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3 years ago

Molecules containing a large number of hydroxyl groups are

1 answer:

6 0

Molecules containing a large number of hydroxyl groups are soluble in water. Molecules which contains the functional group hydroxyl or -OH are called alcohols. Water and alcohols share some similar properties. One would be its polar properties. Alcohols are polar molecules as they contain a partial positive and partial negative end. Making them to be miscible in water. The hydroxyl groups in alcohol are capable of forming hydrogen bonds with the water molecules and with other alcohols. As the number of the hydroxyl groups increases, the polarity of the molecule would also increase making it more soluble in water.

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Identify the reactants and products in a chemical reaction

rewona [7]

For example-->

water and carbon dioxide and sunlight --> glucose and oxygen
(reactants) ---> (products)

3 0

3 years ago

Is acid rain exothermic or endothermic?

trasher [3.6K]

Answer:

in the presence of water, a strong acid will dissociate quickly and release heat, so it is an exothermic reaction.

Explanation:

7 0

3 years ago

What is the maximum mass of zinc oxide that can be produced by the reaction of 42.900000000000006g of zinc sulfide and 44.187000

Masja [62]

Answer:

Mass = 0.00541 g

Explanation:

We will convert the larger given values in to smaller by rounding these figures.

Given data:

Mass of zinc sulfide = 43 g

Mass of oxygen = 44.2 g

Mass of zinc oxide = ?

Solution:

Chemical equation:

2ZnS + 3O₂ → 2ZnO + 3SO₂

Number of moles of ZnS:

Number of moles = mass/ molar mass

Number of moles = 43 g/ 97.5 g/mol

Number of moles = 0.44 mol

Number of moles of Oxygen:

Number of moles = mass/ molar mass

Number of moles = 44.2 g/ 32 g/mol

Number of moles = 1.4 mol

Now we will compare the moles of oxygen and zinc sulfide with zinc oxide.

ZnS : ZnO

2 : 2

0.44 : 0.44

O₂ : ZnO

3 : 2

1.4 : 2/3×1.4 =0.93

The number of moles of zinc oxide produced by ZnS are less so it will limiting reactant.

Mass of zinc oxide:

Mass = number of moles / molar mass

Mass = 0.44 mol / 81.38 g/mol

Mass = 0.00541 g

5 0

3 years ago

How many grams of iron (3)sulfide are produced when 131 grams of iron react with excess sulfur?

Tomtit [17]

We want the molar mass (gfm) of Fe and FeS.

Fe = 55.8 g/mol and FeS = 87.8 g/mol (55.8 +32.0).

Explanation:

We want ratio between Fe:FeS 8:8. This comes from the coefficients of the equal chemical equation.

Now we set up conversion factors following the roadmap from above.

Unit we want in the numerator, unit to cancel in the denominator.

Multiply the numerators, and divide the denominators.

$(131.0)gFe \times 1molFe/(55.8)gFe \times 8molFeS/8molFe \times 87.8gFes/1molFes$

$243.82 g \ of Fe_2S_3$

The outcome is 243.82 g of ferrous sulphite

By the above given formula we can find any amount of Fes produced by any amount of ferrous react with sulphite.

4 0

4 years ago

Read 2 more answers

Based on reactivity, which of the following elements can replace aluminum (Al) in a compound during a single replacement reactio

DaniilM [7]

The answer is C. You are correct

7 0

3 years ago