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Chemical formula

Example: Balanced Chemical Equations with Subscripts Water: $$\ce{H2O}$$ Carbon dioxide: $$\ce{CO2}$$ Iron(III) hydroxide (Rust reaction): $$\ce{4Fe + 3O2 + 6H2O -> 4Fe(OH)3}$$ Copper(II) sulfate pentahydrate: $$\ce{CuSO4 * 5H2O}$$ Chemical Formulas in Chemistry Chemical formulas are the symbolic representations of chemical substances. They show the elements present in a compound and the ratio in which the atoms of these elements combine. Chemical formulas are essential for understanding the composition, structure, and behavior of compounds in chemical reactions. 1. What is a Chemical Formula? A chemical formula uses symbols of elements and numerical subscripts to represent the composition of a substance. For example, the formula for water is: $$ \ce{H2O} $$ This indicates that each water molecule is made up of 2 atoms of hydrogen and 1 atom of oxygen. 2. Types of Chemical Formulas Empirical Formula Molecular Formula Structural Formula...

Hard English word Of Lord Of Ring

1. Which Word is similar to host?

  (a) party-giver
  (b) passenger

Answer : (a) 

 What's the definition of host?
a person who receives or entertains other people as guests.
For example: "a dinner-party host"
How is party-giver similar?
The word party-giver means a person hosting a party.
For example: "she became an enthusiastic party-giver"
How is passenger different?
The word passenger means a traveler on a public or private conveyance other than the driver, pilot, or crew.

2. Which Word is opposite of wet?

(a) dry
(b) dirty

Answer : (a) 

                      Learn why
What's the definition of wet?
covered or saturated with water or another liquid.
For example: "she followed, slipping on the wet rock"
How is dry different?
The word dry means free from moisture or liquid; not wet or moist.
For example: "the jacket kept me warm and dry"
What's the definition of dirty?
covered or marked with an unclean substance.
For example: "a tray of dirty cups and saucers"

 3. Which  Word is similar to payment?

(a) remittance
(b) reference

Answer : (a) 

                   Learn why
What's the definition of payment?
the action or process of paying someone or something, or of being paid.
For example: "ask for a discount for payment by cash"
How is remittance similar?
The word remittance means a sum of money sent, especially by mail, in payment for goods or services or as a gift.
How is reference different?
The word reference means the action of mentioning or alluding to something.
For example: "he made reference to the enormous power of the mass media"

4. Which Word is similar to cloak?

(a) cape
(b) cache

Answer : (a) 

Learn why
What's the definition of cloak?
an outdoor overgarment, typically sleeveless, that hangs loosely from the shoulders.
                                   
How is cape similar?
The word cape means a sleeveless cloak, typically a short one.
How is cache different?
The word cache means a collection of items of the same type stored in a hidden or inaccessible place.
For example: "an arms cache" 


5. Which Word is similar to quiver ? 
(a) tremble
(b) treasure

Answer: (a) 

               Learn why

What's the definition of quiver?

tremble or shake with a slight rapid motion.

For example: "the tree's branches stopped quivering"

How is tremble similar?

The word tremble means shake involuntarily, typically as a result of anxiety, excitement, or frailty.

For example: "Isobel was trembling with excitement"

How is treasure different?

The word treasure means keep carefully (a valuable or valued item).

6 Which Word is similar to expanse?

(a) area
(b) aroma

Answer: (a) 

              Learn why

What's the definition of expanse?

an area of something, typically land or sea, presenting a wide continuous surface.

For example: "the green expanse of the forest"

How is area similar?

The word area means a region or part of a town, a country, or the world.

For example: "rural areas of New Jersey"

How is aroma different?

The word aroma means a distinctive, typically pleasant smell.

For example: "the tantalizing aroma of fresh coffee"

7. Which Word is similar to spiritual?

(a) nonmaterial
(b) industrial

Answer: (a) 


                     Learn why

What's the definition of spiritual?

relating to or affecting the human spirit or soul as opposed to material or physical things.

For example: "I'm responsible for his spiritual welfare"

How is nonmaterial similar?

The word nonmaterial means not consisting of physical objects.

For example: "there are many nonmaterial goods exchanged on the market"

How is industrial different?

The word industrial means relating to or characterized by industry.

For example: "a small industrial town"

8. Which  Word is  similar to terrible?

(a) dreadful
(b) careful

Answer: (a) 
    
      
           

                        Learn why

What's the definition of terrible?

extremely or distressingly bad or serious.

For example: "a terrible crime"

How is dreadful similar?

The word dreadful means causing or involving great suffering, fear, or unhappiness; extremely bad or serious.

For example: "there's been a dreadful accident"
How is careful different?

The word careful means making sure of avoiding potential danger, mishap, or harm; cautious.

For example: "I begged him to be more careful"

9.Which  Word is opposite of aloft?

(a) down
(b) doubtless

Answer : (a) 

         

                     Learn why
What's the definition of aloft?

up in or into the air; overhead.

For example: "the congregation sways, hands aloft"

How is down different?

The word down means toward or in a lower place or position, especially to or on the ground or another surface.

For example: "she looked down"

What's the definition of doubtless?

used to indicate the speaker's belief that a statement is certain to be true given what is known about the situation.

For example: "the company would doubtless find the reduced competition to their liking"

10. Which Word is opposite of tremendous?

 (a) tiny
 (b) ugly

Answer : (a) 

          

                     Learn why

What's the definition of tremendous?

very great in amount, scale, or intensity.

For example: "Penny put in a tremendous amount of time"

How is tiny different?

The word tiny means very small.

For example: "a tiny hummingbird"

What's the definition of ugly?

unpleasant or repulsive, especially in appearance.
For example: "she thought she was ugly and fat"

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