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3 years ago

4 unlike images produced by a convex spherical mirror, images produced by concave spherical mirrors

Chemistry

2 answers:

Aloiza [94]3 years ago

8 0

Answer: The correct answer is Option D.

Explanation: There are 2 types of spherical mirrors:

1. Convex mirror: These mirrors have shiny surface on the outer side of the curvature. The image formed by these mirrors are always virtual, upright and smaller in size.

2. Concave mirrors: These mirrors have shiny surface o the inner side of the curvature. The image formed by these mirrors can be real and inverted or virtual and upright depending on the placement of object. If the object is placed at the distance greater than the focal length, the image produced will be real and if it is placed at the distance smaller than the focal length, the image produced will be virtual.

Hence, the correct answer is Option D.

Brums [2.3K]3 years ago

7 0

The correct answer should be D. can be real or virtual depending on the object's placement

Depending on the position on the mirror, it can be determined whether the object is real or virtual.

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3 years ago

How many grams of Aspirin (acetylsalicylic acid) should we form in this reaction if we started with 2.08g of Salicyclic Acid?

Kamila [148]

Taking into account the reaction stoichiometry, 2.713 grams of aspirin are formed when 2.08 grams of salicyclic acid reacts.

<h3>Reaction stoichiometry</h3>

In first place, the balanced reaction is:

C₄H₆O₃ + C₇H₆O₃ (Salicyclic Acid) →C₉H₈O₄ (aspirin) + C₂H₄O₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

C₄H₆O₃: 1 mole
C₇H₆O₃: 1 mole
C₉H₈O₄: 1 mole
C₂H₄O₂: 1 mole

The molar mass of the compounds is:

C₄H₆O₃: 102 g/mole
C₇H₆O₃: 138 g/mole
C₉H₈O₄: 180 g/mole
C₂H₄O₂: 60 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

C₄H₆O₃: 1 mole ×102 g/mole= 102 grams
C₇H₆O₃: 1 mole ×138 g/mole= 138 grams
C₉H₈O₄: 1 mole ×180 g/mole= 180 grams
C₂H₄O₂: 1 mole ×60 g/mole= 60 grams

<h3>Mass of aspirin formed</h3>

The following rule of three can be applied: if by reaction stoichiometry 138 grams of salicyclic acid form 180 grams of aspirin, 2.08 grams of salicyclic acid form how much mass of aspirin?

$mass of aspirin=\frac{2.08 grams of salicyclic acidx 180 grams of aspirin}{138 grams of salicyclic acid}$

<u><em>mass of aspirin= 2.713 grams</em></u>

Then, 2.713 grams of aspirin are formed when 2.08 grams of salicyclic acid reacts.

Learn more about the reaction stoichiometry:

brainly.com/question/24741074

brainly.com/question/24653699

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2 years ago