All categories

3 years ago

PLZ HELP MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

Chemistry

1 answer:

Tpy6a [65]3 years ago

5 0

This is a lab assignment, you need to do something physically to find your answers

You might be interested in

Sound waves are mechanical waves in which the particles in the medium vibrate in a direction parallel to the direction of energy

Marat540 [252]

Longitudinal wave is the another name.

3 0

4 years ago

What is Le chatelier's principle?

ser-zykov [4K]

Answer:

Le Chatelier's principle, also called Chatelier's principle or "The Equilibrium Law", is a principle of chemistry used to predict the effect of a change in conditions on chemical equilibria.

hope it helps ,pls mark me as brainliest

7 0

3 years ago

The dissociation of calcium carbonate has an equilibrium constant of Kp= 1.20 at 800°C. CaCO3(s) ⇋ CaO(s) + CO2(g)

Fed [463]

Explanation:

(a) Formula that shows relation between $K_{c}$ and $K_{p}$ is as follows.

$K_c = K_p \times (RT)^{-\Delta n}$

Here, $\Delta n$ = 1

Putting the given values into the above formula as follows.

$K_c = K_p \times (RT)^{-\Delta n}$

= $1.20 \times (RT)^{-1}$

= $\frac{1.20}{0.0820 \times 1073}$

= 0.01316

(b) As the given reaction equation is as follows.

$CaCO_{3}(s) \rightleftharpoons CaO(s) + CO_{2}(g)$

As there is only one gas so ,

$p[CO_{2}] = K_{p}$ = 1.20

Therefore, pressure of $CO_{2}$ in the container is 1.20.

(c) Now, expression for $K_{c}$ for the given reaction equation is as follows.

$K_{c} = \frac{[CaO][CO_{2}]}{[CaCO_{3}]}$

= $\frac{x \times x}{(a - x)}$

= \frac{x^{2}}{(a - x)}[/tex]

where, a = initial conc. of $CaCO_{3}$

= $\frac{22.5}{100} \times 9.56$

= 0.023 M

0.0131 = $\frac{x^{2}}{0.023 - x}$

x = 0.017

Therefore, calculate the percentage of calcium carbonate remained as follows.

% of $CaCO_{3}$ remained = $(\frac{0.017}{0.023}) \times 100$

= 75.46%

Thus, the percentage of calcium carbonate remained is 75.46%.

3 0

4 years ago

What is true of an Arrhenius acid?

expeople1 [14]

<span>B, An Arrhenius acid donates H+ ions.</span>

5 0

3 years ago

What is the balanced chemical equation for Benzoic acid + octanol ?

Oxana [17]

Answer:

C7H6O2+C8H17OH=C15H22O2+H2O

Explanation:

by reacting alcohol and acid we get ester and water

3 0

3 years ago