In science, a vacuum is defined as space that contains absolutely no matter (no molecules, no atoms, etc.) Can energy be transferred as heat through a vacuum?

A. True

B. False

How many molecules are in 100 moles of Cu (NO3) 2?

Sodium chloride is composed of molecules that are stable when dry. in the presence of water, however, the atoms that compose the molecules separate from each other. what type of chemical bond holds the dry substance together?

How would you rewrite the following sentence to make it true? Geologists subdivide periods into eras. For Science

The equation for one of the reactions in the process of turning iron ore into the metal is Fe2O3 (s) + 3CO2 (g) → 2Fe (s) + 3CO2 (g) If you start with 3.00 kg of each reactant, what is the maximum mass of iron you can produce?

How is an electromagnet different from a bar magnet? A) Bar magnets have a north and south pole, but electromagnets do not. B) Electromagnets are strong, permanent magnets, but bar magnets are always weaker.

Based on sulubility rules, which of the followingwill occur when solutions of ZnSO4 (aq) andMgCl2 (aq) are mixed? Write the NIE if aprecipitation is considered likely. A. ZnCl2 wil precipitate; Mg2andSO42_ will be spectatior ions. B.

Can somewhere show me the dimensional analysis of this? The pressure inside of a can is 245mmHg. What is the pressure in kPa?

How does the molecular property of water affect its cohesive properties?

Which organism is able to cause an infection? A red blood cell B bacteria C white blood cell D skin cell

What is x + 4 = - x - 4?