Smashing a cake the ingredients didn't change but it's appearance did
Answer:
1.2 x 10²⁴ atoms
Explanation:
Given:
Number of moles of Ag = 2moles
Unknown is the number of atoms it contains:
Solution:
A mole of any substance is known to be made up of 6.02 x 10²³ atoms
Now;
2 moles of an atom will contain:
2 x 6.02 x 10²³ = 1.2 x 10²⁴ atoms
Answer:
- Not balanced.
- Reactants: Zn and HCI
.
- Products: ZnCl₂ and H₂.
- Substitution reaction.
Explanation:
Hello,
In this case, for the given reaction:
Zn + HCI → ZnCl₂ + H₂
We can see that it is not balanced due to the fact that at the left side we have one hydrogen atom whereas at the right side two, taking into account the number must be same as well as chlorine. Thus, in order to balance we write:
Zn + 2HCI → ZnCl₂ + H₂
And that is enough. Moreover, we can see that the chemical species at the left side of the equation are the reactants and those at the right side the products, thus we have:
Reactants: Zn and HCI
.
Products: ZnCl₂ and H₂.
Finally, since we can see that the chlorine is at the reactants with hydrogen, but at the end with the zinc, and the initial zinc is alone as well as the yielded hydrogen we can infer this is a substitution reaction.
Best regards.
Answer:
"please please help me" LOL
Explanation:
