Which of the following is a salt?

A) C2H2

B) C6H12O6

C) O2

D) CaCl2

Microscopic shells that are buried under the seabed are converted to organic sedimentary rocks. during this process, which property of the shells will remain constant? a. mass of the shells b. color of the shells c. texture of the shells d.

The process by which ice widens and deepends cracks in rock is called

In which of the following is the number of neutrons correctly represented? A. fluorine: atomic number 9, mass 19, neutrons 0 B. arsenic: atomic number 33, mass 75, neutrons 108 C. magnesium: atomic number 12, mass 24, neutrons 24 D.

Why were scientists surprised to find coal in the arctic?

Which of the following is not a use of nuclear chemistry in industry? Thickness gauges Tracers Leak detectors Stimulate plant growth

Lithium and nitrogen react in a combination reaction to produce lithium nitride: 6Li (s) + N2 (g) → 2Li3N (s) How many moles of lithium are needed to produce 0.60 mol of Li3N when the reaction is carried out in the presence of excess nitrogen?

7. Convert 5.2 cm of magnesium (Mg) ribbon to mm of Mg ribbon.

If you place a crystal substance on a tabletop, return to view it after some time passes, and find it as a powdered substance, which of the following processes most likely took effect? A. Efflorescence B. Distillation

What changes occur in the nuclei of atoms involved in the reactions that fuel nuclear power plants?

Calculate the molar mass for HCN. 0.2703 g/mol 2.703 g/mol 27.03 g/mol 270.3 g/mol