If an objects mechanical energy is equal to its potential energy how much Kinetic energy does it have explain

A flask that weighs 450 g is filled with 145 ml of benzene. The weight of the flask and benzene is found to be 754 g. From this

vaieri [72.5K]

Answer:

Density, $d=2.09\ g/cm^3$

Explanation:

Given that,

Mass of a flask is 450 g

Volume of benzene added to the flask is 145 mL or 145 cm³

The weight of the flask and benzene is found to be 754 g.

We need to find the density of the benzene.

Weight of benzene added = total weight of flask and benzene-mass of flask

m = 754 g - 450 g

m = 304 g

Density = mass/volume

So,

$d=\dfrac{304\ g}{145\ cm^3}\\\\d=2.09\ g/cm^3$

So, the density of the benzene is $2.09\ g/cm^3$ .

7 0

3 years ago

What happens to an atom of sulfur (S) if it loses an electron?

WITCHER [35]

Answer:

An atom becomes anion when it gains or loses electrons. The ions that are formed when an atom loses electrons are positively charged because they have more protons in the nucleus than electrons in the electron cloud.

Explanation:

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3 0

4 years ago

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Determine the electron-group arrangement, molecular shape, and ideal bond angle for the following molecule: PH3 Electron-group a

Alecsey [184]

Answer:

The molecular shape and ideal bond angle of the $PH_{3}$ is trigonalbipyramidal and $109.5^{o}$ respectively.

Explanation:

The structure of $PH_{3}$ is as follows.(in attachment)

From the structure,

Phosphor atom has one lone pair and three hydrogens are bonded by six electrons.

Therefore, total electrons invovled in the formation $PH_{3}$ is eight.

Hence, four electron groups which indicate the tetrahedral shape. But one pair is lone pair i.e, present on the phosphor atom.

Therefore, ideal geometry of the $PH_{3}$ molecule is <u>Trigonalbipyramidal.</u>

The ideal angle of trigonalbipyrmidal is $109.5^{o}$ .

All three bonds of P-H has $109.5^{o}$ .

Therefore, ideal bond angle is <u> $109.5^{o}$ .</u>

5 0

3 years ago

What is the most likely mode of decay for each?(c) ¹¹⁰₄₁4Ru

zmey [24]

The most likely mode of decay for a neutron-rich nucleus is one that converts a neutron into a proton.

<h3>What is radioactive decay?</h3>

The process through which an unstable atomic nucleus loses energy through radiation is known as radioactive decay, also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration. A substance that has unstable nuclei is regarded as radioactive. Alpha decay, beta decay, and gamma decay are three of the most frequent kinds of decay, and they all entail the emission of one or more particles. Beta decay is a result of the weak force, while the nuclear force and electromagnetism are in charge of the other two mechanisms. The capture of an inner electron from one of the electron shells by an unstable nucleus is the fourth prevalent form of decay.

To learn more about radioactive decay visit:

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6 0

2 years ago

In a lab in New York, Thomas and Nikola collected data over several trials. Thomas recorded his measurements as 10.0 A, 11 A, an

Anna11 [10]

Nikola's reading has a lower range and it is logical to conclude that his reading is more precise.

Explanation:

Precision is the ability to reproduce the same set of result from a measurement. The more repeatability a measurement is, the more precise it is.

From the given pool of data, it is easy to determine which set of data is more precise over the other.

Thomas measurements: 10.0 A, 11 A, and 8 A