At 20°C, the volume of chlorine gas is
15dm3. Compute the resulting volume
if the temperature is adjusted to 318K
provided that the pressure remains
the same.

Given:
Unknown:
Formula:
Solution:
Final Answer:​

Population density is the number of specific organisms living in a particular area. The tectonic plate movements in the Ring of Fire area can cause volcanic eruptions and earthquakes.

Tectonic plates are the parts of the crust and the mantle of the earth layer that is also called the lithosphere plate. They are not stationary and have slight movements on the mantle which comprises the hot lava.

The movement of these tectonic plates in the area of the Ring of fire causes the eruption of the lava and disrupts the crust causing an earthquake. This consequence affects the life habiting them.

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Answer:

im pretty sure because the plates move which causes these natural disasters

Explanation:

Mass of H2CO3 = 1.05g

Givens: NaHCO3 = 3.24

Na2CO3 = 2.19

Mass of H2CO3 = mass of NaHCO3 - mass of Na2CO3

Mass of H2CO3 = 3.24g - 2.19g

Mass of H2CO3 = 1.05g

The number of protons and the number of neutrons combine to determine the mass number of an element. Mass number = proton + neutron. If you want to calculate the number of neutrons an atom has, you can simply subtract the number of protons or atomic numbers from the mass number.

Divide the mass of a substance in grams by the molecular weight. This will give you the number of moles of the substance in a particular mass. For 12 g of water, (25 g) / (18.015 g / mol) = 0.666 mol.

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The amount, in grams, of HCl that are in 25.0 grams of concentrated hydrochloric acid will be 9.5 grams

Every concentrated HCl contains 38% HCl by mass. This means that 38 grams of HCl would be in every 100 grams of concentrated HCl.

There, for 25.0 grams concentrated HCl, the amount of HCl can be calculated as:

         38/100 x 25.0 = 9.5 grams

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39200 mL of a 14.0 M [tex]HNO_3[/tex] solution should you use to make 840.0 mL of a 0.300 M [tex]HNO_3[/tex] solution.

The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilograms of carbon 12; its symbol is “mol”.

Solution:

[tex]M_1V_1 = M_2V_2[/tex]

In this case, [tex]M_1[/tex] = 840.0 mL, [tex]V_1[/tex]= 14.0 M , [tex]M_2[/tex]= 0.300 M

Substituting the value in the equation:

[tex]V_2[/tex] = [tex]\frac{840.0 X 14.0}{0.300}[/tex]

= 39200 mL

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The amount of absorption force is not same at all time and at all where .

It has difference at different time periods

So during those the curve goes up and down and repeat this flow

So there are dips

Answer:

815.59

Explanation:

Assuming no heat lost to the Surrounding

Total heat lost by granite = Total heat gained by water

mc∆T of granite = mc∆T of water

m x 0.79 x (54.1 - 29.2) = 467.62 x 4.184 x (29.2 - 21.0)

m x 19.671 = 16043.48106

m = 16043.48106/19.671

= 815.59J

Answer:

See below

Explanation:

The large bar magnet is positioned with S on the Left

  the small magnet will position itself similar this with N on the right   S on the left   (opposites attract)

Answer:

pH = 2.38

Explanation:

Recall that HCl is a strong acid and hence dissociates completely into H⁺ and Cl⁻ ions. Thus, the solution's H⁺ concentration is equivalent to the acid concentration. That is, [H⁺] = 4.2 × 10⁻³ M.

Therefore, the pH of the solution is:

[tex]\displaystyle \begin{aligned}\text{pH} & = -\log[\text{H}^+] \\ \\ & = -\log (4.2\times 10^{-3}) \\ \\ & = 2.38\end{aligned}[/tex]

Answer:

HCl + H[tex]\\ 2[/tex]O —> Cl- + H[tex]\\ 3[/tex]O+

pH = -log [H[tex]\\ 3[/tex]O+] = -log [4.2 x 10^-3] = 2.38

—

We assume that hydrochloric acid will undergo complete dissociation in water to give stoichiometric H3O+ ion, according to the given reaction.

—

Have a nice day!!

Answer: See attached image

Explanation:

Answer: The new volume of the balloon will be 4.45L

Explanation: We will solve this question through the concept of Charles's law. The law states that the volume of a gas is directly proportional to the absolute temperature, assuming the quantity of gas and pressure remain constant.

Answer:

The Five Dynasties and Ten Kingdoms (907-960) is a period of great division in Chinese history, and is also the collective name for the Five Dynasties and the Ten Kingdoms.

The Five Dynasties refer to the five regimes located in the Central Plains that were successively replaced after the fall of the Tang Dynasty, namely Later Liang, Later Tang, Later Jin, Later Han and Later Zhou. At the end of the Tang Dynasty, the Five Dynasties and the beginning of the Northern Song Dynasty, there were many separatist regimes outside the Central Plains, among which more than ten separatist regimes such as the former Shu, the latter Shu, and the Northern Han were collectively referred to as the Ten Kingdoms.

Explanation:

Answer:

Mongol Yuan dynasty.

Explanation:

At constant temperature, if the pressure is compressed to the given value, the volume of the nitrogen gas increases to 23.2L.

Boyle's law simply states that "the volume of any given quantity of gas is inversely proportional to its pressure as long as temperature remains constant.

Boyle's law is expressed as;

P₁V₁ = P₂V₂

Where P₁ is Initial Pressure, V₁ is Initial volume, P₂ is Final Pressure and V₂ is Final volume.

Given that;

P₁V₁ = P₂V₂

V₂ = P₁V₁ / P₂

V₂ = (0.98atm × 22.5L) / 0.95atm

V₂ = 22.05Latm / 0.95atm

V₂ = 23.2L

Therefore, at constant temperature, if the pressure is compressed to the given value, the volume of the nitrogen gas increases to 23.2L.

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The resin may be regenerated by washing it again with water and making it safe for use again.

Elution and regeneration are important processes in the treatment of water. The waste water is eluted through an ion exchange resin in which exchange of ions takes place.

The resin may be regenerated by washing it again with water and making it safe for use again.

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Atoms are the indivisible particles of matter. Atoms, molecular mass, and moles can be related by the Avogadros number. There are 2.00 × 10²⁵ atoms of neon in the sample.

The mass of the substance is the multiplication product of the moles and the molar mass.

We know, that 1 mole = 6.022 x 10²³ atoms

From the Avogadro's number, mass, and the molar mass the number of atoms is calculated as:

(6.022 x 10²³ atoms ÷ 1 mole Neon) × (1 mole Neon ÷ 20.18g) × ((6.73x10²)g Ne) = 2.00 × 10²⁵ atoms.

Therefore, 2.00 × 10²⁵ atoms of neon are present in the sample.

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Answer:Nitrogen can be transformed into oxygen by bombarding an alpha particle into the nucleus of nitrogen. An atom of hydrogen is produced as part of the transformation. Aluminum is transformed into phosphorous by combining the nucleus with an alpha particle

Explanation:

Explanation:

If 14.0 g of sodium sulfide are reacting, how many molecules of sodium chloride will be produced?

3 Na₂S + 2 AICI36 NaCl + Al2S3

1.08 x 10^23

2.16 x 10^23

2.16 x 10^-23

5.97 x 10^-25

The electron affinity of the 5th group increases down the groups of the periodic table because the electrons are placed in a higher energy level far from the nucleus.

Electron affinity is the energy released when an electron is attached to an atom or molecule.

Electron affinity is used as a measure of its ability to form an anion.

The electron affinity of elements decrease down the group and increase from left to right across the periodic table because the electrons are placed in a higher energy level far from the nucleus.

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Answer:

one factor is the speed at which crystals are formed

crystals that are formed near or on the surface tend to crystalize faster and therefore are usually smaller crystals deeper in the crust tend to crystalize slower and therefore are larger

Answer:

K₂Cr₂O₇

Explanation:

Finding % of O

Steps

Solving

We have 26.56g of K, 34.51g of Cr, and 39.93g of O

The empirical formula is K₂Cr₂O₇

Answer:

b) heating, cooling

Explanation:

Heating will favour dissolution (it helps dissolving faster).

Cooling helps in crystallization.

Answer:

It's the third option.

Explanation:

In order for the chemical equation to be correctly it needs the same number of atoms of each element on both sides of the equal sign

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

Arrow head shows the direction of products formed in a reaction. so we can say that it denotes the direction of the chemical reaction. I.e From Reactant to Product.

so, the correct choice is B