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3 years ago

Consider the reaction below.

1 answer:

6 0

This answer to this question is a rule that is applied to any reaction taken at dynamic equilibrium, with respect to 500 K. In other words, you can say that this reaction is of no use to us -

In a chemical equilibrium, it is known that the forward and reverse reactions occur at equal rates. At this point the concentrations of products and reactants remain constant, or in other words do not change

Solution = Option C

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Mandy is testing an unknown solution to determine whether it is an acid or a base. she places a piece of red litmus paper into t

Umnica [9.8K]

The answer is Mandy’s solution is a Base/Alkaline solution. Alkaline solution turns red litmus blue while acidic solution turns blue litmus red. In acidic solution, the red litmus remains red while in alkaline solution, the blue litmus remains blue. However, litmus paper can never tell you the exact pH number of a solution

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4 years ago

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What is the formula for an ionic compound that forms out of Sr and Br?

lesantik [10]

Answer: St Br2

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3 years ago

Why is there a difference in the conductivity of pure solid NaC1 and of the 1.0 M NaC1 soulution

Basile [38]

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4 years ago

Which argument best explains the charge of an atomic nucleus?

xeze [42]

The answer is "An atomic nucleus is positively charged because it is composed of protons". An atomic nucleus actually contains nucleons which are made up of both protons and neutrons. Since neutrons are neutral or have no charge, the charge of an atomic nucleus mainly relies on the positive charge of the protons.

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3 years ago

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How many grams of LiOH are produced from 9.89 g of Li?

Nonamiya [84]

Taking into account the stoichiometry of the reaction, 34.12 grams of LiOH are produced from 9.89 g of Li.

In first place, the balanced reaction is:

2 Li + 2 H₂O ⇒ 2 LiOH + H₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

Li= 2 moles
H₂O= 2 moles
LiOH= 2 moles
H₂= 1 mole

The molar mass of each compound is:

Li= 6.94 g/mole
H₂O= 18 g/mole
LiOH= 23.94 g/mole
H₂= 2 g/mole

By reaction stoichiometry, the following amounts of mass of each compound participate in the reaction:

Li= 2 moles× 6.94 g/mole= 13.88 g
H₂O= 2 moles× 18 g/mole= 36 g
LiOH= 2 moles× 23.94 g/mole= 47.88 g
H₂= 1 mole× 2 g/mole= 2 g

Then you can apply the following rule of three: if by reaction stoichiometry 13.88 g of Li produce 47.88 g of LiOH, 9.89 g of Li produce how much mass of LiOH?

$mass of LiOH=\frac{9.89 g of Li*47.88 g of LiOH}{13.88 f of Li}$

Solving:

mass of LiOH= 34.12 grams

Finalli, 34.12 grams of LiOH are produced from 9.89 g of Li.

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3 years ago