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mamaluj [8]
3 years ago
15

What is the valency of dioxide?

Chemistry
2 answers:
nasty-shy [4]3 years ago
7 0
Thus, one atom of carbon will combine with two atoms of oxygen to form the molecule CO 2 ( carbon dioxide ). (b) From the chemical formula of the compound aluminium oxide Al 2 O 3 , the valency of aluminium can be determined. ... Hence the valency of aluminium is 3
erastovalidia [21]3 years ago
5 0
The valency is 4. I'm not quite sure.
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The element carbon (C) is most likely to form covalent bonds with the element
pochemuha
<span>Carbon (C) is most likely to form covalent bonds with Beryllium (Be) or Sodium (Na) because they are both metals and covalent bonds are metals that share their valence electrons with the gases / non-metals to get to the stable octet. Krypton is a gas and Selenium is a metalloid</span>
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3 years ago
__Mg +_ AgNO3 → _Mg(NO3)2 + __Ag
damaskus [11]

<em><u>Mg + 2AgNO3 = Mg(NO3)2 + 2Ag</u></em><em><u>.</u></em>

<em><u>....</u></em>

3 0
3 years ago
Which statement best describes a weak acid?
morpeh [17]
C. Weak acids partially ionize
3 0
3 years ago
T or F: Lone pairs around the oxygen atom of a water molecule play no role in determining its molecular geometry?
Mama L [17]

Answer:

Explanation:

They play a very important part. The geometry is not a straight line. It is an angle over 90 which means that the molecule has the same general shape as a boomerang. The two hydrogens and the 2 lone electron pairs try to get away as far as possible from each other. The actual shape results in a tetrahedron shape. But the two hydrogens and 1 oxygen actually look like the aforementioned boomerang.

5 0
2 years ago
A thin sheet of iridium metal that is 3.12 cm by 5.21 cm has a mass of 87.2 g and a thickness of 2.360 mm. What is the density o
never [62]

Answer:

Therefore the density of the sheet of iridium is 22.73 g/cm³.

Explanation:

Given, the dimension of the sheet is 3.12 cm by 5.21 cm.

Mass: The mass of an object can't change with respect to position.

The S.I unit of mass is Kg.

Weight of an object is product of mass of the object and the gravity of that place.

Density: The density of an object is the ratio of mass of the object and volume of the object.

Density =\frac{mass}{volume}

            =\frac{Kg}{m^3}                 [S.I unit of mass= Kg and S.I unit of m³]

Therefore the S.I unit of density = Kg/m³

Therefore the C.G.S unit of density=g/cm³

The area of the sheet is = length × breadth

                                        =(3.12×5.21) cm²

                                       =16.2552 cm²

Again given that the thickness of the sheet  is 2.360 mm =0.2360 cm

Therefore the volume of the sheet is =(16.2552 cm²×0.2360 cm)

                                                             =3.8362272 cm³

Given that the mass of the sheet of iridium is 87.2 g.

Density =\frac{87.2 g}{3.8362272 cm^3}

             =22.73 g/cm³

Therefore the density of the sheet of iridium is 22.73 g/cm³.

5 0
3 years ago
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