A rigid 11.7 L sealed vessel containing 3.3 mol O2(g), 1.6 mol CH4(g) and 2.3 mol of He(g)
has an internal temperature of 78oC.
a. Calculate the partial pressure of each gas.b. What is the total pressure in the vessel?
c. Find the mole fraction of each gas in the vessel.d. A lab technician ignites the mist in the flask and the methane gas combusts in oxygen
to form carbon dioxide and water. Find the mole fraction of each gas in the mixture
after the reaction.

Answer:

hydrochloric acid

Explanation:

chemical compound any substance composed of identical molecules consisting of atoms

Answer:

The answer is

Plant also use cellular respiration

Answer:

B - Plants also use cellular respiration.

Explanation:

Did the test.

Answer:

a.In the garden

Explanation:

Because, inside from garden with big tub like a stock tank on your patio. They grow tubers planted in pots beneath the water and send up stems with rounded leaves and star-shaped blossoms that float on the surface.

I hope it helps to us. Always welcome my youngest sister:). keep learning and God bless.

Taking into account the definition of molarity and molar mass, 19.46 grams of LiF are required to make 0.065 L of a 11.54 M LiF solution.

Molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by :

molarity= number of moles÷ volume

Molarity is expressed in units moles/L.

Molar mass is the amount of mass that a substance contains in one mole.

In this case, you have:

Replacing in the definition of molarity:

11.54 M= number of moles÷ 0.065 L

Solving:

11.54 M × 0.065 L= number of moles

0.7501 moles= number of moles

The molar mass of LiF is 25.94 g/mole. So you can apply the following rule of three: If by definition of molar mass 1 mole of the compound contains 25.94 grams, 0.7501 moles of the compound contains how much mass?

mass= (0.7501 moles× 25.94 grams) ÷ 1 mole

mass= 19.46 grams

Finally, 19.46 grams of LiF are required.

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Answer:Percent error=5.6%

Explanation:

The [H₃O⁺] for the solution is less than 1 x 10⁻⁷ M, the solution is considered as basic.

A basic solution is one that has a pH greater than 7. It is also sometimes referred to as an alkaline solution. Basic solutions contain a lower concentration of hydrogen ions (H⁺) than hydroxide ions (OH⁻), meaning that they have a higher concentration of OH⁻.

We know that pH + pOH = 14 at 25°C.

Therefore, pH = 14 - pOH = 14 - 2.33

= 11.67.

Since pH = -log[H₃O⁺], we can rearrange to solve for [H₃O⁺]; [H₃O⁺] = \(10^{(-pH)}\)

= \(10^{(-11.67)}\) = 1.74 x 10⁻¹²) M.

Since the [H₃O⁺] concentration is less than 1 x 10⁻⁷ M, the solution is considered basic.

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Answer:

The similarity is that they both follow the laws of physics.

In both cases, the motion is opposed by the medium where the object presses through the medium and forces it to part and flow around the object. This creates friction.

If an object is smooth and pointed like a bomb, the friction is minimised. If it is rough with pockets or vertical flat surfaces, the friction is maximised. A parachute presents a round hollow cup face to the flow, maximising friction. This is due to a hole in the top of the parachute.

The difference is the power source. In the vertical direction it is generated by gravity, the force created by the planet. This force is opposed not only by friction but also the difference between the density of the object and the medium surrounding it. If there is a large difference then the acceleration will be large and a high percentage of g.

For example we have a density of 1000 kg/meters cubed and air has a density of 1 Kg per meters cubed, the difference is 999, so we fall at an acceleration of 999/1000 x g. minus the effects of friction.

In the horizontal direction, gravity still opposes the movement creating friction in the vertical direction such as dragging a heavy object on the floor behind you. Force needs to be created horizontally to oppose the friction and to create an acceleration. A balance is soon reached where the acceleration stops and the object is dragged at a constant velocity.

22202 are the number of atoms to be placed side by side to span a distance of 6.0um.

The smallest unit of substance into which it is possible to divide without releasing electrically charged particles is the atom.

In addition, it is the smallest unit of matter with chemical element-like characteristics. The atom is thus the fundamental component of chemistry.

An atom of Rhodium (Rh) diameter d = 2.7x\(10^{-10}\) m.

Now assuming that keeping n atoms side by side , the distance will be L= 6um = 6.5 x \(10^{-6}\) m.

Now, the total length is given by total sum of diameter,

so the equation is given by,

L= nd

n= \(\frac{L}{d}\)

n= \(\frac{6.0x 10^{-6} m}{2.7x10^{10} } m\)

n= 22202 atoms.

Hence, there are total 22202 Rh atoms have to be placed side by side to span a distance.

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Answer:

the chemical name for soap is a lot, for example there is Sodium Talowate, Sodium Palmate, and even Sodium Cocoate, but there is more

Explanation:

the chemical formula for it is RCOO-Na+ it has 12 - 18 carbon atoms.

Answer:

C: An organic acid produced by rotting vegetation makes holes in rocks Process

Explanation:

In chemical weathering , weathering process occurs due to chemical reaction . When organic acid produced by rotting vegetation makes holes in rocks , chemical reaction takes place between acid and rock which results in the formation of new product . Hence it is an example of chemical weathering .

In all the rest of options , weathering is due to physical process .

The displacement of the hamster ball is equal to -5 feet. Therefore, option (B) is correct.

The displacement of an object can be demonstrated as the change in the position of an object. The displacement can be defined as the minimum length between the initial and the final point of an object.

The displacement can be defined as a vector quantity posses both direction of displacement and magnitude. Therefore, the measurement of the displacement of an object includes direction.

The S.I. unit of the displacement meters and the C.G.S. unit are centimeters the same as the distance.

A hamster in a ball starts its journey 5 feet to the left of a refrigerator, travels 20 feet to the right of the refrigerator, and ends its journey in front of the refrigerator.

Therefore, the displacement of the hamster ball is equal to -5 feet.

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Answer:

The first thing you will need to do is find some information about your element. Go to the Periodic Table of Elements and click on your element. If it makes things easier, you can select your element from an alphabetical listing.

Number of Protons = Atomic Number

Number of Electrons = Number of Protons = Atomic Number

Number of Neutrons = Mass Number - Atomic Number

For krypton:

Number of Protons = Atomic Number = 36

Number of Electrons = Number of Protons = Atomic Number = 36

Number of Neutrons = Mass Number - Atomic Number = 84 - 36 = 48

Explanation:

hope this helps, have a good day :-)

These are the formal charges for compounds 1 and 2:

The formal charge of an atom is the charge that an atom would have if all of the electrons in a bond were shared equally. To calculate the formal charge of an atom, use the following formula:

formal charge = valence electrons - (bond electrons / 2) - non-bonding electrons

In compound 1, the nitrogen atom has 5 valence electrons, 3 bond electrons (one from each of the two C-N bonds), and 0 non-bonding electrons. Therefore, the formal charge on the nitrogen atom is 0.

The oxygen atom in compound 1 has 6 valence electrons, 2 bond electrons (one from each of the two C-O bonds), and 4 non-bonding electrons. Therefore, the formal charge on the oxygen atom is -1.

The chlorine atom in compound 1 has 7 valence electrons, 1 bond electron (from the C-Cl bond), and 6 non-bonding electrons. Therefore, the formal charge on the chlorine atom is -1.

In compound 2, the nitrogen atom has 5 valence electrons, 1 bond electron (from the N-O bond), and 4 non-bonding electrons. Therefore, the formal charge on the nitrogen atom is +1.

The oxygen atom in compound 2 has 6 valence electrons, 2 bond electrons (one from the N-O bond and one from the C=O bond), and 0 non-bonding electrons. Therefore, the formal charge on the oxygen atom is -1.

The carbon atoms in both compounds have 4 valence electrons, 4 bond electrons, and 0 non-bonding electrons. Therefore, the formal charge on the carbon atoms is 0.

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The data that would demonstrate the action of photosynthesis is:

"When the container included a plant exposed to light, carbon dioxide concentration went from 800 to 600 ppm."

This data shows a decrease in carbon dioxide concentration from 800 to 600 ppm when a plant is exposed to light. During photosynthesis, plants absorb carbon dioxide from the surrounding environment and convert it into glucose and oxygen. The decrease in carbon dioxide concentration indicates that the plant is actively utilizing carbon dioxide for photosynthesis. As a result, the carbon dioxide level in the container decreases, demonstrating the action of photosynthesis. The other provided data points do not specifically indicate the action of photosynthesis. The first data point suggests that multiple plants in the container can prevent the carbon dioxide concentration from exceeding 1,000 ppm, but it does not indicate any decrease in concentration. The second data point mentions plants in darkness, which would not promote photosynthesis.

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The final concentration of the reactant of a first order reaction can be determined from the rate constant equation. The concentration of ammonium carbonate after 39 s will be 0.003 M.

Rate constant of a reaction is the rate of reaction when one molar concentration of the reactant is involved in the reaction. The expression for the rate constant k for first order reaction is :

k = 1/t ln (C0/Ct)

Where C0 be the initial concentration and Ct be the concentration after t seconds.

Given that C0 of ammonium nitrate = 0.957 M

rate constant = 0.196 /s

t = 39 s.

The concentration after 39 seconds is calculated as follows:

0.196 /s = 1/39s ln (0.957 M / Ct)

Ct = 0.957 / (ln⁻¹ (0.196 × 39))

    = 0.003 M.

Therefore, the concentration of ammonium carbonate after 39 seconds will be 0.003 M.

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The flow rate of fuel from the pump is 0.25 liters/second.

To find the flow rate of fuel from the pump, we need to determine the volume of fuel that is dispensed per unit of time.

75 liters = 0.075 cubic meters

Mass = volume x density

Mass = 0.075 cubic meters x 680 kg/cubic meter

Mass = 51 kg

we can convert the time it takes to fill the tank from minutes to seconds:

5 minutes = 300 seconds

Finally, we can calculate the flow rate of fuel from the pump:

Flow rate = mass/time

Flow rate = 51 kg / 300 seconds

Flow rate = 0.17 kg/second

Since we know the relative density of the fuel is 0.68, we can convert the flow rate from kilograms to liters:

Flow rate = mass/density

Flow rate = 0.17 kg / 0.68 kg/liter

Flow rate = 0.25 liters/second

The flow rate of fuel from the pump is 0.25 liters/second.

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Answer:

Fe + CuCl2 = FeCl2 + Cu

Explanation:

This is already balanced.

The species that is oxidized and the species that is reduced in the reaction are: \(Cl_{2}\) is oxidized and \(I^{-}\)is reduced.

What are the species?

The species in a chemical reaction are the reactants and products involved in the reaction. The reactants are the substances that undergo a chemical change, while the products are the substances that are formed as a result of the chemical change.

What are the substances?

Substances refer to the chemical elements or compounds that make up the reactants and products in a chemical reaction.foe example, Hydrogen gas and oxygen gas are the reactants, while water is the product.

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Complete question is: The species that is oxidized and the species that is reduced in the reaction are: \(Cl_{2}\) is oxidized and \(I^{-}\)is reduced.

Reactions can occur because of a precipitation reaction

Double-Replacement reactions, happens if there is an ion exchange between two ion compounds in the reactant to form two new ion compounds in the product  

To predict whether this reaction can occur or not is one of them, the precipitation reaction. A precipitation reaction occurs if two ionic compounds which are dissolved reacted to produce one of the products of the ion compound does not dissolve. Formation of these precipitating compounds that cause reactions can occur  

Chloride solution reacts with Sodium carbonate solution

CaCl₂(aq)+Na₂CO₃(aq)⇒CaCO₃(s)+NaCl(aq)

Because Calcium carbonate, CaCO₃ an insoluble solid , it will precipitates so that a reaction can occur

The empirical formula of the compound is C₂H₁₆S₂N₃O.

The moles of each element is as follows::

For CO₂:

Carbon (C) has a molar mass of 12.01 g/mol.

Oxygen (O) has a molar mass of 16.00 g/mol.

Moles of C in CO₂ = 2.08 g / 12.01 g/mol = 0.173 moles

Moles of O in CO₂ = 2.08 g / 16.00 g/mol = 0.130 moles

For H₂O:

Hydrogen (H) has a molar mass of 1.01 g/mol.

Oxygen (O) has a molar mass of 16.00 g/mol.

Moles of H in H₂O = 1.28 g / 1.01 g/mol = 1.27 moles

Moles of O in H₂O = 1.28 g / 16.00 g/mol = 0.080 moles

For SO₃:

Sulfur (S) has a molar mass of 32.06 g/mol.

Oxygen (O) has a molar mass of 16.00 g/mol.

Moles of S in SO₃ = 4.77 g / 32.06 g/mol = 0.149 moles

Moles of O in SO₃ = 4.77 g / 16.00 g/mol = 0.298 moles

For HNO₃:

Hydrogen (H) has a molar mass of 1.01 g/mol.

Nitrogen (N) has a molar mass of 14.01 g/mol.

Oxygen (O) has a molar mass of 16.00 g/mol.

Moles of H in HNO₃ = 3.48 g / 1.01 g/mol = 3.45 moles

Moles of N in HNO₃ = 3.48 g / 14.01 g/mol = 0.248 moles

Moles of O in HNO₃ = 3.48 g / 16.00 g/mol = 0.217 moles

The simplest whole-number ratio of the elements will be:

Carbon: 0.173 moles / 0.080 moles ≈ 2.16

Hydrogen: 1.27 moles / 0.080 moles ≈ 15.88

Sulfur: 0.149 moles / 0.080 moles ≈ 1.86

Nitrogen: 0.248 moles / 0.080 moles ≈ 3.10

Oxygen: 0.080 moles / 0.080 moles = 1

Therefore, the empirical formula is C₂H₁₆S₂N₃O.

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When a chemical reaction releases energy it is called Exothermic Reaction.

hope it helps!

When a chemical reaction energy releases then this type of reaction is called exothermic reaction. In this reaction energy is release to the atmosphere.

In chemistry there are various type of reaction out of which the two main types are the exothermic reaction and endothermic reaction.

Exothermic reaction is the one in which energy releases in form of heat respiration reaction is an example of exothermic reaction. In respiration food that we eat are broken down in glucose with release of energy.

Endothermic reaction is the one in which energy is taken out during the reaction. Photosynthesis is an example of endothermic reaction where sunlight energy is taken by the plants to make food.

Thus when a chemical reaction releases energy these reactions are called exothermic reaction.

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Taking into account the definition of molarity, the number of moles of MgCl₂ present in 60.0 mL of 0.100 M MgCl₂ solution is 0.006 moles.

Molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by:

molarity= number of moles of solute÷ volume

Molarity is expressed in units moles/L.

In this case, you have:

Replacing in the definition of molarity:

0.100 M=number of moles of MgCl₂÷ 0.06 L

Solving:

0.100 M × 0.06 L= number of moles of MgCl₂

0.006 moles= number of moles of MgCl₂

Finally, the number of moles of MgCl₂ is 0.006 moles.

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Answer:

Lithium Bromide: LiBr and Potassium chloride: KCl.

Explanation:

A substance that will conduct electricity when dissolved completely in water is known as an Electrolyte.

Now, electrolytes are usually salts that ionize completely in a solution unlike non - electrolytes that do not dissociate into ions in solution.

Looking at the options, the only ones that are Salts are Lithium Bromide: LiBr and Potassium chloride: KCl.

Thus, options

Lithium Bromide: LiBr and Potassium Chloride: KCI will conduct electricity

when dissolved in water.

Electrolytes are referred to as compounds which conduct electricity when

dissolved in water. A salt is a common example of a compound which

dissolves in water to  generate electricity which makes it an electrolyte.

In the options the salts present are Lithium Bromide and Potassium

Chloride which is why options B and D are the most appropriate choice.

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Answer:

To convert joules to calories, you can use the conversion factor:

1 calorie = 4.184 joules

To find out how many calories are in 4,180 joules, divide the given value by the conversion factor:

4,180 joules / 4.184 joules per calorie = 0.9 calories (approximately)

Therefore, there are approximately 0.9 calories in 4,180 joules.

Answer:

1.6

Explanation:

it crashes out so it can go. more faster

Answer:

0.0878 moles CaCl₂

Explanation:

To find the amount of moles of CaCl₂, you need to

(1) convert the volume from mL to L (1,000 mL = 1 L)

(2) calculate the amount of moles (M = moles / L)

It is important to arrange the conversions in a way that allows for the cancellation of units.

(Step 1)
   

  42 mL CaCl₂                    1 L
------------------------  x  ----------------------  =  0.042 L CaCl₂
                                       1,000 mL

(Step 2)

Molarity (M) = moles / volume (L)                <----- Molarity ratio

2.09 M = moles / 0.042 L                            <----- Insert values

0.0878 = moles                                           <----- Multiply both sides by 0.042 L

The new mid-ocean ridge shows that the crust near the ridge is newer than the crust farther from the ridge. Therefore, option (d) is correct.

A mid-ocean ridge can be described as a seafloor mountain system formed by plate tectonics. It has a depth of about 2,600m and rises about 2,000 m above the deepest part of an ocean basin. Seafloor spreading occurs along a divergent plate boundary.

The rate of seafloor spreading calculates the morphology of the crest and its width in an ocean basin. The production of new seafloor results from the mantle in response to plate separation.

Mid-ocean ridges can be linked by plate tectonic boundaries and the trace of the ridges across the ocean floor appears to be the seam of a baseball. The mid-ocean ridge system can be defined as the longest mountain range on Earth, reaching about 65,000 km.

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