What is the oxidation state of Fe(s)

Which Ions oxidize aluminum?<br><br> Li^+, Ca^2+, Ag+, Sn^2+

pishuonlain [190]

Aluminum can be oxidized by $Li^{+}$ and $Ca^{2+}$

<h3>What is oxidizing?</h3>

Some of the metal corrodes (or oxidizes) and forms the corresponding metal oxide on the surface as a result of a chemical reaction between the metal surface and the oxygen in the air. The corrosion products that occur in some metals, like steel, are highly apparent and loose.

According to reactivity series (The array of metals in the descending order of their reactivities is referred to as the metals' reactivity series. It is sometimes referred to as the metals in the activity series.)

Lithium and calcium ions are more reactive than aluminum ion and they are less electronegative.

Since silver and tin are more electronegative than aluminum so, they cannot oxidize aluminum.

∴ $Li^{+}$ and $Ca^{+2}$ ions can oxidize aluminum.

Learn more about electronegativity here brainly.com/question/16446391

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8 0

2 years ago

Find mass of 4.5 moles of co2

Kobotan [32]

Answer:

198g

Explanation:

Molar Mass of CO2 = 12 + (2x16) = 12 + 32 = 44g/mol

Number of mole of CO2 = 4.5moles

Mass of CO2 =?

Mass = number of mole x molar Mass

Mass of CO2 = 4.5 x 44 = 198g

5 0

3 years ago

Of the following statements about water's latent heat and changes in state, which is/are true? choose all that apply.

postnew [5]

When water evaporates, its latent heat of evaporation absorbs heat.

<h3>What is Latent heat?</h3>

A body or thermodynamic system can release or absorb latent heat during a constant-temperature process, often a first-order phase transition.

There are two types of latent heat:

The heat of freezing
The heat of vaporization

The statements about water's latent heat and changes in state are:

The heat of freezing is the quantity of thermal energy produced as a liquid freezes, and the heat of vaporization is the quantity of thermal energy needed to change a liquid into a gas.
Water may move energy from one location to other thanks to latent heat.
There aren't any weak (hydrogen) bonds between water molecules in the vapor state.
Hurricanes are propelled by the latent heat of condensation, which occurs when water vapor condenses and turns into a liquid.
All water molecules in the solid state are connected by flimsy (hydrogen) bonds.

To learn more about latent heat, refer:

brainly.com/question/5401454

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4 0

2 years ago

List 3 common examples of physical changes

OverLord2011 [107]

Crushing a can
breaking glass
boiling water

4 0

4 years ago

Read 2 more answers

A 8.00g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have a molecular molar mass of

Ne4ueva [31]

Answer:

C3H6.

Explanation:

Data obtained from the question:

Mass of the compound = 8g

Mass of CO2 = 24.01g

Mass of H2O = 13.10g

Next, we shall determine the mass of C, H and O present in the compound. This is illustrated below:

Molar Mass of CO2 = 12 + (2x16) = 44g/mol

Molar Mass of H2O = (2x1) + 16 = 18g/mol

Mass of C in compound = Mass of C/Molar Mass of CO2 x 24.01

=> 12/44 x 24.01 = 6.5g

Mass of H in the compound = Mass of H/Molar Mass of H2O x 13.1

=> 2x1/18 x 13.1 = 1.5g

Mass of O in the compound = Mass of compound – (mass of C + Mass of H)

=> 8 – (6.5 + 1.5) = 0

Next, we shall determine the empirical formula of the compound. This is illustrated below:

C = 6.5g

H = 1.

Divide by their molar mass

C = 6.5/12 = 0.54

H = 1.4/1 = 1.

Divide by the smallest

C = 0.54/0.54 = 1

H = 1/0.54 = 2

Therefore, the empirical formula is CH2

Finally, we shall determine the molecular formula as follow:

The molecular formula of a compound is a multiple of the empirical formula.

Molecular formula = [CH2]n

[CH2]n = 44

[12 + (2x1)]n = 44

14n = 44

Divide both side by 14

n = 44/14

n = 3

Molecular formula = [CH2]n = [CH2]3 = C3H6

Therefore, the molecular formula of the compound is C3H6

4 0

3 years ago