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Julli [10]
3 years ago
6

The mass percent of hydrogen in hydrogen peroxide, h2o2, is

Chemistry
2 answers:
Artemon [7]3 years ago
5 0

<u>Answer:</u> The mass percent of hydrogen in hydrogen peroxide is 5.88 %.

<u>Explanation:</u>

In H_2O_2, there are 2 hydrogen atoms and 2 oxygen atoms.

To calculate the mass percent of element in a given compound, we use the formula:

\text{Mass percent of hydrogen}=\frac{\text{Mass of hydrogen}}{\text{Molar mass of hydrogen peroxide}}\times 100

Mass of hydrogen = (1\times 2)=2g

Mass of hydrogen peroxide = 34 g

Putting values in above equation, we get:

\text{Mass percent of hydrogen}=\frac{2}{34}\times 100=5.88\%

Hence, the mass percent of hydrogen in hydrogen peroxide is 5.88 %.

miss Akunina [59]3 years ago
3 0
The atomic weight of H is 1, O is 16.
There are two of each in a hydrogen peroxide molecule.
(1*2)+(16*2)=2+32
2+32=34
The weight of the whole molecule is 34, and hydrogen makes up 2 of that.
(2/34)*100=0.0588235294*100
0.0588235294*100=5.88235294

The percentage mass of hydrogen in a hydrogen peroxide molecule is 5.88%
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Answer:

Explanation:

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T [E]t = 2.23 n mol. L^-1

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Putting values in above equation,

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Turn over number is maximum no of substrate molecule that can be converted into product molecules for unit time by enzyme molecule.

5 0
3 years ago
Which of the following is the correct formula for barium (II) sulfate?
nasty-shy [4]
BaSO4 is the correct formula for barium (ll) sulfate
5 0
3 years ago
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A 10-gram aluminum cube absorbs 677 joules when its temperature is increased from 50°C to 125°C. What is the specific heat of al
ra1l [238]
<h3>Answer:</h3>

0.90J/g°C

<h3>Explanation:</h3>

We are given:

Mass of Aluminium = 10 g

Quantity of heat = 677 Joules

Change in temperature = 125°C - 50°C

                                      = 75°C

We are required to calculate the specific heat capacity of Aluminium

But, Quantity of heat = Mass × specific heat × Change in temperature

Q = mcΔt

Rearranging the formula;

c = Q ÷ mΔt

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Thus, the specific heat capacity of Aluminium is 0.90J/g°C

8 0
3 years ago
Bromine, a liquid at room temperature has a boiling point of 58 degrees celsius and a melting point at -7.2 degree celsius bromi
ra1l [238]

Hello!


Bromine can be classified as a pure substance.


Why?


Bromine is an element with atomic number 35 on group 17 of the Periodic Table. That's the first sign that shows us that it is a pure substance.


But the fact that it has a clear and defined boiling and melting point is a sign that we are in the presence of a pure substance. Pure substances are characterized by defined boiling and melting points.


Mixtures usually have a range of temperatures in which they melt and boil.


Have a nice day!

8 0
3 years ago
What is the total number of moles of H2SO4 needed to prepare 5.0 liters of a 2.0 M solution of H2SO4
forsale [732]
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3 0
3 years ago
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