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2 years ago

6

How do enzymes function in biological reactions?

1 answer:

Blababa [14]2 years ago

3 0

Answer:

it binds molecules like a chemical bond-breaking

Explanation:

Enzymes perform the critical task of lowering a reaction's activation energy—that is, the amount of energy that must be put in for the reaction to begin. Enzymes work by binding to reactant molecules and holding them in such a way that the chemical bond-breaking and bond-forming processes take place more readily.

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___AIBr3+__K-->__KBr+__AI

Amiraneli [1.4K]

1AlBr3+ 3K ---> 3KBr + 1Al

7 0

2 years ago

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. In

Scorpion4ik [409]

Answer:

The net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide is -470.4 kJ/mol.

Explanation:

Step 1 : Calcium carbide and water react to form acetylene and calcium hydroxide

$CaC_2(s)+2H_2O(g)\rightarrow$

$C_2H_2(g)+Ca(OH)_2(s),\Delta H_1=-414 kJ$ ..[1]

Step 2 : Acetylene, carbon dioxide and water react to form acrylic acid

$6C_2H_2(g)+3CO_2(g)+4H_2O(g)\rightarrow 5CH_2CHCOOH(g),\Delta H_2=132 kJ$ ..[2]

Using Hess's law:

[1] × 6 + [2]

$6CaC_2(s)+16H_2O(g)+3CO_2\rightarrow 5CH_2CHCOOH(g)+6Ca(OH)_2(s),\Delta H_3=?$

$\Delta H_3=6\times \Delta H_1+\Delta H_2$

$\Delta H_3=6\times (-414 kJ)+132 kJ=-2352 kJ$

The energy released on formation of 5 moles of acrylic acid = -2352 kJ

The energy released on formation of 1 moles of acrylic acid :

$=\frac{-2352 kJ}{5 mol}=-470.4 kJ/mol$

Hence, the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide is -470.4 kJ/mol.

5 0

2 years ago

What is the missing part of the chemical equation shown below? acid + base ? salt + ________

Gennadij [26K]

Water is the answer.

5 0

3 years ago

Read 2 more answers

Each molecule of testosterone contains 19 atoms of carbon (plus other atoms). The mass percent of carbon in testosterone is 79.1

Xelga [282]

Answer:

The answer to your question is letter E. 288.4 g/mol

Explanation:

Data

Number of carbons = 19

mass percent of carbon = 79.12

molar mass = ?

Process

1.- Calculate the molar mass of 19 atoms of carbon

Atomic mass of carbon = 12 g

Atomic mass of 19 atoms of carbon = 228 g

2.- Use proportions to calculate the mass of testosterone

228 g --------------- 79.12 %

x -------------- 100 %

x = (228 x 100) / 79.12

Simplify

x = 22800 / 79.12

Molar mass of testosterone = 288.2 g

6 0

2 years ago

What is mineral called that contains usable amounts of an element

ivolga24 [154]

I'm just guessing
Many oil

7 0

2 years ago

Read 2 more answers