How is the average speed of gas molecules related to temperature of the gas ?

According to the balanced equation H2(g) + Cl2(g) → 2HCl(g), one mole of chlorine gas reacts with one mole of hydrogen gas. The balanced equation indicates a 1:1 ratio between chlorine and hydrogen.

The balanced equation H2(g) + Cl2(g) → 2HCl(g) shows the stoichiometry of the reaction between hydrogen gas (H2) and chlorine gas (Cl2) to form hydrogen chloride gas (HCl). In this equation, the coefficients represent the number of moles of each substance involved in the reaction.

The equation shows that one mole of chlorine gas reacts with one mole of hydrogen gas. This means the ratio between chlorine and hydrogen is 1:1. For every mole of hydrogen gas, one mole of chlorine gas is required to ensure the reaction proceeds according to the balanced equation.

It is important to note that stoichiometry allows us to determine the quantitative relationship between reactants and products in a chemical reaction. In this case, the balanced equation tells us that one mole of chlorine gas is necessary to completely react with one mole of hydrogen gas, forming two moles of hydrogen chloride gas.

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Answer: the answer is A

Explanation:

well I just know

Answer:

it's blue/green

Explanation:

Answer:

Answer:

Potassium : 39.0983u

Sodium : 22.989769u

Neon : 20.1797u

To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons

Hope this helps!

Answer:

the reaction was that it turned green. because it used to be brown but because the rain and carbon dioxide affected it.

Answer:

b

Explanation:

The statement that is true about what can occur in a chemical change is b. Elements may combine to form compounds.

A chemical change can be described as the change which do take place when the substance's composition is been altered which could bring about the formation of another substance.

It should be noted that in the chimical change there is uaually a formation of a new product after one or more substance must have reacted together which implies that in this kind of change there is usuall a new substance that will be formed in the process.

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Answer:

Explanation:

To find the molarity, we have an equation: moles ÷ liter.

To find the moles of NaF, take the gram ÷ molar mass of NaF

7.13/42.0 = 0.170 moles of NaF

201 ml ÷ 1000 = 0.201L

Answer:

melting point (550 K) up to 650 K.

Explanation:

The thermal conductivity exhibits a sharp drop in the temperature interval from the melting point (550 K) up to 650 K. At higher temperatures the thermal conductivity exhibits almost no temperature dependence.

Answer:

In my opinion the third one is write.

Explanation:

soil.

Answer:

Fire is a chemical reaction between oxygen and the fuel. If you want to put out a fire, just get rid of one of those three things – fuel, oxygen or heat. ...It also prevents oxygen from reaching the fuel. Most fire extinguishers work by separating the fuel from the oxygen.

Explanation:

Answer:

It is a chemical change

Explanation:

Answer:

i think false if i was wrong sorry (๑ơ ₃ ơ)♥

Approximately 1.375 grams of sodium-24 remains after 60 hours.

The half-life of sodium-24 is 15 hours, which means that after every 15 hours, half of the remaining sodium-24 will decay.

To calculate the amount of sodium-24 remaining after 60 hours, we can divide the total time (60 hours) by the half-life (15 hours) to determine the number of half-life intervals.

Number of half-life intervals = 60 hours / 15 hours = 4 intervals

Since each half-life interval results in a halving of the amount, we can calculate the remaining amount of sodium-24 by multiplying the initial amount (22 grams) by (1/2) four times:

Remaining amount of sodium-24 = 22 grams * (1/2)^4 = 22 grams * (1/16) ≈ 1.375 grams

Therefore, approximately 1.375 grams of sodium-24 remains after 60 hours.

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The mass ratio of CO₂ in the Mars atmosphere is predicted to be 3:8.

Given that the mass ratio of carbon to oxygen in CO₂ in the Earth's atmosphere is 3:8, we can assume that the same ratio applies to CO₂ in the Mars atmosphere. This assumption is based on the fact that carbon and oxygen have similar chemical properties and tend to form compounds in consistent ratios.

Therefore, we can predict that the mass ratio of carbon to oxygen in CO₂ in the Mars atmosphere would also be 3:8. This means that for every 3 units of carbon, there would be 8 units of oxygen in CO₂ on Mars.

It is important to note that this prediction is based on the assumption that the composition of CO₂ in the Mars atmosphere follows similar patterns to that of Earth. However, it's worth considering that the actual composition of the Mars atmosphere may differ, and more accurate measurements and analyses would be necessary to determine the exact mass ratio of CO₂ on Mars.

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Answer:

The answer is D, I would type it out but it is to long and I'm kind of lazy, but anyways! Your answer is D

Hope This Helps!

Answer:

2 aluminum reacts with sulfuric acid

Two elements having same properties as magnesium are calcium and strontium. The number of protons and neutrons in  potassium is 19 and number of neutrons is 20.

Groups in periodic table are vertical columns with elements of similar physical and chemical properties. All elements are classified into different groups based in the number of valence shell electrons.

Elements of same group have same number of valence electrons. The element magnesium Mg have 12 electrons with 2 valence electrons. Its group members are shown under Mg in the column and they are calcium, strontium and rubidium.

Number of electrons in an tom is equal to the number of protons and this is called the atomic number. The atomic number o potassium is 19 and it have 19 electrons and protons.

Number of electrons = mass number-number of protons

                                   = 39 -19 =20.

Hence, potassium  (K) have 19 electrons and protons and 20 neutrons.

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Answer:

It is present in the second group of the periodic table

Explanation:

Answer: that there are two valence electrons

Answer:

1.099 gmL¯¹ ≈ 1.1 gmL¯¹

Explanation:

From the question given above, the following were obtained:

Mass of empty cylinder = 9.5 g

Mass Cylinder + NaOH = 31.92 g

Volume of solution = 20.4 mL

Concentration of solution =?

Next, we shall determine the mass of sodium hydroxide, NaOH. This can be obtained as as illustrated below:

Mass of empty cylinder = 9.5 g

Mass Cylinder + NaOH = 31.92 g

Mass of NaOH =?

Mass of NaOH = (Mass Cylinder + NaOH) – (Mass of empty cylinder)

Mass of NaOH = 31.92 – 9.5

Mass of NaOH = 22.42 g

Finally, we shall determine concentration of the solution as follow:

Mass of NaOH = 22.42 g

Volume of solution = 20.4 mL

Concentration of solution =?

Concentration = mass /volume

Concentration of solution = 22.42 / 20.4

Concentration of solution = 1.099 gmL¯¹ ≈ 1.1 gmL¯¹

Therefore, the concentration of the solution is 1.1 gmL¯¹

The order of increasing rate of effusion is: C₂H₆ < PH₃ < HCl < Ar.

The rate of effusion for a gas depends on its molar mass and the temperature. According to Graham's law of effusion, the rate of effusion is inversely proportional to the square root of the molar mass. Therefore, gases with lower molar masses will effuse faster than those with higher molar masses at the same temperature.

To arrange the gases in order of increasing rate of effusion, we need to compare their molar masses:

Ar (argon): Molar mass = 39.95 g/mol

HCl (hydrogen chloride): Molar mass = 36.46 g/mol

PH₃ (phosphine): Molar mass = 33.99 g/mol

C₂H₆ (ethane): Molar mass = 30.07 g/mol

Now, we can compare the molar masses and determine the order of increasing rate of effusion:

C₂H₆ (ethane): It has the lowest molar mass among the given gases, so it will have the highest rate of effusion.

PH₃ (phosphine): It has a higher molar mass than ethane but lower than hydrogen chloride and argon. Therefore, it will have a higher rate of effusion compared to hydrogen chloride and argon but lower than ethane.

HCl (hydrogen chloride): It has a higher molar mass than both ethane and phosphine. Hence, it will have a lower rate of effusion than ethane and phosphine.

Ar (argon): It has the highest molar mass among the given gases, so it will have the lowest rate of effusion.

Therefore, the order of increasing rate of effusion is:

C₂H₆ < PH₃ < HCl < Ar

In summary, ethane (C₂H₆) will have the highest rate of effusion, followed by phosphine (PH₃), hydrogen chloride (HCl), and finally, argon (Ar), which will have the lowest rate of effusion.

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Answer:

C

Explanation:

because it is product over reactants. hope this helps :)

The equilibrium expression for the reaction C(s) +\(O_{2}\)(g) ⇄ \(CO_{2}\) (g) will be

[\(CO_{2}\) ] / [ \(O_{2}\) ].

Chemical equilibrium is a state where no net change in the quantities of reactants as well as products takes place during a reversible chemical reaction.

The given reaction is C(s) +\(O_{2}\)(g) ⇄ \(CO_{2}\) (g) .

It is known that solid phase is not considered in equilibrium.

Hence, equilibrium expression = [\(CO_{2}\) ] / [ \(O_{2}\) ].

Therefore, the correct answer will be option (D).

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Answer:

Saber tooth tiger

Explanation:

Saber tooth tiger is pretty dangerous and around the world are few meaning were killed

Answer:

The reactants have more heat energy than the products.

Explanation:

The reactants in an exothermic reaction have higher potential heat energy than the products, this is because they release the energy as heat.

Answer:

just took test is the reactants have more heat

Explanation:

The result table indicate that A. The solute is a SOLID because it has a DECREASE in the amount dissolved as temperature decreases.

The solubility of a solid solute in a liquid solvent generally decreases as the temperature decreases. This is because the kinetic energy of the solute molecules decreases as the temperature decreases. As the kinetic energy of the solute molecules decreases, they are less likely to have enough energy to escape from the solution and enter the gas phase.

In the table, as the temperature decreases, the concentration of the solute in the solution decreases. This indicates that the solute is a solid and that the solubility of the solute decreases as the temperature decreases.

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Answer:

Cooperation

Explanation:

Those animals are understanding the needs of each other.

Answer:

4.  0.5 kilometers (1st option)

5.  0.1 00 liters (last option)

Explanation:

500 meters to kilometers

4.

1 kilometer = 1000 meters

We use the formula SBD (SMALL TO BIG DIVIDE) i hope this helps you

500 ÷ 1000

= 0.5 kilometers

5.

100 milliliter to liter

SBD

100 ÷ 1000

= 0.1 00 liters

Answer:

A lone pair is a pair of electrons occupying an orbital in an atom or molecule and not directly involved in bonding.

Explanation:

Answer:

A pair of electrons that is not used in bonding

Explanation:

I took the test

Answer: The solution with pH of 14 will be a strong base.

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.

\(pH=-log[H^+]\)

Acids have pH ranging from 1 to 6.9, bases have pH ranging from 7.1 to 14 and neutral solutions have pH equal to 7. Thus pH scale range from 1 to 14.

Strong acids have low pH ( around 1 ) values where as strong bases have high pH ( around 14) values.

Answer:

on my test the answer was a strong acid

Explanation:

Answer:

\(1.7137\ \text{mg/L}\)

Explanation:

Chlorine gas available = 27 lbs = \(27\times 453.59237=12247\ \text{g}\)

Amount of water used each day = 750000 gal = \(750000\times3.785411784=2839058.84\ \text{L}\)

Rate at which chlorine gas used = 2.6 mg/L

Chlorine gas used

\(2839058.84\times 2.6\times 10^{-3}=7381.55\ \text{g}\)

Residual content of chlorine = \(12247-7381.55=4865.45\ \text{g}\)

Concentration of the residual chlorine is given by

\(\dfrac{4865.45}{2839058.84}=0.0017137\ \text{g/L}=1.7137\ \text{mg/L}\)

Concentration of the residual chlorine is \(1.7137\ \text{mg/L}\).