Where are the answers that apply .. hopes this help :)
The Condrichthyes shark live in the Cenozoic era they survived 5 major mass extinction including the Permian one that wiped out most of the life on earth.
Answer:
Synthesis
General Formulas and Concepts:
<u>Chemistry - Reactions</u>
- Synthesis Reactions: A + B → AB
- Decomposition Reactions: AB → A + B
- Single-Replacement Reactions: A + BC → AB + C
- Double-Replacement Reactions: AB + CD → AD + BC
Explanation:
<u>Step 1: Define RxN</u>
RxN: NH₃ + H₂SO₄ → (NH₄)₂SO₄
<u>Step 2: Identify</u>
Combining 2 compounds to form 1.
NH₃ + H₂SO₄ → (NH₄)₂SO₄
A + B → AB
<em>It is a Synthesis Reaction.</em>
Answer:
neon is a gas.it has full of sub shell.but iron hasnt full of sub shell so iron is react with other elements
Answer:
The volume of the concentrated nitric acid taken: <u>V₁ = 4.3 mL</u>
Explanation:
Given: Final pH of nitric acid (HNO₃) solution= 1.30
Volume of HNO₃ solution: V₂ = 600.0 mL
Concentration of stock HNO₃ solution: M₁ = 7.0 M
Volume of the stock HNO₃ solution: V₁ = ?
To find out <u>the concentration of HNO₃ solution (M₂),</u> we use the following equation: pH = - ㏒ [H⁺]
⇒ 1.3 = - ㏒ [H⁺]
⇒ ㏒ [H⁺] = - 1.3
⇒ [H⁺] = antilog (- 1.3)
⇒ [H⁺] = antilog (- 1.3) = 0.050 M = M₂
Now, to calculate<u> the volume of concentrated 7.0 M HNO₃ (V₁)</u> that should be added to prepare 600.0 mL of 0.050 M HNO₃ solution, we use the dilution equation: M₁ × V₁ = M₂ × V₂
⇒ V₁ = M₂ × V₂ ÷ M₁
⇒ V₁ = (0.050 M) × (600.0 mL) ÷ (7.0 M)
⇒ <u>V₁ = 4.3 mL (rounded to two significant digits)</u>
<u>Therefore, the volume of the concentrated nitric acid taken: V₁ = 4.3 mL</u>