Does CH3F have a higher boiling point than BRF?

Analyses of enzymes found in the blood are used as indicators that tissue damage (heart, liver, muscle) has occurred and resulte

iren [92.7K]

Answer:

Lactate dehydrogenase (LDH)

Explanation:

LDH is tetrameric enzyme found in the muscles (M-type) and the heart (H-type) of living cells, responsible for the conversion of pyruvate to lactate and back, to promote generation of nicotinamide adenine dinucleotide (NAD).

3 0

4 years ago

Draw a structure for a compound that meets the following description: An optically active compound, C5H10O with an IR absorption

Elenna [48]

Question: A optically active compound, C5H10O, exhibits IR absorption at 1730 cm-1.

Its carbon NMR shifts are given below. The number of hydrogen's at each carbon, determined by DEPT, is given in parentheses after the chemical shift.

13C NMR: δ 22.6 (3), 23.6 (1), 52.8 (2), 202.4 (1)

Draw the structure of this compound in the window below

Explanation:

3-methylbutanal is a butanal substituted by the methyl group at the 3rd position. It is a volatile constituent in the olive. Also, it is used as a flavoring agent and a plant metabolite, it is also a Saccharomyces cerevisiae metabolite. It is also called as the Isovaleraldehyde organic compound. The liquid is colorless at STP, and also found in very low concentrations. It is also seen to be produced commercially for different use. Mostly used compound reagent in the preparation of pharmaceuticals and pesticides.

5 0

4 years ago

Pyridine, C5H5N, is a bad-smelling liquid that is a weak base in water. Its pKb is 8.77. What is the pH of a 0.20 M aqueous solu

kari74 [83]

Answer:

pH = 9.26

Explanation:

Let's make the reaction of this weak base:

C₅H₅N + H₂O ⇄ C₅H₅NH⁺ + OH⁻ Kb

We do not know the Kb, but we can discover it from pKb

Kb = 10^⁻pKb → 10⁻⁸'⁷⁷ = 1.70×10⁻⁹

So, let's make the expression for Kb

Kb = [OH⁻] . [C₅H₅NH⁺] / [C₅H₅N]

In the equilibrum, we would have 0.20 moles from the begining - x (react)

So we would proudce x moles of OH⁻ and x moles of C₅H₅NH⁺.

In conclussion:

1.70×10⁻⁹ = x . x / (0.20 - x)

To avoid the quadratic formula we can miss the x from the substraction

1.70×10⁻⁹ = x² / 0.20

1.70×10⁻⁹ . 0.20 = x²

We avoid the x from the (0.20-x), because the base is so concentrated, and Kb is very small.

x = √(1.70×10⁻⁹ . 0.20) → 1.84×10⁻⁵

That's the value of [OH⁻], so we can calculate pOH

- log [OH⁻] = pOH → - log 1.84×10⁻⁵ = 4.73

Then pH = 14 - pOH

14 - 4.73 = 9.26

4 0

4 years ago

If the temperature decreases, then the pressure will

Sergeu [11.5K]

Then the temperature decreases.

3 0

3 years ago

29. Name the different components of disaster management.

ioda

Answer:

Shinkansen this a bullet train are very high speed trains in Japan. The disaster was nearly saved to occur with legitimate and successful administration. On 11 December, a split was found in a train which was around 14 cm long. It is said that had it been 17 cm, the train could have been crashed and along these lines the calamity didn't happen just by 3 cm.

It was a five hour journey meanwhile a intern who was selling something seen an odd smell and conversed with the conductor about it. At long last it was explored and they additionally saw a bizarre sound at a station while boarding. at the point when the architects explored, they chose to proceed with the voyage saying everything is ordinary. At last the train halted at Nagoya station where the break was watched obviously. It additionally had sensors that could identify it

In spite of the fact that they halted before the break could turn out to be huge, if wrecking had happened, it could have caused gigantic devastation. Till now, the makers asserted that slug trains have zero percent plausibility to confront any mishap however this episode opened the eyes of all.

Explanation:

3 0

3 years ago