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3 years ago

Which medieval structural innovation resulted in the wide aisles and high vaulted ceilings of Notre-Dame de Chartres?

Chemistry

1 answer:

mixas84 [53]3 years ago

5 0

Answer:

Gothic art began mainly in the place called Alta Picardia, where these structures transmitted royalty.

In addition, the large number of paleochristian structures made it innovate with Gothic art. The first historical landmarks of Gothic art were the basilica of Saint-Denis and the cathedral of Saint Etienne de Sens

Explanation:

it should be noted that there were many stages of gothic art that some occurred simultaneously, where they were called preclassic gothic art, classical, radiant and late or flamboyant gothic art.

This type of art attracted a very high class in France accompanied by a socio-economic, cultural and agricultural growth in Paris and mainly in Picardy, which is where it first appeared

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A rigid tank contains 0.66 mol of oxygen (O2). Find the mass of oxygen that must be withdrawn from the tank to lower the pressur

dsp73

Answer:

12.8 g of $O_{2}$ must be withdrawn from tank

Explanation:

Let's assume $O_{2}$ gas inside tank behaves ideally.

According to ideal gas equation- $PV=nRT$

where P is pressure of $O_{2}$ , V is volume of $O_{2}$ , n is number of moles of $O_{2}$ , R is gas constant and T is temperature in kelvin scale.

We can also write, $\frac{V}{RT}=\frac{n}{P}$

Here V, T and R are constants.

So, $\frac{n}{P}$ ratio will also be constant before and after removal of $O_{2}$ from tank

Hence, $\frac{n_{before}}{P_{before}}=\frac{n_{after}}{P_{after}}$

Here, $\frac{n_{before}}{P_{before}}=\frac{0.66mol}{43atm}$ and $P_{after}=17atm$

So, $n_{after}=\frac{n_{before}}{P_{before}}\times P_{after}=\frac{0.66mol}{43atm}\times 17atm=0.26mol$

So, moles of $O_{2}$ must be withdrawn = (0.66 - 0.26) mol = 0.40 mol

Molar mass of $O_{2}$ = 32 g/mol

So, mass of $O_{2}$ must be withdrawn = $(32\times 0.40)g=12.8g$

7 0

3 years ago

How many Grams of NO is produced if 12g of O2 is combined with excess ammonia?

stich3 [128]

Answer:

Explanation:

moles O2 = mass / Mr = 12 / 2(16.0) = 0.375

ratio O2 : NO = 5:4

moles NO produced = 0.375 * 4/5 = 0.3

mass NO = Mr * mol = (14.0+16.0) * 0.3 = 9g

5 0

3 years ago

Pls help i will mark you the brainlest

kap26 [50]

Answer:

Maintain constant velocity

8 0

3 years ago

Which describes a scenario in which the Doppler effect is occurring?

s2008m [1.1K]

The correct answer is option B, that is, the pitch changes from low to high.

The Doppler shift or the Doppler Effect refers to the variation in the wavelength or frequency of a wave in association with an observer who is traveling comparative to the source of the wave. A prime illustration of Doppler shift is the modification of the pitch heard when a vehicle sounding a horn comes towards and move away from an observer.

In comparison to the frequency emitted, the obtained frequency is greater at the time of approach, similar at the instant of passing by, and lower at the time of recession.

8 0

3 years ago

Read 2 more answers

Make the equation equal<br> Fe(NO3)3+KSCN —> Fe(SCN)3 + K(NO3)3

Advocard [28]

Answer:

Fe(NO₃)₃ + 3KSCN → Fe(SCN)₃ + 3KNO₃

Explanation:

Chemical equation:

Fe(NO₃)₃ + KSCN → Fe(SCN)₃ + KNO₃

Balanced Chemical equation:

Fe(NO₃)₃ + 3KSCN → Fe(SCN)₃ + 3KNO₃

Type of reaction:

It is double displacement reaction.

In this reaction the anion or cation of both reactants exchange with each other. In given reaction the cation Fe⁺³ exchange with cation K⁺.

The given reaction equation is balanced so there are equal number of atoms of each elements are present on both side of equation and completely hold the law of conservation of mass.

Double replacement:

It is the reaction in which two compound exchange their ions and form new compounds.

AB + CD → AC +BD

5 0

3 years ago