Hydrogen gas at a temperature of 22.0°C that is confined in a 5.00L cylinder exerts a pressure of 4.20atm. If the gas is released into a 10.0L reaction vessel at a temperature of 33.6°C, what will be the pressure inside the reaction vessel?

Explanation:

Because when you move the decimal point once, it it equal to 10 and to convert in the metric system, you must multiply or divide by 10. For example, when converting 4 centimeters to millimeters, you can multiply by 10 to get 40 millimeters or you can move the decimal point to the right and add another 0 to get 40.

Answer:

when you move tne decmal point it alwase ads up to ten

Explanation:

Answer:

the second one

Explanation:

because all of them are under

According to the Avogadro's constant;

1 mole of substance = 6.02 * 10^23molecules

Given the following parameters

moles of MgCl2 = 2.301moles

The amount of molecules that are in 2.301moles of MgCl2 will be:

To create molecules, atoms combine. Two hydrogen (H) atoms and one oxygen (O) atom make up a water molecule's three atoms. H2O is a common abbreviation for water because of this.

The smallest unit of a material that keeps its content and characteristics is a molecule, which is made up of two or more atoms linked together by chemical bonds. The building blocks of chemistry are molecules.

The phrase "the molecules of life" frequently refers to these four categories of molecules. Proteins, carbohydrates, lipids, and nucleic acids make up the four basic building blocks of life. Every single life on Earth depends on one or more of the four categories. These four molecules are necessary for a cell and an organism to exist.

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Answer: No.

Explanation:

The freezing point if 30% ethylene glycol is around -14.7°C, so the plane cannot take off even if it was de-iced. Jet fuel has a very low freezing temperature of around -40°C, but the fuel cannot be the only thing unfrozen for the plane to continue on successfully. If you alter the ethylene glycol concentration to 60%, however, the freezing point drops to -60°C, which would be perfect for this scenario. This happens because the hydrogen bonds that have to form between the water molecules to freeze are interrupted by ethylene glycol molecules, and vice versa.

Answer:

c

Explanation:

use %composition given to calculate emperical 4mular

The empirical formula of the compound having 57.5% Na, 40.0% O, and 2.5% H is NaOH (Option C)

Divide by their molar mass

Na = 57.5 / 23 = 2.5

O = 40 / 16 = 2.5

H = 2.5 / 1 = 2.6

Divide by the smallest

Na = 2.5 / 2.5 = 1

O = 2.5 / 2.5 = 1

H = 2.5 / 2.5 = 1

Thus, the empirical formula of the compound is NaOH

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The ideal gas law may be used to determine the volume of oxygen created in the electrolysis that produces 548 litres of hydrogen at STP (Standard Temperature and Pressure). PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature, according to the ideal gas equation.

The pressure is 1 atm, the temperature is 273 K, and the number of moles of hydrogen is 548/22.4 = 24.5 in this example. We may compute the volume of oxygen created by rearranging the ideal gas law: V = nRT/P = 24.5*0.082*273/1 = 483.3 litres.

As a result, the volume of oxygen created in the electrolysis at STP that produces 548 litres of hydrogen is 483.3 litres.

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Answer:

True

Explanation:

The arrangement of three groups COOH, CO, OH in the order of reducing boiling point is as follow -

 COOH > OH > CO

COOH gets strongly polarised due to the presence of electron withdrawing carboxy group and hence have strong H+ bonds as compared to that of alcohol.

Hence the given statement is true.

Answer:

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Answer:

B. Litmus paper

Explanation:

The test for chlorine can use either type of litmus paper, but blue litmus paper is used most commonly. The litmus paper must be damp - the water dissolves some of the chlorine so that it can react with the indicator on the litmus paper. This test shows that chlorine is a powerful bleach.

The water cycle, also known as the hydrologic cycle, is the continuous movement of water on, above, and below the surface of the Earth.

The water cycle involves a series of physical processes, including evaporation, condensation, precipitation, and runoff, that work together to move water from one location to another and to maintain the balance of water on Earth.

The water cycle begins when water from oceans, lakes, rivers, and other bodies of water evaporates into the atmosphere due to the heat from the sun. As water vapor rises into the atmosphere, it cools and condenses into clouds. When the clouds become saturated with water vapor, precipitation occurs in the form of rain, snow, sleet, or hail.

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Answer: it's nonmetal

Explanation: Sulfur has characteristics of nonmetals. It does not have luster, it cannot conduct electricity, and it is brittle. On the periodic table, sulfur is in group 16/VIA, in the third period. The group is called the oxygen group or the chalcogens.

Answer:

i dont know

Explanation:

Answer:

The answer is

Explanation:

We must first find the mass using the density and the volume given in grams before converting to pounds.

To find the mass of a substance given the density and volume is

From the question

volume = 236 mL

Density = 1.03 g/mL

Substitute the values into the above formula and solve

That's

mass = 1.03 × 236 = 243.08 g

Now we use the conversion

1 g = 0.0022 lb

if 1 g = 0.0022 lb

Then 243.08 = 243.08 × 0.0022

We have the final answer as

Hope this helps you

Answer:

63.2 mA

Explanation:

We all know that:

Current\(I = \dfrac{Q}{t}\)

which can be further expressed as:

\(I = \dfrac{ne}{t}\)

where;

n = number of electrons

e = charge on electrons

t = time (second)

Then; by replacing the values in the question, we have:

\(\dfrac{(9*10^{-4})\times6\times10^{23}\times1.6\times10^{-19}}{22.8\times60}\)

\(= 0.06316 A \\ \\ \mathbf{I= 63.2 \ mA}\)

This cooled sugar solution has glassy in luster & fracture pattern, aphanitic in regard to crystal, or vesicular. Glass, a wooden cutting board, or an aluminum baking dish are typical of these materials.

Several soft materials, such as microparticles, foams, emulsions, or other complex fluids, exhibit glassy behavior, including plastics, superalloys, magnetic spin spectacles, disordered conductors, and many soft materials. Glassy phenomena are also present in very many biology, most notably protein.

This rock has a glassy appearance if it resembles a slab of (colored) glass and lacks mineral crystals that may be seen. The glassy texture gives the impression that cooling was so rapid that no crystalline could form.

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Valence electrons are electrons found in the valence shell of atoms and they determine the reactivity of the atom.

Valence electrons refers to the electrons which are found in the outermost or valence shell of atoms.

Electrons are easily removed or added to the valence shell of atoms.

Therefore, valence electrons determine the reactivity of atoms.

This implies that atoms with few or almost full valence electrons are very reactive.

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Answer:

The balanced equation for the reaction of aqueous calcium chloride and sodium carbonate solutions is:

CaCl2(aq) + Na2CO3(aq) → 2NaCl(aq) + CaCO3(aq)

CaCl2 and Na2CO3 are the reactants in this equation, whereas NaCl and CaCO3 are the products. The coefficients are balanced such that each element has an equal amount of atoms on both the reactant and product sides of the equation.

(it might be wrong, super sorry!)

Answer: Pentane C5H12

Explanation:

The boiling point of a substance is simply defined as the temperature whereby a liquid's vapor pressure is equal to the pressure that is surrounding the liquid and hence, the liquid will changes into vapor.

The likely molecular formula for this compound is Pentane i.e C5H12 due to the fact that its boiling point is between Butane with formula C4H10 and Hexane with formula C6H14 boiling points.

The molecular formula of the of the substance is \(\bold {C_5H_1_0}\) (pentane).

Boiling point:

It is the temperature at which liquid's vapor pressure is equal to the pressure that is surrounding the liquid and hence, the liquid start to into vaporize.

The boiling point of the given compound is 309 K which is between Butane  and Hexane.

Therefore, the molecular formula of the of the substance is \(\bold {C_5H_1_0}\) (pentane).

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The chemical element in group one that is also a member of period 2 is lithium.

The chemical element in group one that is also a member of period 2 is lithium therefore, the element referred to here is lithium. Group 1 has only one valence electron. If we add one to 23, we will have 24 and the element is chromium.

For question three, the focus is on period 5, five groups to the previous answer will give us the element molybdenum. The atomic number of Mo is 42 and its mass number 96 hence it has 54 neutrons. The element that has atomic number 54 is Xe.

The element that has atomic mass 43 which is reversal of the atomic number of the former answer is scandium.

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Answer:

0.60 moles of atoms of carbon

Explanation:

Step 1: Given data

Step 2: Calculate the number of carbon atoms in the given sample

According to the chemical formula of the compound, the molar ratio of C to O is 2:6, that is, there are 2 moles of atoms of C every 6 moles of atoms of O. The number of moles of atoms of C is:

1.8 mol O × 2 mol C / 6 mol O = 0.60 mol C

The machine exerts a force of 9 newtons on the baseball to accelerate it from 0 m/s to 30 m/s in 0.5 seconds.

To calculate the force exerted by the machine on the baseball, we can use Newton's second law of motion, which states that force (F) is equal to the product of mass (m) and acceleration (a).

In this case, the acceleration can be determined using the formula a = (v - u) / t, where v is the final velocity, u is the initial velocity, and t is the time taken for the acceleration.

Given:

Mass of the baseball (m) = 0.15 kg

Initial velocity (u) = 0 m/s (as the baseball starts from rest)

Final velocity (v) = 30 m/s

Time (t) = 0.5 s

First, let's calculate the acceleration:

a = (v - u) / t

a = (30 m/s - 0 m/s) / 0.5 s

a = 60 m/s^2

Now, we can use the calculated acceleration and the given mass to determine the force:

F = m * a

F = 0.15 kg * 60 m/s^2

F = 9 N

The machine exerts a force of 9 newtons on the baseball. This force is calculated using Newton's second law of motion, which states that force is equal to mass multiplied by acceleration.

By determining the acceleration of the baseball using the formula a = (v - u) / t and substituting the given values, we find that the acceleration is 60 m/s^2. Multiplying the mass of the baseball (0.15 kg) by the acceleration gives the force exerted by the machine as 9 newtons.

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Answer:5 to the 7th power

Explanation:

Divided 7 and y then add 4

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 5.33×10²⁴moles are in 3.21×10²⁸ molecules of Nitrogen.

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity of amount of substance. It measure the number of elementary entities of a given substance that are present in a given sample.

Given number of molecules of nitrogen=3.21×10²⁸ atoms

we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number

mole of nitrogen=given number of atoms ÷ 6.022×10²³(Avogadro number)

Substituting the values

moles of nitrogen=3.21×10²⁸ ÷ 6.022×10²³

mole of nitrogen= 5.33×10²⁴moles

Therefore, 5.33×10²⁴moles are in 3.21×10²⁸ molecules of Nitrogen.

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Answer:c

Explanation:c

Based on the IUPAC nomenclature of organic compounds, the name of the molecule is 5-ethyl-3-octenal.

The IUPAC nomenclature is the naming convention adopted by the International Union of Pure and Applied Chemistry.

In the naming of organic compounds, the name is divided into three parts;

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Answer:

The law of conservation of mass states that in a chemical reaction mass is neither created nor destroyed. ... The carbon atom changes from a solid structure to a gas but its mass does not change. Similarly, the law of conservation of energy states that the amount of energy is neither created nor destroyed.

The correct statement is 'the mass of reactants is equal to the mass of the products'.

Explanation:

So, from this we can conclude that the from the given statements the correct statement is 'the mass of reactants is equal to the mass of the products'.

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The Rf value for the blue component is approximately 0.333, and the Rf value for the red component is 0.2.

The Rf value, or the retention factor, is a ratio used in chromatography to quantify the migration distance of a component relative to the migration distance of the solvent front. It is calculated using the formula:

Rf = (distance moved by the component) / (distance moved by the solvent front)

Given the information provided:

Distance moved by the blue component = 5 cm

Distance moved by the red component = 3 cm

Distance moved by the solvent front = 15 cm

Now we can calculate the Rf values for the blue and red components:

Rf_blue = (distance moved by the blue component) / (distance moved by the solvent front)

        = 5 cm / 15 cm

        = 1/3

        ≈ 0.333

Rf_red = (distance moved by the red component) / (distance moved by the solvent front)

       = 3 cm / 15 cm

       = 1/5

       = 0.2

Therefore, the Rf value for the blue component is approximately 0.333, and the Rf value for the red component is 0.2.

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The field of chemistry that explains why bromine trifluoride reacts differently than water vapor during a reaction is called chemical kinetics.

What is Energy?

Energy is a fundamental concept in physics, often defined as the ability to do work. It can take many different forms, including thermal energy, kinetic energy, potential energy, electromagnetic radiation, and chemical energy, among others. Energy can be transferred from one system to another, and it can also be converted from one form to another. The SI unit of energy is the joule (J), although other units such as the calorie and the electronvolt are also used in specific contexts.

The field of chemistry that explains why bromine trifluoride reacts differently than water vapor during a reaction is called reaction kinetics. Reaction kinetics is the study of how fast chemical reactions occur and what factors affect the reaction rate. It takes into account factors such as the nature of the reactants, concentration, temperature, surface area, and the presence of a catalyst or inhibitor.

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