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krek1111 [17]
3 years ago
14

What are the advantages of using solar energy

Chemistry
1 answer:
Ivanshal [37]3 years ago
8 0
Makes us less dependent on gas and fossil fuels, no pollution, no greenhouse gasses after installation
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Campare and Conteast Physical and chemical properties.
I am Lyosha [343]

Answer:

Physical properties are changes in color, weight, mass, density, volume, whether it is freezing, tarnishing, boiling, etc. while chemical properties are changes in the compound of the object such as whether an object is/isn't flammable, affected by acid, it dissolves, ferments, rots, ignites in water, etc.

Explanation:

Physical property examples: a piece of steel is cut in half, a sugar cube is ground up into a powder, ice melts into water, clouds form in the sky, you mow the lawn, the water turned purple when you dropped red and blue dye in it, leaves grow in the spring, ethyl alcohol boils at 79° C, you cut apples up

Chemical property examples: pancakes cook on the griddle, fireworks explode in th sky, Alka-Seltzer gives off carbon dioxide when added to water, roasting a marshmellow, milk sours when left on the counter, burning wood in a bonfire, salt dissolves in water, food is digested in the stomach

3 0
3 years ago
HURRY PLEASE
Reika [66]
Magnetic fields that attract and repel, gravity, and friction with the ground/track are the forces that act upon a meglev train. a maglev train is a train that is propelled by magnets on both the train and the tracks. gravity plus friction plus magnetic fields equals a maglev train.
6 0
3 years ago
The wavelength of the violet light emitted from a hydrogen atom is 410.1 nm. This light is a result of electronic transitions be
VashaNatasha [74]

Answer:

e. 4.847 x 10-19 J

Explanation:

From the given information:

The equation connecting the photon energy and the wavelength is:

E_{photon } = \dfrac {hc}{\lambda}

where;

planck's  \ constant  \ (h)= 6.626 * 10 ^{-34} J.s

velocity  \ of \  light \  (c) = 3.00 * 10^8 m/s

wavelength \lambda = 410.1 \ nm \times \dfrac{10^{-9} \ m}{1 \ nm}

\lambda = 4.101 \times 10^{-7} \ m

To determine the photon energy of violet light

E_{photon } = \dfrac {(6.626 \times 10^{-34} J/s ) \times (3.00 \times 10^8 \ m/s) }{4.101 \times 10^{-7} \ m}

= 4.847 × 10⁻¹⁹ J

4 0
3 years ago
Identify what kind of ligand (weak or strong), what kind of wavelength (long or short), what kind of spin (high spin or low spin
Reptile [31]

Answer:

See explanation

Explanation:

Whether a ligand is strong or weak highly depends on its position in the spectrochemical series. Ligands that are found towards the left hand side of the series are weak field ligands while ions that occur towards the right hand side of the series are strong field ligands. The spectrochemical series is an arrangement of ligands in order of increasing magnitude of crystal field splitting.

Most of the strong field ligands have strong pi bonds and are capable producing greater crystal field splitting.

NH3, an and NO2 are all strong field ligands hence they produce long wavelengths and lead to the formation of diamagnetic complexes.

7 0
3 years ago
___Fe2O3 + ___C --> ___Fe + ___ C03 balanced
SashulF [63]

Answer:

Fe2O3 + C → 2Fe + CO3

Explanation:

The unbalanced equation given in this question is as follows:

Fe2O3 + C → Fe + C03

To balance this equation, one should ensure that the number of atoms of each element on both sides of the equation is equal. The balanced equation is as follows;

Fe2O3 + C → 2Fe + CO3

N.B, there are;

- 2atoms of Fe on both sides

- 1 atom of C on both sides

- 3 moles of O on both sides

5 0
3 years ago
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