Find the volume of 8 gram of oxygen gas​

To make sure that all of the atoms in the following equation are balanced, we must multiply CaO by a coefficient of 2.

2CaO+Al2O3+SiO2---->Ca2Al2Si O7

atomic oxygen: One example of a neutral oxide is water. There is no acid or base in water. Carbon monoxide, nitric oxide, and nitrous oxide are more instances of neutral oxides. Carbon dioxide, sulfur dioxide, phosphorus pentoxide, sulfur trioxide, chlorine oxides, etc. are some examples of acidic oxides.

Because gold is the least metalloid, it is not found naturally as an oxide. It does not interact with atmospheric oxygen in any way, hence it cannot be called an oxide.

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The heat required is 2347 J

The heat required for a change of state depends on the substance, the amount of the substance, and the specific change of state involved.

When a substance undergoes a change of state, such as melting or boiling, heat is added or removed to cause the particles in the substance to gain or lose energy and rearrange themselves into a new physical state. The amount of heat required to effect this change is known as the heat of transformation, or the heat of fusion

We know that;

H1 = 25.0 *  0.235 * (962 - 950)

= 70.5 J

H2 = 25 g * 88 J/g

= 2200 J

H3 = 25 * 0.278  * (972 - 962)

=76. 5 J

Then we have that;

70.5 J + 2200 J + 76. 5 J

=2347 J

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Answer: The pressure in the container is 1949.5 torr when the volume is 7.20 liters and the temperature is 71.0 °C

Explanation: To solve this problem, we can use the combined gas law, which relates the initial and final conditions of pressure (P), volume (V), and temperature (T) for an ideal gas:

(P1 × V1) / T1 = (P2 × V2) / T2

where P1, V1, and T1 are the initial pressure, volume, and temperature, and P2, V2, and T2 are the final pressure, volume, and temperature.

We can plug in the given values:

P1 = 740.5 torr

V1 = 10.8 L

T1 = 23.0 °C + 273.15 = 296.15 K

V2 = 7.20 L

T2 = 71.0 °C + 273.15 = 344.15 K

(P1 × V1) / T1 = (P2 × V2) / T2

(740.5 torr × 10.8 L) / 296.15 K = (P2 × 7.20 L) / 344.15 K

Solving for P2:

P2 = (740.5 torr × 10.8 L × 344.15 K) / (296.15 K × 7.20 L)

P2 = 1949.5 torr

Therefore, the pressure in the container is 1949.5 torr when the volume is 7.20 liters and the temperature is 71.0 °C.

Answer: I will answer if u Mark me

Explanation:

Answer:

mg

Explanation:

Answer:

a

Explanation:

Hydronium ion concentration, [H3O+], in a solution of pH = 1.76 is

[H3O+] = 0.01737800828M = 0.02M

pH is calculated using the expression :

\(Therefore : H_3O^+=10^(-pH)\)

\(Thus, H_3O^+=10^(-1.76) = 0.02M\)

Therefore, there are 0.02 moles of hydronium (H3O+ ) ions present in each liter of the solution.

Or, the concentration of the solution is about 0.02 M.

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26.8L is the volume, in liters, of 1.20 mol of C\(_3\)H\(_8\) gas at STP. A measurement of three-dimensional space is volume.

A measurement of three-dimensional space is volume. It is frequently expressed quantitatively using SI-derived units, like the cubic metre or litre, or different imperial or US-standard units, including the gallon, quart and cubic inch. Volume and length (cubed) have a symbiotic relationship.

The volume of an envelope is typically thought of as its capacity, not as the amount of space it takes up. In other words, the volume is the quantity of fluid (liquid or gas) that the container may hold.

Volume = 1.20×22.4

              =26.8L

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Answer:

a

Explanation:

350 minutes make up 5.250 hours. We can determine the number of minutes in the specified number of hours because 1 hour equals 60 minutes.

Dimensional analysis is the process of determining the dimensions of physical quantities in order to examine relationships between them. All quantities in the universe can be stated as a function of the basic dimensions, which are independent of numerical multiples and constants.

Dimensional analysis is a method used in engineering and the physical sciences to reduce physical quantities like acceleration, viscosity, and energy to their basic dimensions of length (L), mass (M), and time (T).

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The value of x​ : 2

Semi-normal Hydrochloric acid solution = 0.5 N = 0.5 M

for titration :

M₁V₁n₁=M₂V₂n₂(1=HCl,2=Na₂CO₃)

\(\tt 0.5\times 20\times 1=M_2\times V_2\times 2\\\\M_2V_2=5~mlmol=5.10^{-3}mol\)

\(\tt MW=\dfrac{mass}{mol}=\dfrac{0.715}{5.10^{-3}}=143~g/mol\)

MW Na₂CO₃.xH₂O=143

MW Na₂CO₃.xH₂O = MW Na₂CO₃+ MW xH₂O = 143

MW Na₂CO₃ = 106 g/mol

MW xH₂O = 18x

Equation :

\(\tt 106+18x=143\\\\18x=37\\\\x=\dfrac{37}{18}=2.056\approx 2\)

Answer:

5 km/h

Explanation:

divide the hours to the distance

The heat of fusion of water is 79.9 cal/g. If a 7.2 g piece of ice melts in 105 g of water at 34.3 deg C in an insulated bottle, 35071.6 °C is the  final temperature of the water.

The physical concept of temperature indicates in numerical form how hot or cold something is. A thermometer is used to determine temperature. Thermometers are calibrated using a variety of temperature scales, which historically defined distinct reference points or thermometric substances.

The most popular scales were the Celsius scale, sometimes known as centigrade, with the unit symbol °C, the scale of Fahrenheit (°F), or the Kelvin scale (K), with the latter being mostly used for scientific purposes.

Δ T = T(initial) - T(final)

T(final)= m × c × q - T(initial)

T(final)= 79.9 x 4.184 x 105 - 30.0

T(final)= 35071.6 °C

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Answer:Option (b) is the correct answer.

Explanation:

When a neutral element loses an electron then it acquires a positive charge and it is known as a cation.

For example, when a neutral iron atom loses three electrons then it forms a  ion.

On the other hand, when a neutral element gains an electron then it acquires a negative charge and it is known as a anion.

For example, a sulfate ion means  ion.

Thus, we can conclude that out of the given options sulfate is not a cation.

Explanation:

Answer:

140.3 *C

Explanation:

(P1 * V1) / T1 = (P2 * V2) / T2

where P1 = 3.000 atm, V1 = 200.0 ml, T1 = 37.0°C + 273.15 = 310.15 K, P2 = 2.000 atm, V2 = 400.0 ml.

Substituting these values into the formula gives:

(3.000 atm * 200.0 ml) / 310.15 K = (2.000 atm * 400.0 ml) / T2

Solving for T2 gives:

T2 = (2.000 atm * 400.0 ml * 310.15 K) / (3.000 atm * 200.0 ml)

T2 ≈ 413 K or 140°C.

The correct answer is B: Temperature and activation energy are the factors that affect the rate constant according to the Arrhenius equation.

According to the Arrhenius equation, which describes the relationship between the rate constant (k) of a chemical reaction and temperature, changing the factors of temperature and activation energy will affect the rate constant.

The Arrhenius equation is given by:

k = A * e^(-Ea/RT),

where k is the rate constant, A is the pre-exponential factor or the frequency factor, Ea is the activation energy, R is the ideal gas constant, T is the temperature in Kelvin, and e is the base of the natural logarithm.

From the equation, it is evident that the rate constant is directly influenced by temperature and activation energy. Increasing the temperature results in a higher rate constant, as the exponential term in the equation becomes larger. This is because higher temperatures provide more kinetic energy to the reacting molecules, leading to more frequent successful collisions and increased reaction rates.

Similarly, the activation energy affects the rate constant. A higher activation energy results in a lower rate constant, as the exponential term becomes smaller. Activation energy represents the energy barrier that reactant molecules must overcome to form products. A higher activation energy implies a slower reaction rate. option(B)

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Answer:

The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction.

For example, when wood burns, the mass of the soot, ashes, and gases equals the original mass of the charcoal and the oxygen when it first reacted. So the mass of the product equals the mass of the reactant.

Another example, solar panels don't create solar energy. They harness energy from the sun and transform it into another type of energy (electricity).

Clofibrate is a lipid-lowering pharmaceutical that has been utilized to treat hyperlipidemia. Its metabolism system includes different pathways such as hydrolysis, oxidation, conjugation, and others.

Metabolites are little molecules that are produced during the process of  metabolism in living living beings.

Clofibrate hydrolysis metabolite:

Clofibrate oxidation metabolites:

Clofibrate alkylation metabolites:

Clofibrate conjugation metabolites:

Conclusively, the relative abundance and significance of each metabolite can vary among individuals.

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The sample of salt found to contain 6.96 × 10¹¹ grams is equivalent to 6.96 × 10⁸ kilograms.

Kilograms is the International System of Units (S.I unit) or base unit of mass while grams is a unit of mass equal to one-thousandth of a kilogram.

Grams as a unit of mass can be converted to kilograms as follows:

1 kilograms = 1000 grams

According to this question, a sample is found to contain 6.96 × 10¹¹ grams of salt. This unit can be converted to kilograms as follows:

6.96 × 10¹¹ ÷ 1 × 10³

= 6.96 × 10⁸ kilograms

Therefore, the sample of salt found to contain 6.96 × 10¹¹ grams is equivalent to 6.96 × 10⁸ kilograms.

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Answer:

c

Explanation:

its c because it has multiple mixture blueberries flower water and others thats why i says c

Answer:

Instrumental methods

surface analysis

high performance liquid chromatography

atomic spectroscopy

potentiometry

Classical methods

precipitation titration

gravimetric analysis

Explanation:

Instrumental methods of analysis are those analytical methods in which the responsibility of detection has been removed from human beings and placed on automated instruments while classical methods are those analytical methods in which the responsibility of detection remains the responsibility of human beings.

Many instrumental methods such as HPLC rely on computer screens as readout devices.

1) There are 18 electrons and 20 protons

2) There are 21 neutrons hence the mass number is 41

An ion is created when an atom gains or loses one or more electrons. An atom is composed of a nucleus, which contains positively charged protons and neutral neutrons, and electrons, which orbit the nucleus.

If an atom gains one or more electrons, it becomes negatively charged and is known as an anion. If an atom loses one or more electrons, it becomes positively charged and is known as a cation.

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Answer:4

Explanation:

4

Answer:  The student's conclusion is inaccurate, smoke is a chemical change, but steam is a physical change.

Explanation:

When boiling water changes into steam, the matter composition of water is still the same (it remains H₂O). In this case, only the physical state of the water is changed from a liquid to a vapor (gas). When collected, the water vapor (gas) returns to its original liquid form proving that NO chemical reaction has taken place.

In contrast, a fire is a combustion chemical reaction that converts a fuel material (such as wood, fuel, or paper) and oxygen into carbon dioxide (CO₂) and water (H₂O). As an exothermic chemical reaction, the fire gives off heat in addition to the gaseous smoke. Unlike boiling, the fire permanently alters the fuel material as a result of the chemical reaction process.

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\(12 \times 2 + 2 \times 2 + 16 \times 2\)

\( = 24 + 2 + 32 \)

\( = 58 \: gram \: per \: mole\)

\(58 = 100\% \\ 24 = x\%\)

\(x = \frac{24 \times 100}{58} = 41.38\%\)

The strand 1 of hydrocarbons is used to produce plastic, hence option D is correct.

Raw resources like natural gas, oil, or plants that have been processed into ethane and propane are used to make plastics. The subsequent "cracking" procedure uses heat to transform ethane and propane into ethylene and propylene. To produce various polymers, these components are mixed.

Propylene is a substance found in large quantities in petroleum. In order to speed up chemical processes, refiners combine heated propylene with a catalyst to create plastic. Propylene molecules start to cluster together like beads on a thread as a result.

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Answer:

nah

Explanation:

l though Most Salt are soluble in water (Properties of Ionic Compound) , Not all are soluble ,which means mixing a salt and water can produce either a Solution (homogeneous mixture) or a Suspension (heterogeneous mixture).

Answer:

Solution

Explanation:

The solved dissolves on the solute, creating a homogeneous substance

The sample of nitrogen gas will occupy 236.54 mL of volume at 1.05 atm pressure.

Boyle's law is the ideal law that defines the relationship between pressure and volume of gases. A law is given if the temperature is kept constant. Pressure and volume exhibit an inverse relationship.

The Boyle's Law is given as:

P₁V₁ = P₂V₂

Given,

Initial pressure (P₁) = 0.974 atm

Initial volume (V₁) = 255 mL

Final pressure (P₂) = 1.05 atm

Final volume = V₂

The final volume at 1.05 atm is calculated by substituting values in Boyle's Law as:

P₁V₁ = P₂V₂

0.974 × 255 = 1.05 V₂

V₂ =  248.37 ÷ 1.05

= 236.54 mL

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At equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

1: Write the balanced chemical equation:

\(C_O\)(g) + \(Cl_2\)(g) ⟶ \(C_OCl_2\)(g)

2: Set up an ICE table to track the changes in moles of the substances involved in the reaction.

Initial:

\(C_O\)(g) = 0.3500 mol

\(Cl_2\)(g) = 0.05500 mol

\(C_OCl_2\)(g) = 0 mol

Change:

\(C_O\)(g) = -x

\(Cl_2\)(g) = -x

\(C_OCl_2\)(g) = +x

Equilibrium:

\(C_O\)(g) = 0.3500 - x mol

\(Cl_2\)(g) = 0.05500 - x mol

\(C_OCl_2\)(g) = x mol

3: Write the expression for the equilibrium constant (Kc) using the concentrations of the species involved:

Kc = [\(C_OCl_2\)(g)] / [\(C_O\)(g)] * [\(Cl_2\)(g)]

4: Substitute the given equilibrium constant (Kc) value into the expression:

1.2 x \(10^3\) = x / (0.3500 - x) * (0.05500 - x)

5: Solve the equation for x. Rearrange the equation to obtain a quadratic equation:

1.2 x \(10^3\) * (0.3500 - x) * (0.05500 - x) = x

6: Simplify and solve the quadratic equation. This can be done by multiplying out the terms, rearranging the equation to standard quadratic form, and then using the quadratic formula.

7: After solving the quadratic equation, you will find two possible values for x. However, since the number of moles cannot be negative, we discard the negative solution.

8: The positive value of x represents the number of moles of \(Cl_2\)(g) at equilibrium. Substitute the value of x into the expression for \(Cl_2\)(g):

\(Cl_2\)(g) = 0.05500 - x

9: Calculate the value of \(Cl_2\)(g) at equilibrium:

\(Cl_2\)(g) = 0.05500 - x

\(Cl_2\)(g) = 0.05500 - (positive value of x)

10: Calculate the final value of \(Cl_2\) (g) at equilibrium to get the answer.

Therefore, at equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

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Answer:

Single replacement reaction (aka single displacement reaction)

Explanation:

In a single replacement reaction, one element is substituted for another in a compound to create a new compound and a new element in the products. The general form is:

A + BC --> B + AC

In the case of this question, Cr and Fe "trade places."