Answer:
This is based on the masses of one element, that will be combined with a fixed mass of the other element.
Explanation:
This is based on the masses of one element, that will be combined with a fixed mass of the other element. Thoses masses are in a ratio.
This state we can find in 'The Law of Multiple Proportions, which is part of Dalton's atomic theory
We see that in the 2 compounds, the masses of oxygen, that combine with a fixed mass of carbon , will be in proportion.
For the first oxide we have 1g carbon per 1.33 g Carbon
1g /1.33g = 0.752
For the second oxide we have 1g carbon per 2.66g Carbon
1g/2.66g = 0.376
Dividing the mass O per g C of the second (larger value) compound:
2.66 / 1.33 = 2 which is the same as 0.752 / 0.376
thus, it means that the masses of oxygen that combine with carbon are in a 2:1 ratio.
Answer:
The new temperature will be 565.83 K.
Explanation:
Gay Lussac's law establishes the relationship between the temperature and the pressure of a gas when the volume is constant. This law says that the pressure of the gas is directly proportional to its temperature. This means that if the temperature increases, the pressure will increase; or if the temperature decreases, the pressure will decrease.
In other words, Gay-Lussac's law states that when a gas undergoes a constant volume transformation, the ratio of the pressure exerted by the gas temperature remains constant:
When an ideal gas goes from a state 1 to a state 2, it is true:
In this case:
- P1= 180 kPa
- T1= 291 K
- P2= 350 kPa
- T2= ?
Replacing:
Solving:
T2= 565.83 K
<u><em>The new temperature will be 565.83 K.</em></u>
Answer:
The weakest oxidizing agent is Zn^2+(aq)
The strongest reducing agent is Zn(s)
The strongest oxidizing agent is I2(s)
The weakest reducing agent is I^-(aq)
I^- cannot reduce Zn^2+ to Zn(s)
I2(s) can be reduced by hydrogen gas
Explanation:
In looking at oxidizing and reducing agents, our primary guide is the reduction potentials of each specie. The more negative the reduction potential of a specie, the better its function as a reducing agent. Zn has a very negative reduction potential hence it a very good reducing agent. Similarly, iodine has a very positive reduction potential hence it is a good oxidizing agent.
Only a specie having a more negative reduction potential than zinc can reduce it in aqueous solution. Similarly, the reaction potential of hydrogen is less than that of iodine hence hydrogen gas can reduce iodine.
The answer will be A & B not only because it makes sense but evaporation is taking water away not adding to (gaining)
Answer: Use c1(v1) = c2(v2) to solve<span> that </span>problem. 87%(200) = (35.5<span>%)v2 v2 ≈ 490.5. I hope this helps! Source(s)</span>