The label shown above contains information about some harmful effects of acetone.A group of students plans to use acetone to rin
se out a glass container. A second group of students is working at the same lab table. Which of the following lab procedures should the second group of students avoid?
1 answer:
Answer:
<u>Heating water with an open flame</u>
<u>Explanation:</u>
Remember, we are told in the label that Acetone is a "flammable liquid and vapor." <em>Being flammable means the substance can easily be set on fire</em>, and we would expect an open flame from heating water to trigger an explosion (a disaster) in which the Acetone is set on fire causing life-threatening dangers to the second group of students.
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Answer:
6.67 moles
Explanation:
Given that:-
Moles of hydrogen gas produced = 10.0 moles
According the reaction shown below:-
3 moles of hydrogen gas are produced when 2 moles of aluminium undergoes reaction.
Also,
1 mole of hydrogen gas are produced when moles of aluminium undergoes reaction.
So,
10.0 moles of hydrogen gas are produced when moles of aluminium undergoes reaction.
<u>Moles of Al needed = moles = 6.67 moles</u>