CHEMISTRY HIGH SCHOOL

A molecule has two atoms that are bonded to the central atom and one lone pair of electrons around this central atom. What is the shape of the molecule?bent
linear
trigonal planar
trigonal pyramidal

Answers

Answer 1
Answer: Bent, the lone pair on the central atom push away the other atoms and the most stable configuration of the lone pair and two atoms is trogonal planar. But since you cannot see the lone pair, the shape of the three atoms is bent.
Answer 2
Answer:

Answer:

bent

Explanation:

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If a hypothesis is tested repeatedly and is not proven false it may next become a - A) Law
B) Rule
C) Theory
D) Higher

Answers

Theory. It might be disproved in the future, so it can not be a law until it solid as a rock. Brainliest the answer and I will explain more.

Based on your own understanding and information in this lesson, what characteristics of the Confederate States of America made it a confederal government when compared to the government of the United States?

Answers

The main characteristic of the Confederate States of America that made it a confederal government when compared to the government of the United States was that its central power was much weaker. 

Answer:

Exact answer (reword it yourself)

Explanation:

The Confederate States of America had a weaker central government than the United States, and individual states had more sovereignty and power that US states. The central government of the Confederate States handled only foreign issues or national economic issues.

In which block of the periodic table is uranium (U) found?

Answers

Uranium is in the "f" block, because it's external electron configuration is 5d^4

Final answer:

Uranium (U) is found in the f-block of the periodic table, specifically in the actinide series.

Explanation:

Uranium (U) is found in the actinide series, which is located in the f-block of the periodic table. The actinide series consists of elements with atomic numbers from 89 to 103. Uranium is the 92nd element, making it part of this series. The f-block is located below the main body of the periodic table, between groups 3 and 4.

Learn more about Uranium location in periodic table here:

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Is carbohydrate a element or compound

Answers

compound. An element is just composed of itself. A carbohydrate is a complex compound made with carbpn and lots of other elements

Compared to pure water, an aqueous solution of calcium chloride has a(1) higher boiling point and higher freezing point
(2) higher boiling point and lower freezing point
(3) lower boiling point and higher freezing point
(4) lower boiling point and lower freezing point

Answers

Answer: option (2) higher boiling point and lower freezing point.


Explanation:


Colligative properties are those properties of solution that depend on the concentraion of the solute.


Increase of boling point and depression of freezing point are two of those colligative properties.


Regarding the boiling point, as some impurities (in this case the solute calcium chloride) are present in the solvent (water) ,at the same temperature, less molecules of water will reach the surface to escape, at a given temperature. Hence, you have to increase the temperature to manage that the number of molecules and their speed increase and so all the molecules can escape fro, the liquid phase to form the gas. So, the boiling point of the water with the salt in it will be higher than the boiling point of pure water.


As for the freezing point, in a solution the particles of solute interfere with the attractive forces between the molecules of water avoiding that the solvent passes to solid state at the normal freezing point. Hence, the temperature to freeze will be lower.

Which electron dot diagram best represents a compound that contains both ionic and covalent bonds?

Answers