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3 years ago

Explain in five sentence how a decrease in pressure affects the system below at equilibrium 2NO2(g)=N2O4(g)

Chemistry

1 answer:

irakobra [83]3 years ago

3 0

Answer:

See the answer below

Explanation:

A decrease in pressure would see a shift in the equilibrium to the left-hand side of the equation.

According to a particular chemical principle, a system in equilibrium that has one of the constraints affecting reactions applied or removed would experience a change in the equilibrium position so as to annul the effects of the application/removal of the constraint.

In this case, 2 moles of NO2 is present on the left-hand side as opposed to 1 mole of N2O4 on the right-hand side. A decrease in pressure will create more space for the formation of NO2 on the left-hand side. Thus, the equilibrium will shift a bit to this side so as to annul the effects of the decrease in pressure.

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b. Describe how the temperature changes within a phase and during a phase change as heat is added to a water sample. (2 points)

Rudik [331]

Hello!

Take for example the heating of water.

When heating liquid water from room temperature (25 °C) to the boiling point (100 °C), adding heat results in a direct increase in the temperature. This kind of heat is called sensible heat, because we can sense the effect of the added energy.

But when you reach 100 °C, there is a phase change from liquid to vapour, and the added heat is used to produce the phase change, and no increase in temperature is observed, only the phase change. This kind of heat is called latent heat.

Have a nice day!

6 0

3 years ago

Which object will have the most kinetic energy?

professor190 [17]

Answer:

Semi-track

Explanation:

It has more mass so,more KE.

4 0

3 years ago

An enzyme is discovered that catalyzes the chemical reaction:SAD -------->HAPPY

jekas [21]

Answer: Km = 10μM

Explanation: Michaelis-Menten constant (Km) measures the affinity a enzyme has to its substrate, so it can be known how well an enzyme is suited to the substrate being used. To determine Km another value associated to an eznyme is important: Turnover number (Kcat), which is the number of time an enzyme site converts substrate into product per unit time.

Enzyme veolcity is calculated as:

$V_{0} = \frac{E_{t}.K_{cat}.[substrate]}{K_{m}+[substrate]}$

where Et is concentration of enzyme catalitic sites and has to have the same unit as velocity of enzyme, so Et = 20nM = 0.02μM;

To calculate Km:

$V_{0}*K_{m} + V_{0}*[substrate] = E_{t}.K_{cat}.[substrate]$

$K_{m} = \frac{E_{t}.K_{cat}.[substrate]-V_{0}*[substrate]}{V_{0}}$

$K_{m} = \frac{0.02*600*40-9.6*40}{9.6}$

Km = 10μM

The Michaelis-Menten for the substrate SAD is 10μM.

3 0

3 years ago

4. If the DNA nitrogen bases were TACCGGAT, how would the other half of

Illusion [34]

Answer:

ATGGCCTA

Explanation:

For this we have to keep in mind that we have a specific relationship between the nitrogen bases:

-) When we have a T (thymine) we will have a bond with A (adenine) and viceversa.

-) When we have C (Cytosine) we will have a bond with G (Guanine) and viceversa.

Therefore if we have: TACCGGAT. We have to put the corresponding nitrogen base, so:

TACCGGAT

ATGGCCTA

I hope it helps!

3 0

3 years ago

Make a list of 5 metals and 5 non metals and their real life application and any additional information about

svetoff [14.1K]

Answer:

Metals:

Copper: to make cooking utensils such as pots because it has a high heat conductivity.

Aluminium: to make aluminium foil / soda cans because it is malleable

Mercury: fills up thermometers because it can indicate the temperature when it expands. But it is toxic so fewer people are using mercury thermometers now.

Titanium: to make the body of supersonic aircrafts because it is strong and corrosion resistant

Gold: to make jewelry because it is shiny and also corrosion resistant

Non-metals:

Nitrogen: to fill up chip packages because its molecules are unreactive

Helium: to fill up balloons because it is lightweight

Hydrogen: for generating electricity in hydrogen fuel cells. It is environmentally-friendly because it does not produce any greenhouse gas or toxic pollutants.

Fluorine: added in toothpaste for strengthening the teeth. It can also prevent cavities.

Carbon: the graphite in pencils. this is one form of carbon. Other common forms (allotropes) of carbon include diamond and Buckminsterfullerene (buckyball).

6 0

4 years ago