The label on a bottle of Hydrogen peroxide reads 3.0% hydrogen peroxide. The bottle is 946 ml. How many ml of hydrogen peroxide does the bottle contain?

28.38 ml  ml of hydrogen peroxide is the volume that bottle contains.

Explanation:

The 3 % hydrogen peroxide means that 3 grams of H202 in the 1000 ml.

However, the total volume given is 946 ml which means that 3 % of H2O2 is present in this volume of liquid in the bottle.

so,

3% of 946 ml

x 946

= 28.38 ml

The bottle having 946 ml volume will have 28.38 ml of hydrogen peroxide in it.

It can be said that in a bottle of 946 ml, 28.38 ml is hydrogen peroxide while remaining volume is made by adding distill water to it.

Hydrogen peroxide is used as an antiseptic agent. In chemistry it is used as an oxidizing and bleaching agent.

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.  

fe 55.85 g/mol and h2o 18.02 g/mol.