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3 years ago

Why is the bond angle in a water molecule less than the bond angle of methane

1 answer:

6 0

The bond angle in the Water Molecule is approx. 104.5 degrees. The methane molecule is approx. 109.5 degrees. The differences, is due to the force from the surrounding molecules and atoms. For example the Lone pairs of electrons.

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Rusting of iron is a very common chemical reaction. It results in one form from Fe reacting with oxygen gas to produce iron (III

Vlada [557]

Answer: The given amount of iron reacts with 9.0 moles of $O_2$ and produce 6.0 moles of $Fe_2O_3$

Explanation:

We are given:

Moles of iron = 12.0 moles

The chemical equation for the rusting of iron follows:

$4Fe+3O_2\rightarrow 2Fe_2O_3$

For oxygen gas:

By Stoichiometry of the reaction:

4 moles of iron reacts with 3 moles of oxygen gas

So, 12.0 moles of iron will react with = $\frac{3}{4}\times 12.0=9.0mol$ of oxygen gas

For iron (III) oxide:

By Stoichiometry of the reaction:

4 moles of iron produces 2 moles of iron (III) oxide

So, 12.0 moles of iron will produce = $\frac{2}{4}\times 12.0=6.0mol$ of iron (III) oxide

Hence, the given amount of iron reacts with 9.0 moles of $O_2$ and produce 6.0 moles of $Fe_2O_3$

5 0

3 years ago

All of the above

Natalka [10]

The plants without any fertiliser could be the control, to see what the change in the independent variable (fertiliser) does to the growth of the plant (dependant variable).

Hope that helps.

8 0

3 years ago

2. How many moles of Na2CO3 are available?

Tanya [424]

malai aaudaina aati jabo tapai

lai aaudaina

4 0

3 years ago

How do you know if a reaction is exothermic

melisa1 [442]

When there is heat released

7 0

3 years ago

Read 2 more answers

Support gases system are subject to the same hazards as, present in any piped medical gas system with the additional hazard of__

balandron [24]

The complete statement will be "Support gases system are subject to the same hazards as, present in any piped medical gas system with the additional hazard of higher pressure"

<h3>What are gas systems?</h3>

Generally, A gas system is simply defined as an assemblage of tubes, used for gas reticulation and circulation.

In conclusion, a higher pressure will be experienced as an additional hazard to the medical gas system.