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Lilit [14]
3 years ago
12

How many pounds of iron will it take to construct the bridge over the hoover dam

Chemistry
1 answer:
kirill [66]3 years ago
6 0
Tho is the answer 7808565
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What is the partial pressure of argon, par, in the flask? express your answer to three significant figures and include the appro
monitta
Given which are missing in your question:
the flask is filled with 1.45 g of argon at 25 C° 
So according to this formula (Partial pressure):
PV= nRT
first, we need n, and we can get by substitution by:
n =  1.45/mass weight of argon
   = 1.45 / 39.948 = 0.0363 mol of Ar
we have R constant = 0.0821
and T in kelvin = 25 + 273 = 298
and V = 1 L
∴ P * 1 = 0.0363* 0.0821 * 298 = 0.888 atm

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An organic solvent has a density of 1.31g/ml. What volume is occupied by 50.0g of the liquid?
vesna_86 [32]

Answer:

             38.16 mL

Solution:

Data Given;

                   Density  =  1.31 g/mL

                   Mass  =  50 g  

                   Volume  =  ?

Formula Used;

                   Density  =  Mass ÷ Volume

Solving for Volume,

                   Volume  =  Mass ÷ Density  

Putting values,

                   Volume  =  50 g ÷ 1.31 g.mL⁻¹

                   Volume =  38.16 mL

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