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Shtirlitz [24]
4 years ago
15

A metal, M, forms an oxide compound with the

Chemistry
1 answer:
lapo4ka [179]4 years ago
5 0

Answer:

Group 1

Explanation: because the compound has a formula of M2O , the number of valence electrons of M should be 1.

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Thompson, Rutherford, Bohr, Planck, and Einstein all contributed models to help describe the atom and atomic
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Answer:

d i think

Explanation:

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3 years ago
According to the kinetic molecular theory, which statement describes the particles of an ideal gas? -1)The motion of the gas par
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4 0
4 years ago
Which half-reaction correctly shows the oxidation of iron
pishuonlain [190]

Answer:

What is the oxidation half reaction for iron?

The two elements involved, iron and chlorine, each change oxidation state; iron from +2 to +3, chlorine from 0 to -1. There are then effectively two half-reactions occurring. These changes can be represented in formulas by inserting appropriate electrons into each half-reaction: Fe2+ → Fe3+ + e.

Hope this helps..

8 0
3 years ago
What is the evidence of a chemical reaction when the fireworks go off
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When fireworks go off, they produce smoke, which is evidence of a new substance being created.

6 0
4 years ago
1. What role does energy play in sound?
Lilit [14]

Answer:

1. Sound is a energy (mechanical)produced by vibrating objects and sound energy is movement of energy through particles.

2.Space occupied by the substance

3.<u>Propagation</u> of <u>Sound Wave</u> and <u>particles of the medium</u>

4.High-Frequency(Ultrasonic wave)

Explanation:

1.Sound is the form of energy which causes sensation of hearing to our ear.It is produce by vibrating objects. When the objects vibrate(to and fro motion) ,they pushes the particles of medium creating the region of high density called compression .When the particles moves backward ,they creates a region of low density called Rarefaction.This pattern repeats indefinitely.

2.Volume is the quantity of three dimensional space occupied by substances like solid,liquid and gases. The SI unit of volume is

m^{3}

In metric system unit of volume is liter

3. Longitudinal Waves: Waves in which displacement of the medium particles are parallel(in the same direction) to the propagation of wave.

Sound wave is longitudinal wave.Hence its particles moves in the same direction as the wave (energy)travel.

4.Frequency: The number of times sound wave passes a given point in one second.Its SI unit is Hertz(Hz).

Frequency of vibration decides the Pitch of the sound waves producing them.

A sound wave of High Pitch means it is oscillating rapidly(at high speed).These are also called Ultrasonic waves. These have frequency more than 20000 Hz. Human being can't hear ultrasonic waves.

7 0
3 years ago
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