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navik [9.2K]
2 years ago
11

Please answer my questions. I really need them soon. I will post the links for other questions in the comments.

Chemistry
1 answer:
Assoli18 [71]2 years ago
6 0

Explanation:

option option B is the correct answer of given statement helium-4(He)=2

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What is the total number of atoms in the molecule
serg [7]

Answer:

Sulfuric acid contains 2 hydrogen atoms, 1 sulfur atom, and 4 oxygen atoms.

Explanation:

8 0
3 years ago
Write a net ionic equation to show that benzoic acid, C6H5COOH, behaves as a Brønsted-Lowry acid in water.
Nitella [24]

Answer:

H⁺(aq) + H₂O(l) ⇄ H₃O⁺(aq)

Explanation:

According to Brönsted-Lowry acid-base theory, an acid is a substance that donates H⁺. Let's consider the molecular equation showing that benzoic acid is a Brönsted-Lowry acid.

C₆H₅COOH(aq) + H₂O(l) ⇄ C₆H₅COO⁻(aq) + H₃O⁺(aq)

The complete ionic equation includes all the ions and molecular species.

C₆H₅COO⁻(aq) + H⁺(aq) + H₂O(l) ⇄ C₆H₅COO⁻(aq) + H₃O⁺(aq)

The net ionic equation includes only the ions that participate in the reaction and the molecular species.

H⁺(aq) + H₂O(l) ⇄ H₃O⁺(aq)

5 0
3 years ago
2 HCI → H2 + Cl2<br> Endothermic or exothermic
Oksana_A [137]

Answer:

Exothermic

Explanation:

I think it is exothermic because heat is being released

6 0
3 years ago
A gas has a pressure of 167.1 kPa. What is this pressure in atm?
Aleksandr-060686 [28]

Answer:

167100atm

Explanation:

167.1*1000=167100 atm

3 0
3 years ago
What is one reason scientists have developed a system to classify organisms?
Travka [436]

Answer:

c

Explanation:

6 0
3 years ago
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