What is a statement that summarize a pattern found in nature without attempting to explain

Explain how the number of valence electrons of group a elements are related to the group number

When the Sun's radiant energy falls on Earth's oceans, it causes water to change state by evaporating. Which form of energy does water vapor have?

A container contakns 5.3*10^12 particles of H2O how many moles is this

C31H64 + 4702 - 31C02+32H20 Use the balanced equation to calculate what mass of oxygen was consumed in the reaction.

A Lewis dot structure for this atom has six electrons around the symbol. Which of the following could be the atom? a. phosphorus (P) b. xenon (Xe) c. aluminum (Al) d. oxygen (O)

In a system for separating gases a tank containing a mixture of hydrogen and carbon dioxide is connected to a much larger tank where the pressure is kept very low.

What formation is favored by the addition of heat.

10+10= 123+456= 789+101112

Why are water storage tanks usually built on towers or placed on hilltops?

What does hydrochloride mean?