Which compound most likely has atoms held together by covalent bonds? A. Methane, CHA

B. Lithium fluoride, UIF

C. Sodium chloride, Naci

D. Magnesium chloride, MgCl2

What’s the theoretical yield of solid lead

Which of the following is not an assumption that scientists must make about the natural world? a. regularity b. causality c. predictability d. plausibility

Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3