Plzzz help pls How many liters are in 6.74 x 1023 particles of PbCl2?

Hot air balloon conductors only partially fill the balloon before they heat the gas. As the gas warms, it expands to fill the ba

Tomtit [17]

Answer:

Charles' Law

Explanation:

Charles' law states that at constant pressure, the volume of a fixed mass of gas is directly proportional to the absolute temperature. This implies that as the temperature of the gas is increased, the volume of the gas also increases and as the temperature is decreased, the volume also decreases.

From the question given above, we were told that as the gas warms ( i.e increase in temperature), it expands to fill the fill the balloon. This is clearly charles' law because the volume of the gas increased with increasing temperature.

8 0

3 years ago

Read 2 more answers

The equilibrium constant for the reaction of fluorine gas with bromine gas at 300 K is 54.7 and the reaction is: Br2(g) + F2(g)

alisha [4.7K]

Answer:

The correct answer is 0.024 M

Explanation:

First we use an ICE table:

Br₂(g) + F₂(g) ⇔ 2 BrF(g)

I 0.111 M 0.111 M 0

C -x -x 2 x

E 0.111 -x 0.111-x 2x

Then, we replace the concentrations of reactants and products in the Kc expression as follows:

Kc= $\frac{[BrF ]^{2} }{[ F_{2} ][Br_{2} ]}$

Kc= $\frac{(2x)^{2} }{(0.111-x)(0.111-x)}$

54.7= $\frac{4x^{2} }{(0.111-x)^{2} }$

We can take the square root of each side of the equation and we obtain:

7.395= $\frac{2x}{(0.111-x)}$

0.111(7.395) - 7.395x= 2x

0.82 - 7.395x= 2x

0.82= 2x + 7.395x

⇒ x= 0.087

From the x value we can obtain the concentrations in the equilibrium:

[F₂]= [Br₂]= 0.111 -x= 0.111 - 0.087= 0.024 M

[BrF]= 2x= 2 x (0.087)= 0.174 M

So, the concentration of fluorine (F₂) at equilibrium is 0.024 M.

8 0

4 years ago

She dissolves a 10.0mg sample in enough water to make 30.0mL of solution. The osmotic pressure of the solution is 0.340torr at 2

uranmaximum [27]

Answer:

(a)The molar mass of the gene fragment is 18220.071g/mol = 18.22 kg/mol

(b)The freezing point for the aqueous solution is $-3.413\times10^{-5}$ C

Explanation:

The osmotic pressure (π) is given by the following equation:

$\pi =cRT$

$c$ = Concentration of solution

R = universal gas constant = 62.364 $\frac{L\times torr}{mol\times K}$

T = temperature

Weight of solute = w = 10.0 mg

Let the molecular weight of the solute be m g/mol.

Concentration = $c=\frac{n}{V}\\ n=\frac{w}{m}\\ n=\frac{10\times10^{-3}}{m}\\c=\frac{10\times10^{-3}}{m\times30\times10^{-3}}M$

$m=\frac{RT}{3\pi}$

m = 18220.071g/mol

Therefore, the molar mass of the gene fragment is 18220.071g/mol = 18.22 kg/mol

$\Delta T_{f}=K_{f}m$

m is the molality of the solution.

m = $1.835\times10^{-5}$ mol/kg

$\Delta T_{f}=1.86\times m$

$\Delta T_{f}$ = $3.413\times10^{-5}$ C

The freezing point for the aqueous solution is $-3.413\times10^{-5}$ C

8 0

3 years ago

What are some properties of matter that can be identified without testing or measuring

kiruha [24]

Physical change - No change of matter in this phase
chemical change - All types of phase change occur here

8 0

3 years ago

What is the mechanism by which Ozone is formed in the presence of sunshine?

katovenus [111]

Stratospheric ozone is formed naturally through the interaction of UV radiation with molecular oxygen.

not sure if this is what you want but hope it helps!!!

8 0

3 years ago