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SOVA2 [1]
3 years ago
10

Which veriable should he change, measure and control (temp of water, volume of water and mass of sodium chloride that dissolve )

in a dissolving investigation

Chemistry
1 answer:
erma4kov [3.2K]3 years ago
7 0
I would say
change: Temp
Measure: Mass
Control: Volume
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If 0.500 mol of NaN3 react what mass I'm grams of nitrogen would result
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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 = ?
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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
                    
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Result:
           
16.8 L of Nitrogen gas will contain 0.75 moles at standard temperature and pressure.
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What everyday things turn green because acid
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Explanation
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