Answer:
The non metals form anions…
Explaination: Generally non-metals have 4 to 7 electrons in their outermost or valence shell.(Exception Carbon, silicon, etc. they have 4 electrons). Hence to achieve their octet (to have 8 electrons in their valence shell) they accept 1,2 or 3 electrons from other elements accordingly, thereby having -1, -2 or -3 charge on them (turning from neutral atoms to charged anions).
Extra info: non metals react with metals by forming anions and form ionic molecule generally but when non metals react with other non metals they form covalent molecule due to ‘sharing’ of electrons.
Hope it helps
<h3><u>Answer;</u></h3>
0.180 moles of HgO
<h3><u>Explanation;</u></h3>
The atomic weight of mercury is 200.5
The atomic weight of oxygen is 16.0
Therefore; the molecular weight (per mole) of mercury oxide is 216.5 g
Hence;
Number of moles = 39 g/(216.5 g/mole)
= 0.180 moles of HgO.
not 100% sure about significant figures. density might be rounded weirdly, not sure. Idk how to find hardness, so I just found the mineral before hardness, and used the hardness of that mineral
It means that 22.5×10^5 J of heat is required to change 1 kg of water into steam.
Latent heat of vaporization is amount of energy required to change 1 gram (in this example 1 kilogram) of material from the liquid to the gaseous state at its boiling point.
Boiling point of the water is 100°C.
Joule (J) is the standard unit for energy (in this example heat).
Evaporization is phase change process in which the water changes from a liquid to a gas (water vapor). Fore example, solar radiation can be the source of energy for evaporation.
More about heat of vaporization: brainly.com/question/14679329
#SPJ4