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AysviL [449]
3 years ago
10

Which action is necessary for a solar eclipse to occur?​

Chemistry
1 answer:
Nat2105 [25]3 years ago
6 0

Answer:

Moon has to be in-between the Earth and the Sun.

2. Moon's umbra should sweep your place.

3. Latitude and longitude of your place should be within the befitting limits.

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A 3.31-g sample of lead nitrate, Pb(NO3)2, molar mass = 331 g/mol, is heated in an evacuated cylinder with a volume of 2.53 L. T
Dahasolnce [82]

Answer:

0.486atm is the pressure of the cylinder

Explanation:

1 mole of Pb(NO₃)₂ descomposes in 4 moles of NO2 and 1 mole of O2. That is 1 mole descomposes in 5 moles of gas.

To find the pressure of the cylinder, we need to find moles of gas produced, and using general gas law we can determine the pressure of the gas:

<em>Moles Pb(NO₃)₂ and moles of gas:</em>

3.31g * (1mol / 331g) = 0.01 moles of Pb(NO₃)₂.

That means moles of gas produced is 0.05 moles.

<em>Pressure of the gas:</em>

Using PV = nRT

P = nRT/V

<em>Where P is pressure (Incognite)</em>

<em>V is volume (2.53L)</em>

<em>R is gas constant (0.082atmL/molK)</em>

<em>T is absolute temperature (300K)</em>

And n are moles of gas (0.05 moles)

P = 0.05mol*0.082atmL/molK*300K / 2.53L

P = 0.486atm is the pressure of the cylinder

3 0
3 years ago
What did Rutherford’s gold foil experiment indicate?
Klio2033 [76]
The answer would be D. 
4 0
3 years ago
Jupiter’s moon Io was discovered to have high concentrations of sulfur oxides in its atmosphere. This, in combination with resea
deff fn [24]

Answer:

S₂O₂  

Explanation:

The multiplying prefix di- means "two."

Thus, a molecule of disulfur dioxide has two atoms of sulfur and two atoms of oxygen.

The formula is S₂O₂.

4 0
3 years ago
All of the following are solutions except?
Vaselesa [24]

Answer:

fruit cake is the right ans

5 0
3 years ago
Read 2 more answers
What is one source of CO?
Murljashka [212]

Answer:

Carbon monoxide (CO)—a colorless, odorless, tasteless, and toxic air pollutant—is produced in the incomplete combustion of carbon-containing fuels, such as gasoline, natural gas, oil, coal, and wood. The largest anthropogenic source of CO in the United States is vehicle emissions.

Explanation:

Hope this helps- good Luck! ^w

5 0
3 years ago
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