Easy Question! Chemistry - Please help! I give thanks - It's the picture - Question 4

Answers

Answer 1

Answer: The key to answering this question is to realize that you have two polyhedrons combined to form one thus the overall volume would be equal to the sum of the two polyhedron.

Total volume= (volume of prism) + (volume of cuboid)

a) Volume of cuboid ( $V_(1)$ )= $l * w * h$
l   = 13ft
w = 18ft
h = 21ft
: . $V_(1)$ = 13ft * 18 ft * 21ft
= 4914 $ft ^(3)$

b) Volume of Prism ( $V_(2)$ ) =   $(1)/(2) * b * h * H$
b = 18ft
h = 16ft
  H = 13ft
: . $V_(2)$ = $(1)/(2) * 18ft * 16ft * 13ft$
= 1872 $ft^(3)$

Thus Overall Volume = 6786 $ft^(3)$

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Marfan syndrome is a genetic disorder caused by a dominant allele.describe how marfan syndrome is inherited

Answers

Marfan syndrome is a genetic disorder caused by a dominant allele. It is inherited in an autosamal dominant pattern which means that one copy of the mutated gene from at least one parent is enough to give the disorder to that person. If it is recessive, both parents must have it for their offspring to get it.

At what temperature will a solid melt?O
A. The temperature at which intermolecular forces push the
molecules apart
O
B. The temperatud at which the kinetic energy breaks the
intermolecular attractions
O
c. The temperature at which the pressure forces molecular motion to
stop
D. The temperature at which the atomic bonds within the molecules
are broken

Answers

Answer:

A solid will melt at the temperature at which the kinetic energy breaks theinter-molecular attractions.

Explanation:

The melting point is the state at which "a substance changes its temperature from a solid to liquid". At the melting point temperature, there is an equilibrium between the both the solid and the liquid phase. When the solid particle is heated by increasing the temperature the particle in the solid vibrate quickly and it absorbs kinetic energy.

It leads to the breaking of the organisation of particle in between the solid and that leads to the melting of solid. Thus, at the melting point, the kinetic energy breaks the inter-molecular attractions.

Answer: B) the temperature at which the kinetic energy breaks the intermolecular attraction

Define and explain bond energy.

Answers

Bond Energy - measure of the amount of energy needed to break apart one molecule of covalently bonded gases.

bond energy is known as the amount of energy needed to break a molecule into its atoms. .

Name two ways the archaea differ from bacteria

Answers

apart from their habits , bacteria and archea differ in cell wall structure and membrane lipid composition . A ll bacteria have peptidoglycans in the cells wall where as the archea do not . both also are different in the RNA polymerases and thus in their protein synthesis .I hope that can help you !!:))

When an excited electron in an atom moves to the ground state, the electron(1) absorbs energy as it moves to a higher energy state

(2) absorbs energy as it moves to a lower energy state

(3) emits energy as it moves to a higher energy :state

(4) emits energy as it moves to a lower energy state

Answers

Answer is: (4) emits energy as it moves to a lower energy state.

Atom emits a characteristic set of discrete wavelengths, according to its electronic energy levels.

Emission spectrum of a chemical element is the spectrum of frequencies emitted due to an atom making a transition from a high energy state to a lower energy state.

Each transition has a specific energy difference.

Each element's emission spectrum is unique.

When an excited electron in an atom moves to the ground state, the electron $\boxed{\left( {\text{4}} \right){\text{ emits energy as it moves to a lower energy state}}}$ .

Further Explanation:

Electronic transition:

It is a process that occurs when an electron undergoes emission or absorption from one energy level to another energy level.

When an electron undergoes a transition from a lower energy level to a higher energy level then it requires energy to complete the process. This transition is an absorption process.

When an electron undergoes a transition from higher energy level to lower energy level then it emits energy to complete the process. This transition is an emission process.

An excited electron has higher energy than that present in the ground state of the atom. Energy is to be released when an excited electron returns to its ground state. Therefore the excited electron emits energy when it jumps from an excited state (higher energy state) to the ground state (lower energy state). Hence option (4) is the correct answer.

Learn more:

1. Which transition is associated with the greatest energy change? brainly.com/question/1594022

2. Describe the spectrum of elemental hydrogen gas: brainly.com/question/6255073

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Atomic structure

Keywords: electronic transition, absorption, emission, lower, higher, energy level, excited state, ground state, emit, lower energy state.

What results from gas particles not having a strong attraction to one another?

Answers

variable volume and variable shape:)

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Consider this equilibrium for a buffer solution: CH3COOH + H2O CH3COO- + H3O + . When a small amount of acid is added to this system, which statement is true when equilibrium is reestablished? A. [CH3COO-] and pH have both increased. B. [CH3COOH] and pH have both decreased. C. [CH3COO-] has decreased and pH remains relatively constant. D. [CH3COOH] has decreased and pH remains relatively constant. E. [CH3COO-] has increased and pH remains relatively constant.

Two solutions are added together and the new solution becomes hot. This tells you that

Why are fungi more closely related to animals than they are to plants? A. animals and fungi are both autotrophs, while plants are heterotrophs B. animals and fungi are both heterotrophs, while fungi are autotrophs C. fungi and animals are both heterotrophs, while plants are autotrophs D. fungi and plants are both autotrophs, while animals are heterotrophs