Which element is most abundant in Earth's crust? A) Silicon B) Oxygen C) Aluminum D) Iron

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Asked 6/30/2025 12:33:06 PM

Updated 6/30/2025 1:01:14 PM

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User: Which element is most abundant in Earth's crust? A) Silicon B) Oxygen C) Aluminum D) Iron

Weegy: Oxygen is the most abundant element in the Earth's crust.

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User: What is the oxidation state of oxygen in most compounds? A) -2 B) +2 C) 0 D) +4

Weegy: The oxidation state of sulfur in H SO is +6.

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Asked 6/30/2025 12:33:06 PM

Updated 6/30/2025 1:01:14 PM

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2. Which of the following elements is a noble gas? A) Nitrogen B) Oxygen C) Helium D) Hydrogen

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Updated 6/30/2025 1:04:43 PM

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MsAnnabel

Helium is a noble gas.

Added 6/30/2025 1:04:43 PM

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9. In which phase are atoms most tightly packed? A) Solid B) Liquid C) Gas D) Plasma

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Updated 6/30/2025 12:53:14 PM

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mofrey

Atoms are most tightly packed in the solid phase.

Added 6/30/2025 12:53:00 PM

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Confirmed by oldwallet [6/30/2025 12:53:28 PM]

MsAnnabel

Atoms are most tightly packed in the solid phase.

Added 6/30/2025 12:53:14 PM

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. What is the molar mass of water (H O)? A) 16 g/mol B) 18 g/mol C) 20 g/mol D) 12 g/mol

Weegy: For water (H2O), you have 2 hydrogen atoms and 1 oxygen atom: Molar mass of H2O = 2(1 g/mol) + 1(16 g/mol) Molar mass of H2O = 2 g/mol + 16 g/mol Molar mass of H2O = 18 g/mol Therefore, the correct answer is: 18 g/mol. User: Which law states that the volume of a gas is directly proportional to its temperature at constant pressure? A) Boyle's Law B) Charles's Law C) Avogadro's Law D) Dalton's Law Weegy: Boyle's Law states that volume is inversely proportional to pressure at constant temperature. User: What type of reaction is represented by: 2 H + O 2 H O? A) Combustion B) Synthesis C) Decomposition D) Single displacement (More)

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Updated 6/30/2025 1:02:25 PM

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mofrey

This reaction is a synthesis reaction because hydrogen reacts with oxygen to form water.

Added 6/30/2025 1:02:25 PM

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Confirmed by oldwallet [6/30/2025 1:02:54 PM]

What is the molecular shape of methane (CH )? A) Tetrahedral B) Trigonal planar C) Linear D) Bent

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Updated 6/30/2025 12:57:21 PM

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matahari

Tetrahedral is the molecular shape of methane (CH4).

Added 6/30/2025 12:57:21 PM

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Which type of bond involves the sharing of electron pairs? A) Ionic B) Covalent C) Metallic D) Hydrogen

Weegy: Covalent bonds involve sharing electron pairs. User: What is the pH of a neutral solution at 25°C? A) 0 B) 7 C) 14 D) 1 Weegy: The pH of a neutral solution at 25 C is 7. User: 6. Which element has the highest electronegativity? A) Fluorine B) Oxygen C) Chlorine D) Nitrogen Weegy: Fluorine has the highest electronegativity. User: What is the main component of natural gas? A) Ethane B) Propane C) Methane D) Butane Weegy: Methane is the main component of natural gas. User: Which of the following is an example of a metalloid? A) Aluminum B) Silicon C) Iron D) Calcium (More)

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Updated 6/30/2025 1:08:16 PM

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MsAnnabel

Silicon is an example of a metalloid.

Added 6/30/2025 1:03:50 PM

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