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2 years ago

What is the correct way to write the molar mass of iron oxide as a conversion factor

Chemistry

1 answer:

satela [25.4K]2 years ago

5 0

Answer:

3rd option.

159.7g Fe2O3 / 1 mol Fe2O3

Explanation:

The correct way to write the molar mass of iron oxide as a conversion factor is illustrated below:

Mass of Fe2O3 = 159.7g

Number of mole = 1 mole

Molar Mass of Fe2O3 =?

Molar Mass = Mass /number of mole

Molar Mass =

159.7g Fe2O3 / 1 mol Fe2O3

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How many moles are in 35.0 grams of H₂O?

Nikitich [7]

1.94 moles

I did 35/18.02 because 18.02 is the molar mass of water

3 0

2 years ago

Which substance is the oxidizing agent in the following reaction? Fe2S3 + 12HNO3 → 2Fe(NO3)3 + 3S + 6NO2 + 6H2O Which substance

aleksandr82 [10.1K]

Answer:

HNO3 is the oxidizing agent

Explanation:

Step 1:

The oxidizing agent is responsible to oxidize another. but itself undergoes a reduction .

Fe2S3:

Fe has an oxidation number of +3

S has an oxidation number of -2

HNO3:

O has an oxidation number of -2 ( we have 3 times O so this makes -6)

H has an oxidation number of +1

N has an oxidation number of +5

Fe(NO3)3

O has an oxidation number of -2 ( we have 3 times O so this makes -6)

Fe has an oxidation number of +3

Since NO3 has an oxidation number of -1; N has an oxidation number of +5

S alone has an oxidation number of 0

NO2:

O has an oxidation number of -2 (we have 2 times O, this makes -4)

N has an oxidation number of +4

Fe doesn't change from oxidation number. It stays +3

N goes from +5 to +4 → this is a reduction

S goes from -2 to 0 → this is an oxidation

The reducing agent is the compound that contributes the oxidized species (S).

The oxidizing agent contributes the reducing species (N)

The answer is HNO3

5 0

2 years ago

Which substance produces hydroxide ions in solution?

Olegator [25]

Answer:

An Arrhenius Base

Explanation:

The definition of this is a base that is a hydroxide ion donor.

8 0

2 years ago

When aqueous solutions of AgNO 3 and KI are mixed, AgI precipitates. The balanced net ionic equation is ________. Ag (aq) I- (aq

dimulka [17.4K]

Answer:

Ag⁺(aq) + Cl⁻(aq) ==> AgCl(s)

Explanation:

The net ionic equation can be described as the equation that contains only those species which would be participated in the chemical reaction. The spectator ions are the type of the ions that are present in both sides of the chemical equation these ions could not be present in the net ionic equation

First, it is easiest if you write the compete molecular equation:

AgNO₃(aq) + KCl(aq) ⇔ AgCl(s) + KNO₃(aq)

we look up which compounds are soluble (aq) and which are not (s). In this case, silver chloride (AgCl) is not soluble. Thus, the net ionic equation is...

Ag⁺(aq) + Cl⁻(aq) ==> AgCl(s)

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2 years ago

How is a model of an atom different from a real atom? A. A model of an atom is not as big as an actual atom. B. A model of an at

tatyana61 [14]

The option that would best contrast the real and the model atoms is letter "D. model of an atom is not as small as an actual atom". The size of an atom is said to be no more than 0.1 to 0.5 nanometers. The models are used to proper illustrate the atom's physical attributes. That is why, it needs to be bigger in size.

5 0

2 years ago