Which of the following changes would result in an increase of nitrogen dioxide, NO2?
N204() <---> 2NO2(g)
AH° = 58 kJ

Answer:

Metals

Explanation:

Answer:

Explanation: pls read what i wrote i don't know if it's correct but i just tried to solve it

Answer:

From the mole ratio of the gases, 10 moles of hydrogen will produce 10 moles of water, and if 10.0 L of hydrogen and 6.0 L of oxygen were used, 10.0 L of water will be produced.

What is the mole ratio of reactants in the formation of water?

The mole ratio of the reactants in the formation of water can be shown from the equation below:

Mole ratio of hydrogen to oxygen is 2:1

10 moles of hydrogen will require 5 moles of oxygen, therefore hydrogen is the limiting reactant.

10 moles of hydrogen will produce 10 moles of water.

1 mole of a gas has a volume of 22.4 L.

If 10.0 L of hydrogen and 6.0 L of oxygen were used, 10.0 L of water will be produced.

Therefore, the volume ratio of gas equals mole ratio of gas

Explanation:

Answer: 192g O2

Explanation:

Balanced equation

S + O2 → SO2

1mol O2 produces 1 mol SO2

6mol O2 required to produce 6 mol SO2

Molar mass O2 = 32g/mol

Mass of 6 mol O2 = 6*32 = 192g O2 required.

The value of the critical angle for total internal reflection at the water-ice interface is 48.6 degrees.

The greatest angle at which a beam of light traveling through one transparent media can strike the border between that medium and a second of lower refractive index without being completely reflected within the first medium is called the critical angle in optics.

So the value of the critical angle for total internal reflection at the water-ice interface is 48.6 degrees.

Hence the resultant critical angel is 48.6 degrees.

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Answer:

The molarity (M) of a solution is the number of moles of solute dissolved in one liter of solution. To calculate the molarity of a solution, you divide the moles of solute by the volume of the solution expressed in liters.

Explanation:

b. salt water is the correct answer

Which of the following is a solution?

A) milk

B) salt water

C) chlorine

D) muddy water

What is a solvent ?

A liquid that can dissolved in a solution.

What is a solute ?

A substance that is dissolved in a solution.

What is a solution ?

A solution is a homogeneous mixture of one or more solutes dissolved in a solvent.

Opition a)

Milk is not a solution. Milk is a mixture because milk has more than one phase suspended in it. Milk is a mixture of water, lipids, fats, proteins, and carbohydrates, as well as other substances.

Opition a is not the correct answer

Opition b)

Salt water is a solution. It is a solution because salt particles completely dissolve in water.

Opition b is the correct answer

Opition c)

Chlorine gas is an element. An element is a pure substance that consists of only one type of particle.

Opition d)

Muddy water is not a solution.It is a mixture. Solid dust and liquid have been mixed but the two but the two are not mixed on a molecular scale to form one state.

Opition d is not the correct answer

Answer: C7H6Br2

Explanation:

i got it right on acellus

Answer:

All waves of the electromagnetic spectrum have a speed of 3 × 10⁸ ms⁻¹

Answer:

Each atom has electrons, particles that carry electric charges. Spinning like tops, the electrons circle the nucleus, or core, of an atom. Their movement generates an electric current and causes each electron to act like a microscopic magnet

Explanation:

trust me

Filling that table

#Solid in liquid

#solid in a gas

#Gas in a liquid

#Solid in a liquid

#Liquid in gas

Answer:

J/gm-C

Explanation:

J/gm-C   is one set of units for specific heat

Answer:

[tex]\boxed{\small \sf \: Mass \: of \: H_2O =322.2 \: grams}[/tex]

Explanation:

Given:

Mass of ferous (Fe) produced = 750 gram.

To find:

Mass of water produced= ?

Solution:

Molar mass of Fe is 55.84 gram/mol

Let's find out the number of moles of ferous produced.

[tex] \small \sf Number \: of \: moles = \frac{Given \: mass \: of \: substance }{Molar \: mass \: of \: substance} [/tex]

Substituting the given data in above formula.

[tex] \small \sf Number \: of \: moles = \frac{750}{55.84} [/tex]

[tex] \boxed{\small \sf Number \: of \: moles \: of \: Fe= 13.43 \: moles}[/tex]

Now the given reaction is,

[tex]Fe_3O_4 + 4H_2 \rightarrow 3Fe + 4H_2O[/tex]

now calculate the number of moles of H2O

[tex] \sf \: \frac{3}{4} = \frac{13.43}{x} \\ \sf x = \frac{13.43 \times 4}{3} \\ \sf x = 17.90 \: moles[/tex]

[tex] \small \boxed{\sf number \: of \: moles \: of \: H_2O= 17.90 \: moles}[/tex]

mass of one mole of H2O is 18 gram, so we can calculate mass of 17.90 moles.

[tex]\small \sf \: Mass \: of \: H_2O = 17.90 \times 18 \\ \boxed{\small \sf \: Mass \: of \: H_2O =322.2 \: grams}[/tex]

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If the density of a gas is 1.2g/l at 745 torr and 20 degree C, then the molar mass of gas is 30 g/mole.

Ideal gas equation gives idea about the behavior of gas at different condition & represented as:

PV = nRT, where

On putting all these value in the above equation, we get moles

n = (745)(1) / (62.36)(293) =  0.04 mole

Molar mass will be calculate by using the below equation:

M = W/n, where

M = 1.2 / 0.04 = 30g/mol

Hence required molar mass of gas is 30g/mol.

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The value of Avogadro's number is:

[tex]N = 6.02214076*10^{23}[/tex]

So the correct option is the second one.

Avogadro's number represents the number of molecules in a mole.

The value of the Avogadro's number is such that the mass of one mole of a compound is numerically equal to the mass of that compound in daltons.

And, by definition, Avogadro's number is:

[tex]N = 6.02214076*10^{23}[/tex]

With this in mind, we conclude that the correct option is the second one.

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Answer:

Explanation:

6.02x10^23

#1

Moles of Oxygen =3

Molecules:-

#2

Its because according to law of conservation of mass- Mass is neither created nor destroyed

AS ITS BALANCED SO BOTH SIDES ARE SAME .

HENCE THEY OBEY

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

As per the given reaction, we can clearly observe that :

#1. How many Oxygen atoms are there in reactant and product side ?

- The number of Oxygen atoms is same as in reactant Side and product side, that is 6 atoms ~

#2. How does the reaction illustrate the law of conservation of mass ?

- According to law of conservation of mass, mass can neither be created nor be destroyed in a chemical reaction. so the mass of each element on reactant Side should be equal to that in the product side.

Now, let's check out if it's true for the given reaction ~

[tex]\qquad \sf  \dashrightarrow \: 4(27) + 3(32) = 2 \{(2 \sdot27) + (3 \sdot16) \}[/tex]

[tex]\qquad \sf  \dashrightarrow \:108 + 96= 2 \{54+ 48\}[/tex]

[tex]\qquad \sf  \dashrightarrow \:204= 2 \{102\}[/tex]

[tex]\qquad \sf  \dashrightarrow \:204= 204[/tex]

Hence, it's verified ~ that it follows law of conservation of mass ~

By applying Boyle's law, the new volume of this ideal gas is equal to 551.58 cm³.

Given the following data:

In order to determine the new volume of this ideal gas, we would apply Boyle's law.

Mathematically, Boyle's law is given by this formula:

PV = k

P₁V₁ = P₂V₂

Where:

Making V₂ the subject of formula, we have:

V₂ = (P₁V₁)/P₂

Substituting the given parameters into the formula, we have;

V₂ = (110.0 × 524)/104.5

V₂ = 57,640/104.5

V₂ = 551.58 cm³

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Answer:

ii.

Explanation:

Regulating weather patterns

Answer:

The solubility mainly depends on the composition of solute and solvent (including their pH and the presence of other dissolved substances) as well as on temperature and pressure.

Explanation:

The initial movement of groundwater into the atmosphere to form clouds is due to evaporation caused by solar radiation.

Evaporation is the process by which a liquid spontaneously turns to vapor as a result of temperature increase.

Ground water moves from the ground to the atmosphere when the radiant heat from the Sun turns liquid water to vapor.

Therefore, the initial movement of groundwater into the atmosphere to form clouds is due to evaporation caused by solar radiation.

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Answer:

A. Water changes from a solid to a liquid to a gas.

Explanation:

Answer:

it is removed In all types of chemical reactions, bonds are broken and reassembled to form new products. However, in exothermic, endothermic, and all chemical reactions, it takes energy to break the existing chemical bonds and energy is released when the new bonds form.

Explanation:

hope this helps if not let me know have a blessed day

Answer:

I don't now the answer but you can give branaillest to the other person how answered it

Explanation:

Boyle's Law

P₁V₁=P₂V₂

0.9 x 35 = 0.75 x V₂

V₂ = 42 L

Answer:

John Dalton

Explanation:

John Dalton developed the concept tittle: Dalton Law of Partial Pressure.

The formula is: Pt = Pa + Pb + Pc...... Pn

The temperature that water boils on the fahrenheit scale is c. 212°f.

Temperature conversation is a way of converting a temperature from a unit to another using conversation scale.

Therefore, on fahrenheit scale water boils at  212°f which is equivalent to 100°C on the Celcius scale.

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The volume of a sample of a gas at 0°c is 100 liters, if the volume of the gas is increased to 200 L at constant pressure, then new temperature is 546K.

Relation between the volume and temperature of any gas will be explained by using the ideal gas equation:

PV = nRT

Means volume and temperature is directly proportional to each other & for this question equation becomes:
V₁/T₁ = V₂/T₂, where

On putting all these values on the above equation, we get

T₂ = (200)(273) / (100) = 546 K

Hence resultant temperature of the gas is 546 K.

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A decomposition reaction is the breakdown of reactants into two or more products. The concentration of dinitrogen pentoxide after 4 minutes will be 1.63 moles.

The first-order rate constant (k) is the order of the reaction that is the initial rate and is given as 1/s.

The first order is shown as:

[tex]\rm [ln] A = \rm ln [A]_{o} - kt[/tex]

Given,

Initial concentration = 0.013 M

k =  [tex]6.82 \times 10^{-3}\;\rm s^{-1}[/tex]

t = 240 seconds

Substituting values above:

[tex]\begin{aligned} \rm [ln] A &= \rm ln[0.013] - 9 6.82\times 10^{-3} \times 240)\\\\[A] &= \rm e^{ln[0.013]} - (6.82 \times 10^{-3} s^{-1} \times 240 s)\\\\& = 1.6238\end{aligned}[/tex]

Therefore, 1.63 moles will remain after 4 minutes.

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Answer:

Option B

Explanation:

The given alkyl chloride having molecular formula ClCH2CHCl2, have IUPAC name 1,1,2 - trichloride ethane which can be represented in structural formula as shown in Option B, where the right carbon atom receives lower integer in numbering i.e. 1 and on the first carbon atom because it have two Chlorine atoms, and second carbon atom is numbered 2, having one Chlorine substituent on it.

Another reason for option A is incorrect answer, because the number of atoms in molecular formula & number of atoms in structural formula ain't same, in molecular formula there is a -CH2- & a -CH- substituent present, but in option A both the carbon atoms are -CH2- bonded to each other with chloride linkage.

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Answer:

Option B

Explanation:

[tex]\tt \dfrac{760~mmHg}{1~atm}\times 0.876~atm=665~mmHg[/tex]