Two students are doing an experiment. They mix 9 sugar cubes and 2 teaspoons of baking soda, then heat it to make a long black tube of carbon. The sugar cubes have a mass of 2 grams each and
the teaspoon can hold 3 grams of baking soda. What is the total mass of the reactants in this
experiment?

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.

reserve is the answer