How many protons are in a electrons?

Given: 2H2O2 → 2H2O + O2 structure of H2O2: H-O-O-H Bond Bond Energy (kJ/mol) O-H 459 O=O 494 O-O 142 Based on the given bond energies, what is the enthalpy change for the chemical reaction? A. - 352 kJ B. - 210 kJ C. - 176 kJ D. - 105 kJ

The reaction of sodium peroxide and water produces sodium hydroxide and oxygen gas. The following balanced chemical equation represents the reaction. 2 Na^2O^2 (s) + 2 H2O (l) → 4 NaOH (s) + O^2 (g) If 15.

Why is mercury a good material to use in a thermostat?

Compare and Contrast the inner and outer planets

An unsaturated alkene or alkene is a result from a loss of hydrogen atoms true or false

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda