What is the luminosity of a star? A.
the measure of absolute magnitude
B.
the measure of its distance from the Earth
C.
the measure of radius of a star
D.
the measure of total energy output
E.
the measure of its surface temperature

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? (2 points) decreasing temperature decreasing pressure decreasing surface area decreasing solute concentration

Which statement accurately represents the arrangement of electrons in bohr’s atomic model?