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givi [52]
3 years ago
5

If a drum skin vibrates with a frequency of 100 Hz, how many times does it move up and down each second?

Chemistry
1 answer:
bogdanovich [222]3 years ago
4 0
100 HZ the drum will move up and down 30 each second
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The third reason helped Rutherford to discover the nucleus.
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How many reactant molecules and product gas molecules are in this equation?
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Answer:

N₂  = 6.022 × 10²³ molecules

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Explanation:

Chemical equation;

N₂ + 3H₂     →  2NH₃

It can be seen that there are one mole of nitrogen three mole of hydrogen and two moles of ammonia are present in this equation. The number of molecules of reactant and product would be calculated by using Avogadro number.

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

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Number of molecules of hydrogen:

3 mol × 6.022 × 10²³ molecules/ 1 mol

18.066 × 10²³ molecules

Number of molecules of ammonia:

2 mol × 6.022 × 10²³ molecules/ 1 mol

12.044 × 10²³ molecules

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Which statement best reflects a change in weather ?
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Chemistry balance equations C2H +O2=CO2+H2O​
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Invalid equation.

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A sample of sodium hydroxide (NaOH) has a mass of 160.0 g. The molar mass of NaOH is 40.00 g/mol. How many moles of NaOH does th
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Answer:

400 becuase NAOH AND TJE NAOH ARE THE same

Explanation:

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