Answer:
4
General Formulas and Concepts:
<u>Chemistry</u>
- Identifying Moles/Atoms and Compounds
Explanation:
<u>Step 1: Define</u>
Al₂(SO₃)₃ - Aluminum Sulfide
2Al₂(SO₃)₃
<u>Step 2: Identify</u>
In Aluminum Sulfide, we have 2 Al's for every 3 SO₃²⁻'s.
So far, we have 2 Al's in total.
BUT, since we have a 2 coefficient in 2Al₂(SO₃)₃, we need to multiply by 2.
Therefore, we have 4 Al's in total.
Answer:
Explanation:
a. CuO+ 2HCl⇒CuCl2+ H2O
b. = = 0,05 (mol)
⇒= =0,05 mol
⇒= 0,05×135=6,75 (g)
c. =2× =0,1 (mol)
⇒= 0,1×36,5= 3,65 (g)
⇒= ×100=36,5 (g)
⇒ Nồng độ phần trăm dd sau phản ứng= Nồng độ % dd CuCl2=×100= ×100≈ 16,67%
According to Boyle's Law,
" the volume of a fixed mass of gas is inversely proportional to the pressure applied on it'.
Mathmatically,
V ∞ 1 / P
Or,
V = k / P
Explanation:
The balloon filled with Neon gas outside the chamber will have greater volume than in the chamber because the pressure in the chamber is high as compared to outside. So, the outside force brings the molecule of gas to get closer to each other.
Answer:
A: Entropy tends to increase in a system