3 years ago

How many moles of gas Does it take to occupy 520 mL at a pressure of 400 torr and a temperature of 340 k

Chemistry

1 answer:

Lubov Fominskaja [6]3 years ago

3 0

Answer would be B. I provided work on an image attached. Message me if u have any other questions on how to do it

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Will mark as Brainliest.

viktelen [127]

B) Bohr's Atomic Model

8 0

3 years ago

Find the density of a substance whose volume is 10.0 mL and whose mass is 5.000 g

scoray [572]

Answer:

.5 gm / ml

Explanation:

Density is defined as mass/ volume

so density of this substance is 5 gm / 10 ml = .5 gm/ ml

5 0

2 years ago

As the volume of confined gas decreases at the constant temperature, the pressure exerted by the gas________________.

Nezavi [6.7K]

As the volume of the confined gas decreases at the constant temperature, the pressure exerted by the gas increases.

8 0

3 years ago

Calculate the value of the diffusion coefficient D (in m2/s) at 547°C for the diffusion of some species in a metal; assume that

svetlana [45]

Answer : The value of diffusion coefficient is, $2.97\times 10^{-16}m^2/s$

Explanation :

Formula used :

$D=D_o\times \exp \left(-\frac{Q_d}{RT}\right )$

where,

D = diffusion coefficient = ?

$D_o$ = $5.6\times 10^{-5}m^2/s$

$Q_d$ = $177kJ/mol$

R = gas constant = 8.314 J/mol.K

T = temperature = $547^oC=273+547=820K$

Now put all the given values in the above formula, we get:

$D=5.6\times 10^{-5}m^2/s\times \exp \left(-\frac{177kJ/mol}{(8.314J/mol.K)\times (820K)}\right )$

$D=2.97\times 10^{-16}m^2/s$

Thus, the value of diffusion coefficient is, $2.97\times 10^{-16}m^2/s$

6 0

3 years ago

How do you convert scientific notation into SI base units?

Jobisdone [24]

For example 4.698*10^4
This is scientific notation
=46980

6 0

3 years ago