The correct answer is fracture formation.
Fracture formation is not an indication of a chemical change.
Gas production, energy transfer are Precipitate information indications of a chemical change.
A chemical change is an irreversible process wherein there are rearrangements of the atoms in the molecules of a compound, resulting in the formation of a new compound with new chemical properties or composition.
A fracture is a fault line that divides rocks into two or more pieces. A fracture is a geological formation. Fracture is most often seen as crevice or deep fissures in rocks.
Answer:
1.67 mol S
General Formulas and Concepts:
<u>Chemistry - Atomic Structure</u>
- Reading a Periodic Table
- Using Dimensional Analysis
Explanation:
<u>Step 1: Define</u>
53.7 g S
<u>Step 2: Define Conversions</u>
Molar Mass of S - 32.07 g/mol
<u>Step 3: Convert</u>
<u /> = 1.67466 mol S
<u>Step 4: Check</u>
<em>We are given 3 sig figs. Follow sig fig rules and round.</em>
1.67466 mol S ≈ 1.67 mol S
Bottom line Your dissolution reaction<span> is endothermic, but because </span>dissolution reactions<span> lead to states of higher entropy, your particular </span>reaction is spontaneous<span> (it occurs) at your specific temperature nonetheless</span><span />
Answer:
Cl2 at 250 K < Cl2 at 300 K < H2S at 250 K < H2S at 300 K.
Explanation:
Answer:
Final number of moles = 0.675 mol
Mass = 2.7 g
Explanation:
Given data:
Initial volume of gas = 2.00 L
Final volume of gas = 2.70 L
Initial number of moles = 0.500 mol
Final number of moles = ?
Solution:
Formula:
V₁/n₁ = V₂/n₂
V₁ = Initial volume
n₁ = Initial number of moles
V₂ = Final volume of gas
n₂ = Final number of moles
Now we will put the values in formula.
2.00 L /0.500 mol = 2.70 L / n₂
n₂ = 2.70 L× 0.500 mol /2.00 L
n₂ = 1.35 L.mol / 2.00 L
n₂ = 0.675 mol
B)
Grams of helium added = ?
Solution:
Mass = number of moles × molar mass
Mass = 0.675 mol× 4 g/mol
Mass = 2.7 g