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lord [1]
3 years ago
6

For each system listed in first column of the table below, decide (if possible) whether the change described in the second colum

n will increase the entropy For each system listed in first column of the tabl of the system, decrease For each system listed in first column of the tabl , or leave unchanged. If you don't have enough information to decide, check the "not enough information" button in the last column.SystemChange?SA few moles of nitrogen (N2) gas.The nitrogen is compressed from a volume of to a volume of while the temperature is held constant at <?S0=?S0>?S0not enough informationA few grams of liquid acetone ((CH3)2CO).The acetone evaporates at a constant temperature of <?S0=?S0>?S0not enough informationA few moles of nitrogen (N2) gas.The nitrogen is cooled from to and is also expanded from a volume of to a volume of <?S0=?S0>?S0not enough informationFor each system listed in first column of the table below, decide (if possible) whether the change described in the second column will increase the entropy For each system listed in first column of the tabl of the system, decrease For each system listed in first column of the tabl , or leave unchanged. If you don't have enough information to decide, check the "not enough information" button in the last column.SystemChange?SA few moles of nitrogen (N2) gas.The nitrogen is compressed from a volume of to a volume of while the temperature is held constant at <?S0=?S0>?S0not enough informationA few grams of liquid acetone ((CH3)2CO).The acetone evaporates at a constant temperature of <?S0=?S0>?S0not enough informationA few moles of nitrogen (N2) gas.The nitrogen is cooled from to and is also expanded from a volume of to a volume of <?S0=?S0>?S0not enough information
Chemistry
1 answer:
Olin [163]3 years ago
4 0
The answer could be 25
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6 0
3 years ago
Read 2 more answers
When Mendeleev started his work on organizing the elements, about how many had
Talja [164]

Answer:

About 60.

Explanation:

Mendeleev knew of 63 elements. He wrote their properties on cards and arranged them in order of atomic mass.

That's how he discovered that the properties of elements are periodic functions of their atomic masses.

8 0
3 years ago
When 100 mL of 1.0 M Na3PO4 is mixed with 100 mL of 1.0 M AgNO3, a yellow precipitate forms and [Ag ] becomes negligibly small.
lana [24]

Answer:

Na3PO4 + 3AgNO3 -------> Ag3PO4 + 3NaNO3

In which [Ag+] in negligibly small and the concentration of each reactant is 1.0 M

The answer is A)  PO43- < NO3- < Na+

Explanation:

Ag+ is removed from the solution just like PO43-, so there are just 2 possible answers at this point: a or b. Then we can notice that Na3PO4 releases 3 moles of Na+ and just 1 mole of NO3-

We have 100mL of each reactant with the same concentration for both (1.0 M) so:

(0.1)(1)(3)= 0.3 mol Na+

(0.1)(1)= 0.1 mol NO3-

so PO43- < NO3- < Na+

5 0
3 years ago
Is carbon a metal or a nonmetal? How many valence electrons does a carbon atom have?
marshall27 [118]

Answer:

Carbon is a solid non-metal element. Carbon has eight valence electrons.

Explanation:

hope this helps!

7 0
3 years ago
using the Bohr model for hydrogen: energy = hc/wavelength = 2.18 x 10^-18 Joules (1/nf2 - 1/ni2) N=15 to n=5
soldier1979 [14.2K]

Answer:

Energy lost is 7.63×10⁻²⁰J

Explanation:

Hello,

I think what the question is requesting is to calculate the energy difference when an excited electron drops from N = 15 to N = 5

E = hc/λ(1/n₂² - 1/n₁²)

n₁ = 15

n₂ = 5

hc/λ = 2.18×10⁻¹⁸J (according to the data)

E = 2.18×10⁻¹⁸ (1/n₂² - 1/n₁²)

E = 2.18×10⁻¹⁸ (1/15² - 1/5²)

E = 2.18×10⁻¹⁸ ×(-0.035)

E = -7.63×10⁻²⁰J

The energy lost is 7.63×10⁻²⁰J

Note : energy is lost / given off when the excited electron jumps from a higher energy level to a lower energy level

5 0
3 years ago
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