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podryga [215]
3 years ago
13

What is the maximum number of valence electrons an element can have?

Chemistry
2 answers:
sergeinik [125]3 years ago
6 0

Answer:

8

Explanation:

morpeh [17]3 years ago
6 0

the maximum number is 8

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2Fe(OH)3 Fe2O3+3H2O how many grams of Fe2O3 are produced if 10.7 grams of Fe (OH)3 react in this way
sasho [114]

Answer: 7.98 grams of Fe_2O_3 are produced if 10.7 grams of Fe(OH)_3 are reacted.

Explanation:

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}      .....(1)  

Putting values in equation 1, we get:

\text{Moles of} Fe(OH)_3=\frac{10.7g}{106.87g/mol}=0.100mol  

The chemical equation for the reaction is

2Fe(OH)_3\rightarrow Fe_2O_3+3H_2O

By Stoichiometry of the reaction:

2 moles of Fe(OH)_3 produce = 1 mole of Fe_2O_3

So, 0.100 moles of Fe(OH)_3 produce= \frac{1}{2}\times 0.100=0.05mol of Fe_2O_3  

Mass of Fe_2O_3 =moles\times {\text{Molar Mass}}=0.05mol\times 159.69g/mol=7.98g  

Hence 7.98 grams of Fe_2O_3 are produced if 10.7 grams of Fe(OH)_3 are reacted.

3 0
2 years ago
Different organisms have different "habitats." These are all examples of habitats: The tops of banana trees in a rainforest The
Paul [167]

Answer:

Oxygen/Carbon dioxide

Explanation:

The basic description of living things are organisms which have a cell system to produce energy with either primarily via respiratory exchange abilities, by the existence .

The primal survival need for a possessing a habitat would have to be oxygen/carbon dioxide present,

I hope this was helpful.

5 0
3 years ago
Read 2 more answers
Which statement is correct about the rate of a chemical reaction? (5 points)
Elza [17]

Answer:

they don't depend on the temperature

6 0
3 years ago
I am the system that helps to give your body structure. I have joints that link up and cartilage so smooth. It absorbs lots of i
stepan [7]

Answer:

Skeletal system

Explanation:

The skeletal system is made up of all the bones, cartilage, and ligaments in the body. There are over 200 bones in the human skeleton, connected by joints which allow them to bend and rotate.

It protects the vital organs, gives our body form and structure, and allows us to move (or bust a move!)

To move, the skeletal system works with the muscles and nerves in the body.

7 0
3 years ago
A process in which one or more substances change to make one or more new substances is called a
svetlana [45]
The answer to your question is: Chemical Reaction.
8 0
3 years ago
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