All categories

3 years ago

1. Which processes are taking place in the system represented by the following equation?

Chemistry

1 answer:

dimaraw [331]3 years ago

4 0

For the first question:
The double directional arrow (→←) shows that the equation is moving at both directions (forward and reverse) simultaneously (at the same time).
So for the equation, two processes are happening at the same time:
1- Carbon monoxide combines with oxygen to form carbon dioxide
2CO2 + O2 ..........> 2CO2
2- Carbon dioxide dissociates to give carbon monoxide and oxygen
2CO + O2 <........ 2CO2

For the second question:
The equilibrium constant can be calculated as shown in the attached picture.
Applying this rule to the given equation, we find that:
k= [(0.01^1)(0.01^1)] / [(0.8^2)] = 1.5625 x 10^-4

You might be interested in

A compound contains 1.2 g of carbon, 3.2 g of oxygen and 0.2g of hydrogen. Find the formula of the compound

Karolina [17]

Answer:

The empirical formula of the compound is $C_{0.504}HO_{1.008}$ .

Explanation:

We need to determine the empirical formula in its simplest form, where hydrogen ( $H$ ) is scaled up to a mole, since it has the molar mass, and both carbon ( $C$ ) and oxygen ( $O$ ) are also scaled up in the same magnitude. The empirical formula is of the form:

$C_{x}HO_{y}$

Where $x$ , $y$ are the number of moles of the carbon and oxygen, respectively.

The scale factor ( $r$ ), no unit, is calculated by the following formula:

$r = \frac{M_{H}}{m_{H}}$ (1)

Where:

$m_{H}$ - Mass of hydrogen, in grams.

$M_{H}$ - Molar mass of hydrogen, in grams per mole.

If we know that $M_{H} = 1.008\,\frac{g}{mol}$ and $m_{H} = 0.2\,g$ , then the scale factor is:

$r = \frac{1.008}{0.2}$

$r = 5.04$

The molar masses of carbon ( $M_{C}$ ) and oxygen ( $M_{O}$ ) are $12.011\,\frac{g}{mol}$ and $15.999\,\frac{g}{mol}$ , then, the respective numbers of moles are: ( $r = 5.04$ , $m_{C} = 1.2\,g$ , $m_{O} = 3.2\,g$ )

Carbon

$n_{C} = \frac{r\cdot m_{C}}{M_{C}}$ (2)

$n_{C} = \frac{(5.04)\cdot (1.2\,g)}{12.011\,\frac{g}{mol} }$

$n_{C} = 0.504\,moles$

Oxygen

$n_{O} = \frac{r\cdot m_{O}}{M_{O}}$ (3)

$n_{O} = \frac{(5.04)\cdot (3.2\,g)}{15.999\,\frac{g}{mol} }$

$n_{O} = 1.008\,moles$

Hence, the empirical formula of the compound is $C_{0.504}HO_{1.008}$ .

3 0

2 years ago

Which of these is a significant limitation of using wind power for energy?

Yuliya22 [10]

The answer is D all of the above because I just got done with this question

7 0

3 years ago

How can you show the conservation of mass when making a physical mixture?

Yuki888 [10]

Answer:

A. Show that the total of the masses of the starting substances equals the mass of the mixture.

Explanation:

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

This law was given by French chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

For example:

In given photosynthesis reaction:

6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂

there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass.

In a similar way if we have mixture of sugar and sand the total weight of mixture is equal to the weight of reactants.

sand + sugar + water → mixture

10g+5g+20 g = 35 g

7 0

2 years ago

The kw for water at 0 °c is 0.12× 10–14 m2. calculate the ph of a neutral aqueous solution at 0 °c.

belka [17]

Remember that in water, the concentration of hydronium ions, or H⁺, will equal the concentration of hydroxide ions. That is [H⁺] = [OH⁻].

Remember that Kw = [H⁺][OH⁻] for water and if [H⁺] and [OH⁻] are both equal, we can easily solve for them by taking the square root of Kw.

[H⁺] = sqrt(0.12*10^-14) = 3.46*10^-8
(2 sig figs. Keep some extra so there will not be a rounding error.)

and remember that pH = -log[H⁺] = -log(3.46*10^-8) = 7.46

(The rules for sig figs are that if you take the log of a number with x significant figures, then the result should have x significant decimal places.)

The pH of water is 7.46

8 0

3 years ago

4.What kinds of cells are specialized cells that recognize a hormone's structure?

Pachacha [2.7K]

Red blood cells are the ones that deal with hormones.

3 0

3 years ago