Which of the following is the final fate of a very massive star?

Large planet

Comets

Red giants

Black holes

7. A solution has a hydrogen ion concentration of 3.4 * 104 M. a. What is the pH of this solution? b. What is the value for [-OH] for this solution?

In the chemical laboratory why do scientists use a mortar and pestle

Which statement describes a chemical reaction? a. Atoms in the products are rearranged to form new substances. b. Atoms in the reactants are rearranged to form new substances. c. Atoms in the products change into new atoms to form new substances. d.

How many moles of HCL would be required to produce a total of 2 moles of H2? A) 0.5 B) 2 C) 3 D) 15

1. Calculate the heat change associated with cooling a 350.0 g aluminum bar from 70.0 degrees C to 25.0 degrees C. The specific heat capacity of aluminum is 0.9.

In which pair of elements are the chemical properties of the elements most similar?

In a play, the rising action consists of the events that lead up to the a. last line in the scene. c. external conflict. b. climax. d. internal conflict.

Solution of Na2SO4 is A) acidic B) basic C neutral

What are the elements with atomic numbers from 58 to 71 in the periodic table called?

Which of these elements elements has an electron configuration of [Kr]5s2