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3 years ago

What is the main difference between ionic compounds and molecular compounds?

Chemistry

1 answer:

Sophie [7]3 years ago

3 0

Answer:

¨molecular compounds are formed by the sharing of electrons, and ionic compounds are formed by the transfer of electrons¨

Explanation:

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A board of wood has a density of 0.487 g/cm3. The board is measured to have a length of 3.21 cm, a width of 12.2 cm and a height

ivolga24 [154]

Answer:

The mass of board is 1.52 g.

Explanation:

Given data:

Density of wood = 0.487 g/cm³

Length of board = 3.21 cm

Width of board = 12.2 cm

Height of board = 0.80 mm (0.80/10=0.08 cm)

Mass of board = ?

Solution:

We know that density of an object is equal to the mass of substance divided by its volume. So we can calculate the mass from density formula.

Formula:

D = m/v

d = density

m = mass

v = volume

Now we will calculate the volume first.

V = length × width × height

V = 3.21 cm × 12.2 cm × 0.08 cm

V = 3.13cm³

Now we will calculate the mass.

D = m/v

0.487 g/cm³ = m/ 3.13 cm³

m = 0.487 g/cm³ × 3.13 cm³

m = 1.52 g

The mass of board is 1.52 g.

5 0

3 years ago

Calculate how many grams of oxygen form when each quantity of reactant completely reacts.. . 2HgO----->2Hg+O2

goblinko [34]

<span>6.96g HgO
hope it helps.
</span>

3 0

3 years ago

Why does silicone dioxide have a higher melting point than sodium chloride?

kondor19780726 [428]

$\color{Black}\huge{Answer}$

It has a very high melting point as the ionic bond is very strong between them.
More force is required to break down.
Silicon dioxide is a giant covalent structure.
It also has the highest melting point because the covalent bonds between them is the strongest.

8 0

3 years ago

Help chem will mark brainlist

JulsSmile [24]

Answer:

152.4

Explanation:

: )

7 0

3 years ago

Chlorine-36 does what

Lelu [443]

Answer:

Chlorine-36 undergoes β-decay.

Explanation:

Cl-36 is radioactive. It emits an electron ( a β-particle) to become more stable and forms Ar-36.

The nuclear equation is

$_{17}^{36}\text{Cl}\longrightarrow_{-1}^{0}\text{e} + _{18}^{36}\text{Ar}$

3 0

4 years ago