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4 years ago

Why We Write Chlorine As Cl2 Not As Cl

2 answers:

4 0

We write chlorine as CL2 because chlorine is a non metallic gas . Also as chlorine is a gas it occurs in diatomic form as cl2 such as hydrogen(h2).

Afina-wow [57]4 years ago

4 0

Because is non metallic glass

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How many moles of sf6 are there in 459500000000000000 molecules of sf6

Vlada [557]

Answer : The number of moles of $SF_6$ is, $7.63\times 10^{-7}$ moles.

Solution :

As we know that,

1 mole contains $6.022\times 10^{23}$ number of molecules

As, $6.022\times 10^{23}$ number of molecules of $SF_6$ are present in 1 mole of $SF_6$

So, $4595\times 10^{14}$ number of molecules of $SF_6$ are present in $\frac{4595\times 10^{14}}{6.022\times 10^{23}}=7.63\times 10^{-7}$ moles of $SF_6$

Therefore, the number of moles of $SF_6$ is, $7.63\times 10^{-7}$ moles.

5 0

3 years ago

Completion

Snowcat [4.5K]

Answer:

Compress
Fixed
Melts
Melting Point
Freezing Point
High
Crystalline
Lattice
Unit cell
Amorphous solids

Explanation:

Solids tend to be dense and difficult to compress.

They do not flow or take the shape of their containers, like liquids do, because the particles in solids vibrate around fixed points.

When a solid is heated until its particles vibrate so rapidly that they are no longer held in fixed positions, the solid melts.

Melting point is the temperature at which a solid changes to a liquid. The melting and freezing point of a substance are at the same temperature.

In general, ionic solids tend to have relatively high melting points, while molecular solids tend to have relatively low melting points.

Most solids are crystalline

The particles are arranged in a pattern known as a crystal lattice

The smallest subunit of a crystal lattice is the unit cell

Some solids lack an ordered internal structure and are called amorphous solids.

7 0

3 years ago

What is a mixture called when it has its different components mixed evenly within the substance? Heterogeneous mixture Homogeneo

larisa86 [58]

It would be considered a Homogeneous Mixture. A mixture with two or more components mixed evenly is a Homogeneous mixture.

3 0

4 years ago

Read 2 more answers

Given the propane molecule C3H8(g)! a) What is the balanced equation for the combustion of propane in O2?(20 pts.) b) What is th

lubasha [3.4K]

Answer:

The answer to your question is below

Explanation:

Propane = C₃H₈

Process

1.- Write the chemical reaction

C₃H₈ + O₂ ⇒ CO₂ + H₂O

balanced chemical reaction

C₃H₈ + 5O₂ ⇒ 3CO₂ + 4H₂O

Reactants Elements Products

3 C 3

8 H 8

10 O 10

b) Standard enthalpy

Propane -104.7 kJ/mol

Oxygen 0 kJ/mol

Carbon dioxide -393.5 kJ/mol

Water -241.8 kJ/mol

ΔH° = ∑ΔH° products - ∑H° reactants

ΔH° = 3(-393.5) + 4(-241.8) - [(-104.7) + 0]

-Simplification

ΔH° = -1180.5 kJ/mol - 967.2 kJ/mol + 104.7 kJ/mol

ΔH° = - 2042.5 kJ/mol

This reaction is exothermic because ΔH° is negative.

4 0

3 years ago

In _, Solon was chosen as an Athenian statesman with reformation powers.

NeX [460]

594 B.C.E.

In 594 B.C.E., Solon was chosen as an Athenian statesman with reformation powers.

3 0

3 years ago

Read 2 more answers