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3 years ago

Based on the passage , where in the United States would a physician encounter the most cases of SAD ?

Chemistry

1 answer:

Montano1993 [528]3 years ago

7 0

Answer/Explanation:

We cannot see the passage, but SAD stands for Seasonal Affective Disorder. SAD is a type of depressive disorder related to lack of light, and therefore changes with the seasons. It is a severe version of the "winter blues"

In the winter months, where the days are shorter, individuals who suffer from SAD suffer from mood changes. They get depressed, have a reduction in energy levels, and withdraw socially. They may also gain weight. This causes problems with relationships, work, and school.

Since SAD is linked to light, SAD is likely more common in the Northern areas of the United States, where winter days are shorter.

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Identify each substance as an acid or a base and write a chemical equation showing how it is an acid or a base according to the

faust18 [17]

Answer:

(a) Acid

(b) Base

(d) Base

Explanation:

According to the Arrhenius acid-base theory:

An acid is a substance that releases H⁺ in aqueous solution.

A base is a substance that releases OH⁻ in aqueous solution.

(a) H₂SO₄ is an acid according to the following equation:

H₂SO₄(aq) ⇒ 2 H⁺(aq) + SO₄²⁻(aq)

(b) Sr(OH)₂ is a base according to the following equation:

Sr(OH)₂(aq) ⇄ Sr²⁺(aq) + 2 OH⁻(aq)

(c) HBr is an acid according to the following equation:

HBr(aq) ⇒ H⁺(aq) + Br⁻(aq)

(d) NaOH is a base according to the following equation:

NaOH(aq) ⇒ Na⁺(aq) + OH⁻(aq)

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3 years ago

Given a molecular formula, how would you calculate the molecular weight of a compound

Dominik [7]

Https://www.youtube.com/watch?v=J_MtVs0aBdU

Watch this and it will help you

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3 years ago

Which of the following is true of enzymes? Enzymes may require a nonprotein cofactor or ion for catalysis to take speed up more

Sergio [31]

Answer:

Enzymes may require a nonprotein cofactor or ion for catalysis to take speed up more appreciably than if the enzymes act alone;

Enzymes increase the rate of chemical reaction by lowering activation energy barriers.

Explanation:

Some enzymes need a cofactor to act, it is attached to the enzyme and can be nonprotein such as a metal ion. The enzyme function depends on the physical properties of the environmental, especially temperature and pH, each enzyme has a great point of pH and temperature where it has a maximum activity.

If the three-dimensional function of an enzyme is altered, it loses it specified and may not catalyze the reaction, because the structure of the enzyme is responsable for its specified. The catalyst occurs because the enzyme lows the activation energy barriers and this increases the rate of the reaction.

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3 years ago

What are the units of molar mass? O A. Lig O B. g/mol O c. g/L O D. mol/g

Lorico [155]

The units of molar mass is g/mol that is the letter B.

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3 years ago

Read 2 more answers

How do metalloids affect modern technology?

Lady bird [3.3K]

examples of metalloids :
Boron,Silicon ,Germanium are some metalloids ...
what they do:
they are used to form the semiconductors and these semiconductors are used in modern computer technology like in circuits ,chips and computer based gadgets... :)

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3 years ago