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ASHA 777 [7]
2 years ago
11

4. The equation for the decomposition of hydrogen peroxide is shown. 2H₂O₂(aq) → 2H₂O(l) + O₂(g) 48.0 25.0 cm³ of aqueous hydrog

en peroxide forms 48.0 cm³ of oxygen at room temperature and pressure (r.t.p.). Calculate the concentration i aqueous hydrogen peroxide at the start of the experiment using the following steps ● Calculate the number of moles of oxygen formed. • Deduce the number of moles of hydrogen peroxide that decomposed. • Calculate the concentration of hydrogen peroxide in mol/dm³.​
Chemistry
1 answer:
Maksim231197 [3]2 years ago
8 0

Answer:

Just add what they equal to hope this helps :)

Explanation:

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Snezhnost [94]
<h2>Answer:</h2>

<u>The correct answer is Thermal Energy</u>

<h2>Explanation:</h2>

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4 0
3 years ago
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293Ts- has how many protons, neutrons, and electrons
r-ruslan [8.4K]

Answer:

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Explanation:

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3 years ago
Tin has ten stable isotopes. The heaviest, 124Sn, makes up 5.80% of naturally occuring tin atoms. How many atoms of 124Sn are pr
matrenka [14]

The average atomic mass of Sn is 118.71 g/mol

the percentage of heaviest Sn is 5.80%

the given mass of Sn is 82g

The total  moles of Sn will be = mass / atomic mass = 82/118.71=0.691

Total atoms of Sn in 82g = 6.023X10^{23}X0.691=4.16X10^{23}

the percentage of heaviest Sn is 5.80%

So the total atoms of Sn^{124} = 5.80% X 4.16X10^{23}

Total atoms of Sn^{124}=2.41X10^{22} atoms

the mass of Sn^{124} will be = \frac{2.41X10^{22}X124}{6.023X10^{23}}=4.96g

5 0
3 years ago
1. What is the wave speed of a wave that has a frequency of 100 Hz and a wavelength of 0.30 m?
Sav [38]
Wave speed = frequency x wavelength 
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Hope this helps!
5 0
3 years ago
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