Why should reactions not be performed in graduated cylinder?

Chemistry

1 answer:

Stells [14]2 years ago

3 0

Answer:

A Graduated Cylinder has a limited round and hollow shape with each stamped line demonstrating the volume of fluid being estimated. While they are commonly more exact and exact than lab flagons and recepticles, they ought not be utilized to perform volumetric examination.

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A mixture of methanol and methyl acetate contains 15.0 wt% methanol.

Usimov [2.4K]

The mixture flow rate in lbm/h = 117.65 lbm/h

<h3>Further explanation</h3>

Given

15.0 wt% methanol

The flow rate of the methyl acetate :100 lbm/h

Required

the mixture flow rate in lbm/h

Solution

mass of methanol(CH₃OH, Mw= 32 kg/kmol) in mixture :

$\tt 15\%\times 200~kg=30~kg\\\\mol=\dfrac{mass}{MW}=\dfrac{30~kg}{32~kg/kmol}=0.9375~kmol$

mass of the methyl acetate(C₃H₆O₂,MW=74 kg/kmol,85% wt) in 200 kg :

$\tt 85\%\times 200=170~kg\\\\mol=\dfrac{170}{74}=2.297~kmol$

Flow rate of the methyl acetate in the mixture is to be 100 lbm/h.

1 kg mixture = 0.85 .methyl acetate

So flow rate for mixture :

$\tt \dfrac{1~kg~mixture}{0.85~methyl~acetat}\times 100~lbm/h=117.65~lbm/h$

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2 years ago

Chemistry tests that are not stat are typically drawn in what type of tube

MArishka [77]

Lithium heparin tube i think, could be wrong but i think this is right.

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3 years ago

Nuclear energy is the heat energy produced during controlled splitting, or ________ , of radioactive isotopes

erma4kov [3.2K]

Answer is: nuclear fission.
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2 years ago

Two copper pennies has a mass of 6.64g how many moles of copper do they contain

Ann [662]

Answer:

It contains 0.105 mole cu

Explanation: