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Chemistry

1 answer:

Troyanec [42]3 years ago

7 0

Answer:

According to the chart, the period and string length are not the same. Regardless of string length. The chart says that "period = seconds 10"

Explanation:

So for example in Trial 1. The period equaled 8.7, so in turn you would times 8.7 by 10 and get 87. Which is not equal to the string length. For they are also measured in two different measurements.

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What does the atomic number of each atom represent?

saw5 [17]

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Equal volumes of H2 and O2 are placed in a balloon and then ignited. Assuming that the reaction goes to completion, which gas wi

Sonbull [250]

Answer: Oxygen

Explanation:

$2H_2+O_2\rightarrow 2H_2O$

As seen from the balanced equation:

2 moles of hydrogen combine with 1 mole of oxygen or 1 mole of hydrogen combine with 1/2 mole of oxygen.

According to Avogadro's law, equal volumes of gases contain equal number of molecules and hence equal number of moles.

Thus if x moles of both gases are present, x moles of hydrogen will combine with $\frac{x}{2}$ moles of oxygen and $x-\frac{x}{2}=\frac{x}{2}$ moles of oxygen will be left used and will be in excess.