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Len [333]
3 years ago
13

Antibiotic-resistant bacteria have an enzyme, penicillinase, that catalyzes the decomposition of the antibiotic. The molecular m

ass of penicillinase is 31200 g/mol. The turnover number of the enzyme at 28 °C is 2.00 × 103 s–1. If 4.10 μg of penicillinase catalyzes the destruction of 2.83 mg of amoxicillin, an antibiotic with a molecular mass of 364 g/mol, in 29.6 seconds at 28 °C, how many active sites does the enzyme have? Assume that the enzyme is fully saturated under the conditions described above.
Chemistry
1 answer:
arsen [322]3 years ago
3 0

Answer:

The number of  active sites enzyme have is 1.

Explanation:

Mass of penicillinase = 4.10 μg =4.10\times 10^{-6} g

1 g = 1000000 μg

The turnover number of the enzyme at 28 °C = 2.00\times 10^3 s^{-1}

Moles of penicillinase =

\frac{4.10\times 10^{-6} g}{31200 g/mol}=1.31410\times 10^{-10} mol

Mass of antiboitic-amoxicillin =2.83 mg =2.83\times 10^{-3} g

Moles of amoxicillin =

\frac{2.83\times 10^{-3} g}{364 g/mol}=7.7747\times 10^{-6} mol

Moles of reactant which are converted into product per second:

1.31410\times 10^{-10} mol\times 2.00\times 10^3 s^{-1}

=2.6282\times 10^{-7} mol/s

Moles of product converted in 29.6 seconds:

2.6282\times 10^{-7} mol/s\times 29.6 s=7.779472\times 10^{-6} mol

Number of sites:

=\frac{\text{moles of product}}{\text{moles of reactant}}

=\frac{7.779472\times 10^{-6} mol}{7.7747\times 10^{-6} mol}=1.00

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Answer:

0.73 mol

Explanation:

No. of moles(n)= Given mass/molar mass.

Given mass=124.7g

Molar mass of Ba(OH)2= Molar mass of (Barium+2Oxygen+2Hydrogen)=137+32+2=171g

No. of moles= 124.7g/171g=0.73 mol

7 0
3 years ago
Assuming that the smallest measurable wavelength in an experiment is 0.730 fm (femtometers), what is the maximum mass of an obje
Archy [21]
<span>1 fm = 1.0 × 10-15 meters 
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0.610<span>  fm x (1.0x10^-15 m / 1 fm)
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<span>m = (6.626*10^-34)/(6.1*10^-16*199)
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6 0
4 years ago
Describing Chemical Reactions
nadya68 [22]

Answer:

mass of Liquid 1 + mass of Liquid 2 = mass of solid + mass of gas

Explanation:

iquid 1 reacts with Liquid 2, producing a solid and a gas. Using this scenario, which supports the law of conservation

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O mass of Liquid 1 + mass of solid = mass of Liquid 2 + mass of gas

O mass of Liquid 1 - mass of solid = mass of Liquid 2-mass of gas

O mass of Liquid 1 - mass of Liquid 2 = mass of solid + mass of gas

O

based on the law of the conservation of matter, the sum of the masses of the reactants must equal  the sum of the masses of the products

so the correct answer is

mass of Liquid 1 + mass of Liquid 2 = mass of solid + mass of gas

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6 0
3 years ago
The following equation describes how sodium and chlorine react to produce sodium chloride: 2Na + Cl2 -&gt; 2NaCl Is the equation
DedPeter [7]

Answer:

The equation shows balance.

Explanation:

You can easily count the number of elements on each side.

On the left side of the equation, you have 2 moles of Na and 2 moles of Cl.

On the right side of the equation, you also have 2 moles of Na and 2 moles of Cl because the two elements formed a compound meaning that whatever number is in front of them, both elements will receive the same number.

5 0
4 years ago
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