12 Oxygen, 2 Aluminum, and 1 Sulfur. let me know if you need anything else.
Answer:
1.445 x 10²³ atoms.
Explanation:
- It is known that 1.0 mole of any element contains Avogadro's no. (6.022 x 10²³) of atoms.
<u><em>Using cross multiplication:</em></u>
1 mol of Ag contains → 6.022 x 10²³ atoms.
∴ 0.24 mol of Ag contains → <em>??? atoms.</em>
∴ The no. of Ag atoms in 0.24 mol = (0.24 mol)(6.022 x 10²³ atoms)/(1 mol) = 1.445 x 10²³ atoms.
Answer:
Both fission and fusion are nuclear reactions that produce energy, but the applications are not the same. Fission is the splitting of a heavy, unstable nucleus into two lighter nuclei, and fusion is the process where two light nuclei combine together releasing vast amounts of energy.
Explanation:
Answer:
41.4 s
Explanation:
Given data
- Rate constant (k): 8.42 × 10⁻² s⁻¹ at 800 °C
- Initial concentration of A ([A]₀): 5.00 M
- Concentration of A at a time t ([A]): 0.153 M
Let's consider the following reaction of first order with respect to A.
2 A ⇒ B
We can find the time that it will take for A to decrease from 5.00 M to 0.153 M using the following expression.
![ln([A]/[A]_0)=-k.t\\ln(0.153M/5.00M)=-8.42 \times 10^{-2}s^{-1} .t\\t = 41.4 s](https://tex.z-dn.net/?f=ln%28%5BA%5D%2F%5BA%5D_0%29%3D-k.t%5C%5Cln%280.153M%2F5.00M%29%3D-8.42%20%5Ctimes%2010%5E%7B-2%7Ds%5E%7B-1%7D%20%20%20.t%5C%5Ct%20%3D%2041.4%20s)
Answer:
The coefficients of a balanced chemical equation tell us the relative number of moles of reactants and products. All stoichiometric calculations begin with a balanced equation. Balanced equations are necessary because mass is conserved in every reaction. ... This is the reactant that is completely used in the reaction.
Explanation:
