CHEMISTRY HIGH SCHOOL

Which of the following molecules has polar bonds but is a nonpolar molecule?a. H₂
b. H₂O
c. NH₃
d. NaCl
e. CO₂


Can anyone explain this one?

Answers

Answer 1
Answer: H2: non polar bond. non polar molecule
H2O: polar bonds, but there is a angle between 2 H-O bonds. so it's a polar molecule
NH3: polar bonds, but it's a stereochemical structure, like a pyramid with triangle base, N is the vertex. polar molecule.
NaCl: polar bond, polar molecule.(ion bond)
CO2: 2 O atoms are at two sides of C atom horizonally. giving CO2 a symmerical structure. it's nonpolar molecule with 2 polar bonds.
Answer 2
Answer:

Final answer:

Carbon dioxide (CO₂) is a molecule with polar bonds but is considered nonpolar due to its linear shape.

Explanation:

In order to determine whether a molecule is polar or nonpolar, we must consider both the polarity of the individual bonds and the molecular geometry. A molecule with polar bonds can be nonpolar if the bond polarities cancel each other out due to the overall molecular shape.

Out of the given options, the molecule that has polar bonds but is nonpolar is CO₂. Carbon dioxide has two polar bonds between carbon and oxygen, but the molecule has a linear shape, which results in the bond polarities canceling each other out, making the molecule nonpolar.

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What two types of compounds is water especially good at dissolving?

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Answer:

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A(n) ____________ is a substance in which all the exact combinations of elements are always the same.a.synthetic element
b.compound
c.mixtures
d.solution

Answers

A compound is a substance in which all the exact combinations of elements are always the same. The correct option is b.

What is a compound?

Compounds are substances that are made up of two or more substances or elements. A compound is a mixture of two elements, they share bonds with each other, and they form a totally different substance than the above elements.

For example, NaCl is a compound. It is formed by two elements, sodium, and chloride.  These elements form a different compound that is common table salt.

Some compounds are pure substances because they are made up of only elements that mix together. They do not contain any impurity or any other substance. They share chemical bonds with each other.

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b. compound
source is Glencoe Science book grade 7.
Also I just happening to be learning about this at school

Most commercial sports drinks area. calcium-rich.
b. good recovery sources.
c. sodium-poor.
d. highly concentrated

Answers

C. sodium poor is the answer

C. Sodium Poor - I took the test and got it correct

Which method is appropriate for separating a mixture of iron and aluminum? A. using a magnet B. distillation C. evaporation D. observing different densitie

Answers

Appropriate method for separating a mixture of iron and aluminum is definitely A. using a magnet. If we use the second method we will vaporize either aluminum or iron.
If we used the third method it  would  change liquid into a gas which is strange according to the task.
And observing (even for a long time) won't help separating. 

According to the law of conservation of energy, A) an object loses most of its energy as friction. B) the total amount of energy for a system stays the same. C) the potential energy of an object is always greater than its kinetic energy. D) the kinetic energy of an object is always greater than its potential energy.

Answers

I did research and got B

Answer:

B.

Explanation:

Plz I need help is the 2nd time I post this

Answers

Answer:

2--->C

6---->E

3---->D

4--->A

5--->B

1---->F

Explanation:

I think so, sorry if its wrong.

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