From another answer, it is most likely E. Horizon. Hope this helps!
Answer:
150.000 g
Explanation:
The law of conservation of mass states that the mass of reactants and products of a reaction must be equal to one another.
In other words, for this case:
- Mass of KOH + Mass of HCl = Mass of Products
We are given all required data to<u> calculate the mass of the KOH solution</u>:
- Mass of KOH + 250.000 g = 400.000 g
Hello!
The statement that can explain the result is <span>The bubbles indicate that a gas is created and mass is lost as it escapes from the container.
The reaction between Hydrochloric Acid and a Zinc Strip is the following one:
2HCl (aq) + Zn (s)</span>→<span> ZnCl</span>₂<span>(aq) + H</span>₂(g)
<span>
The bubbles that the student sees are caused by the Hydrogen gas that is being formed in the reaction. If the container isn't hermetically sealed, the gas will escape the solution and the final mass will be lower than the original. However, if the container is sealed, measuring the final mass will prove the Law of Conservation of Mass.
Have a nice day!</span>
A mole is equal to 6.02x10^23, so one mole of H2O has 6.02x10^23 water molecules. To get how many of them are in 6 moles you need to multiple it by six:
(6.02x10^23)x6= 3.612x10^24
So, there’s 3.612x10^24 water molecules in 6 moles of water
Answer:
The activation energy for this reaction = 23 kJ/mol.
Explanation:
Using the expression,
Where,
is the activation energy
R is Gas constant having value = 8.314×10⁻³ kJ / K mol
The conversion of T( °C) to T(K) is shown below:
T(K) = T( °C) + 273.15
So,
T = (280 + 273.15) K = 553.15 K
The conversion of T( °C) to T(K) is shown below:
T(K) = T( °C) + 273.15
So,
T = (376 + 273.15) K = 649.15 K
So,
<u>The activation energy for this reaction = 23 kJ/mol.</u>