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kobusy [5.1K]
1 year ago
10

Which of these pairs indicates an incorrect coupling of reversible reactions?dehydration synthesis and hydrolysisanabolic and ca

tabolichydrolysis and breakdownbreakdown and synthesis
Chemistry
1 answer:
Olegator [25]1 year ago
8 0

Answer:

option C= hydrolysis and break down

Explanation:

All other three pairs are correct coupling of each others.

Option A= dehydration synthesis and hydrolysis

Dehydration synthesis:

In dehydration synthesis monomers combine through the covalent bonds and form large molecules. The large molecules are called polymers. The water as a byproduct also released when monomers joints together.

Hydrolysis:

In hydrolysis the polymers are break down into monomers by using water molecules. The catalysts are also required in this process.

Option B= Catabolic and Anabolic

Anabolic:

In this process smaller molecules combine to gather to form large complex molecules by using energy.

For example simple glucose molecules join together to form large disaccharides.

Catabolic:

It is the break down of large complex molecules to the smaller molecules.

For example during cellular respiration sugar molecules break down and generate energy.

Option D=  Break down and synthesis

The break down and synthesis are also reverse pair of each others. The  synthesis involve the formation of molecules form smaller component while the break down involve destruction of molecules into smaller units.

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How many chloride ions are in a 220 grams of calcium chloride?
fomenos
The Ions present in CaCl₂ are,

                                                 Ca²⁺    Cl⁻     Cl⁻

Means 1 formula unit contains 1 Ca²⁺ ion and 2 Cl⁻ ions.

Also, 1 mole of CaCl₂ contains 6.022 × 10²³ formula units.

So, 1 mole formula units of CaCl₂ contain,

                                            2 × 6.022 × 10²³  =  1.20 × 10²⁴ Cl⁻ Ions

Now, Calculating number of moles contained by 220 g of CaCl₂,
As,
                               110.98 g of CaCl₂  =  1 mole
Then, 
                                    220 g of CaCl₂  =  X moles
Solving for X,
                                                 X  =  (220 g × 1 mol) ÷ 110.98 g

                                                 X  =  1.98 moles
As,
                           1 mole contained  =  1.20 × 10²⁴ Cl⁻ Ions
Then,
                    1.98 mole will contain  =  X Cl⁻ Ions
Solving for X,
                                                  X  =  (1.98 mol × 1.20 × 10²⁴ Ions) ÷ 1mol

                                                  X  =  2.38 × 10²⁴ Cl⁻ Ions
6 0
1 year ago
Read 2 more answers
In an experiment, calcium carbonate reacted with different volumes of hydrochloric acid in water. One of the products formed dur
Arte-miy333 [17]

Answer:

12.8seconds, 14.6seconds, 16.4seconds

Explanation:

the answers should b right as long as it is increasing in trend.

the reason why is bc of lower vol of hcl, and higher vol of water present. there is amount of hcl molecules present per volume. lesser chance of collisions, lower rate of successful collisions to poduce CO2

5 0
2 years ago
) Starting with 5.00 g barium chloride n hydrate yields 4.26 g of anhydrous barium chloride after heating. Determine the integer
RSB [31]

Answer:

2

Explanation:

Mass of water molecule = mass of hydrated salt - mass of anhydrous salt

Mass of water molecule = 5.00 - 4.26 = 0.74g of water molecule.

Number of moles = mass / molarmass

Molar mass of water = 18.015g/mol

No. of moles of water = 0.74 / 18.015 = 0.0411 moles.

Mass of BaCl2 present =?

1 mole of BaCl2 = 208.23 g

X mole of BaCl2 = 4.26 g

X = (4.26 * 1) / 208.23

X = 0.020

0.020 moles is present in 4.26g of BaCl2

Mole ratio between water and BaCl2 =

0.0411 / 0.020 = 2

Therefore 2 molecules of water is present the hydrated salt.

4 0
2 years ago
Which statement BEST describes how a golf club does "work" on a golf ball?
garri49 [273]

Answer:

C

Explanation:

It looks pretty reasonable to me

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1 year ago
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spin [16.1K]

Answer:

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Explanation:

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