1. 9.5g of magnesium chloride reacts with 8.0g of sodium hydroxide to form 5.8g of magnesium hydroxide. a) calculate the mass of sodium chloride produced
b) use the masses to calculate the moles of each substance, as the simplest whole number ratio. balance the equation below:
MgCL2 + NaOH ---> Mg(OH)2 + NaCL

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)

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