All categories

3 years ago

Determine whether kinetic energy is being converted to potential energy, or vice versa, in the following processes.

Chemistry

1 answer:

Pavel [41]3 years ago

6 0

Answer:

All the processes given involves the conversion of potential energy to kinetic energy

Explanation:

The kinetic energy is the energy possessed by an object because of its motion, equal to one half the body's mass times the square of its speed.

i.e $K.E = \dfrac{1}{2}mv^2$

On the other hand, The potential energy is the energy possessed by an object because of its position in a gravitational or electric field, or its condition as a stretched or compressed spring, as a chemical reactant,or by having rest mass.

SO, from both definitions :

Water cascades downward in a waterfall → involves the conversion of potential energy to kinetic energy

A player kicks a football → involves the conversion of potential energy to kinetic energy

An electric current is generated by a chemical reaction in a battery. → involves the conversion of potential energy to kinetic energy

Water boils when heated on a gas stove. → involves the conversion of potential energy to kinetic energy

You might be interested in

Gaseous ethane (CH,CH,) will react with gaseous oxygen (0,) to produce gaseous carbon dioxide (CO) and gaseous water (H2O). Supp

notka56 [123]

Answer:

0.00 g

Explanation:

We have the masses of two reactants, so this is a limiting reactant problem.

We will need a balanced equation with masses, moles, and molar masses of the compounds involved.

1. Gather all the information in one place with molar masses above the formulas and masses below them.

Mᵣ 30.07 32.00

2CH₃CH₃ + 7O₂ ⟶ 4CO₂ + 6H₂O

Mass/g: 1.50 11.

2. Calculate the moles of each reactant

$\text{moles of C$_{2}$H}_{6} = \text{1.50 g C$_{2}$H}_{6} \times \dfrac{\text{1 mol C$_{2}$H}_{6}}{\text{30.07 g C$_{2}$H}_{6}} = \text{0.04988 mol C$_{2}$H}_{6}\\\\\text{moles of O}_{2} = \text{11. g O}_{2} \times \dfrac{\text{1 mol O}_{2}}{\text{32.00 g O}_{2}} = \text{0.34 mol O}_{2}$

3. Calculate the moles of CO₂ we can obtain from each reactant

From ethane:

The molar ratio is 4 mol CO₂:2 mol C₂H₆

$\text{Moles of CO}_{2} = \text{0.04988 mol C$_{2}$H}_{6} \times \dfrac{\text{4 mol CO}_{2}}{\text{2 mol C$_{2}$H}_{6}} = \text{0.09976 mol CO}_{2}$

From oxygen:

The molar ratio is 4 mol CO₂:7 mol O₂

$\text{Moles of CO}_{2} = \text{0.34 mol O}_{2}\times \dfrac{\text{4 mol CO}_{2}}{\text{7 mol O}_{2}} = \text{0.20 mol CO}_{2}$

4. Identify the limiting and excess reactants

The limiting reactant is ethane, because it gives the smaller amount of CO₂.

The excess reactant is oxygen.

5. Mass of ethane left over.

Ethane is the limiting reactant. It will be completely used up.

The mass of ethane left over will be 0.00 g.

8 0

3 years ago

Who is boo johnson ??

matrenka [14]

a skate border? i think ?

7 0

3 years ago

Read 2 more answers

How is beryllium similar to calcium?<br>

Molodets [167]

Answer:

The second column on the periodic table of the chemical elements is collectively called the alkaline earth metal group: beryllium, magnesium, calcium, strontium, barium, and radium. Because the outer electron structure in all of these elements is similar, they all have somewhat similar chemical and physical properties.

Explanation:

8 0

3 years ago

An ion is an atom with a net electrical charge due to ______.

Serga [27]

<span>the loss of one or more electrons & the addition of one of more electrons</span>

7 0

3 years ago

Read 2 more answers

What is the working of NMR?

tiny-mole [99]

Answer:

NMR stands for Nuclear Magnetic Resonance, and NMR spectroscopy is the technology that makes use of the phenomena of NMR in the analysis of a material's molecular structure through measurement and observance of the nuclear spin interactions, in order to determine the biological, physical and chemical properties of the material

NMR works by the noting that some atoms in molecules placed in a strong magnetic field display the characteristics of small magnets. The application of a broad spectrum radio frequency to the molecules will cause the nuclei to resonate at particular frequencies. An NMR spectrum is formed from the measured nuclei resonant frequencies such that the graph peaks shows the correct frequencies in the sample and the peak height is directly related to the proportion or number of the nuclei which are resonating to a given frequency, such that the frequency values are indicative of the type of atoms and their distances apart from a given atom

Explanation:

4 0

3 years ago