Which images show a container holding a heterogeneous mixture?

Answer:

[tex]\boxed {\boxed {\sf 2.62 \ mol \ N_2}}[/tex]

Explanation:

The relationship between moles and gases is unique. Regardless of the type of gas, there will always be 22.4 liters of gas in 1 mole, as long as it's at STP (standard temperature and pressure).

We can make a ratio using this information.

[tex]\frac {22.4 \ L \ N_2}{ 1 \ mol \ N_2}[/tex]

Multiply by the given number of moles.

[tex]58.6 \ L \ N_2 *\frac {22.4 \ L \ N_2}{ 1 \ mol \ N_2}[/tex]

Flip the fraction so the liters of nitrogen cancel.

[tex]58.6 \ L \ N_2 *\frac {1 \ mol \ N_2}{ 22.4 \ L \ N_2}[/tex]

[tex]58.6 *\frac {1 \ mol \ N_2}{ 22.4 }[/tex]

[tex]\frac {58.6 \ mol \ N_2}{ 22.4 }= 2.61607143 \ mol \ N_2[/tex]

The original measurement of liters has 3 significant figures, so our answer must have the same.

For the number of moles calculated, 3 sig figs is the hundredth place. The 6 in the thousandth place tells us to round the 1 to a 2.

[tex]2.62 \ mol \ N_2[/tex]

58.6 liters of N₂ gas at STP is equal to about 2.62 moles.

Answer:positive

Explanation:

Answer:

Positive.

Explanation:

Since a neutral charge won't cancel out a positive charge, the overall charge of a nucleus is positive.

D

all of above becuase it's all conservation

Answer:

The answer is c which is pollution is likely to decrease water supply in the future

Answer:

C they all have oxygen

Explanation:

look they all have oxygen , carbon has it so does the

Answer:

the pressure is equal to 0.2atm

The pressure at which the volume of the gas is 2 L at the same temperature as when the volume of a gas is 400 mL and pressure 1 atm is 0.2 atm.

According to combined gas law,

[tex]\rm \dfrac{PV}{nT} = R[/tex]

In the Combined Gas Law,if we change either one of the variables the others will also change.

When the moles of the gas is constant , the above equation can be written as ,

[tex]\rm \dfrac{P'V'}{T'} = \dfrac{PV}{T}[/tex]

Given is P = 1 atm , V= 400ml , V'= 2L= 2000ml , P'= ? T=T'

So we will substitute the values in the above formula keeping temperature constant.

[tex]\rm P'V' = PV\\\\\rm P' \times 2000 = 1 \times 400\\ \\\m P'= \dfrac{1\times 400}{2000} = 0.2 \; atm\\\\\rm P' = 0.2 \; atm\\[/tex]

Therefore the pressure at which the volume of the gas is 2 L at the same temperature as when the volume of a gas is 400 mL and pressure is 1 atm is 0.2 atm.

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Answer:

Im pretty sure its Combustion

Answer:

hydrogen

Explanation:

this is a reaction between to elements your other element would consist of deuterium but since you pick one you pick the only elemnt that creates this newclear fusion.

Answer:

See explanation

Explanation:

The synthesis of aspirin is shown in the reaction scheme attached to this answer. The production of aspirin involves the reaction of acetyl salicyclic acid and acetic anhydride. HA in the reaction mechanism refers to an acid that is used in the reaction

Similarly  benzamide, is converted to the carbonyl carbocation by reaction with acid. The -NH2 group is protonated and subsequently departs as a leaving group. An OH^- completes the mechanism forming a carboxylic acid. The movement of electrons is shown in the image attached.

Again, the diazotization of benzamide using sodium nitrate and concentrated HCl yields benzene diazonium chloride. Addition of water to benzene diazonium chloride yields the benzoic acid and nitrogen gas.

Answer:

time

Explanation:

time can be controlled and set while all the others can't be necessarily controlled

Answer:

66.13 cm³

Explanation:

Using the ideal gas equation, PV = mRT/M where P = pressure = 1.013 × 10⁵ N/m², V = volume of liquid vaporized = volume of air displaced, m = mass of organic liquid = 0.33 g, M = molar mass of gas = 120 g/mol and R = molar gas constant = 8.314 J/mol-K and T = temperature at vaporization = 293 K.

PV = mRT/M

So, V = mRT/PM

Substituting the values of the variables into the equation, we have

V = 0.33 g × 8.314 J/mol-K × 293 K/(1.013 × 10⁵ N/m² × 120 g/mol)

V = 803.881/121.56 × 10⁻⁵ m³

V = 6.613 × 10⁻⁵ m³

V = 6.613 × 10⁻⁵ × 1m³

V = 6.613 × 10⁻⁵ × 10⁶ cm³

V = 6.613 × 10 cm³

V = 66.13 cm³

Answer:

Explanation:

ℎ ℎ

Answer:

I dont know im very sorry

Answer:

Fossils

Explanation:

Ancient plants and animal formed into rocks called fossils.

A fossil can be defined as the mineral impression or remains of living organisms such as plants and animals that are prehistoric in nature.

A geologic column can be defined as a collection of rock layers that are typically grouped based on their relative ages in a descending order i.e from oldest to the youngest.

Generally, the layers of the rock that are found in various parts of the world are known to be different because they all comprises of distinct Earth's geological history (fossils).

it shoudl be : 2Fe(NO3)3 + 3MgSO4 → 3Mg(NO3)2 + Fe2(SO4)3

(the difference is Fe2(SO4)3 has no coefficient)

Answer:

Explanation:

dfghyuiop[]5565677dam u baddie no comparing

Answer:

Root mean squared velocity is different.

Explanation:

Hello!

In this case, since we have a mixture of oxygen and nitrogen at STP, which is defined as a condition whereas T = 298 K and P = 1 atm, we can infer that these gases have the same temperature, pressure, volume and moles but a different root mean squared velocity according to the following formula:

[tex]v_{rms}=\sqrt{\frac{3RT}{MM} }[/tex]

Since they both have a different molar mass (MM), nitrogen (28.02 g/mol) and oxygen (32.02 g/mol), thus we infer that nitrogen would have a higher root mean squared velocity as its molar mass is less than that of oxygen.

Best regards!

A mole of oxygen and a mole of hydrogen (at STP) don't have common root mean square velocity.

Root mean square velocity of any gas is calculated as:
Vr = √3RT / M, where

R = universal gas constant

T = temperature,

M = molar mass

As in the question it is given that amount of gases are taken in standard condition i.e. 273 K temperature and 1 atm pressure, but mass of hydrogen and oxygen is different. So the resultant root mean square velocity of hydrogen and oxygen gas is different.

Hence, root mean square velocity of hydrogen and oxygen gas is different at STP.

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Answer:

255.51 cm³

Explanation:

From the question given above, the following data were obtained:

Initial temperature (T₁) = 50° C

Final temperature (T₂) = –5° C

Final volume (V₂) = 212 cm³

Initial volume (V₁) =?

Next, we shall convert celsius temperature to Kelvin. This can be obtained as follow:

T(K) = T(°C) + 273

Initial temperature (T₁) = 50° C

Initial temperature (T₁) = 50° C + 273

Initial temperature (T₁) = 323 K

Final temperature (T₂) = –5° C

Final temperature (T₂) = –5° C + 273

Final temperature (T₂) = 268 K

Finally, we shall determine the initial volume of the hydrogen gas. This can be obtained as follow:

Initial temperature (T₁) = 323 K

Final temperature (T₂) = 268 K

Final volume (V₂) = 212 cm³

Initial volume (V₁) =?

V₁/T₁ = V₂/T₂

V₁ / 323 = 212 / 268

Cross multiply

V₁ × 268 = 323 × 212

V₁ × 268 = 68476

Divide both side by 268

V₁ = 68476 / 268

V₁= 255.51 cm³

Therefore, the initial volume of the hydrogen gas 255.51 cm³

The correct option is option A. when the students check the air pressure of bicycle tires, once by keeping it out in the winter and noticing the air pressure being decreased and after by keeping the bicycle inside at room temperature and noticing that the air pressure has increased.

According to Gay lussac's law, the temperature and pressure of a gas are directly proportional to each other, provided the volume is constant.

When the temperature of a gas is increased, the molecules gain more kinetic energy and hence the frequency of them hitting the walls of the container increases which basically implies that the pressure increases.

On the other hand when the temperature is low, the molecules do not have substantial kinetic energy to hit the walls of the container frequently, that is the pressure decreases.

When the bicycle tires were kept out in the winter, the low temperature decreased the air pressure inside the tires. While when they were warmed at room temperature, the pressure inside the tires increased.

Therefore, the correct option is option A.  when the students check the air pressure of bicycle tires, once by keeping it out in the winter and noticing the air pressure being decreased and after by keeping the bicycle inside at room temperature and noticing that the air pressure has increased.

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    ZINC

To identify the element based on the informartion given, we have to find the molar mass since this mass is unique to each element.

            Molar mass = mass ÷ moles

We already know the mass based on the question, as such we now need to find the # of moles.

           Since 1 mole contains 6.02214 × 10²³ atoms

      then let  x moles contain 4.19 × 10²³ atoms (given in the question)

      ⇒   x =  (4.19 × 10²³ atoms  ×  1 mol) ÷ 6.02214 × 10²³ atoms

              x  =  0.69577 mol

Now that we have the moles we can substitute it into the molar mass equation and solve for the molar mass.

           ⇒ molar mass = 45.6 g ÷ 0.69577 mol

           ⇒ molar mass ≈  65.54 g/mol

                    This molar mass is closest to that of ZINC.

Answer:

The increase in the concentration of reactants increases the frequency of effective collisions.

Explanation:

The concentration of reactants determines the rate of reaction by providing the number of reactants available to yield an effective collision. There is a direct relationship between the concentration of reactants and rate of reaction.

Answer:

183g

Explanation:

mass can't be created or destroyed so i think you just add up the total amounts of matter

2.63 g

Explanation:

One way to approach this problem is to determine the percent composition of hydrogen in water.

Answer:

704.6 g CO2

Explanation:

MM sucrose = 342.3 g/mol

MM CO2 = 44.01 g/mol

g CO2 = 456.7 g sucrose x (1 mol sucrose/MM sucrose) x (12 moles CO2/1 mol sucrose) x (MM CO2/1mol CO2) = 704.6 g CO2

Answer:

the structure of atom which discovered by Thomson the describe on how the sub-atomic particles are arranged in an atom

Answer:

true

downstream to the riverbed. However, the most common mechanism to produce older rocks on top of younger is by thrust faulting. Thrust faults form where rocks are being compressed, usually by plate tectonic mechanisms. Thrust faults rip up older strata and pile it on top of younger rocks.

Explanation:

Answer:

I will say to my friend that

pure or distilled water does not conduct electricity

but instead of this.

water conduct electricity

be aware of it

Answer:

0.01.

Explanation:

This is because, if you divided one rectangle by ten, it will give 0.1

That is 1/10 = 0.1

If each of the smaller rectangles is divided by 10.

It will be 0.1/10 which will be equal to 0.01.

The rectangles will be 0.01 each.