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3 years ago

All of the following are true regarding alcoholic fermentation, except that alcoholic fermentation

Chemistry

1 answer:

guapka [62]3 years ago

4 0

<span>A. produces as much energy as cell respiration.</span>

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An organic acid was analyzed and the following percent composition was obtained: 68.85% carbon, 4.9% hydrogen, and 26.2% oxygen.

rewona [7]

Answer:

The molecular formula of the compound is: C14H12O4

Explanation:

Step 1: find molality

ΔT = Kf x m

ΔT = Tfinal - Tinitial = 3.37 - 5.50 = -2.13

molality (m) = ΔT/Kf = -2.13/-5.12 = 0.416 m

step 2: find number of moles

m = number of moles (n)/Kg solvent which is the benzene

n = molality x Kg solvent = 0.416 molality X (10 x 10^-3 Kg) = 0.00416 mole

Step 3: find molecular mass of the organic compound

n = mass/Molecular mass = m/Mm

Mm = m/n = 1.02/0.00416 = 245.19 g/mole of organic compound molecular formula

Step 4: find number of mole of each compound

let consider it being in 100g where each % will correspond to the mass of the element in 100g of the compound.

C = mass/molar mass = 68.85/12.01 = 5.7327 mole

H = mass/molar mass = 4.9/1.01 = 4.8515 mole

O = mass/molar mass = 26.2/16 = 1.6375 mole

Step 5: divide by smallest number of mole

C = 5.7327/1.6375 = 3.5 = 7/2

H = 4.8515/1.6375 = 3

O = 1.6375/1.6375 = 1

C7/2H3O1

multiply by two to remove the fraction: C7H6O2 in which the empirical molecular mass = 122.13 g/mole

to find the factor for the molecular formula x = Mm of molecular/Mm of empirical = 245.19/122.13 = 2

Multiply the empirical by 2 = 2 x (C7H6O2) = C14H12O4

8 0

4 years ago

What kind of waves have more energy than others?

jeyben [28]

Answer:

Gamma ray

Explanation:

Radio waves have low energy photons, microwave photons have a little more energy than the radio waves, infrared photons have more energy than the microwave, then visible, ultraviolet, X-rays, and, the most energetic of all is the gamma-rays

7 0

4 years ago

To achieve a complete set of valence electrons, atoms must fulfill the octet rule. What must atoms do to obey this rule?

jekas [21]

Either give off or gain electrons to make a total of 8

5 0

3 years ago

What does temperature measure?

nadya68 [22]

Average kinetic energy of the particles in the object

8 0

4 years ago

Read 2 more answers

An endergonic reaction refers to a chemical reaction in which: Energy is being released as the reaction proceeds • Energy is bei

Karolina [17]

Answer: Energy is being absorbed as the reaction proceeds

Explanation:

Endergonic reactions are defined as the reactions in which energy of the product is greater than the energy of the reactants. The total energy is absorbed in the form of heat and $\Delta H$ for the reaction comes out to be positive.

Exergonic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat and $\Delta H$ for the reaction comes out to be negative.

Thus an endergonic reaction refers to a chemical reaction in which Energy is being absorbed as the reaction proceeds.

5 0

3 years ago