Given the balanced equation representing a reaction: 4nh3 + 5o2 4no + 6h2o what is the minimum number of moles of o2 that are needed to completely react with 16 moles of nh3?

Answer:

Carbon Cycle.

Explanation:

Co2... is released by humans and animals through respiration but plants use it for photosynthesis so we consume plants so it comes back to us.And when the animals die it gets decomposed and it is then used again by plants in minerals and through combustion plants use it while doing photosynthesis and it happens again and again thus, the carbon cycle goes under never ending cycle.

Answer:

b. This is a redox reaction in which octane (C8H18) is the reducing agent.

Explanation:

edge 2021 i just did it

The statement which best describes the reaction is:

This is not a redox reaction. It is an example of combustion.

This is a reaction which is accompanied by a change in the oxidation number of the reacting elements

This is a reaction in which a substance burns in air (oxygen) to produce carbon dioxide, CO₂ and water, H₂O

Considering the equation given

2C₈H₁₈ + 25O₂ —> 16CO₂ +18H₂O

we can see that C₈H₁₈ burns in air (oxygen) to produce carbon dioxide, CO₂ and water, H₂O

Thus, we can conclude that the reaction is not redox but an example of combustion reaction

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Answer:

Initial volume of the container (V1) = 1.27 L (Approx)

Explanation:

Given:

Number of mol (n1) = 5.67 x 10⁻²

Number of mol (n2) = (5.67 +2.95) x 10⁻² = 8.62 x 10⁻²

New volume (V2) = 1.93 L

Find:

Initial volume of the container (V1)

Computation:

Using Avogadro's law

V1 / n1 = V2 / n2

V1 / 5.67 x 10⁻² = 1.93 / 8.62 x 10⁻²

V1 = 10.9431 / 8.62

Initial volume of the container (V1) = 1.2695

Initial volume of the container (V1) = 1.27 L (Approx)

Answer: 1.27 L

Explanation:

First, calculate the final number of moles of propane (n2) in the container.

n2 = n1 + nadded = 5.67 × 10^−2 mol + 2.95 × 10^−2 mol = 8.62 × 10^−2 mol

Rearrange Avogadro's law to solve for V1.

V1 = V2 × n1 / n2

Substitute the known values of n1, n2, and V2,

V1 = 1.93 L × 5.67 × 10^−2 mol / 8.62 × 10^−2 mol = 1.27 L

Answer:

Mass =  117 g

Explanation:

Given data:

Moles of water = 6.50 mol

Mass in gram = ?

Solution:

Formula:

Number of moles = mass/molar mass

Molar mass of water = 18 g/mol

Now we will put the values in formula.

6.50 mol = mass/ 18 g/mol

Mass = 6.50 mol×18 g/mol

Mass =  117 g

creativity is the very element in science that helps us understand things. if we didn't have creative minds, we would never conduct experiments that help us discover things.

hope this helps, good luck!:)

This increased energy causes the molecules to move more rapidly, which in turn increases the volume of the substance. As the volume of the substance increases, its density decreases because the same amount of matter is spread out over a larger volume.

The density decreases as the temperature increases because the molecules lose energy and slow down, so the same number of molecules occupy less space. This happens because the increase in temperature causes the molecules to move more rapidly, increasing the space between them. The density of a substance is defined as its mass per unit volume. The density of a substance depends on its temperature, as well as its pressure and composition. As the temperature of a substance increases, the kinetic energy of its molecules also increases. This increased energy causes the molecules to move more rapidly, which in turn increases the volume of the substance. As the volume of the substance increases, its density decreases because the same amount of matter is spread out over a larger volume.

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Answer:

B. thermal energy moves from a warmer object to a cooler object until all the substances are the same temperature

Energy from various sources is stored, transmitted, and utilised in a number of ways. Electrical energy, for example, is often stored in batteries and delivered via power lines.

It is then utilised to power various gadgets ranging from lightbulbs to laptops. Solar energy is similarly stored in solar panels and transmitted via electrical connections. This energy is then converted into electricity and utilised to power homes, companies, and other purposes.

Furthermore, natural gas, oil, and other fossil fuels are transported through a pipeline network and used to generate electricity and heat buildings. Nuclear energy is also stored, transferred, and used to create power via a network of pipelines. Finally, wind energy is stored in enormous batteries and distributed via electrical wires.

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Answer:

Reactive.

Explanation:

am sure bro..…….

Because it is too reactive, sodium metal cannot be used to make sodium chloride. Since sodium is a highly reactive alkali metal, it easily interacts with other substances to form new ones.

Sodium metal interacts fast with water to produce sodium hydroxide and hydrogen gas. The metal may catch fire and burn as a result of this reaction since it is so exothermic, or heat-producing.

Sodium metal interacts fast with acids like hydrochloric acid to produce sodium chloride and hydrogen gas. However, handling this reaction can be risky due to its high exothermic nature.

There is a significant safety risk since the heat from the reaction might cause the acid to boil and spray.Boil and spatter poses a major risk to people's safety. In comparison, using sodium hydroxide to create sodium chloride is significantly safer.

When sodium hydroxide and an acid are combined, the reaction is significantly slower and less exothermic. This response is considerably simpler to manage and does not provide a significant risk to safety. Sodium hydroxide is also considerably simpler to get than sodium metal. As a result, it is the technique of choice for producing sodium chloride.

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The number of moles of NaCl contained in 5 L of a 2.2 M solution is 11 moles

The molarity of a solution gives a relationship between volume and mole of substance. The mathematical relationship is given below:

Molarity = number of mole / Volume

With the above formula, we can determine the number of mole of NaCl in the solution. Details below:

Molarity = number of mole / Volume

Cross multiply

Number of mole = molarity × volume

Number of mole of NaCl = 2.2 × 5

Number of mole of NaCl = 11 moles

Thus, the number of moles of NaCl is 11 moles

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To determine how much of solution A would be needed to generate the electrical energy used daily in the home

we need to calculate the ratio of the energy released by fusion of hydrogen to the electrical energy used daily.

Energy ratio = Energy released by fusion of hydrogen / Electrical energy used daily

Energy ratio = (8.4 x 10^12) / (3 x 10^8)

To simplify the calculation, we can convert the values to scientific notation with the same exponent:

Energy ratio = (8.4 / 3) x (10^12 / 10^8)

Energy ratio = 2.8 x 10^4

This means that for every unit of electrical energy used daily in the home, we would need 2.8 x 10^4 units of solution A to generate that energy.

Therefore, to generate the electrical energy used daily in the home, we would need 2.8 x 10^4 liters of solution A.

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Only glassware marked "pyrex" is typically intended for heating. In conclusion, test tubes and graded cylinders may break when near heat sources.

Furnaces are often the most effective heating options, particularly if you have access to natural gas. They function by employing a heat exchanger to warm the air and a fan to push it through duct system and into the house.

Common fuels include wood, coke, kerosene, gasoline, diesel, oil, and charcoal. Heat energy may be produced from electric energy. The conversion of electrical energy into thermal energy occurs in a number of appliances, including an ironing, heaters, and induction stove.

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Answer:

mining of clay limestone and then heated to a certain temperature of 1450⁰ in a cement kiln

Answer:

The answer would be (b)

Explanation:

Answer:

1. Crush the sugar into powder.

2. Heat the water.

3. Dissolve it by stirring continuously

Explanation:

1. Crushing the sugar into powder increases surface area. So it increases the changes of dissolving

2. Heating the water increases the capacity of water to dissolve sugar.

3. Stirring continuously increases randomness of particles so eases mixing up thus increasing dissolving tendency.

The number of moles of Mg, Cl, and O atoms in 2.50 moles of Mg(ClO4)2 is 2.50, 5.00, and 20.00, respectively.

To calculate the number of moles of magnesium (Mg), chlorine (Cl), and oxygen (O) atoms in 2.50 moles of magnesium perchlorate (Mg(ClO4)2), we need to consider the subscripts in the chemical formula. In Mg(ClO4)2, there are 2 moles of chlorine atoms (2Cl), 8 moles of oxygen atoms (8O), and 1 mole of magnesium atoms (1Mg).
So, in 2.50 moles of Mg(ClO4)2, there will be:
- 2.50 moles * 2 moles of chlorine = 5.00 moles of Cl
- 2.50 moles * 8 moles of oxygen = 20.00 moles of O
- 2.50 moles * 1 mole of magnesium = 2.50 moles of Mg
The number of moles of Mg, Cl, and O atoms in 2.50 moles of Mg(ClO4)2 is 2.50, 5.00, and 20.00, respectively.

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Answer:

Clouds are classified according to their height above and appearance (texture) from the ground.

Explanation:

The following cloud roots and translations summarize the components of this classification system: 1) Cirro-: curl of hair, high; 2) Alto-: mid; 3) Strato-: layer; 4) Nimbo-: rain, precipitation; and 5) Cumulo-: heap. Hope this helps :)

The addition of a saturating concentration of L-NMMA to a relaxing aortic ring with intact endothelium would probably affect the synthesis of NO. L-NMMA is a competitive inhibitor of nitric oxide synthase (NOS), which is the enzyme responsible for the synthesis of NO. By inhibiting NOS, L-NMMA would prevent the production of NO, leading to a decrease in its concentration in the aortic ring.

Nitric oxide (NO) is continuously synthesized in the body, and it plays a crucial role in regulating blood Nitric oxide (NO) is continuously synthesized in the body, and it plays a crucial role in regulating blood vessel tone and promoting vasodilation. In the presence of intact endothelium, the endothelial cells release NO, which diffuses to the underlying smooth muscle cells of the blood vessels and causes relaxation.

L-NMMA (N-monomethyl-L-arginine) is a competitive inhibitor of the enzyme nitric oxide synthase (NOS), which is responsible for the synthesis of NO. When a saturating concentration of L-NMMA is added to a relaxing aortic ring with intact endothelium, it would likely inhibit the activity of NOS. As a result, the production of NO would be decreased, leading to vasoconstriction and a decrease in the relaxation of the aortic ring.

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The concentration of H+ at equilibrium is 1.06 x 10^-4 M.

To determine the concentration of H+ in the weak acid solution at equilibrium, we need to use the percent ionization and the initial concentration of the weak acid.

Let's assume that the weak acid is denoted by HA. Then, we can write the equilibrium equation for the dissociation of HA as:

HA ⇌ H+ + A-

The equilibrium constant expression for this dissociation reaction is:

Ka = [H+][A-]/[HA]

Since the acid is weak, we can assume that the concentration of A- at equilibrium is approximately equal to the initial concentration of HA, since only a small fraction of HA is dissociated. Therefore, we can simplify the equilibrium constant expression to:

Ka = [H+]^2/[HA]

Rearranging this equation, we get:

[H+]^2 = Ka[HA]

Taking the square root of both sides, we get:

[H+] = sqrt(Ka[HA])

Now, we can plug in the values given in the problem:

Ka = unknown

[HA] = 0.00550 M

percent ionization = 8.20%

To find Ka, we can use the percent ionization:

percent ionization = [H+]/[HA] x 100%

8.20% = [H+]/0.00550 M x 100%

[H+] = 0.000451 M

Now, we can use the equation we derived earlier to find [H+] at equilibrium:

[H+] = sqrt(Ka[HA])

0.000451 M = sqrt(Ka x 0.00550 M)

Squaring both sides, we get:

Ka x 0.00550 M = (0.000451 M)^2

Solving for Ka, we get:

Ka = (0.000451 M)^2 / 0.00550 M

Ka = 3.70 x 10^-6 M

Finally, we can use the equation [H+] = sqrt(Ka[HA]) to find the concentration of H+ at equilibrium:

[H+] = sqrt(3.70 x 10^-6 M x 0.00550 M)

[H+] = 1.06 x 10^-4 M

Therefore, the concentration of H+ at equilibrium is 1.06 x 10^-4 M.

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Answer:

Explanation:

4 min 15sec=255 seconds but idk what you actually want me to say what it is equal to as you haven't given anything to compare it to

The pH of 0.001 M LiOH is 11.

What is pH?

pH is negative logarithm of concentration of H⁺ ions. pH is a scale that has a range of 0 to 14. 0 to 6 range represents acidic solution whereas 8 to 14 range represents basic solution. 7 value of pH represents neutral solution.

pH is very useful for our daily life. There must be a balanced pH for the water we drink or in our blood or in our surrounding air or soil etc.

It can be represented as-

pH = -log[H⁺]

pH = 14 - pOH

Given,

Concentration of LiOH = [OH] = 0.001 M

pOH = -log[0.001] = 3

Hence, pH = 14 - 3 = 11

Therefore, the pH of 0.001 M LiOH is 11.

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The concentration of Ca(OH)2 in the solution is approximately 1.33 x 10^(-6) M.

To find the concentration of Ca(OH)2 in a solution with a pH of 8.57, we need to use the concept of pOH, which is the negative logarithm of the hydroxide ion concentration ([OH-]). The pOH can be calculated by subtracting the pH from 14, which gives us 14 - 8.57 = 5.43.

Since Ca(OH)2 produces two OH- ions for every molecule of Ca(OH)2 that dissolves, the concentration of OH- ions will be twice the concentration of Ca(OH)2. Thus, we have [OH-] = 2x, where x represents the concentration of Ca(OH)2.

Taking the antilogarithm of the pOH, we find that [OH-] = 10^(-pOH) = 10^(-5.43).

Since [OH-] = 2x, we can write 2x = 10^(-5.43) and solve for x.

x = (10^(-5.43))/2 ≈ 1.33 x 10^(-6) M

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Answer:

Net force: 110 N

Resulting Force: 24.7289837 pounds-force

Explanation:

First you would add 30+60+20N which would be 110N

110N would equal to the 24.72898937 pounds of force.

Answer:

When the nucleus is in radiation, the nuclei will become unstable and will decay overtime.

Answer:

The ratio of aluminium and oxygen ions that only exists is 2:3

Since Aluminium has 3 valence electrons and oxygen has 2 vacant orbitals

Aluminium holds a valence of 3 and oxygen 2, when they react a compound of formula

\(Al _{2} O _{3}\)

is formed

According to the electronic configuration and valency, ratio that could exist between aluminium and oxygen is 2:3.

Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.

Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.

Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.

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The magnitude of the angular acceleration of the disk is -203.9 rad/s^2 (negative sign is indicating the direction of angular acceleration is opposite to the direction of applied forces).

The magnitude of the angular acceleration of the disk can be determined by using the equation for torque:

τ = Iα

where τ is the torque, I is the moment of inertia, and α is the angular acceleration.

The moment of inertia of a solid disk is given by the equation:

I = (1/2) * m * r^2

where m is the mass and r is the radius of the disk.

So we can substitute the values of mass and radius in the equation of the moment of inertia:

I = (1/2) * 24.3 kg * (0.314 m)^2 = 0.03898 kg*m^2

Now we can calculate the torque caused by the forces of 90 n and 125 n. These forces are applied in opposite direction so the net torque caused by them is:

τ = 90 N * 0.314 m - 125 N * 0.314 m = -7.922 Nm

So we can now calculate the angular acceleration using the torque equation:

-7.922 Nm = 0.03898 kgm^2 * α

α = -7.922 Nm / 0.03898 kgm^2 = -203.9 rad/s^2

Therefore, The magnitude of the angular acceleration of the disk is -203.9 rad/s^2 (negative sign is indicating the direction of angular acceleration is opposite to the direction of applied forces).

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Answer:

To find the mass of a 19.6 ml solution of 18.0 wt% cacl2, we can use the density of the solution and the volume.

First, we need to convert the percentage concentration to a mass fraction. We can do this by multiplying the percentage by the mass of one mole of cacl2 (110.98 g/mol) and then dividing by 100.

mass fraction = (18.0 wt%) * (110.98 g/mol) / 100 = 19.79 g/100g

Next, we can use the density of the solution to find the mass of 19.6 ml of the solution:

mass = density * volume = 1.165 g/ml * 19.6 ml = 22.904 g

Now, we can convert the mass to milligrams by multiplying by 1000

mass (milligrams) = 22.904 g * 1000 = 22904 mg

So, the mass of a 19.6 ml solution of 18.0 wt% cacl2 is 22904 mg

Answer: Um what is it?

Explanation:

Answer:

I think air is more denser than oxygen