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Dmitry_Shevchenko [17]
3 years ago
11

Pls answer

Chemistry
2 answers:
nataly862011 [7]3 years ago
3 0

Answer:

The sound wave travelled more quickly through the glass of water than the metal pole.

The sound wave travelled the fastest through the helium.

The sound wave travelled the slowest through the metal pole.

These 3 are most likely true.

<u>If you have to </u><u>pick</u><u> </u><u>just</u><u> </u><u>one</u><u>,</u> the sound wave travelled the fastest through the helium.

malfutka [58]3 years ago
3 0

Answer:

The true answer is C The sound wave traveled more quickly through the water than the balloon.

Explanation:

I G0T IT RIGHT 0N THE TEST

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The combustion of ethane ( C 2 H 6 ) (C2H6) produces carbon dioxide and steam. 2 C 2 H 6 ( g ) + 7 O 2 ( g ) ⟶ 4 CO 2 ( g ) + 6
REY [17]

Answer:

There is a production of 11.6 moles of CO₂

Explanation:

The reaction is this:

2C₂H₆(g)  +  7O₂(g)  ⟶  4CO₂(g)  +  6H₂O(g)

2 moles of ethane reacts with 7 moles of oxygen, to make 4 mol of dioxide and 6 moles of water vapor.

If the oxygen is in excess, we make the calculate with the ethane (limiting reactant)

2 moles of ethane produce 4 moles of dioxide

5.8 moles of ethane produce (5.8  .4)/2 = 11.6 moles

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A(n)____is the smallest particle of an element that has the chemical properties of that element.
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A store employee first inflated a balloon with 1.53 moles of helium gas. When the customer said it needed to have a volume of 75
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(a), the sun rising is a non-quantitative observation.

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