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3 years ago

Brainiest plsss helpp

Chemistry

2 answers:

ddd [48]3 years ago

6 0

Answer:

A) 19230 kg/ m3

Explanation:

divided it's mass by its volume ti get it's density

500/0.026 = 19230

svlad2 [7]3 years ago

3 0

Answer:

$\boxed {\boxed {\sf A. \ 19,320 \ kg/m^3}}$

Explanation:

We want to find the density. The formula is mass over volume.

$\rho = \frac{m}{v}$

The mass is 500 kilograms. The volume is 0.026 cubic meters.

$m= 500 \ kg \\v=0.026 \ m^3$

Substitute the values into the formula.

$\rho= \frac{ 500 \ kg}{ 0.026 \ m^3}$

Divide.

$\rho = 19230.7692 \ kg/m^3$

This is just about equal to 19,320 kg/m³, so choice A is correct.

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Nitric oxide is formed in automobile exhaust when nitrogen and oxygen in air react at high temperatures.N2(g) + O2(g) 2NO(g)The

yanalaym [24]

Answer : The correct option is, (E) 7.8 atm

Explanation :

The partial pressure of $N_2$ = 8.00 atm

The partial pressure of $O_2$ = 5.00 atm

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The balanced equilibrium reaction is,

$N_2(g)+O_2(g)\rightleftharpoons 2NO(g)$

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At eqm. (8.00-x) (5.00-x) 2x

The expression of equilibrium constant $K_p$ for the reaction will be:

$K_p=\frac{(p_{NO})^2}{(p_{N_2})(p_{O_2})}$

Now put all the values in this expression, we get :

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By solving the terms, we get:

$x=0.15atm$

The equilibrium partial pressure of $N_2$ = (8.00 - x) = (8.00 - 0.15) = 7.8 atm

Therefore, the equilibrium partial pressure of $N_2$ is 7.8 atm.

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3 years ago

If the mixing ratio of a parcel of air is 6 grams per kilogram and the relative humidity is 25 percent, the saturation mixing ra

Y_Kistochka [10]

Answer: -

24 grams per kilogram.

Explanation: -

We know that

The mixing ratio = actual (measured) mass of water vapor (in parcel) in grams / mass of dry (non water vapor) air (in parcel) in kilogram

The saturation mixing ratio = mass of water vapor required for saturation (in parcel) in grams/ mass of dry (non water vapor) air (in parcel) in kilograms

Relative humidity = actual (measured) water vapor content/ maximum possible water vapor amount (saturation)

Thus saturation mixing ratio = Mixing ratio / relative humidity

= 6 / (25/100)

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cestrela7 [59]

Answer:

false

Explanation:

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professor190 [17]

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