3 years ago

Which natural gas liquid is used to make the base chemical, ethylene?

Chemistry

1 answer:

netineya [11]3 years ago

6 0

It would be ethylene

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PLEASE HELP WITH MY CHEM ASSIGNMENT!!!

aalyn [17]

Answer: 209.2

Explanation:

4. q = mcat

q = 5g(4.184)(40-50)

q = -209.2

the negative sign indicates that heat is given off

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3 years ago

Why do you need to remove carbon dioxide and water vapour to produce liquid air

AleksandrR [38]

Answer:

because these substances solidify when cooled and would clog the pipes of the air liquefaction plant.

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3 years ago

A 1.000 g sample of an unknown hydrate of cobalt chloride is gently dehydrated. The resulting mass is 0.546 g. The cobalt is iso

ira [324]

Answer:

Explanation:

From the 1 g sample you have:

0.546 grams of cobalt chloride

1-0.546=0.454 grams of water

Now:

1) The salt

Of the 0.546 g, 0.248 g are cobalt (Mr=58.9) and the rest id Cl (Mr=35.45):

$n_{Co}=\frac{0.248 g}{58.9 g/mol}=4.21*10^{-3}mol$

$n_{Cl}=\frac{0.298 g}{35.45g/mol}=8.4*10^{-3}mol$

Dividing:

$\frac{n_{Cl}}{n_{Co}}=\frac{8.4*10^{-3}mol}{4.21*10^{-3}mol}=2$

So the molecular formula will be:

$CoCl_2$

2) The water

The water's molecular weight is M=18 :

$n_{w}=\frac{0.454g}{18g/mol}=0.025 mol$

Bonding with the Co:

$\frac{n_{w}}{n_{Co}}=\frac{0.025mol}{4.21*10^{-3}mol}=6$

The complete formula of the hydrate:

$CoCl_2*6 H_2O$

8 0

4 years ago

What element has 2 occupied principals of energy levels

DerKrebs [107]

Helium i believe is the answer

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3 years ago

Scientific predictions based on laws are formulated using:

abruzzese [7]

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A. deductive reasoning

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4 years ago

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