20g de cálcio adicionados a 80g de bromo produziram 100g de brometo de cálcio. Numa outra experiência, 30g de cálcio foram adicionados a X de bromo e Y de brometo de cálcio produzido nessa experiência? os valores de X e Y são? a) 40g e 120g
b) 150g e 120g
c) 120g e 150g
d) 20g e 80g

If a bottle of olive oil contains 1.4 kg of olive oil, what is the volume, in milliliters ( ml ), of the olive oil?

The drawing represents the movement of particles in a substance. what changes of state can this substance undergo

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.