Look at the diagram below.

which best describes what is taking place in the diagram?
a. the calibration of an acid is being completed with a base.
b. a direct measurement of ph is taking place.
c. an indirect measurement of ph is taking place.
d. the final volume of an acid or base is being measured.

The first element on the periodic table of elements is carbon. a. true b. false

What is the correct equation for cellular respiration?

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy