Rezolvati: egalati transformarile 1) metal alcalin⇒oxid⇒baza⇒sare
2)metal al (p)⇒oxid⇒+apa⇒?NaCl⇒?
3)metal amfoter⇒+O2⇒?+apa⇒?⇒sare
4)metal⇒reac oxidare (?)⇒baza⇒SARE
5)sare1+sare⇒?

Infants born with severe respiratory problems are sometimes given liquid ventilation: they breathe a liquid that can dissolve more oxygen than air can hold. one of these liquids is a fluorinated compound, cf3(cf2)7br. the solubility of oxygen in this liquid is 66 mlo2 per 100 ml liquid. in contrast, air is 21 % oxygen by volume. calculate the moles of o2 present in an infant's lungs (volume: 12 ml ) if the infant takes a full breath of air. assume a pressure of 1 atm in the lungs.

Which of the following elements is a representative element? a. chromium (cr) b. aluminum (al) c. mercury (hg) d. silver (ag)

6. what does the symbol ah stand for? o one calorie given off by a reaction the specific heat of a substance the heat capacity of a substance the heat of reaction for a chemical reaction