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Arte-miy333 [17]
3 years ago
14

How many totals atoms are present in the compound : Mg(OH)2 A. 3 B. 4 C. 5 D. 7

Chemistry
1 answer:
Semenov [28]3 years ago
5 0

1 atom Mg, 2 atoms O and 2 atoms H.

1 + 2 + 2 = 5, so correct answer is C

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The original substance can be recovered.<br> Is this and physical change or chemical change?
vlabodo [156]

Answer:

That's not true. It would in fact be physical.

Explanation:

physical change: some of its physical properties may change but its identity does not

6 0
3 years ago
Which statement describes a property of covalent compounds?
Marat540 [252]

They have a low boiling point because of weak intermolecular forces. They

Explanation:

Covalent compounds are compounds that are known to have weak intermolecular forces and hence low boiling point.

Covalent bonds are bond formed between two or more atoms having zero or very small electronegativity difference. Such bonds exists between molecules of non-metals.

Here are some properties of covalent bonds;

  • They are gases or volatile liquids or low melting point solids
  • Most of them are insoluble in polar solvents or water but they are generally soluble in non-polar organic solvents.
  • They are mainly non-conductors.

learn more:

Covalent compound brainly.com/question/3109255

Covalent bond brainly.com/question/6029316

#learnwithBrainly

3 0
3 years ago
How many moles are in 3.01*10^23 atoms of Mg
Basile [38]
1 mole ------------ 6.02x10²³ atoms
? moles ----------- 3.01x10²³ atoms

moles = ( 3.01x10²³ ) x 1 / 6.02x10²³

=> 0.5 moles Mg
7 0
4 years ago
Explain how the mid-ocean ridge supports<br> the theory of sea floor spreading.<br> help plzzz:(
Sedaia [141]
The ridge of mid ocean b is the answer hope this helps
4 0
4 years ago
A block of metal has a width of 3.2 cm , a length of 17.1 cm , and height of 4.6 cm . Its mass is 1.4 kg . Calculate the density
dsp73

The Density of  the metal  is 5.6 g/cm³

<h3>What is the density of a substance?</h3>

The density of a substance is the ratio of the mass and the volume of the substance.

  • Density = mass/volume


The density of the metal is calculated as follows:

mass of metal = 1.4 kg = 1400 g

volume of metal = 3.2 * 17.1 * 4.6 = 251.712 cm³

Density of metal = 1400 g/251.712 cm³

Density of the metal  = 5.6 g/cm³

Therefore, the density of the metal is obtained from the mass and the volume of the metal.

Learn more about density at: brainly.com/question/1354972

#SPJ1

3 0
2 years ago
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