What happens when molecular compounds melt?

Which contains 3 significant figures. A. 5.0x10^2 B. 500 C. 0.001 D. 1.00x10^-3 E. 0.00100 F. 395

Which of the following would be a good situation in which to apply Hess's law? A. when the reaction is exothermic B. when the products are unknown C. when a reaction is spontaneous D. when the Hreaction is not known

One isotope has 6 protons and 8 neutrons which reference names this isotope

How many neutrons are in a single atom of indium-115?

Can anyone think of some interesting facts about hydrogen? I know that there are plenty, I'm just drawing a blank right now. I'll give brainliest to whoever lists the most interesting and plentiful facts.

In the reaction A + B C, doubling the concentration of A doubles the reaction rate and doubling the concentration of B doubles the reaction rate.

How much more acidic is a solution with a PH of 5 than a solution with a PH of 8?

A sealed balloon is filled with 2.20 liters of helium gas at 20.0° C. If the pressure does not change, what is the temperature when the balloon expands to a volume of 2.60 liters? 16.9° C 23.6° C 25.1° C 73.3° C

If I have a molar concentration of Na2S2O3 of. 02M and a volume of. 001L. As well as a Molar Concentration of KI. 3M and H2O2 of. 1M. The equation of the reaction is 2S2O3+I3 - >3I+S4O6. The question is "How many moles of S2O3 are consumed".

Solid sodium reacts violently with water producing heat, hydrogen gas and sodium hydroxide. How many molecules of hydrogen gas are produced when 65.4g of sodium are added to water? 2Na (s) + 2H2O (l) - - >. 2NaOH (aq) + H2 (g)