What is the energy required to evaporate two moles of liquid water given the following equations? 2H2(g) + O2(g) → 2H2O(g) ∆H = -483.6 kJ

2H2(g) + O2(g) → 2H2O(l) ∆H = -571.6 kJ

a
44.0 kJ
b
88.0 kJ
c
527.6 kJ
d
1055.2 kJ

Some familiar products contain some of the same types of atoms. for instance, the chemical formula for baking soda is nahco 3. the chemical formula for liquid bleach is naclo, and the chemical formula for table salt is nacl. which choice best describes why these three products have some of the same types of atoms in common?

Anitrogen atom and an oxygen atom combine chemically to form nitric oxide. what is nitric oxide?

Jenny wants to test the electrical conductivity of two substances dissolved in water. she is preparing the containers for the experiment. which factor is most important for her to control?