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Debora [2.8K]
3 years ago
5

which one of the following is an endothermic process?1.ice melting 2.water freezing 3.a boiling soup 4.the reaction of HCl and N

AOH,temperature increases
Chemistry
1 answer:
Llana [10]3 years ago
8 0
<span>From the above given choices :
 melting is an endothermic process</span>
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What is a result of the unequal electron sharing in a water molecule?
Katarina [22]

Answer:

The right choice is  c. Water molecules have a weakly positive hydrogen end.

Explanation:

The unequal sharing of electrons in water molecule gives a slight negative charge near its oxygen atom ( see image below) and a slight positive charge near its hydrogen atoms. A neutral molecule that has a partial positive charge at one end and a partial negative charge at the other, it is a polar molecule.

so

a. Water molecules have a nonpolar bond.

It is wrong choice because water has polar bond .

b. Water molecules have a weakly positive oxygen end.  

Also, a wrong choice due to water molecule gives a slight negative charge near its oxygen atom.

c. Water molecules have a weakly positive hydrogen end.  

This is the right choice.

d. Water molecules have two oxygen and two hydrogen atoms

It is wrong choice because water has one oxygen and two hydrogen atoms

<u>So, the right choice is</u>

c. Water molecules have a weakly positive hydrogen end.  

4 0
3 years ago
Determine the electron-group arrangement, molecular shape, and ideal bond angle(s) for each of the following:
Alja [10]

The electron-group arrangement of CO₃²⁻ is trigonal planar. The molecular shape is trigonal planar, and the ideal bond angle(s) is CO₃²⁻ is 120°

<h3>What is the molecular geometry of a compound?</h3>

The position of the compound's electrons and nuclei can be seen in the molecular geometry. It demonstrates how the form of the complex is created by the interaction of electrons and nuclei.

Here, according to the VSEPR  theory, the shape of the carbonate ion is trigonal planar. The carbon will be in the center.

Thus, the electron-group arrangement and the shape of the carbonate ion are trigonal planar. The bond angle will be 120°.

To learn more about molecular geometry, refer to the link:

brainly.com/question/16178099

#SPJ4

6 0
1 year ago
A scientist made careful measurements of the pressure and temperature of many different gases. Based on these measurements, he c
alex41 [277]

Answer:

c. law

Explanation:

Law -

It is type of statement , which helps to explain certain observations , in the form of mathematical relationship or verbal statements , is referred as a law .

Law is a widely accepted information , which can get altered by some new inventions or exception.

A law is stated in words as well as in the form of some mathematical relationships or equations.

Hence , from the given information of the question,

The correct option is c. law .

4 0
3 years ago
What is the definition of specific heat? O A. The heat required to break the molecular bonds within a substance B. The total amo
snow_tiger [21]

Answer:

C

Explanation:

C .       specific heat =    J / gm-C

               

7 0
2 years ago
Saturated fats are typically liquid at room temperature. saturated fats are typically liquid at room temperature.
dmitriy555 [2]
False, saturated fats like butter or coconut oil are typically solid at room temperature.
7 0
3 years ago
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