One of the most destructive forces on earth is the hurricane. Although the process of a origin of  hurricane is complex.

They need water that is at least 80 degrees first. Air that is wet is the second component. Finally, for a hurricane to form, there must be convergent winds.

A group of thunderstorms moving across the ocean's surface signal the start of the real process. Similar to how a straw absorbs liquid, when the surface water is heated, the storm absorbs heat energy from the water. The air becomes moistened as a result.

The storm can develop into a hurricane if the wind conditions are right. The fuel is this thermal energy. Hence, option c is correct.

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The thermal velocity of the atom in the given atmosphere would be approximately 2044.35 m/s.

The thermal velocity of an atom can be calculated using the formula:

v = sqrt((3kT) / m)

Where:

v is the thermal velocity of the atom,

k is the Boltzmann constant (1.38 x 10^-23 J/K),

T is the temperature in Kelvin,

m is the mass of the atom.

In this case, we have a temperature of 290.00 K and the atom is 4.00 times more massive than hydrogen. Let's assume the mass of a hydrogen atom is approximately 1 atomic mass unit (u) or 1.67 x 10^-27 kg.

The mass of the atom in question would be 4.00 times the mass of hydrogen, which is 4.00 * 1.67 x 10^-27 kg = 6.68 x 10^-27 kg.

Plugging these values into the formula, we get:

v = sqrt((3 * 1.38 x 10^-23 J/K * 290.00 K) / (6.68 x 10^-27 kg))

Calculating the thermal velocity gives:

v ≈ 2044.35 m/s

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(a) To reach the equivalence point, 38.46 mL of NaOH solution is needed.

(b) The concentration of the HCl solution is 0.84 M.

(a) At the equivalence point, the moles of HCl are equal to the moles of NaOH. The balanced chemical equation for the reaction between HCl and NaOH is:

HCl + NaOH → NaCl + H₂O

Number of moles of NaOH = 0.65 M x volume of NaOH solution in liters = 0.65 M x volume of NaOH solution in mL / 1000 mL/L

Number of moles of HCl = Number of moles of NaOH

Concentration of HCl = Number of moles of HCl / Volume of HCl solution in liters = Number of moles of NaOH / 25 mL / 1000 mL/L

Number of moles of NaOH = Number of moles of HCl

0.65 M x volume of NaOH solution in mL / 1000 mL/L = Number of moles of NaOH / 25 mL / 1000 mL/L

volume of NaOH solution in mL = Number of moles of NaOH x 25 mL x 1000 mL/L / 0.65 M

volume of NaOH solution in mL = 9.615 mL x 4 = 38.46 mL

(b) Now that we know the volume of NaOH solution needed to reach the equivalence point, we can calculate the concentration of the HCl solution using the formula:

Concentration of HCl = Number of moles of HCl / Volume of HCl solution in liters

Number of moles of HCl = Number of moles of NaOH at the equivalence point

Number of moles of NaOH at the equivalence point = 0.65 M x 38.46 mL / 1000 mL/L = 0.025 mol

Number of moles of HCl = 0.025 mol

Volume of HCl solution in liters = 25 mL / 1000 mL/L = 0.025 L

Concentration of HCl = 0.025 mol / 0.025 L = 1.0 M

However, the initial volume of HCl solution was 25 mL, not 1 L. Therefore, we need to adjust the concentration of HCl:

Concentration of HCl = 1.0 M x 25 mL / 1000 mL/L = 0.025 M

Thus, the concentration of the HCl solution is 0.84 M.

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n = 0.100 moles

At STP (standard temperature pressure), where gas is collected, the temperature is 0°C and the pressure is 1 atm.

\(\\$\therefore$ Temperature $(T)=0^{\circ} \mathrm{C}=0^{\circ}+273\)

                              \(=273K\)

          \(Pressure $(P)=1$ atm.\)

The ideal gas equation indicates that

\(\begin{aligned}& P V=n R T \Rightarrow V=\frac{n R T}{P} \\\therefore & R=\text { gas constant }=0.0821 \mathrm{~L} \cdot \mathrm{cetm} / \mathrm{mo} / \cdot K\end{aligned}\)

 \(\begin{aligned}&V=\frac{0.100 \mathrm{~mol} \cdot \times 0.0821 \mathrm{~L} \cdot \mathrm{atm} / \mathrm{mol} . \mathrm{K} \times 273 \mathrm{~K}}{1 \mathrm{~atm}} \\&V=\frac{2.24 L}{1}\end{aligned}\\\)

\(V=2.24L\)

Group of answer choices \(2.44L\) .The volume occupied by  mole of a given gas at a given temperature and pressure is expressed as the gas's molar volume.

The most typical illustration is the molar volume of a gas at STP, which is equal to \(2.44L\) for \(1\) mole of any ideal gas at a temperature of \(273.15\) Kand a pressure of \(1\) atm.

Hence, the volume of the gas is \(2.24L\).

A unit is stated to have a temperature of absolute zero \((273 Kelvins)\) and an atmospheric pressure of one atmosphere, or \(1\) atm, at standard temperature and pressure. Additionally, at STP, a mole of any gas takes up \(22.414 L\) of space. Keep in mind that this idea only applies to gases.

For experimental measurements to be established under standard conditions that allow for comparisons between various sets of data, standard temperature and pressure must be met.

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In the reduction of benzophenone into diphenylmethanol experiment, the expected change regarding the spots on the TLC plate is that the spot of the product (diphenylmethanol) will have a smaller Rf (retention factor) value as compared to the spot of the reactant (benzophenone).

This is because the product is more polar than the reactant, and hence it will tend to stick more to the stationary phase of the TLC plate, resulting in a lower Rf value.

It is important to note that Rf value is calculated as the ratio of the distance travelled by the compound from the starting point to the distance travelled by the solvent front from the starting point.

As the product diphenylmethanol is more polar than the reactant benzophenone, it will travel a shorter distance on the TLC plate than benzophenone, resulting in a lower Rf value. Thus, we can conclude that the spot will have a smaller Rf value as the product is being formed in comparison to the Rf value of the reactant.

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Answer:

Hcl

Explanation:Idfk :))Bună ziua. La pagina 169 aveți o altă piesă de teatru. Vă rog să o citiți și să răspundeți la întrebările 1,2,4,7,8/ pag. 170.

Sper că vă scrieți toate lecțiile în caiet! Sunt copii care încă nu mi-au trimis nicio temă. Vă rog să vă mobilizați! Când ne întâlnim vă verific caietele. Mult spor!

phosphoric and citric acids

Answer:

Explanation:

Answer:

+6

+6

+6

+6

+6

+6answer given

thanks

The elements arranged in increasing order of the most positive electron affinity for each group are:

(a) Li, Na, K

(b) I, Br, Cl, F

(c) Ba, Ca, Si, P, O

(a) Li, Na, K: In this group, the electron affinity increases as we move from left to right in the periodic table. Therefore, the elements arranged in increasing order of the most positive electron affinity are Li, Na, and K.

(b) F, Cl, Br, I: In this group, the electron affinity generally increases as we move from left to right and from bottom to top in the periodic table. Therefore, the elements arranged in increasing order of the most positive electron affinity are I, Br, Cl, and F.

(c) O, Si, P, Ca, Ba: In this group, the electron affinity generally increases as we move from left to right and from top to bottom in the periodic table. Therefore, the elements arranged in increasing order of the most positive electron affinity are Ba, Ca, Si, P, and O.

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Answer:

When you bake a cake, the ingredients go through a chemical change. A chemical change occurs when the molecules that compose two or more substances are rearranged to form a new substance! When you start baking, you have a mixture of ingredients. The flour, egg, sugar,

Explanation:

The correct option among the following is (c) it includes the balanced chemical reaction and the change in enthalpy value is true of a thermochemical equation.

A thermochemical equation is a chemical equation that depicts the complete thermochemical reaction. It contains the balanced equation and a written interpretation of the net energy change.

The term "enthalpy of reaction" refers to the heat energy released or absorbed in a chemical reaction at a constant pressure.

Thermochemical equations are written in the same way as chemical equations, with the exception that they also include the change in enthalpy value (ΔH) for the reaction.

The change in enthalpy value reflects the energy absorbed or released by the reaction in the form of heat.

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