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Alisiya [41]
3 years ago
7

Methane gas is expanded from an initial volume of 20.5 L at 0.92 atm at 23oC to a final volume of 34.6 L. During the expansion t

he gas cools to 12.0oC. What is the final pressure?
Chemistry
1 answer:
UkoKoshka [18]3 years ago
5 0
Idk what this is about im not good at this at all
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How many moles of nitrogen gas are there in 16.8 L of this gas at STP?
sweet-ann [11.9K]
According to Avogadro's Law, same volume of any gas at standard temperature and pressure will occupy same volume. And one mole of any Ideal gas occupies 22.4 dm³ (1 dm³ = 1 L).

Data Given:

                  n = moles = ?
                  V = Volume = 16.8 L

Solution:
               
As 22.4 L volume is occupied by one mole of gas then the 16.8 L of this gas will contain....

                           = ( 1 mole × 16.8 L) ÷ 22.4 L
                    
                           = 0.75 moles

Result:
           
16.8 L of Nitrogen gas will contain 0.75 moles at standard temperature and pressure.
4 0
3 years ago
Part A: You are given a beaker containing a solution of an enzyme that hydrolyzes adenosine triphosphate (ATP) while it generate
Oksi-84 [34.3K]

Answer:

1) magnesium chloride

2) b) The copper is getting oxidized from Cu+ to Cu2+ and turns blue.

Explanation:

The work published by David N. Frick, Sukalyani Banik, and Ryan S. Rypma in J Mol Biol. 2007 Jan 26; 365(4): 1017–1032 clearly shows that divalent metal ions of group 2 such as Mg^2+ play an important role in ATP hydrolysis. Addition of EDTA decreased the rate of hydrolysis of ATP (due to sequestration of the divalent ion of group 2) indicating an active participation of divalent ions in the process.

2) The copper I ion is colourless because it is a d^10 specie. However, when it is oxidized to Cu^2+, a blue colour appears in the solution.

4 0
3 years ago
Which list of elements is arranged in order of increasing electronegativity?
muminat
K, ca, sc is the right answer. Take a look at table S of your chemistry reference table. 
6 0
3 years ago
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Fr33 points ;p have a good day everyone
Doss [256]

Answer:

thx

Explanation:

have a blessed day can i have brainlyest?

5 0
3 years ago
Which of the following statements is true?
pashok25 [27]
The answer is longitudinal waves more particles at right angles
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