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Nady [450]
2 years ago
5

Explain the difference between a mixture of two substances and a chemical compound formed by them​

Chemistry
2 answers:
Gnesinka [82]2 years ago
7 0

ask your mom and your family

aleksandr82 [10.1K]2 years ago
5 0

Answer:

mixtures are physically combined structures that are separated into their original components. A chemical substance is composed of one type of atom or molecule. A mixture is composed of different types of atoms or molecules that are not chemically bonded.

Explain:

yw

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the answer to this is O hypothesis

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What element has 2 electrons in the 4s sub level?
ruslelena [56]

is the Calcium because the calcium in group two which group two has 2 electron and also calcium and Potassium 4s sub level group potassium has 1 electron. :)


4 0
3 years ago
Which is a derived unit?
Step2247 [10]

Answer:

derived unit. noun. a unit of measurement obtained by multiplication or division of the base units of a system without the introduction of numerical factors.

Explanation:

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2 years ago
What is the chemical formula for the compound magnesium perchlorate? Use the list of polyatomic ions and the periodic table to h
8_murik_8 [283]

The chemical formula for the compound magnesium perchlorate is Mg(ClO₄)₂

Magnesium perchlorate or Mg(ClO₄)₂ is an ionic compound.

Perchlorate here is an anion which is represented by ClO₄⁻. Perchlorate is a polyatiomic anion, where one Cl atom is bonded to four O atoms.

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6 0
2 years ago
Jorge has an unknown mineral. The mineral has a mass of 21 grams and has a volume of 3cm3. Calculate density and find his unknow
DerKrebs [107]

Answer:

7g/cm³

Explanation:

Given parameters:

Mass of the mineral  = 21g

Volume  = 3cm³

Unknown:

Density of the mineral  = ?

Solution:

Density of a substance is the mass per unit volume of the substance.

 Density  = \frac{mass}{volume}  

  Now insert the given parameters and solve;

  Density  = \frac{21}{3}   = 7g/cm³

The mineral with a density of 7g/cm³ is Galena, an ore of lead.

6 0
3 years ago
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