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BlackZzzverrR [31]
2 years ago
14

when 5.60g of an iron oxide is heated with carbon, 3.92g of iron is produced. calculate the empirical formula of the iron oxide

Chemistry
1 answer:
svetlana [45]2 years ago
5 0

Answer:  Fe2O3

Explanation:

  5.60 g Iron Oxide

-  3.92 g Iron

===========

=  1.68 g Oxygen

Convert Fe and O to moles:

3.92 g Iron/55.85 = 0.0702 moles Fe

1.68 g Oxygen/16 = 0.105 moles O

The ratio of O to Fe is 1.50.  There are 3/2 O for each Fe.  Multiply by 2 to get whole numbers:  2Fe for every 3O:  Fe2O3

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Savatey [412]

Answer:

Option 4 ) 1-butyne

Explanation:

In organic chemistry, you should use IUPAC convention in order to name an organic compound. First of all, you should identify the lenght of the organic chain, for this case, you have 5 C atoms, but in fact, you have a triple bond (which would be a substitute: ethynil-) as a substitute, so the main skeleton would have 4 C atoms (a butane)

Then, you start by numbering carbon N° 1 as the one that has the substitute (triple bound)-starting from the right, it would be the second C):

CH₃-CH₂-CH₂-C≡CH

Which will finally leads us to 1-butyne

5 0
3 years ago
Read 2 more answers
State two safety precautions to be taken when performing diluting concentrated sulphuric acid with water​
motikmotik

<em>Explanation:</em>

<em>safety precautions to be taken when performing diluting concentrated sulphuric acid with water</em>

  1. Using gloves while diluting to avoid injury from hot sulfuric acid to hands.
  2. Wearing safety glasses to protect eyes
  3. Must wear lab coat before performing any chemistry practical
  4. Safety boots to protect your legs.

\sf \small \: Thanks \:  for \:  joining \:  brainly  \: community!

4 0
1 year ago
Which subatomic particle contains the energy stored in chemical bonds
Effectus [21]
Pretty sure that the energy stored in chemical bonds is ATP, so probably the mitochondria? idk if thats what you are asking<span />
5 0
3 years ago
How does the crystalline structure of a metal differ from the structure of an ionic compound, such as sodium chloride or cesium
Sergio [31]

Answer:

The metal cube lattice is made of only one kind of atom.

Explanation:

As we know that metallic crystals are made up of only one kind of element.  A metal crystal is actually a huge sea of positive charges embedded in the layers of negative charges (electrons). The whole crystal is made up of same kind of atoms, e.g crystals of gold, crystals of iron.

If we talk about structure of metallic crystal, it can be body centered cubic, simple cubic, hexagonal or close cubic packing.

Now, coming towards the ionic crystals, we know that they are basically the crystals of ionic compounds like sodium chloride or cesium chloride. These crystals are formed due to ionic bonding between two or more than two kinds of elements/atoms. It is not possible for an ionic crystal to be composed of only one kind of atom. As far as structure is concerned, they can have different structure based on bonding between atoms in an ionic compound, e.g NaCl has octahedral geometry.

Therefore, it is very evident that best option is A.

7 0
3 years ago
What mixture is it ?
joja [24]

The mixture should be

Heterogeneous

Explanation:

<u>D</u><u>e</u><u>f</u><u>i</u><u>n</u><u>i</u><u>t</u><u>i</u><u>o</u><u>n</u><u>:</u> Diverse in character or content.

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