Water can be separated into its elements. If 20.0 g water is decomposed by this method, how many liters of oxygen gas will be produced assuming STP? 2H2O --> 2H2 + O2
6.23 L oxygen gas
12.4 L oxygen gas
11.2 L oxygen gas
7.00 L oxygen gas
24.9 L oxygen gas

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.  

the answer is true. hope it .

answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.