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2 years ago

11

Which of the following do you pracrice at home

1 answer:

S_A_V [24]2 years ago

8 0

You didn’t post the photo or full question

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The equilibrium constant, Kc, for the following reaction is 0.967 at 650 K. 2NH3(g) N2(g) 3H2(g) When a sufficiently large sampl

AlekseyPX

Answer: Concentration of $NH_3$ in the equilibrium mixture is 0.31 M

Explanation:

Equilibrium concentration of $H_2$ = 0.729 M

The given balanced equilibrium reaction is,

$2NH_3(g)\rightleftharpoons N_2(g)+3H_2(g)$

Initial conc. x 0 0

At eqm. conc. (x-2y) M (y) M (3y) M

The expression for equilibrium constant for this reaction will be:

3y = 0.729 M

y = 0.243 M

$K_c=\frac{[y]\times [3y]^3}{[x-2y]^2}$

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

$K_c=\frac{0.243\times (0.729)^3}{(x-2\times 0.243)^2}$

$0.967=\frac{0.243\times (0.729)^3}{(x-2\times 0.243)^2}$

$x=0.80$

concentration of $NH_3$ in the equilibrium mixture = $0.80-2\times 0.243=0.31$

Thus concentration of $NH_3$ in the equilibrium mixture is 0.31 M

3 0

3 years ago

My question is on the image

Rainbow [258]

Answer:

Top left: RR Top right: Rr Bottom left: Rr Bottom right: rr

Explanation:

if both parents are heterozygous then the table will always look like this. the chances of the offspring being heterozygous are 50%. the offspring has a 25% chance of having two recessive traits and a 25% chance of having two dominant traits.

4 0

3 years ago

Overfishing causes the yellow perch population in this food

Angelina_Jolie [31]

Answer:

shrimp

Explanation:

3 0

3 years ago

9. A gas occupies 8.2 L at 48°C and 750. torr. What volume will the gas occupy at STP?

slava [35]

Answer: The volume the gas will occupy at STP is 6.9 L

Explanation:

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

where,

$P_1$ = initial pressure of gas = 750 torr = 0.99 atm (760torr=1atm)

$P_2$ = final pressure of gas = 1 atm (at STP)

$V_1$ = initial volume of gas = 8.2 L

$V_2$ = final volume of gas = ?

$T_1$ = initial temperature of gas = $48^oC=273+48=321K$

$T_2$ = final temperature of gas = $273K$ (at STP)

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

$\frac{0.99\times 8.2}{321}=\frac{1\times V_2}{273}$

$V_2=6.9$

Thus volume the gas will occupy at STP is 6.9 L

7 0

3 years ago

Explain how the temperature of a substance is<br> related to the kinetic energy of its molecules

marta [7]

As temperature increases, kinetic energy increases.

4 0

3 years ago