3 years ago

Identify ways to reduce the risk of liquid bumping while heating.

1 answer:

7 0

The most common way of preventing bumping is by adding one or two boiling chips to the reaction vessel. However, these alone may not prevent bumping and for this reason it is advisable to boil liquids in a boiling tube, a boiling flask, or an Erlenmeyer flask.

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Select the correct answer. Which quantity is a graduated cylinder designed for measuring? A. length B. mass C. temperature D. ti

gtnhenbr [62]

The correct answer is E.

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4 years ago

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Balance the following equation<br><br> CH₄ + O₂ → CO₂ + H₂O

nalin [4]

Answer:

CH4 + 2 O2 - - - > CO2 + 2 H2O

Explanation:

hope this helps,

you can check by adding all the numbers on both sides

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3 years ago

During a class demonstration the potassium exploded. Suggest what might have caused this to happen

tatiyna

Could’ve reacted with water as alkali metals are very reactive to water.

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3 years ago

13.3 g of benzene (C6H6) is dissolved in 282 g of carbon tetrachloride. What is the molal concentration of benzene in this solut

Verizon [17]

Answer:

0.605 molal

Explanation:

molality is the amount of solute in a particular mass of solvent.

lets calculate the amount of benzene solute.

mass of benzene= 13.3g

molar mass of C6H6= 12*6 +1*6 =72+7=78g/mol

amount of benzene= mass/molar mass

=13.3/78

=0.1705mol

molality= amount of solute/mass of solvent in kg

mass of solvent=282g=0.282kg

molality = 0.1705/0.282

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3 years ago

Which statement is true for gases, but not for solids or liquids? A. The particles are in motion. B. The particles rarely touch

andriy [413]

Answer:

B. The particles rarely touch each other.

Explanation:

The particles of gases are far apart, so they rarely touch each other. The particles of liquids can slide past each other, and the particles of solids are locked in place next to each other.

In all three states of matter, the particles

Have a definite volume
Are in constant motion
Have kinetic energy

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3 years ago