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2 years ago

What is the polystyrene?

Chemistry

2 answers:

Marta_Voda [28]2 years ago

6 0

Answer:

Polystyrene is a versatile plastic used to make a wide variety of consumer products.

Explanation:

pentagon [3]2 years ago

3 0

Answer:

polystyrene, a hard, stiff, brilliantly transparent synthetic resin produced by the polymerization of styrene. Styrene is obtained by reacting ethylene with benzene in the presence of aluminum chloride to yield ethylbenzene.

Explanation:

in other words its a plastic

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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 :

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

5 0

2 years ago

The molecular weight of acetic acid is

kolezko [41]

Answer:

60.052 grams per mole

8 0

3 years ago

A buret was improperly read to 1 decimal place giving a reading of 27.2 mL. If the actual volume is 27.26 mL, what is the percen

Nezavi [6.7K]

Percent error can be calculated by the difference of the theoretical value and the measured value divided by the theoretical value multiplied by 100 percent.

% error = 27.26 - 27.2 / 27.26 x100
% error = 0.22%

A value close to zero would mean that the measured value is more or less near the actual value.

5 0

2 years ago

Read 2 more answers

Which of the following is NOT a property of bases? Which of the following is NOT a property of bases? Bases dissolve many metals

Hitman42 [59]

Bases dissolve many metals.

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2 years ago

Which of the following ion is the least and the most hydrated? OH- , Li+, K+, Na+

vodomira [7]

I don’t know either lol

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