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Hatshy [7]
2 years ago
9

When heating a flammable or volatile solvent for a recrystallization, which of these statements are correct? More than one answe

r may be correct.
a. You should not use an open flame to heat the solvent.
b. You should heat the solvent in a stoppered flask to keep vapor away from any open flames.
c. You should ensure that no one else is using an open flame near your experiment.
Chemistry
2 answers:
Citrus2011 [14]2 years ago
6 0

Answer:

You should not use an open flame to heat the solvent and the solvent should be heat in a stoppered flask to vapour away from the open flame

Explanation:

ruslelena [56]2 years ago
4 0

Answer:

A

Explanation:

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What volume measured in stp will 3.75 grams of helium gas occupy?
Andre45 [30]
Molar mass  helium gas :

He = 4.0 g/mol

number of moles:  3.75 / 4.0 => 0.9375 moles

1 mole ------ 22.4 ( at STP)
0.9375 ------ ?

volume = 0.9375 x 22.4 / 1

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Volume = 21 L

hope this helps!

6 0
3 years ago
QUESTION 1
Lisa [10]
B obviously not a or c so if it aint b its D
3 0
3 years ago
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EastWind [94]
These could all go either way, hardness and other special properties are what I'm guessing would be the most accurate in determining the kind of material.
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4 0
2 years ago
How many moles of sulfur dioxide (SO2) are required to produce 5.0 moles of sulfur (S) according to the following balanced equat
scoundrel [369]

Answer:

1.67 moles

Explanation:

From the balanced equation of reaction:

                     SO_2 + 2H_2S -> 3S + 2H_2O

1 mole of sulfur dioxide, SO2, is required to produce 3 moles of sulfur, S.

<em>If 1 mole SO2 = 3 moles S, then, how many moles of SO2 would be required for 5 moles S?</em>

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Hence, <u>1.67 moles of SO2 would be required to produce 5.0 moles of S.</u>

3 0
2 years ago
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PLEASE HELP I will mark brilleint
zhuklara [117]
1. b
2.a
3.c
I think . hope I get it right
6 0
3 years ago
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