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2 years ago

Any four limitations of chemical reaction

Chemistry

1 answer:

strojnjashka [21]2 years ago

7 0

Answer:

1.It does not tells us whether a reaction proceeded completely or not.Like in some reactions some of the reactants remains unreacted and the chemical equation of this reaction doesn't tells us about it.

2.Chemical equations does not tells us/indicate the speed of reaction.I doesn't tell us how fast or how slow the reaction was.

3.It does not tells us about the physical changes like colour,state.So we have to mention it seperately.

4.It does not tell us about through which method the reaction proceeded.

5.Also in chemical reactions many intermediates are formed for a small amount of time.These are not expressed in a chemical equation...

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Please help! will give brainliest!!

Varvara68 [4.7K]

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2 years ago

An analytical chemist has determined by measurements that there are 8.5 moles of magnesium in a sample of talc. How many moles o

MrRissso [65]

There are 5.66 moles of hydrogen in the sample of talc(hydrated magnesium silicate).

Given,

Talc formula is $Mg_{3} Si_4O_{10} (OH)_2$

moles of magnesium = 8.5 moles

The stoichiometry of magnesium and hydrogen is 3 : 2,

So 3 moles of magnesium is equivalent to 2 moles of hydrogen.

Then 8.5 moles of magnesium is equivalent to $\frac{2}{3} *8.5$ =5.6666 moles

Talc(hydrated magnesium silicate), often known as talcum, is a type of clay mineral made up of hydrated magnesium silicate, having the formula Mg3Si4O10(OH)2. Baby powder is made of powdered talc, frequently mixed with corn starch. This mineral serves as a lubricant and thickening agent. It serves as a component in paint, pottery, and roofing materials. It serves as a key component in many cosmetics. It can be found as foliated to fibrous aggregates and in a remarkably uncommon crystal form. It is foliated with a two-dimensional platy form, has a flawless basal cleavage, and an irregular flat fracture.

Talc(hydrated magnesium silicate), the softest mineral, is assigned a value of 1 on the Mohs scale of mineral hardness, which is based on scratch hardness comparisons.

Learn more about Talc here:

brainly.com/question/24082743

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1 year ago

Two atoms that are isotopes of one another must have the same number of what?

erastovalidia [21]

They must have the same number of protons

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2 years ago

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Magnetism, or more specifically electromagnetic repulsion

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3 years ago

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Calculate the volume of carbon dioxide and water vapour produced and the volume of oxygen remaining, when 20.0 dm3 of propane re

laiz [17]

Answer:

80cm3 of water, and 60cm3 carbon IV oxide is formed while 20cm3 of oxygen is left unreacted.

Explanation:

From Gay-Lussac's law, there are five volumes of oxygen, 1 volume if propane, 4 volumes of water and three volumes of CO2. Applying this shows the reacting volumes as we have in the image attached, hence the volumes left after reaction.

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3 years ago

Any four limitations of chemical reaction​

Any four limitations of chemical reaction