Discuss the shapes of Nh3 and H2O on the basis of VESPER theory?

Answers

Answer 1

Answer:

Answer:

Ammonia has 4 regions of electron density around the central nitrogen atom (3 bonds and one lone pair). These are arranged in a tetrahedral shape. The resulting molecular shape is trigonal pyramidal with H-N-H angles of 106.7°.

Explanation:

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What are geometric isomers?

Answers

each of two or more compounds that differ from each other in the arrangement of groups with respect to a double bond, ring, or other rigid structure.

"Contagion" Movie questions!I have a few questions about the movie.

1. What type of pathogenic agent was the disease and what was the name of it?
2. Dr. Ellis Cheever (played by Lawrence Fishburne) explains that the spread of the disease is dependent on factors such as "nutrition, underlying conditions, socioeconomic factors and access to clean drinking water." Explain the validity of this statement.
3. Explain the irony of the following statement made by Dr. Cheever
" Shaking hands was a way of showing someone you werent carrying a weapon in the old days"

Answers

1. The pathogenic disease in "Contagion" was called Nipah. It was a combination of a flue and a virus, which caused respiratory disease and inflammation of the brain.

2. Cheever's statement is valid because flus/viruses can spread/caught by not taking care of your body (aka poor nutrition), and people who are in a lower socioeconomic class may not have the resources to prevent or fight off these sicknesses with proper vaccinations and medicine.

3. Cheever's statement is ironic because in the movie, shaking hands became a way of spreading Nipah. He's referring to biological warfare.

Final answer:

The movie 'Contagion' features a virus called MEV-1 that spreads based on factors like nutrition, underlying conditions, socioeconomic factors, and clean drinking water. Dr. Cheever's statement about these factors' influence on disease spread is valid, and the irony lies in the fact that shaking hands, once a symbol of trust, can actually spread diseases.

Explanation:

1. The pathogenic agent in the movie 'Contagion' was a virus called MEV-1.

2. Dr. Ellis Cheever's statement about the spread of the disease is valid. Nutrition, underlying conditions, socioeconomic factors, and access to clean drinking water can all affect a person's immune system and ability to fight off infections.

3. The irony in Dr. Cheever's statement is that shaking hands, which was once seen as a sign of trust and nonviolence, can actually spread diseases like the one depicted in the movie.

Learn more about Pathogenic agent here:

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which of the molecules listed below directly donates a nitrogen atom for the formation of urea during the urea cycle?

Answers

Aspartate directly donates a nitrogen atom from the formation of urea during the urea cycle.
The argininosuccinate synthase reeaction links aspartate and citrulline via the amino group of aspartate and provides the second nitrogen of urea.

Which of the following is NOT a major characteristic used to identify minerals? a. hardness c. density b. magnetism d. luster

Answers

Magnetism is a force which attract or repel a magnetic object like iron.
Magnetism is not a major characteristic used to identify minerals, because, every mineral do not have magnetic properties in it. Only few minerals like Iron-nickel have it and thus, it is not possible to identify a mineral using magnetism.

The answer would be B.)Magnetism

Starting with 100 grams of uranium-238, after one half life has gone by, how many grams of uranium-238 will remain?A._12.5 grams
B._25 grams
C._50 grams
D._100 grams

Answers

Answer : The correct option is, (C) 50 grams

Solution :

Formula used :

$a=(a_o)/(2^n)$

where,

a = amount of reactant left after n-half lives = ?

$a_o$ = Initial amount of the reactant = 100 g

n = number of half lives = 1

Putting values in above equation, we get:

$a=(100)/(2^1)$

$a=50g$

Therefore, the amount of uranium-238 remain will be, 50 g

Answer C, 50 grams.
This is because a half life is the time it takes for a sample of an unstable isotope to spontaneously so that half of the original sample remains

5. What is the density of an 84.7 g sample of an unknown substance if the sample occupies 49.6 cm3?