The water displacement method is used to find

Suppose you are shooting a basketball toward a hoop. As the ball rises in the air, its ---------------- energy increases and its

Anna11 [10]

Answer:

Suppose you are shooting a basketball toward a hoop. As the ball rises in the air, its -------Potential --------- energy increases and its -----------kinetic----------------- decreases.

Explanation:

Kinetic energy is the energy of movement or change. Potential energy is the energy a system has as a result of being able to undergo some change. ... As an object falls its potential energy decreases, while its kinetic energy increases. The decrease in potential energy is exactly equal to the increase in kinetic energy.

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3 years ago

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What occurs during mitosis? Choose the correct answer.

vodka [1.7K]

<span>the chromosomes, which have already duplicated, condense and attach to spindle fibers that pull one copy of each chromosome to opposite sides of the cell. The result is two genetically identical daughter nuclei.</span>

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3 years ago

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A 2.5 M solution of a monoprotic acid has a pH of 2.50 at 25°C. What is the equilibrium constant for this acid? Is it a strong o

tatuchka [14]

Answer:

The correct option is C

Explanation:

From the question we are told that

The concentration of the acid solution is $C = 2.5M$

The pH of the acid is $pH_a = 2.5$

Looking at the pH of the acid we can say that it is a strong acid

This because its pH fall between 0-7

The generally dissociation chemical equation for this acid is represented as

$HA$ ⇄ $H^{+} + A^{-}$

So the equilibrium constant for this reaction is mathematically represented as

$K_c = \frac{[H^+] [A^-]}{[HA]}$

and the pH of can be mathematically represented as

$pH = -log [H^+]$

=> $H^+ = 10^{-pH}$

substituting value

$H^+ = 10^{-(2.50)}$

$H^+ = 0.0031623M$

Looking at the chemical equation we see that the ratio of the moles for the product is one is to one

Secondly the new concentration of the reactant will be

$HA = 2.5 - 00031623$

$[A^-] = 0.003163 M$

So the equilibrium constant is

$K_c = \frac{0.0031623 * 0.0031623 }{(2.5 - 0.0031623 }$

$K_c = 4* 10^{-6}$

3 0

3 years ago

Given the equation representing a phase change at equilibrium:

Yanka [14]

C..........................................................

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3 years ago

Explain how the integumentary system plays a crucial role in the ability to maintain homeoestasis

Maksim231197 [3]

The integumentary system has multiple roles in homeostasis, including protection, temperature regulation, sensory reception, biochemical synthesis, and absorption. All body systems work in an interconnected manner to maintain the internal conditions essential to the function of the body.

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3 years ago