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3 years ago

Does sound travel faster in a warm room or a cold room? Explain your answer.

Chemistry

2 answers:

aliya0001 [1]3 years ago

7 0

Answer:

Warm Room

Explanation:

Let's establish two things first.

Sound is a form of energy.
Waves are made by the oscillation (up, down and sideways movement) of partials. When partials oscillate, they transfer energy by bumping into each other.

Sound wave are waves that are created by the oscillation of air particles and carry sound energy from point A to point B.

In a warm room, the air particles have higher energy compared to a cold room. Hence, they bump into each other more frequently. 

This allow them to transfer the sound energy quickly and easily from one partial to another.

Hence, sound travels faster in warm room then in cold room.

RUDIKE [14]3 years ago

4 0

Answer:

Explanation:

Sound travels outwards from the source in all directions. So there you have it sound does travel faster in warm air BUT it may appear to travel farther in cold air. This is how that works……if the air close to the ground is colder than the air above it then sound waves travelling upwards will be bent downwards.

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A metabolic pathway that ___ (oxidizes or reduces) an energy-rich source to produce ATP from ADP. Electrons are transferred from

OlgaM077 [116]

Answer:

see explaination

Explanation:

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Oxidation reactions are exergonic and can be coupled to produce ATP from ADP + Pi

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Electrons are moved from compounds with low reduction potential to compounds with high reduction potential.

3. As electrons move through the electron transport chain, ETC, the energy in the electron is used to pump PROTONS across a membrane.

In respiration, protons are pumped from the mitochondrial matrix to the perimitochondrial space.

4. The pumping of these molecules against their concentration gradient is a form of FACILITATED transport.

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3 years ago

Read 2 more answers

What chemical property must argon have to make it a suitable choice for light bulbs?

Sedbober [7]

Argon is a suitable choice for light bulbs because it is inert. Compared to a reactive gas like oxygen, the metal filimant would burn up in a reactive environment, which is why a noble gas is used.

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3 years ago

14. An enzyme-catalyzed reaction was carried out with the substrate concentration initially a thousand times greater than the Km

emmainna [20.7K]

Answer:

27 min

Explanation:

The kinetics of an enzyme-catalyzed reaction can be determined by the equation of Michaelis-Menten:

$v = \frac{vmax[S]}{Km + [S]}$

Where v is the velocity in the equilibrium, vmax is the maximum velocity of the reaction (which is directed proportionally of the amount of the enzyme), Km is the equilibrium constant and [S] is the concentration of the substrate.

So, initially, the velocity of the formation of the substrate is 12μmol/9min = 1.33 μmol/min

If Km is a thousand times smaller then [S], then

v = vmax[S]/[S]

v = vmax

vmax = 1.33 μmol/min

For the new experiment, with one-third of the enzyme, the maximum velocity must be one third too, so:

vmax = 1.33/3 = 0.443 μmol/min

Km will still be much smaller then [S], so

v = vmax

v = 0.443 μmol/min

For 12 μmol formed:

0.443 = 12/t

t = 12/0.443

t = 27 min

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3 years ago

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erastovalidia [21]

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PtichkaEL [24]

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